Earthquakes | Family Survival Protocol

Category: Earthquakes

South Pacific Ocean – Macquarie Island region 2 EQ’s 5.7 and 5.0 June 17th , 2013

Filed under: Earth Watch Report, Earthquakes, Global Disaster Watch — 1 Comment

June 17, 2013

Earth Watch Report - Earthquakes

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M5.7 – Macquarie Island region

2013-06-16 13:31:35 UTC

Event Time

2013-06-16 13:31:35 UTC
2013-06-17 00:31:35 UTC+11:00 at epicenter
2013-06-16 08:31:35 UTC-05:00 system time

Location

58.364°S 158.193°E depth=10.0km (6.2mi)

Nearby Cities

434km (270mi) S of Macquarie Island, Australia
1496km (930mi) SSW of Invercargill, New Zealand
1545km (960mi) SSW of Gore, New Zealand
1619km (1006mi) SSW of Dunedin, New Zealand
1880km (1168mi) SSE of Hobart, Australia

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Contributed by USGS National Earthquake Information Center

Instrumental Intensity

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M5.0 – Macquarie Island region

2013-06-16 14:20:03 UTC

Event Time

2013-06-16 14:20:03 UTC
2013-06-17 01:20:03 UTC+11:00 at epicenter
2013-06-16 09:20:03 UTC-05:00 system time

Location

58.256°S 158.315°E depth=15.2km (9.4mi)

Nearby Cities

421km (262mi) S of Macquarie Island, Australia
1482km (921mi) SSW of Invercargill, New Zealand
1531km (951mi) SSW of Gore, New Zealand
1605km (997mi) SSW of Dunedin, New Zealand
1873km (1164mi) SSE of Hobart, Australia

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Seismicity in Australia

INTRODUCTION

Earthquakes can occur in almost every part of Australia, although certain regions have a higher likelihood of experiencing an earthquake than others. Possibly the most earthquake prone regions of Australia are the West Australian wheatbelt, and the Flinders Ranges of South Australia. The alpine region of eastern Australia is also relatively active. Three Australian earthquakes are known to have caused fatalities. The 1902 earthquake near Warooka, on the Yorke Peninsula of South Australia (mag 6.0), caused two deaths, attributed to heart attacks. The 1935 Gayndah earthquake in Queensland caused one death. By far the most significant was the 1989 earthquake at Newcastle, NSW (mag 5.6), which caused 13 fatalities, mostly because of the catastrophic structural collapse of the Newcastle Worker’s Club.

The body responsible for producing risk maps of Australia is the Australian Earthquake Engineering Society.

West Australian seismicity is treated separately on this site. Seismicity for the rest of Australia is summarised below.

BELOW – Map of earthquakes superimposed on Digital Terrain Model – courtesy Dan Clark, Geoscience Australia

-Below – Earthquake Hazard map of Australia, 1991 (Australian Geological Survey Organisation, Canberra: McCue et al., 1993). A new version of this map was published by Geoscience Australia in 2012.

This map shows that the coastal regions of NW Australia are the most earthquake prone, and the region of east Australia to the west of the dividing range is the least.

TABLE OF IMPORTANT AUSTRALIAN EARTHQUAKES

DATE	LOCATION	MAG	Rank*	cost*	COMMENTS
26 Jan 1892	Bass St., Tas.	6.9			largest of a series of earthquakes
10 May1897	Beachport, SA	6.5	7	12m	massive damage around Kingston, SA
19 Sep1902	Warooka, Yorke Peninsula, SA	6.0	5	12m	two known deaths
19 Nov 1906	off west coast of WA	7.5			111.8E , 19.1S -largest Australian earthquake?
6 June 1918	Gladstone, Qsld	6.0			one of largest E aust earthquakes, felt from Mackay to Grafton
29 Apr 1941	Meeberrie, WA	7.3			the biggest onshore Australian event
27 June 1941	Simpson Desert, NT	6.5			largest of a series of earthquakes
3 Jan 1954	Adelaide, SA	5.4	2	152m	$8.8 million in damage (in 1954 $)
22 May 1961	Robertson/Bowral	5.6			$500,00 (in 1961 $)
14 Oct 1968	Meckering, WA	6.8	4	57m	35 km surface rupture
2 June 1979	Cadoux, WA	6.2	6	16m	surface rupture
30 March 1986	Marryat Ck, SA	5.8			14 km surface rupture, 0.6 m vertical offset
22 Jan 1988	Tennant Ck., NT	6.7			3 events over mag 6 on this day
28 Dec 1989	Newcastle, NSW	5.6	1	5.3Bn	13 killed, $1.5 Billion damage
8 Aug 1994	Ellalong NSW	5.4	3	71m	near Newcastle – $40 m damage
20 Apr 2010	Kalgoorlie	5.0	8		3 people injured

*The ranking and dollar cost (2010 equivalent) of damage shown here is according to a table presented by James Daniell at the AEES conference in Perth, Nov 2010. The source is the CATDAT data base

Although the Newcastle NSW earthquake of December 1989 was one of our most significant in terms of loss of life and damage, for sheer energy release, the activity which began in Tennant Creek, NT in January 1988, is probably more significant. Three magnitude 6 events occurred there within 24 hours, and complex surface rupturing occurred. Many thousands of aftershocks have occurred there since those events, and aftershocks are still occurring there.

Since the Tennant Creek earthquakes, the largest Australian event has been the Mag 6.3 event off Cockatoo Is., northern WA, in August 1997.

Between 2000 and 2002, a large swarm of earthquakes occurred near Burakin, WA. Burakin is approximately 200 km NE of Perth. Three earthquakes of magnitude 5.0 or more occurred in this earthquake swarm.

Since the 1997 Cockatoo Is. event, the largest Australian earthquake has been the magnitude 5.4 earthquake at Mt. Redvers, N.T., near the West Australian border. It occurred on Feb 11 2004.

The maps below were produced from extracts of the on-line data base of Geoscience Australia (www.ga.gov.au)

Greece – Greece – 4 EQ’s from 5.8 to 4.0 Mag June 16th 2013 – A Total of 15 EQ’s in the last 2 days.

Filed under: Earth Watch Report, Earthquakes, Global Disaster Watch — 1 Comment

June 17, 2013

Earth Watch Report - Earthquakes

Today’s Map

Greece - 7 EQ’s ranging from 6.2 to 4.5 Magnitude – 61km S of Pirgos June 15th , 2013

Greece – 15 EQs in the last 2 days June 17th 2013

4.1 84km S of Pirgos, Greece 2013-06-17 02:34:42 UTC-05:00 10.0 km
4.1 74km SSW of Pirgos, Greece 2013-06-16 21:55:02 UTC-05:00 10.1 km
4.0 64km S of Pirgos, Greece 2013-06-16 18:43:40 UTC-05:00 57.8 km
5.8 56km S of Pirgos, Greece 2013-06-16 16:39:09 UTC-05:00 37.9 km
4.3 83km S of Pirgos, Greece 2013-06-16 03:15:14 UTC-05:00 10.2 km
4.2 68km S of Pirgos, Greece 2013-06-15 23:32:48 UTC-05:00 10.0 km
4.5 76km S of Pirgos, Greece 2013-06-15 19:53:34 UTC-05:00 10.0 km
4.3 76km S of Pirgos, Greece 2013-06-15 14:04:04 UTC-05:00 10.0 km
4.5 76km S of Pirgos, Greece 2013-06-15 13:24:50 UTC-05:00 10.6 km
4.9 73km SSW of Pirgos, Greece 2013-06-15 12:22:02 UTC-05:00 3.2 km
4.9 67km SSW of Pirgos, Greece 2013-06-15 12:02:05 UTC-05:00 30.2 km
4.8 87km S of Pirgos, Greece 2013-06-15 11:59:34 UTC-05:00 28.4 km
4.6 73km S of Pirgos, Greece 2013-06-15 11:51:14 UTC-05:00 24.5 km
4.9 73km S of Pirgos, Greece 2013-06-15 11:28:56 UTC-05:00 21.6 km
6.2 61km S of Pirgos, Greece 2013-06-15 11:11:00 UTC-05:00 10.0 km

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M5.8 – 56km S of Pirgos, Greece

2013-06-16 21:39:09 UTC

Event Time

2013-06-16 21:39:09 UTC
2013-06-16 23:39:09 UTC+02:00 at epicenter
2013-06-16 16:39:09 UTC-05:00 system time

Location

34.491°N 25.087°E depth=37.9km (23.5mi)

Nearby Cities

56km (35mi) S of Pirgos, Greece
82km (51mi) SW of Ierapetra, Greece
92km (57mi) S of Irakleion, Greece
93km (58mi) S of Nea Alikarnassos, Greece
406km (252mi) SSE of Athens, Greece

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Contributed by USGS National Earthquake Information Center

Instrumental Intensity

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M4.0 – 64km S of Pirgos, Greece

2013-06-16 23:43:40 UTC

Event Time

2013-06-16 23:43:40 UTC
2013-06-17 01:43:40 UTC+02:00 at epicenter
2013-06-16 18:43:40 UTC-05:00 system time

Location

34.424°N 25.073°E depth=57.8km (35.9mi)

Nearby Cities

64km (40mi) S of Pirgos, Greece
88km (55mi) SW of Ierapetra, Greece
100km (62mi) S of Irakleion, Greece
101km (63mi) S of Nea Alikarnassos, Greece
412km (256mi) SSE of Athens, Greece

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M4.1 – 74km SSW of Pirgos, Greece

2013-06-17 02:55:02 UTC

Event Time

2013-06-17 02:55:02 UTC
2013-06-17 04:55:02 UTC+02:00 at epicenter
2013-06-16 21:55:02 UTC-05:00 system time

Location

34.354°N 24.946°E depth=10.1km (6.2mi)

Nearby Cities

74km (46mi) SSW of Pirgos, Greece
102km (63mi) SW of Ierapetra, Greece
109km (68mi) S of Irakleion, Greece
110km (68mi) S of Nea Alikarnassos, Greece
417km (259mi) SSE of Athens, Greece

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M4.1 – 84km S of Pirgos, Greece

2013-06-17 07:34:42 UTC

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Tectonic Summary

Seismotectonics of the Mediterranean Region and Vicinity

The Mediterranean region is seismically active due to the northward convergence (4-10 mm/yr) of the African plate with respect to the Eurasian plate along a complex plate boundary. This convergence began approximately 50 Ma and was associated with the closure of the Tethys Sea. The modern day remnant of the Tethys Sea is the Mediterranean Sea. The highest rates of seismicity in the Mediterranean region are found along the Hellenic subduction zone of southern Greece, along the North Anatolian Fault Zone of western Turkey and the Calabrian subduction zone of southern Italy. Local high rates of convergence at the Hellenic subduction zone (35mm/yr) are associated with back-arc spreading throughout Greece and western Turkey above the subducting Mediterranean oceanic crust. Crustal normal faulting throughout this region is a manifestation of extensional tectonics associated with the back-arc spreading. The region of the Marmara Sea is a transition zone between this extensional regime, to the west, and the strike-slip regime of the North Anatolian Fault Zone, to the east. The North Anatolian Fault accommodates much of the right-lateral horizontal motion (23-24 mm/yr) between the Anatolian micro-plate and Eurasian plate as the Anatolian micro-plate is being pushed westward to further accommodate closure of the Mediterranean basin caused by the collision of the African and Arabian plates in southeastern Turkey. Subduction of the Mediterranean Sea floor beneath the Tyrrhenian Sea at the Calabrian subduction zone causes a significant zone of seismicity around Sicily and southern Italy. Active volcanoes are located above intermediate depth earthquakes in the Cyclades of the Aegean Sea and in southern Italy.

In the Mediterranean region there is a written record, several centuries long, documenting pre-instrumental seismicity (pre-20th century). Earthquakes have historically caused widespread damage across central and southern Greece, Cyprus, Sicily, Crete, the Nile Delta, Northern Libya, the Atlas Mountains of North Africa and the Iberian Peninsula. The 1903 M8.2 Kythera earthquake and the 1926 M7.8 Rhodes earthquakes are the largest instrumentally recorded Mediterranean earthquakes, both of which are associated with subduction zone tectonics. Between 1939 and 1999 a series of devastating M7+ strike-slip earthquakes propagated westward along the North Anatolian Fault Zone, beginning with the 1939 M7.8 Erzincan earthquake on the eastern end of the North Anatolian Fault system. The 1999 M7.6 Izmit earthquake, located on the westward end of the fault, struck one of Turkey’s most densely populated and industrialized urban areas killing, more than 17,000 people. Although seismicity rates are comparatively low along the northern margin of the African continent, large destructive earthquakes have been recorded and reported from Morocco in the western Mediterranean, to the Dead Sea in the eastern Mediterranean. The 1980 M7.3 El Asnam earthquake was one of Africa’s largest and most destructive earthquakes within the 20th century.

Large earthquakes throughout the Mediterranean region have also been known to produce significant and damaging tsunamis. One of the more prominent historical earthquakes within the region is the Lisbon earthquake of November 1, 1755, whose magnitude has been estimated from non-instrumental data to be about 8.0. The 1755 Lisbon earthquake is thought to have occurred within or near the Azores-Gibraltar transform fault, which defines the boundary between the African and Eurasian plates off the west coast of Morocco and Portugal. The earthquake is notable for both a large death toll of approximately 60,000 people and for generating a tsunami that swept up the Portuguese coast inundating coastal villages and Lisbon. An earthquake of approximately M8.0 near Sicily in 1693 generated a large tsunami wave that destroyed numerous towns along Sicily’s east coast. The M7.2 December 28, 1908 Messina earthquake is the deadliest documented European earthquake. The combination of severe ground shaking and a local tsunami caused an estimated 60,000 to 120,000 fatalities.

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Greece – 7 EQ’s ranging from 6.2 to 4.5 Magnitude – 61km S of Pirgos June 15th , 2013 (familysurvivalprotocol.com)
USGS: Earthquake Magnitude 6.2 – S of Pirgos, Greece (sott.net)
M6.2 – 61km S of Pirgos, Greece (earthquake.usgs.gov)
Greece earthquake today (disaster-report.com)
Four Earthquakes in Three Days is only the Beginning of the End. (wfoster2011.wordpress.com)
6.2M: Earthquake Strikes Southern Coast of Greece (brandontward.blogspot.com)
Moderate earthquake in Athens, Greece today (disaster-report.com)
Strong 6.2 magnitude earthquake shakes southern Greece (theextinctionprotocol.wordpress.com)
Moderate 6.2 quake strikes south of Crete (channelnewsasia.com)
Strong earthquake (aftershock) south of Crete, Greece – June 16, 2013 (earthquake-report.com)

Tags: Athens, Greece, Ierapetra, Nea Alikarnassos, Pirgos, Pyrgos Elis

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South of the Kermadec Islands 6.0 magnitude earthquake June 15th , 2013

Filed under: Earth Watch Report, Earthquakes, Global Disaster Watch — Leave a comment

June 15, 2013

Earth Watch Report - Earthquakes

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M6.0 – South of the Kermadec Islands

2013-06-15 11:20:34 UTC

Event Time

2013-06-15 11:20:34 UTC
2013-06-15 23:20:34 UTC+12:00 at epicenter
2013-06-15 06:20:34 UTC-05:00 system time

Location

33.895°S 179.455°E depth=172.4km (107.1mi)

Nearby Cities

313km (194mi) SSW of L’Esperance Rock, New Zealand
502km (312mi) NNE of Whakatane, New Zealand
511km (318mi) ENE of Whangarei, New Zealand
514km (319mi) NE of Tauranga, New Zealand
918km (570mi) NNE of Wellington, New Zealand

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Contributed by USGS National Earthquake Information Center

Instrumental Intensity

ShakeMap Intensity Image

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Tectonic Summary

Seismotectonics of the Eastern Margin of the Australia Plate

The eastern margin of the Australia plate is one of the most sesimically active areas of the world due to high rates of convergence between the Australia and Pacific plates. In the region of New Zealand, the 3000 km long Australia-Pacific plate boundary extends from south of Macquarie Island to the southern Kermadec Island chain. It includes an oceanic transform (the Macquarie Ridge), two oppositely verging subduction zones (Puysegur and Hikurangi), and a transpressive continental transform, the Alpine Fault through South Island, New Zealand.

Since 1900 there have been 15 M7.5+ earthquakes recorded near New Zealand. Nine of these, and the four largest, occurred along or near the Macquarie Ridge, including the 1989 M8.2 event on the ridge itself, and the 2004 M8.1 event 200 km to the west of the plate boundary, reflecting intraplate deformation. The largest recorded earthquake in New Zealand itself was the 1931 M7.8 Hawke’s Bay earthquake, which killed 256 people. The last M7.5+ earthquake along the Alpine Fault was 170 years ago; studies of the faults’ strain accumulation suggest that similar events are likely to occur again.

North of New Zealand, the Australia-Pacific boundary stretches east of Tonga and Fiji to 250 km south of Samoa. For 2,200 km the trench is approximately linear, and includes two segments where old (>120 Myr) Pacific oceanic lithosphere rapidly subducts westward (Kermadec and Tonga). At the northern end of the Tonga trench, the boundary curves sharply westward and changes along a 700 km-long segment from trench-normal subduction, to oblique subduction, to a left lateral transform-like structure.

Australia-Pacific convergence rates increase northward from 60 mm/yr at the southern Kermadec trench to 90 mm/yr at the northern Tonga trench; however, significant back arc extension (or equivalently, slab rollback) causes the consumption rate of subducting Pacific lithosphere to be much faster. The spreading rate in the Havre trough, west of the Kermadec trench, increases northward from 8 to 20 mm/yr. The southern tip of this spreading center is propagating into the North Island of New Zealand, rifting it apart. In the southern Lau Basin, west of the Tonga trench, the spreading rate increases northward from 60 to 90 mm/yr, and in the northern Lau Basin, multiple spreading centers result in an extension rate as high as 160 mm/yr. The overall subduction velocity of the Pacific plate is the vector sum of Australia-Pacific velocity and back arc spreading velocity: thus it increases northward along the Kermadec trench from 70 to 100 mm/yr, and along the Tonga trench from 150 to 240 mm/yr.

The Kermadec-Tonga subduction zone generates many large earthquakes on the interface between the descending Pacific and overriding Australia plates, within the two plates themselves and, less frequently, near the outer rise of the Pacific plate east of the trench. Since 1900, 40 M7.5+ earthquakes have been recorded, mostly north of 30°S. However, it is unclear whether any of the few historic M8+ events that have occurred close to the plate boundary were underthrusting events on the plate interface, or were intraplate earthquakes. On September 29, 2009, one of the largest normal fault (outer rise) earthquakes ever recorded (M8.1) occurred south of Samoa, 40 km east of the Tonga trench, generating a tsunami that killed at least 180 people.

Across the North Fiji Basin and to the west of the Vanuatu Islands, the Australia plate again subducts eastwards beneath the Pacific, at the North New Hebrides trench. At the southern end of this trench, east of the Loyalty Islands, the plate boundary curves east into an oceanic transform-like structure analogous to the one north of Tonga.

Australia-Pacific convergence rates increase northward from 80 to 90 mm/yr along the North New Hebrides trench, but the Australia plate consumption rate is increased by extension in the back arc and in the North Fiji Basin. Back arc spreading occurs at a rate of 50 mm/yr along most of the subduction zone, except near ~15°S, where the D’Entrecasteaux ridge intersects the trench and causes localized compression of 50 mm/yr in the back arc. Therefore, the Australia plate subduction velocity ranges from 120 mm/yr at the southern end of the North New Hebrides trench, to 40 mm/yr at the D’Entrecasteaux ridge-trench intersection, to 170 mm/yr at the northern end of the trench.

Large earthquakes are common along the North New Hebrides trench and have mechanisms associated with subduction tectonics, though occasional strike slip earthquakes occur near the subduction of the D’Entrecasteaux ridge. Within the subduction zone 34 M7.5+ earthquakes have been recorded since 1900. On October 7, 2009, a large interplate thrust fault earthquake (M7.6) in the northern North New Hebrides subduction zone was followed 15 minutes later by an even larger interplate event (M7.8) 60 km to the north. It is likely that the first event triggered the second of the so-called earthquake “doublet”.

More information on regional seismicity and tectonics

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Tags: Australia, New Zealand, Pacific, Pacific Plate, South Island, Tonga, Tonga Trench

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Greece – 7 EQ’s ranging from 6.2 to 4.5 Magnitude – 61km S of Pirgos June 15th , 2013

Filed under: Earthquakes, Global Disaster Watch, Earth Watch Report — 1 Comment

June 15, 2013

Earth Watch Report - Earthquakes

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M6.2 – 61km S of Pirgos, Greece

2013-06-15 16:11:00 UTC

Event Time

2013-06-15 16:11:00 UTC
2013-06-15 18:11:00 UTC+02:00 at epicenter
2013-06-15 11:11:00 UTC-05:00 system time

Location

34.449°N 25.044°E depth=10.0km (6.2mi)

Nearby Cities

61km (38mi) S of Pirgos, Greece
88km (55mi) SW of Ierapetra, Greece
97km (60mi) S of Irakleion, Greece
98km (61mi) S of Nea Alikarnassos, Greece
409km (254mi) SSE of Athens, Greece

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ibuted by USGS National Earthquake Information Center

Instrumental Intensity

ShakeMap Intensity Image

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M4.9 – 73km S of Pirgos, Greece

2013-06-15 16:28:56 UTC

Event Time

2013-06-15 16:28:56 UTC
2013-06-15 18:28:56 UTC+02:00 at epicenter
2013-06-15 11:28:56 UTC-05:00 system time

Location

34.339°N 25.059°E depth=21.6km (13.4mi)

Nearby Cities

73km (45mi) S of Pirgos, Greece
96km (60mi) SW of Ierapetra, Greece
109km (68mi) S of Irakleion, Greece
110km (68mi) S of Nea Alikarnassos, Greece
421km (262mi) SSE of Athens, Greece

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M4.6 – 73km S of Pirgos, Greece

2013-06-15 16:51:14 UTC

Event Time

2013-06-15 16:51:14 UTC
2013-06-15 18:51:14 UTC+02:00 at epicenter
2013-06-15 11:51:14 UTC-05:00 system time

Location

34.349°N 25.000°E depth=24.5km (15.2mi)

Nearby Cities

73km (45mi) S of Pirgos, Greece
99km (62mi) SW of Ierapetra, Greece
109km (68mi) S of Irakleion, Greece
110km (68mi) S of Nea Alikarnassos, Greece
419km (260mi) SSE of Athens, Greece

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M4.8 – 87km S of Pirgos, Greece

2013-06-15 16:59:34 UTC

Event Time

2013-06-15 16:59:34 UTC
2013-06-15 18:59:34 UTC+02:00 at epicenter
2013-06-15 11:59:34 UTC-05:00 system time

Location

34.216°N 25.049°E depth=28.4km (17.6mi)

Nearby Cities

87km (54mi) S of Pirgos, Greece
108km (67mi) SW of Ierapetra, Greece
123km (76mi) S of Irakleion, Greece
124km (77mi) S of Nea Alikarnassos, Greece
434km (270mi) SSE of Athens, Greece

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M4.9 – 67km SSW of Pirgos, Greece

2013-06-15 17:02:05 UTC

Event Time

2013-06-15 17:02:05 UTC
2013-06-15 19:02:05 UTC+02:00 at epicenter
2013-06-15 12:02:05 UTC-05:00 system time

Location

34.413°N 24.958°E depth=30.2km (18.8mi)

Nearby Cities

67km (42mi) SSW of Pirgos, Greece
97km (60mi) SW of Ierapetra, Greece
102km (63mi) S of Irakleion, Greece
103km (64mi) S of Nea Alikarnassos, Greece
411km (255mi) SSE of Athens, Greece

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M4.9 – 73km SSW of Pirgos, Greece

2013-06-15 17:22:02 UTC

Event Time

2013-06-15 17:22:02 UTC
2013-06-15 19:22:02 UTC+02:00 at epicenter
2013-06-15 12:22:02 UTC-05:00 system time

Location

34.348°N 24.984°E depth=3.2km (2.0mi)

Nearby Cities

73km (45mi) SSW of Pirgos, Greece
100km (62mi) SW of Ierapetra, Greece
109km (68mi) S of Irakleion, Greece
110km (68mi) S of Nea Alikarnassos, Greece
418km (260mi) SSE of Athens, Greece

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M4.5 – 76km S of Pirgos, Greece

2013-06-15 18:24:50 UTC

Event Time

2013-06-15 18:24:50 UTC
2013-06-15 20:24:50 UTC+02:00 at epicenter
2013-06-15 13:24:50 UTC-05:00 system time

Location

34.319°N 24.993°E depth=10.6km (6.6mi)

Nearby Cities

76km (47mi) S of Pirgos, Greece
102km (63mi) SW of Ierapetra, Greece
112km (70mi) S of Irakleion, Greece
113km (70mi) S of Nea Alikarnassos, Greece
422km (262mi) SSE of Athens, Greece

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Tectonic Summary

Seismotectonics of the Mediterranean Region and Vicinity

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M6.2 – 61km S of Pirgos, Greece (earthquake.usgs.gov)
Moderate 6.2 quake strikes south of Crete (channelnewsasia.com)
Moderate earthquake in Athens, Greece today (disaster-report.com)

Tags: Greece, earthquakes, Athens, Ierapetra, Nea Alikarnassos

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Nicaragua – 4 EQs ranging from 6.5 to 4.5 Mag – 50km W of Masachapa, June 15th 2013

Filed under: Earthquakes, Global Disaster Watch, Earth Watch Report — Leave a comment

June 15, 2013

Earth Watch Report – Earthquakes

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M6.5 – 50km W of Masachapa, Nicaragua

2013-06-15 17:34:29 UTC

Event Time

2013-06-15 17:34:29 UTC
2013-06-15 11:34:29 UTC-06:00 at epicenter
2013-06-15 12:34:29 UTC-05:00 system time

Location

11.725°N 86.975°W depth=35.8km (22.3mi)

Nearby Cities

50km (31mi) W of Masachapa, Nicaragua
60km (37mi) WSW of San Rafael del Sur, Nicaragua
74km (46mi) SW of Nagarote, Nicaragua
75km (47mi) SSW of La Paz Centro, Nicaragua
90km (56mi) WSW of Managua, Nicaragua

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Contributed by USGS National Earthquake Information Center

Instrumental Intensity

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M4.9 – 45km W of Masachapa, Nicaragua

2013-06-15 17:59:04 UTC

Event Time

2013-06-15 17:59:04 UTC
2013-06-15 11:59:04 UTC-06:00 at epicenter
2013-06-15 12:59:04 UTC-05:00 system time

Location

11.840°N 86.927°W depth=38.0km (23.6mi)

Nearby Cities

45km (28mi) W of Masachapa, Nicaragua
53km (33mi) W of San Rafael del Sur, Nicaragua
61km (38mi) SW of Nagarote, Nicaragua
61km (38mi) SSW of La Paz Centro, Nicaragua
80km (50mi) WSW of Managua, Nicaragua

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M5.1 – 49km W of Masachapa, Nicaragua

2013-06-15 18:10:42 UTC

Event Time

2013-06-15 18:10:42 UTC
2013-06-15 12:10:42 UTC-06:00 at epicenter
2013-06-15 13:10:42 UTC-05:00 system time

Location

11.751°N 86.969°W depth=40.6km (25.2mi)

Nearby Cities

49km (30mi) W of Masachapa, Nicaragua
58km (36mi) W of San Rafael del Sur, Nicaragua
72km (45mi) SW of Nagarote, Nicaragua
72km (45mi) SSW of La Paz Centro, Nicaragua
88km (55mi) WSW of Managua, Nicaragua

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M4.5 – 54km W of Masachapa, Nicaragua

2013-06-15 18:50:10 UTC

Event Time

2013-06-15 18:50:10 UTC
2013-06-15 12:50:10 UTC-06:00 at epicenter
2013-06-15 13:50:10 UTC-05:00 system time

Location

11.796°N 87.017°W depth=46.0km (28.6mi)

Nearby Cities

54km (34mi) W of Masachapa, Nicaragua
63km (39mi) W of San Rafael del Sur, Nicaragua
70km (43mi) SSW of La Paz Centro, Nicaragua
71km (44mi) SW of Nagarote, Nicaragua
91km (57mi) WSW of Managua, Nicaragua

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Tectonic Summary

Seismotectonics of the Caribbean Region and Vicinity

Extensive diversity and complexity of tectonic regimes characterizes the perimeter of the Caribbean plate, involving no fewer than four major plates (North America, South America, Nazca, and Cocos). Inclined zones of deep earthquakes (Wadati-Benioff zones), ocean trenches, and arcs of volcanoes clearly indicate subduction of oceanic lithosphere along the Central American and Atlantic Ocean margins of the Caribbean plate, while crustal seismicity in Guatemala, northern Venezuela, and the Cayman Ridge and Cayman Trench indicate transform fault and pull-apart basin tectonics.

Along the northern margin of the Caribbean plate, the North America plate moves westwards with respect to the Caribbean plate at a velocity of approximately 20 mm/yr. Motion is accommodated along several major transform faults that extend eastward from Isla de Roatan to Haiti, including the Swan Island Fault and the Oriente Fault. These faults represent the southern and northern boundaries of the Cayman Trench. Further east, from the Dominican Republic to the Island of Barbuda, relative motion between the North America plate and the Caribbean plate becomes increasingly complex and is partially accommodated by nearly arc-parallel subduction of the North America plate beneath the Caribbean plate. This results in the formation of the deep Puerto Rico Trench and a zone of intermediate focus earthquakes (70-300 km depth) within the subducted slab. Although the Puerto Rico subduction zone is thought to be capable of generating a megathrust earthquake, there have been no such events in the past century. The last probable interplate (thrust fault) event here occurred on May 2, 1787 and was widely felt throughout the island with documented destruction across the entire northern coast, including Arecibo and San Juan. Since 1900, the two largest earthquakes to occur in this region were the August 4, 1946 M8.0 Samana earthquake in northeastern Hispaniola and the July 29, 1943 M7.6 Mona Passage earthquake, both of which were shallow thrust fault earthquakes. A significant portion of the motion between the North America plate and the Caribbean plate in this region is accommodated by a series of left-lateral strike-slip faults that bisect the island of Hispaniola, notably the Septentrional Fault in the north and the Enriquillo-Plantain Garden Fault in the south. Activity adjacent to the Enriquillo-Plantain Garden Fault system is best documented by the devastating January 12, 2010 M7.0 Haiti strike-slip earthquake, its associated aftershocks and a comparable earthquake in 1770.

Moving east and south, the plate boundary curves around Puerto Rico and the northern Lesser Antilles where the plate motion vector of the Caribbean plate relative to the North and South America plates is less oblique, resulting in active island-arc tectonics. Here, the North and South America plates subduct towards the west beneath the Caribbean plate along the Lesser Antilles Trench at rates of approximately 20 mm/yr. As a result of this subduction, there exists both intermediate focus earthquakes within the subducted plates and a chain of active volcanoes along the island arc. Although the Lesser Antilles is considered one of the most seismically active regions in the Caribbean, few of these events have been greater than M7.0 over the past century. The island of Guadeloupe was the site of one of the largest megathrust earthquakes to occur in this region on February 8, 1843, with a suggested magnitude greater than 8.0. The largest recent intermediate-depth earthquake to occur along the Lesser Antilles arc was the November 29, 2007 M7.4 Martinique earthquake northwest of Fort-De-France.

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Magnitude 6.5 earthquake strikes Nicaragua! (fox41blogs.typepad.com)
Nicaragua Earthquake: 6.5 Quake Hits off Coast (theepochtimes.com)
Very Strong earthquake 79 km out of the Nicaragua coast (earthquake-report.com)
Strong Earthquake Reported Off Nicaragua Coast (theepochtimes.com)
Strong Earthquake Reported Off Nicaragua Coast (world.time.com)
Strong quake off Nicaragua poses no tsunami threat to Hawaii (staradvertiser.com)
Moderate earthquake – Near The Coast Of Nicaragua on June 15, 2013 (earthquake-report.com)
Moderate earthquake – Near Coast Of Nicaragua on June 15, 2013 (earthquake-report.com)

Tags: Nicaragua, United States Geological Survey, Managua, La Paz Centro, Nagarote, Masachapa, San Rafael del Sur

Comment

6.7 and 5.4 Magnitude Earthquakes – approx 176km ENE of Flying Fish Cove, Christmas Island 2013-06-13 16:47:23 UTC

Filed under: Earth Watch Report, Earthquakes, Global Disaster Watch — 1 Comment

June 13, 2013

Earth Watch Report – Earthquakes

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M6.7 – 176km ENE of Flying Fish Cove, Christmas Island 2013-06-13 16:47:23 UTC

Event Time

2013-06-13 16:47:23 UTC
2013-06-13 23:47:23 UTC+07:00 at epicenter
2013-06-13 11:47:23 UTC-05:00 system time

Location

9.989°S 107.227°E depth=9.7km (6.0mi)

Nearby Cities

176km (109mi) ENE of Flying Fish Cove, Christmas Island
307km (191mi) SSW of Kawalu, Indonesia
307km (191mi) SSW of Singaparna, Indonesia
309km (192mi) S of Banjar, Indonesia
419km (260mi) S of Jakarta, Indonesia

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Contributed by USGS National Earthquake Information Center

Instrumental Intensity

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M5.4 – 186km ENE of Flying Fish Cove, Christmas Island 2013-06-13 17:23:53 UTC

Event Time

2013-06-13 17:23:53 UTC
2013-06-14 00:23:53 UTC+07:00 at epicenter
2013-06-13 12:23:53 UTC-05:00 system time

Location

9.982°S 107.320°E depth=16.5km (10.2mi)

Nearby Cities

186km (116mi) ENE of Flying Fish Cove, Christmas Island
303km (188mi) SSW of Kawalu, Indonesia
303km (188mi) SSW of Singaparna, Indonesia
308km (191mi) S of Banjar, Indonesia
419km (260mi) S of Jakarta, Indonesia

****************************************************************************

6.7 magnitude Indonesian earthquake shakes Christmas Island

A magnitude 6.7 quake has shaken Christmas Island overnight.

A SHALLOW 6.7 magnitude earthquake has struck off Indonesia’s main island of Java, shaking Christmas Island, more than 400km away.

The quake struck at 11.47pm (local time) (12.47am WST) and was felt by residents on the island.

There are no immediate reports of damage.

According to Geoscience Australia, the quake had a magnitude of 6.7 and was triggered at a depth of 9km.

The US Geological Survey said the quake struck at 11.47pm (local time) at a depth of 11km in Indonesian waters some 170km east of Christmas Island, and 423km south of the Indonesian capital Jakarta.

The quake caused tall buildings in Jakarta to sway slightly.

The Indonesian Meteorology, Climatology and Geophysics Agency said there was no potential for a tsunami.
“There are no immediate reports of damage or casualties, but we know the quake was felt in several parts of Java,” an agency spokesman said. “There is no potential for a tsunami.”

The Pacific Tsunami Warning Centre did not issue an alert after the quake.

Indonesia sits on the Pacific “Ring of Fire” where continental plates collide, causing frequent seismic and volcanic activity.

Christmas Island is 2600km North West of Perth and about 450km south of Indonesia.It is the main destination for asylum seekers who take the perilous journey from Indonesia to Australia and currently houses hundreds of those waiting for asylum applications to be processed.

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Very Strong earthquake 165 km from Christmas Island (Australia), harmless for Indonesia (earthquake-report.com)
Strong quake near Christmas Island (radionz.co.nz)
Magnitude 6.7 quake strikes off Christmas Island-USGS (dailystar.com.lb)
6.7-magnitude quake strikes off Java (rinf.com)
6.7 quake strikes off Indonesia’s Java: USGS (voicerussia.com)

Tags: Christmas Island, Flying Fish Cove, Indonesia, Jakarta, Pacific Tsunami Warning Center, Singaparna

Comment

Australia – 5.8 – Northern Territory, 2013-06-09 14:22:12 UTC

Filed under: Earth Watch Report, Earthquakes, Global Disaster Watch — 1 Comment

June 10, 2013

Earth Watch Report - Earthquakes

photo Australia-58magEQJune9th2013_zps6461abf1.jpg

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M5.8 – Northern Territory, Australia

2013-06-09 14:22:12 UTC

Event Time

2013-06-09 14:22:12 UTC
2013-06-09 23:52:12 UTC+09:30 at epicenter
2013-06-09 09:22:12 UTC-05:00 system time

Location

25.966°S 131.976°E depth=1.1km (0.7mi)

Nearby Cities

316km (196mi) SW of Alice Springs, Australia
914km (568mi) NW of Port Augusta West, Australia
916km (569mi) NW of Port Augusta, Australia
953km (592mi) NW of Whyalla, Australia
1179km (733mi) NW of Adelaide, Australia

….

Contributed by USGS National Earthquake Information Center

Instrumental Intensity

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Seismicity of Western Australia

The body responsible for producing risk maps of Australia is the Australian Earthquake Engineering Society.

West Australian seismicity is treated separately on this site. Seismicity for the rest of Australia is summarised below.

BELOW – Map of earthquakes superimposed on Digital Terrain Model – courtesy Dan Clark, Geoscience Australia

-Below – Earthquake Hazard map of Australia, 1991 (Australian Geological Survey Organisation, Canberra: McCue et al., 1993). A new version of this map was published by Geoscience Australia in 2012.

This map shows that the coastal regions of NW Australia are the most earthquake prone, and the region of east Australia to the west of the dividing range is the least.

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Earthquake rocks Northern Territory’s southern region

By Gail Liston

Photo: The Territory’s south was rocked by a quake overnight. The epicentre was only 40 kilometres from the Aboriginal community of Ernabella. (Jason Om: ABC News)

Map: NT

Territorians are reporting cracked footpaths and shaking buildings after a magnitude 5.7 earthquake rocked the southern region overnight.

The epicentre of the quake was just 40 kilometres from the Aboriginal community of Ernabella.

Les Smith from the Kulgera Roadhouse said locals were shaken awake by the tremors.

“We’ve only got a couple of cracks actually in our cement paths going over towards the rooms,” Mr Smith said.

“One of the local blokes who came (out) of his room, he said he saw a couple of the staff quarters shaking, so we’d better bolt them down.”

The shaking has caught the interest of seismologists, because the area had a similar quake a year ago, but, before that, it had gone decades without one being recorded.

Seismologist Spiro Spiliopoulos from Geoscience Australia said the quake hit just before midnight, about 315 kilometres southwest of Alice Springs.

He said Ernabella suffered an earthquake of a similar size in March last year.

Read Full Article Here

….

Very Strong earthquake in a nearly unpopulated region of Australia (earthquake-report.com)

Tags: Adelaide, Alice Springs, Australia, Coordinated Universal Time, Northern Territory, Whyalla

Comment

Vanuatu – Two moderate Earthquakes 5.0 Magnitude – 68km ENE of Norsup,4.8 Magnitude – 278km SW of Vaini

Filed under: Earth Watch Report, Earthquakes, Global Disaster Watch — Leave a comment

June 7, 2013

Earth Watch Report - Earthquake

photo Vanuatu-50and48magEQsJune6th2013_zpsae1f7a53.jpg

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M5.0 – 68km ENE of Norsup, Vanuatu

2013-06-07 08:46:57 UTC

Event Time

2013-06-07 08:46:57 UTC
2013-06-07 19:46:57 UTC+11:00 at epicenter
2013-06-07 03:46:57 UTC-05:00 system time

Location

15.754°S 167.940°E depth=201.3km (125.1mi)

Nearby Cities

68km (42mi) ENE of Norsup, Vanuatu
86km (53mi) ESE of Luganville, Vanuatu
222km (138mi) N of Port-Vila, Vanuatu
575km (357mi) N of We, New Caledonia
725km (450mi) NNE of Dumbea, New Caledonia

….

M4.8 – 278km SW of Vaini, Tonga

2013-06-07 09:09:48 UTC

Event Time

2013-06-07 09:09:48 UTC
2013-06-06 21:09:48 UTC-12:00 at epicenter
2013-06-07 04:09:48 UTC-05:00 system time

Location

22.944°S 177.139°W depth=179.3km (111.4mi)

Nearby Cities

278km (173mi) SW of Vaini, Tonga
283km (176mi) SW of Nuku`alofa, Tonga
703km (437mi) SE of Suva, Fiji
804km (500mi) SE of Nadi, Fiji
809km (503mi) SSE of Lambasa, Fiji

….

Tectonic Summary

Seismotectonics of the Eastern Margin of the Australia Plate

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Vanuatu – 4.6 Magnitude Earthquake , 42km SE of Port-Vila, May 10th , 2013 (familysurvivalprotocol.com)

Tags: New Caledonia, Pacific, Pacific Plate, Vanuatu

Comment

5.2 Magnitude Earthquake – 5km SW of Koroni, Greece 2013-06-06 11:53:42 UTC

Filed under: Earth Watch Report, Earthquakes, Global Disaster Watch — Leave a comment

June 7, 2013

Earth Watch Report - Earthquake

photo Greece-52MagEQJune6th2013_zps7ec30834.jpg

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M5.2 – 5km SW of Koroni, Greece

2013-06-06 11:53:42 UTC

Event Time

2013-06-06 11:53:42 UTC
2013-06-06 14:53:42 UTC+03:00 at epicenter
2013-06-06 06:53:42 UTC-05:00 system time

Location

36.760°N 21.907°E depth=10.3km (6.4mi)

Nearby Cities

5km (3mi) SW of Koroni, Greece
35km (22mi) SSW of Kalamata, Greece
58km (36mi) SW of Sparta, Greece
93km (58mi) SSW of Tripolis, Greece
209km (130mi) SW of Athens, Greece

…

Tectonic Summary

Seismotectonics of the Mediterranean Region and Vicinity

…

Earthquake Shakes Athens (greece.greekreporter.com)

Tags: Eurasian Plate, Greece, Mediterranean, Mediterranean Sea, North Anatolian Fault, Turkey

Comment

Earthquake – Taiwan, Multiple areas, [Mainly Nantou County] : UPDATE

Filed under: Earth Watch Report, Earthquakes, Global Disaster Watch — Leave a comment

June 3, 2013

Earth Watch Report - Earthquakes

photo Taiwan-62magJune2nd2013_zps13caa928.jpg

….

03.06.2013

Earthquake

Taiwan

Multiple areas, [Mainly Nantou County]

….

Earthquake in Taiwan on Sunday, 02 June, 2013 at 14:56 (02:56 PM) UTC.

Back

Updated:	Monday, 03 June, 2013 at 10:06 UTC
Description
Taiwan’s National Fire Agency on Monday raised the death toll in Taiwan’s 6.3 magnitude earthquake from two to four. The quake struck Sunday afternoon in the central Taiwanese county of Nantou, which is mountainous and sparsely populated. The tremor was felt all over the island, but most severely in the central and southern regions. The NFA said the third victim died after he was hit by a falling rock in Nantou, and the fourth was buried under a landslide in the same location. The NFA said 19 people sustained serious injuries in the quake. Previously acknowledged fatalities were registered in Alishan, in southern Taiwan, where a man was killed by a rockslide while driving a car on a mountain road, and in Chushan, near the quake’s epicenter, where a man working at a farm was killed by a falling rock.

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Quake causes severe damage to schools in central Taiwan

A stone lodged in the middle of the road after the earthquake hit central Taiwan on June 2. (Photo/Xinhua)

A magnitude 6.3 earthquake that struck Taiwan Sunday has caused an estimated NT$10.3 million (US$344,000) worth of damage to schools in central Taiwan, according to the country’s Ministry of Education.

An initial survey showed that the earthquake resulted in damage to buildings and facilities at 90 schools in central Taiwan — mostly in Taichung and Nantou counties — the ministry said Monday.

Lugu Junior High School was closed Monday due to earthquake damage, the ministry said.

The quake also left three people injured on two school campuses in Nantou county, the ministry added.

Read Full Article Here

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Death Toll Rises to 4 in Taiwan Earthquake

TAIPEI, Taiwan June 3, 2013 (AP)

Taiwan’s National Fire Agency on Monday raised the death toll in Taiwan’s 6.3 magnitude earthquake from two to four.

The quake struck Sunday afternoon in the central Taiwanese county of Nantou, which is mountainous and sparsely populated. The tremor was felt all over the island, but most severely in the central and southern regions.

The NFA said the third victim died after he was hit by a falling rock in Nantou, and the fourth was buried under a landslide in the same location.

Read Full Article Here

….

Strong quake kills one in Taiwan (dawn.com)
Death toll rises to 4 in Taiwan earthquake (thestate.com)
Strong quake kills one in Taiwan (newsinfo.inquirer.net)
Taiwanese Earthquake Rocks Country’s Center, Killing Four and Injuring 20 (VIDEO) (hngn.com)
Death toll from Taiwan killer quake rises to four (newsinfo.inquirer.net)
6.5-Magnitude Quake Jolts Taiwan, 1 Dead (theepochtimes.com)
Taiwan – 6.2 Magnitude Earthquake June 2nd, 2013 (familysurvivalprotocol.com)
Earthquake in Taiwan (radionz.co.nz)
Year’s strongest earthquake strikes central Taiwan (wantchinatimes.com)
1 killed as 6.3-magnitude earthquake strikes Taiwan (straitstimes.com)

Tags: Alishan National Scenic Area, Chushan-Rishathaim, earthquake, Middle school, Nantou, Nantou County, National Fire Agency, NFA, Taichung, Taiwan

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Category: Earthquakes

Earth Watch Report - Earthquakes

2013-06-16 13:31:35 UTC

Event Time

Location

Nearby Cities

Related Links

Instrumental Intensity

2013-06-16 14:20:03 UTC

Event Time

Location

Nearby Cities

Related Links

Seismicity in Australia

TABLE OF IMPORTANT AUSTRALIAN EARTHQUAKES

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Earth Watch Report - Earthquakes

2013-06-16 21:39:09 UTC

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Instrumental Intensity

2013-06-16 23:43:40 UTC

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2013-06-17 02:55:02 UTC

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2013-06-17 07:34:42 UTC

Tectonic Summary

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Earth Watch Report - Earthquakes

2013-06-15 11:20:34 UTC

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Instrumental Intensity

Tectonic Summary

Earth Watch Report - Earthquakes

2013-06-15 16:11:00 UTC

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Instrumental Intensity

2013-06-15 16:28:56 UTC

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2013-06-15 16:51:14 UTC

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2013-06-15 16:59:34 UTC

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2013-06-15 17:02:05 UTC

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2013-06-15 17:22:02 UTC

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2013-06-15 18:24:50 UTC

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