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Tag Archive: Japan

Flow of Tainted Water Is Latest Crisis at Japan Nuclear Plant

Filed under: Clean up, Contamination, Crossroads News : Changes In The World Around Us And Our Place In It, Disaster Management, Earth Watch Report, Global Community, Global Disaster Watch, Nuclear, Nuclear Plant Incidents, Nuclear Power Truths, Radiation — Leave a comment

May 4, 2013

Kyodo News, via Associated Press

Gray and silver storage tanks filled with radioactive wastewater are sprawling over the grounds of the Fukushima Daiichi plant.

By MARTIN FACKLER

Published: April 29, 2013

TOKYO — Two years after a triple meltdown that grew into the world’s second worst nuclear disaster, the Fukushima Daiichi nuclear power plant is faced with a new crisis: a flood of highly radioactive wastewater that workers are struggling to contain.

Multimedia

Graphic

Struggling to Contain Radioactive Wastewater

Groundwater is pouring into the plant’s ravaged reactor buildings at a rate of almost 75 gallons a minute. It becomes highly contaminated there, before being pumped out to keep from swamping a critical cooling system. A small army of workers has struggled to contain the continuous flow of radioactive wastewater, relying on hulking gray and silver storage tanks sprawling over 42 acres of parking lots and lawns. The tanks hold the equivalent of 112 Olympic-size pools.

But even they are not enough to handle the tons of strontium-laced water at the plant — a reflection of the scale of the 2011 disaster and, in critics’ view, ad hoc decision making by the company that runs the plant and the regulators who oversee it. In a sign of the sheer size of the problem, the operator of the plant, Tokyo Electric Power Company, or Tepco, plans to chop down a small forest on its southern edge to make room for hundreds more tanks, a task that became more urgent when underground pits built to handle the overflow sprang leaks in recent weeks.

“The water keeps increasing every minute, no matter whether we eat, sleep or work,” said Masayuki Ono, a general manager with Tepco who acts as a company spokesman. “It feels like we are constantly being chased, but we are doing our best to stay a step in front.”

While the company has managed to stay ahead, the constant threat of running out of storage space has turned into what Tepco itself called an emergency, with the sheer volume of water raising fears of future leaks at the seaside plant that could reach the Pacific Ocean.

That quandary along with an embarrassing string of mishaps — including a 29-hour power failure affecting another, less vital cooling system — have underscored an alarming reality: two years after the meltdowns, the plant remains vulnerable to the same sort of large earthquake and tsunami that set the original calamity in motion.

There is no question that the Fukushima plant is less dangerous than it was during the desperate first months after the accident, mostly through the determined efforts of workers who have stabilized the melted reactor cores, which are cooler and less dangerous than they once were.

But many experts warn that safety systems and fixes at the plant remain makeshift and prone to accidents.

The jury-rigged cooling loop that pours water over the damaged reactor cores is a mazelike collection of pumps, filters and pipes that snake two and a half miles along the ground through the plant. And a pool for storing used nuclear fuel remains perched on the fifth floor of a damaged reactor building as Tepco struggles to move the rods to a safer location.

The situation is worrisome enough that Shunichi Tanaka, a longtime nuclear power proponent who is the chairman of the newly created watchdog Nuclear Regulation Authority, told reporters after the announcement of the leaking pits that “there is concern that we cannot prevent another accident.”

A growing number of government officials and advisers now say that by entrusting the cleanup to the company that ran the plant before the meltdowns, Japanese leaders paved the way for a return to the insider-dominated status quo that prevailed before the disaster.

Even many scientists who acknowledge the complexity of cleaning up the worst nuclear disaster since Chernobyl fear that the water crisis is just the latest sign that Tepco is lurching from one problem to the next without a coherent strategy.

“Tepco is clearly just hanging on day by day, with no time to think about tomorrow, much less next year,” said Tadashi Inoue, an expert in nuclear power who served on a committee that drew up the road map for cleaning up the plant.

But the concerns extend well beyond Tepco. While doing a more rigorous job of policing Japan’s nuclear industry than regulators before the accident, the Nuclear Regulation Authority has a team of just nine inspectors to oversee the more than 3,000 workers at Fukushima.

And a separate committee created by the government to oversee the cleanup is loaded with industry insiders, including from the Ministry of Trade, in charge of promoting nuclear energy, and nuclear reactor manufacturers like Toshiba and Hitachi. The story of how the Fukushima plant ended up swamped with water, critics say, is a cautionary tale about the continued dangers of leaving decisions about nuclear safety to industry insiders.

Read  Full Article Here

Related

• Mishaps Underscore Weaknesses of Japanese Nuclear Plant (April 11, 2013)

• Small Leak Is Discovered at Plant in Fukushima (April 15, 2013)

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

Nuclear power plant stricken in 2011 tsunami now leaking radioactive groundwater: report

The water contains strontium, a byproduct of nuclear fission, and the Fukushima Dai-ichi plant is leaking it at a rate of 75 gallons per minute.

By Beth Stebner / NEW YORK DAILY NEWS

Wednesday, May 1, 2013, 2:35 PM

1K

43

1

http://assets.nydailynews.com/polopoly_fs/1.1332272.1367432781%21/img/httpImage/image.jpg_gen/derivatives/landscape_635/japan-fukushima.jpg” width=”635″ height=”423″ />

© Issei Kato / Reuters/REUTERS

Members of the media wear protective suits at the tsunami-crippled Fukushima Daiichi nuclear power plant in Fukushima prefecture in March. Two years after the disaster, contaminated groundwater containing radioactive strontium, a byproduct of nuclear fission, is leaking from the damaged reactor.

The Japanese nuclear plant stricken by a deadly tsunami two years ago is facing the dire issue of containing radioactive waste water, as operators rush to repair yet another possible disaster.

The March 11, 2011 earthquake and tsunami left the Fukushima Dai-ichi plant stricken, badly damaging its reactors, which serve to cool nuclear cores.

Now contaminated groundwater containing radioactive strontium, a byproduct of nuclear fission, is leaking from damaged reactor structures at an alarming rate of 75 gallons per minute.

PHOTOS: TOP 20 PHOTOS OF JAPAN TSUNAMI

© KYODO Kyodo / Reuters/REUTERS

Tanks of radiation-contaminated water are stored onsite at Fukishima.

The Dai-Ichi plant is owned by the Tokyo Electric Power Company, also known as Tepco, which has struggled to handle the plant’s meltdown and subsequent recovery.

The nuclear incident has been described as one of the most devastating in history, second only to Russia’s Chernobyl incident of the 1980s.

As the New York Times notes, news of the leaking groundwater comes at an embarrassing time for Tepco, which experienced a 29-hour power outage last month which affected another of the plant’s cooling systems.

RELATED: RADIOACTIVE WATER LEAK FEARED AT JAPAN NUKE PLANT

 

Read Full Article Here

Related Stories

• Japan probes alleged cover-up at Fukushima nuclear plant 
• Japan is no Chernobyl, physicist says
• Radioactive water leak feared at tsunami-crippled nuke plant in Japan
• Fish off Fukushima still show levels of radioactivity a year later

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

Related articles

• HAZMAT – Japan, Prefecture of Fukushima, [Fukushima Daiichi nuclear power plant] (familysurvivalprotocol.com)
• Leaks, Rats and Radioactivity: Fukushima’s Nuclear Cleanup Is Faltering (science.time.com)
• Fukushima nuclear plant leaking contaminated water (abc.net.au)
• ‘Flood of Highly Radioactive Wastewater’ Overwhelms Fukushima Crews (commondreams.org)
• IAEA Team’s Initial Review of Japan’s Plans to Decommission #Fukushima I Nuke Plant: “Define an end-state of the Fukushima Daiichi Nuclear Power Station site” (ex-skf.blogspot.com)
• Latest News From Fukushima? It’s Not looking Good (stirringtrouble.wordpress.com)
• Tokyo Electric Power Co. said thousands of gallons of highly radioactive water has leaked from an underground pool at the crippled Fukushima Dai-Ichi nuclear plant and may have seeped into the soil. (familysurvivalprotocol.com)
• Fukushima Nuclear Crisis Update for April 30th to May 2nd, 2013 (greenpeace.org)
• Fukushima nuclear plant leaking contaminated water (democraticunderground.com)
• Fukushima nuclear buildings getting flooded with radioactive water (nuclear-news.net)

Tags: Fukushima, Fukushima Daiichi Nuclear Power Plant, Japan, Kyodo News, Nuclear Regulation Authority, Pacific Ocean, Tepco, Tokyo Electric Power Company

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6.1 Magnitude Earthquake – Izu Islands, Japan region April 20th, 2013

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

April 21, 2013

Earth Watch Report  -  Earthquakes

…

6.1

Izu Islands, Japan region

2013-04-21 03:22:16

29.915°N

138.926°E

424.1

…

M6.1 – Izu Islands, Japan region 2013-04-21 03:22:16 UTC

 

Event Time

1. 2013-04-21 03:22:16 UTC
2. 2013-04-21 12:22:16 UTC+09:00 at epicenter
3. 2013-04-20 22:22:16 UTC-05:00 system time

Location

29.915°N 138.926°E depth=424.1km (263.5mi)

Nearby Cities

1. 360km (224mi) SSW of Hachijo-jima, Japan
2. 506km (314mi) SE of Shingu, Japan
3. 523km (325mi) S of Oyama, Japan
4. 526km (327mi) S of Shimoda, Japan
5. 644km (400mi) S of Tokyo, Japan

Related Links

• Additional earthquake information for Japan
• View location in Google Maps

…

…

Contributed by USGS National Earthquake Information Center

Instrumental Intensity

…

Tectonic Summary

Seismotectonics of the Philippine Sea and Vicinity

The Philippine Sea plate is bordered by the larger Pacific and Eurasia plates and the smaller Sunda plate. The Philippine Sea plate is unusual in that its borders are nearly all zones of plate convergence. The Pacific plate is subducted into the mantle, south of Japan, beneath the Izu-Bonin and Mariana island arcs, which extend more than 3,000 km along the eastern margin of the Philippine Sea plate. This subduction zone is characterized by rapid plate convergence and high-level seismicity extending to depths of over 600 km. In spite of this extensive zone of plate convergence, the plate interface has been associated with few great (M>8.0) ‘megathrust’ earthquakes. This low seismic energy release is thought to result from weak coupling along the plate interface (Scholz and Campos, 1995). These convergent plate margins are also associated with unusual zones of back-arc extension (along with resulting seismic activity) that decouple the volcanic island arcs from the remainder of the Philippine Sea Plate (Karig et al., 1978; Klaus et al., 1992).

South of the Mariana arc, the Pacific plate is subducted beneath the Yap Islands along the Yap trench. The long zone of Pacific plate subduction at the eastern margin of the Philippine Sea Plate is responsible for the generation of the deep Izu-Bonin, Mariana, and Yap trenches as well as parallel chains of islands and volcanoes, typical of circum-pacific island arcs. Similarly, the northwestern margin of the Philippine Sea plate is subducting beneath the Eurasia plate along a convergent zone, extending from southern Honshu to the northeastern coast of Taiwan, manifested by the Ryukyu Islands and the Nansei-Shoto (Ryukyu) trench. The Ryukyu Subduction Zone is associated with a similar zone of back-arc extension, the Okinawa Trough. At Taiwan, the plate boundary is characterized by a zone of arc-continent collision, whereby the northern end of the Luzon island arc is colliding with the buoyant crust of the Eurasia continental margin offshore China.

Along its western margin, the Philippine Sea plate is associated with a zone of oblique convergence with the Sunda Plate. This highly active convergent plate boundary extends along both sides the Philippine Islands, from Luzon in the north to the Celebes Islands in the south. The tectonic setting of the Philippines is unusual in several respects: it is characterized by opposite-facing subduction systems on its east and west sides; the archipelago is cut by a major transform fault, the Philippine Fault; and the arc complex itself is marked by active volcanism, faulting, and high seismic activity. Subduction of the Philippine Sea Plate occurs at the eastern margin of the archipelago along the Philippine Trench and its northern extension, the East Luzon Trough. The East Luzon Trough is thought to be an unusual example of a subduction zone in the process of formation, as the Philippine Trench system gradually extends northward (Hamburger et al., 1983). On the west side of Luzon, the Sunda Plate subducts eastward along a series of trenches, including the Manila Trench in the north, the smaller less well-developed Negros Trench in the central Philippines, and the Sulu and Cotabato trenches in the south (Cardwell et al., 1980). At its northern and southern terminations, subduction at the Manila Trench is interrupted by arc-continent collision, between the northern Philippine arc and the Eurasian continental margin at Taiwan and between the Sulu-Borneo Block and Luzon at the island of Mindoro. The Philippine fault, which extends over 1,200 km within the Philippine arc, is seismically active. The fault has been associated with major historical earthquakes, including the destructive M7.6 Luzon earthquake of 1990 (Yoshida and Abe, 1992). A number of other active intra-arc fault systems are associated with high seismic activity, including the Cotabato Fault and the Verde Passage-Sibuyan Sea Fault (Galgana et al., 2007).
More information on regional seismicity and tectonics

….

Related articles

• 6.2-magnitude quake jolts central Japan / Swarm of at least 6 registered quakes Monday February 25th, 2013 (familysurvivalprotocol.com)
• Japan : Six Earthquakes Registered Ranging from 4.4 to 6.0 Magnitude on April 2nd , 2013 (familysurvivalprotocol.com)
• 5.4 Magnitude Earthquake – 51km SE of Iwaki, Japan (familysurvivalprotocol.com)
• A strong earthquake swarm, presumably caused by a magmatic intrusion has begun on the Japanese Izu Islands at the Miyake Volcano (familysurvivalprotocol.com)
• Japan – Eight Earthquakes Ranging From 5.3 to 4.4 Magnitude Registered April 18th, 2013 (familysurvivalprotocol.com)
• 20 Earthquakes Ranging from 5.7 to 4.2 Magnitude Registered in Japan in one day April 17th, 2013 (familysurvivalprotocol.com)
• Very strong earthquake near East Coast Of Honshu, Japan, close to Miyake-Jima volcano (earthquake-report.com)
• Moderate earthquake – Izu Islands, Japan Region on April 18, 2013 (earthquake-report.com)

Tags: Japan, Luzon, Pacific, Pacific Plate, Philippine, Philippine Sea Plate, RYUKYU ISLANDS, Yap

Comment

Russia – Four Earthquakes Ranging from 7.2 to 4.6 Magnitude in one day . April 19th, 2013

Filed under: Uncategorized — 9 Comments

April 19, 2013

Earth Watch Report  -  Earthquakes

                  Contributed by     USGS National Earthquake Information Center

                                       Instrumental Intensity

                    Contributed by   USGS National Earthquake Information Center

                                         Instrumental Intensity

…

7.2 250km ENE of Kuril’sk, Russia 2013-04-19 03:05:53 46.182°N 150.796°E 122.3

…

M7.2 – 250km ENE of Kuril’sk, Russia 2013-04-19 03:05:53 UTC

Event Time

1. 2013-04-19 03:05:53 UTC
2. 2013-04-19 15:05:53 UTC+12:00 at epicenter
3. 2013-04-18 22:05:53 UTC-05:00 system time

Location

46.182°N 150.796°E depth=122.3km (76.0mi)

Nearby Cities

1. 250km (155mi) ENE of Kuril’sk, Russia
2. 521km (324mi) NE of Nemuro, Japan
3. 527km (327mi) NE of Shibetsu, Japan
4. 566km (352mi) ENE of Abashiri, Japan
5. 1490km (926mi) NE of Tokyo, Japan

Related Links

• Additional earthquake information for Russia
• View location in Google Maps

Tectonic Summary

The April 19, 2013 M 7.2 earthquake ENE of Kuril’sk, Russia, occurred as a result of oblique normal faulting at intermediate depths within the subducting lithosphere of the Pacific plate. At the latitude of this earthquake, the Pacific plate converges with the North America plate (and the smaller Okhotsk microplate) towards the west-northwest at a velocity of approximately 82 mm/yr, and subducts beneath the Kuril Islands at the Kuril-Kamchatka trench, some 160 km to the southeast of the April 19 event. The depth of this earthquake, and its oblique-faulting mechanism, indicate that it involved intraplate faulting within the subducting slab, rather than being an interplate thrust event on the shallower seismogenic zone between the two tectonic plates.

The Kuril-Kamchatka arc has frequent moderate-to-large earthquakes, and has hosted over three-dozen M 6.5+ events within 250 km of the April 19 earthquake over the past 40 years. None are known to have caused shaking-related fatalities. The largest of these was the November 2006 M 8.3 interplate thrust event, approximately 200 km to the east of the April 19 earthquake. However, while the Pacific slab is seismically active in this region to depths of almost 700 km, just one of these nearby M 6.5+ events has occurred at depths greater than 70 km – a M 6.7 event in October 1994, 130 km to the southwest.

Intermediate depth (70 – 300km) and deep-focus (depth > 300 km) earthquakes are distinguished from shallow earthquakes (depth < 70 km) by the nature of their tectonic setting, and are in general much less hazardous than their shallow counterparts, though they may be felt at great distances from their epicenters.

Seismotectonics of the Kuril-Kamchatka Arc

The Kuril-Kamchatka arc extends approximately 2,100 km from Hokkaido, Japan, along the Kuril Islands and the Pacific coast of the Kamchatka Peninsula to its intersection with the Aleutian arc near the Commander Islands, Russia. It marks the region where the Pacific plate subducts into the mantle beneath the Okhotsk microplate, part of the larger North America plate. This subduction is responsible for the generation of the Kuril Islands chain, active volcanoes located along the entire arc, and the deep offshore Kuril-Kamchatka trench. Relative to a fixed North America plate, the Pacific plate is moving towards the northwest at a rate that increases from 75 mm/year near the northern end of the arc to 83 mm/year in the south.

Plate motion is predominantly convergent along the Kuril-Kamchatka arc with obliquity increasing towards the southern section of the arc. The subducting Pacific plate is relatively old, particularly adjacent to Kamchatka where its age is greater than 100 Ma. Consequently, the Wadati-Benioff zone is well defined to depths of approximately 650 km. The central section of the arc is comprised of an oceanic island arc system, which differs from the continental arc systems of the northern and southern sections. Oblique convergence in the southern Kuril arc results in the partitioning of stresses into both trench-normal thrust earthquakes and trench-parallel strike-slip earthquakes, and the westward translation of the Kuril forearc. This westward migration of the Kuril forearc currently results in collision between the Kuril arc in the north and the Japan arc in the south, resulting in the deformation and uplift of the Hidaka Mountains in central Hokkaido.

The Kuril-Kamchatka arc is considered one of the most seismically active regions in the world. Deformation of the overriding North America plate generates shallow crustal earthquakes, whereas slip at the subduction zone interface between the Pacific and North America plates generates interplate earthquakes that extend from near the base of the trench to depths of 40 to 60 km. At greater depths, Kuril-Kamchatka arc earthquakes occur within the subducting Pacific plate and can reach depths of approximately 650 km.

This region has frequently experienced large (M>7) earthquakes over the past century. Since 1900, seven great earthquakes (M8.3 or larger) have also occurred along the arc, with mechanisms that include interplate thrust faulting, and intraplate faulting. Damaging tsunamis followed several of the large interplate megathrust earthquakes. These events include the February 3, 1923 M8.4 Kamchatka, the November 6,1958 M8.4 Etorofu, and the September 25, 2003 M8.3 Hokkaido earthquakes. A large M8.5 megathrust earthquake occurred on October 13, 1963 off the coast of Urup, an island along the southern Kuril arc, which generated a large tsunami in the Pacific Ocean and the Sea of Okhotsk, and caused run-up wave heights of up to 4-5 m along the Kuril arc. The largest megathrust earthquake to occur along the entire Kurile-Kamchatka arc in the 20th century was the November 4, 1952 M9.0 event. This earthquake was followed by a devastating tsunami with run-up wave heights as high as 12 m along the coast of Paramushir, a small island immediately south of Kamchatka, causing significant damage to the city of Severo-Kurilsk.

…

6.0

135km SE of Severo-Kuril’sk, Russia

2013-04-19 19:58:40

49.938°N

157.639°E

18.6

…

M6.0 – 135km SE of Severo-Kuril’sk, Russia 2013-04-19 19:58:40 UTC

 

Event Time

1. 2013-04-19 19:58:40 UTC
2. 2013-04-20 06:58:40 UTC+11:00 at epicenter
3. 2013-04-19 14:58:40 UTC-05:00 system time

Location

49.938°N 157.639°E depth=18.6km (11.6mi)

Nearby Cities

1. 135km (84mi) SE of Severo-Kuril’sk, Russia
2. 337km (209mi) S of Vilyuchinsk, Russia
3. 352km (219mi) SSW of Petropavlovsk-Kamchatskiy, Russia
4. 365km (227mi) S of Yelizovo, Russia
5. 2147km (1334mi) NE of Tokyo, Japan

Related Links

• Additional earthquake information for Russia
• View location in Google Maps

…

Tectonic Summary

Seismotectonics of the Kuril-Kamchatka Arc

The Kuril-Kamchatka arc extends approximately 2,100 km from Hokkaido, Japan, along the Kuril Islands and the Pacific coast of the Kamchatka Peninsula to its intersection with the Aleutian arc near the Commander Islands, Russia. It marks the region where the Pacific plate subducts into the mantle beneath the Okhotsk microplate, part of the larger North America plate. This subduction is responsible for the generation of the Kuril Islands chain, active volcanoes located along the entire arc, and the deep offshore Kuril-Kamchatka trench. Relative to a fixed North America plate, the Pacific plate is moving towards the northwest at a rate that increases from 75 mm/year near the northern end of the arc to 83 mm/year in the south.

Plate motion is predominantly convergent along the Kuril-Kamchatka arc with obliquity increasing towards the southern section of the arc. The subducting Pacific plate is relatively old, particularly adjacent to Kamchatka where its age is greater than 100 Ma. Consequently, the Wadati-Benioff zone is well defined to depths of approximately 650 km. The central section of the arc is comprised of an oceanic island arc system, which differs from the continental arc systems of the northern and southern sections. Oblique convergence in the southern Kuril arc results in the partitioning of stresses into both trench-normal thrust earthquakes and trench-parallel strike-slip earthquakes, and the westward translation of the Kuril forearc. This westward migration of the Kuril forearc currently results in collision between the Kuril arc in the north and the Japan arc in the south, resulting in the deformation and uplift of the Hidaka Mountains in central Hokkaido.

The Kuril-Kamchatka arc is considered one of the most seismically active regions in the world. Deformation of the overriding North America plate generates shallow crustal earthquakes, whereas slip at the subduction zone interface between the Pacific and North America plates generates interplate earthquakes that extend from near the base of the trench to depths of 40 to 60 km. At greater depths, Kuril-Kamchatka arc earthquakes occur within the subducting Pacific plate and can reach depths of approximately 650 km.

This region has frequently experienced large (M>7) earthquakes over the past century. Since 1900, seven great earthquakes (M8.3 or larger) have also occurred along the arc, with mechanisms that include interplate thrust faulting, and intraplate faulting. Damaging tsunamis followed several of the large interplate megathrust earthquakes. These events include the February 3, 1923 M8.4 Kamchatka, the November 6,1958 M8.4 Etorofu, and the September 25, 2003 M8.3 Hokkaido earthquakes. A large M8.5 megathrust earthquake occurred on October 13, 1963 off the coast of Urup, an island along the southern Kuril arc, which generated a large tsunami in the Pacific Ocean and the Sea of Okhotsk, and caused run-up wave heights of up to 4-5 m along the Kuril arc. The largest megathrust earthquake to occur along the entire Kurile-Kamchatka arc in the 20th century was the November 4, 1952 M9.0 event. This earthquake was followed by a devastating tsunami with run-up wave heights as high as 12 m along the coast of Paramushir, a small island immediately south of Kamchatka, causing significant damage to the city of Severo-Kurilsk.

On October 4,1994, a large (M8.3) intraplate event occurred within the subducted oceanic lithosphere off the coast of Shikotan Island causing intense ground shaking, landslides, and a tsunami with run-up heights of up to 10 m on the island.

The most recent megathrust earthquake in the region was the November 15, 2006 M8.3 Kuril Island event, located in the central section of the arc. Prior to this rupture, this part of the subduction zone had been recognized as a seismic gap spanning from the northeastern end of the 1963 rupture zone to the southwestern end of the 1952 rupture. Two months after the 2006 event, a great (M8.1) normal faulting earthquake occurred on January 13, 2007 in the adjacent outer rise region of the Pacific plate. It has been suggested that the 2007 event may have been caused by the stresses generated from the 2006 earthquake.

More information on regional seismicity and tectonics

….

4.6

143km SE of Severo-Kuril’sk, Russia

2013-04-19 20:12:37

49.897°N

157.723°E

10.1

…

M4.6 – 143km SE of Severo-Kuril’sk, Russia 2013-04-19 20:12:37 UTC

Event Time

1. 2013-04-19 20:12:37 UTC
2. 2013-04-20 07:12:37 UTC+11:00 at epicenter
3. 2013-04-19 15:12:37 UTC-05:00 system time

Location

49.897°N 157.723°E depth=10.1km (6.3mi)

Nearby Cities

1. 143km (89mi) SE of Severo-Kuril’sk, Russia
2. 340km (211mi) S of Vilyuchinsk, Russia
3. 356km (221mi) S of Petropavlovsk-Kamchatskiy, Russia
4. 368km (229mi) S of Yelizovo, Russia
5. 2149km (1335mi) NE of Tokyo, Japan

Related Links

• Additional earthquake information for Russia
• View location in Google Maps

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4.7

133km SE of Severo-Kuril’sk, Russia

2013-04-19 21:22:32

49.940°N

157.608°E

38.8

…

M4.7 – 133km SE of Severo-Kuril’sk, Russia 2013-04-19 21:22:32 UTC

Event Time

1. 2013-04-19 21:22:32 UTC
2. 2013-04-20 08:22:32 UTC+11:00 at epicenter
3. 2013-04-19 16:22:32 UTC-05:00 system time

Location

49.940°N 157.608°E depth=38.8km (24.1mi)

Nearby Cities

1. 133km (83mi) SE of Severo-Kuril’sk, Russia
2. 337km (209mi) S of Vilyuchinsk, Russia
3. 352km (219mi) SSW of Petropavlovsk-Kamchatskiy, Russia
4. 365km (227mi) S of Yelizovo, Russia
5. 2146km (1333mi) NE of Tokyo, Japan

Related Links

• Additional earthquake information for Russia
• View location in Google Maps

…

…

Tags: Coordinated Universal Time, Japan, Kamchatka Peninsula, Kuril, Kuril Island, National Earthquake Information Center, Russia, United States Geological Survey

Comment

A strong earthquake swarm, presumably caused by a magmatic intrusion has begun on the Japanese Izu Islands at the Miyake Volcano

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

April 19, 2013

Miyake Island

View from Kōzu-shimaLocationIzu Islands, Tokyo, JapanCoordinates34.079°N 139.529°EGeologyTypeStratovolcanoLast eruption2010

Miyake Village 三宅村
—  City  —
Location of Miyake Village in Tokyo (Miyake)
Miyake Village
Coordinates: 34°4′N 139°31′E

Above image Sources

Miyake volcano (Izu Islands, Japan): earthquake swarm

Friday Apr 19, 2013 06:46 AM | BY: TOMPFEIFFER

A strong earthquake swarm, presumably caused by a magmatic intrusion, has started Wednesday at Miyake volcano in the Japanese Izu Islands.
On Wednesday alone, JMA recorded 136 earthquakes with magnitudes up to an earthquake of magnitude 5.6, which was widely felt in the region.
The quakes’ hypocenters are clustered in a NNW-SSW trending area about 10 km west of the island, at depths of 5-15 km.

…

Map of recent quakes near Miyake-Shimy volcano

Depth vs time of quakes under Miake volcano (note: data after 17 April were not yet available)

….

stratovolcano 815 m / 2,674 ft   Izu Islands, Japan, 34.08°N / 139.53°E   Current status: restless (2 out of 5)

Last update: 19 Apr 2013
Typical eruption style: explosive
Miyake-shima volcano eruptions: 2010 (April-July), 2009 (April), 2008 (May), 2008 (Jan), 2006 (Aug), 2006 (Feb), 2005, 2000-04, 1983, 1962, 1940, 1874, 1835, 1811, 1763-69, 1712-14, 1709, 1643, 1595, 1535, 1469, 1154, 1085

Last earthquakes nearby:

Time	Mag. / Depth	Distance	Location
Thu, 18 Apr
Thu, 18 Apr 14:29 UTC	M 2.9 / 14 km	16 km	三宅島近海
Thu, 18 Apr 13:59 UTC	M 2.1 / 9 km	9 km	三宅島近海 (Near miyakejima)
Thu, 18 Apr 12:45 UTC	M 1.8 / 7 km	14 km	三宅島近海
Thu, 18 Apr 12:45 UTC	M 2.3 / 11 km	14 km	三宅島近海
Thu, 18 Apr 12:30 UTC	M 1.6 / 13 km	12 km	三宅島近海

View all recent quakes

Miyake-jima (三宅島 Miyakejima) is an active stratovolcano in the northern Izu Islands, about 200 km south of Tokyo. It forms a 8 km diameter circular island and is one of the most frequently active volcanoes in the island chain. It typically erupts every 10-30 years. The last series of eruptions started in June 2000 after 17 years of repose.
The volcano has had many eruptions both from summit and flank vents, including submarine eruptions. Many eruptions have caused considerable damage to the island.

Background:

The island of Miyake-jima is the submerged part of a low-angle stratovolcano that rises about 1100 m from the sea floor. It is mainly basaltic and has small summit calderas, one which is 3.5 km wide and was formed during a major explosive eruption about 2500 years ago.
There are numerous fissure vents on its flanks and flank cones, craters and maars near the coast.

Read More Here

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• Miyake Island earthquakes brought back memories of volcanic eruption in 2000 (japandailypress.com)
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• Dozens of earthquakes strike Japanese islands (upi.com)
• Japan island rocked by 30 quakes (newsinfo.inquirer.net)
• Volcanic Japanese island hit by series of quakes (thehindu.com)
• Shaky week for volcanoes (volcanocafe.wordpress.com)
• Moderate earthquake – Izu Islands, Japan Region on April 18, 2013 (earthquake-report.com)
• [Just in case] Miyake-jima looking glowing in live camera after M6.2 (fukushima-diary.com)
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• M5.8 hit offshore Miyagi 3 hours after M6.2 in Miyake-jima (fukushima-diary.com)

Tags: Earthquake swarm, Izu Island, Japan, Japan Meteorological Agency, Miyake-jima, Miyakejima, Tokyo, volcano

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