Earthquake Activity Thread

[john pike]

M6.6 - 65km SW of Coquimbo, Chile 2013-10-31 23:03:59 UTC

 

http://earthquake.usgs.gov/earthquakes/eventpage/at00mvk2qo#summary

 

 

update if needed

 

no tsunami advisory raised

 

http://ptwc.weather.gov/ptwc/text.php?id=hawaii.TIBHWX.2013.10.31.2309

[john pike]

M6.4 - 152km ESE of Neiafu, Tonga

2013-11-02 18:53:47 UTC

 

 

at sea so damage unlikely

 

http://earthquake.usgs.gov/earthquakes/eventpage/usb000krlz#summary

 

no tsunami warning

 

http://ptwc.weather.gov/ptwc/text.php?id=hawaii.TIBHWX.2013.11.02.1901

[john pike]

an earlier quake reviewed and put at

 

M 6.0 - EASTER ISLAND REGION - 2013-11-02 15:52:47 UTC

http://www.emsc-csem.org/Earthquake/earthquake.php?id=342032#summary

 

at sea so no damage likely

 

no tsunami warning raised

[john pike]

Sunday November 3 2013, 11:03:44 UTC 5 hours ago Celebes Sea. 6.0 600.0

 

 

 

http://quakes.globalincidentmap.com/#

 

at sea and no tsunami advisory raised

[john pike]

Six school children were injured and cracks appeared in several buildings, including five schools, in Assam as a moderate earthquake rocked the north eastern Indian state on Wednesday, officials said. The epicenter of the tremor measuring 5.5 intensity on the Richter Scale was at Borpathar area in Karbi Anglong district. Six school children were injured in Golaghat district when a part of a middle school building cracked down. The tremor occurred at 9.46 am and was felt at several places in the state.

 

http://hisz.rsoe.hu/alertmap/site/?pageid=event_desc&edis_id=EQ-20131107-41550-IND

[john pike]

M 5.6 - NEAR EAST COAST OF HONSHU, JAPAN - 2013-11-09 22:37:51 UTC

 

http://www.emsc-csem.org/Earthquake/earthquake.php?id=343058#summary

 

http://www.emsc-csem.org/Earthquake/Testimonies/comments.php?id=343058

 

posted due to location

 

tokyo 38km away and felt as well

 

not sure re damage reports but will update if any come in

[john pike]

More than 100 houses were totally destroyed and 256 partially in Tajikistan as a result of three tremors recorded over the last few days. "The epicentre of the tremors was in the Rudaki district, 21-26 kilometres south-east of Dushanbe. Some 104 houses were totally destroyed and 256 partially," head of the Emergency Situations and Civil Defense Committee's press service, Orif Nozimov told journalists. According to him, at the moment a special commission is working at the site to evaluate the consequences of the disaster. The Geophysical Service of the Academy of Sciences said that over the past few days Tajikistan experienced three major earthquakes. According to seismologists, the last one of a 4.0 magnitude was recorded on Monday at 07:05 (local time). The epicentre was located 21 kilometres south-east of Dushanbe, in the Rudaki district. An earthquake of 5.0 magnitudes also occurred at the same site on Sunday at 17:03 local time. The first earthquake in Tajikistan with the epicentre in the same district was recorded on Sunday at 10:15 (local time). The magnitude at the epicentre was 5.0.

 

http://hisz.rsoe.hu/alertmap/site/?pageid=event_desc&edis_id=EQ-20131111-41593-TJK

[john pike]

M6.6 - 172km S of Ust'-Kamchatsk Staryy, Russia

 

http://earthquake.usgs.gov/earthquakes/eventpage/usb000kw1x#summary

[john pike]

M6.1 - Scotia Sea 2013-11-13 23:45:48 UTC

10km deep

 

 

http://www.emsc-csem.org/Earthquake/earthquake.php?id=343606#map

 

http://earthquake.usgs.gov/earthquakes/eventpage/usb000kxhr#summary

 

no damage or tsunami likely

 

odd location to see one here

[john pike]

Strong 6.8 magnitude quake hits far south Atlantic: USGS

 

 

http://gulftoday.ae/portal/4bad954d-6452-4cf7-9113-c8bd7dd5fd2a.aspx

http://www.emsc-csem.org/Earthquake/earthquake.php?id=343917

Edited November 16, 2013 by john pike

[john pike]

A 5.5 magnitude earthquake hit eastern Japan on Saturday. Tremors were felt from inside Tokyo skyscrapers, and the city’s high-speed train service was halted as a precaution.

 

http://rt.com/news/japan-east-earthquake-tokyo-841/

[john pike]

M7.8 - Scotia Sea 2013-11-17 09:04:55 UTC

10km deep so very shallow

 

 

 

Tectonic Summary

The November 17, 2013 earthquake in the Scotia Sea, to the northwest of the South Orkney Islands, occurred as the result of either left-lateral strike slip faulting on an east-west oriented plane, or right-lateral faulting on a north-south plane. The location of the event adjacent to the east-west oriented plate boundary between the Antarctica and Scotia Sea plates implies the left-lateral faulting scenario is most likely. At the latitude of this earthquake, the Antarctica plate moves eastwards with respect to the Scotia Sea plate at a velocity of 6 mm/yr.

The November 17 earthquake is the latest in a series of moderate-to-large earthquakes to strike the same region over the past several days. The sequence began with a M 6.1 event on November 13 approximately 50 km to the west of the November 17 quake. On November 15, a M 6.8 earthquake struck very close to the preceding M 6.1. Since then, 9 aftershocks have been recorded in the area, ranging from M 4.7 to M 5.4, both near the previous earthquakes and in the same approximate location as the November 17 event.

Though the region surrounding the Scotia Sea is familiar with earthquakes, the majority occur around the subduction zone adjacent to the South Sandwich Islands, to the east of the November 17 earthquake. Just two events of M6 or greater have occurred within 250 km of this earthquake over the past 40 years – a M 6.0 230 km to the west in September 1979, and a M 7.6 160 km to the east in August 2003. These two events involved normal and oblique-normal faulting, respectively, associated with the same plate boundary. Neither is known to have caused damage or fatalities.

 

 

http://earthquake.usgs.gov/earthquakes/eventpage/usb000l0gq

 

 

http://earthquake.usgs.gov/earthquakes/map/

 

quite a few large quakes showing there at present

 

 

http://ptwc.weather.gov/ptwc/text.php?id=caribe.TIBCAX.2013.11.17.0918

EVALUATION A DESTRUCTIVE WIDESPREAD TSUNAMI THREAT DOES NOT EXIST BASED ON HISTORICAL EARTHQUAKE AND TSUNAMI DATA. HOWEVER - THERE IS THE SMALL POSSIBILITY OF A LOCAL OR REGIONAL TSUNAMI THAT COULD AFFECT COASTS LOCATED USUALLY NO MORE THAN A FEW HUNDRED KILOMETERS FROM THE EARTHQUAKE EPICENTER. AUTHORITIES IN THE REGION NEAR THE EPICENTER SHOULD BE MADE AWARE OF THIS POSSIBILITY.

http://www.deepseawaters.com/underwater-volcanoes.php

Edited November 17, 2013 by john pike

[BARRY]

south Island NZ 23:36 local time 4.7 at 8Kms deep so quite shallow no damage or injury's

[john pike]

M6.1 - 117km NNE of Tobelo, Indonesia 2013-11-19 13:32:51 UTC

http://www.emsc-csem.org/Earthquake/earthquake.php?id=344432

 

[john pike]

M 6.0 - STATE OF YAP, MICRONESIA - 2013-11-19 15:16:48 UTC

 

http://www.emsc-csem.org/Earthquake/earthquake.php?id=344450#summary

 

 

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M 6.0 - PAGAN REG., N. MARIANA ISLANDS - 2013-11-19 17:00:47 UTC

 

 

http://www.emsc-csem.org/Earthquake/earthquake.php?id=344461#summary

 

 

http://hisz.rsoe.hu/alertmap/site/index.php?pageid=seism_volcano&rid=368043

 

near these volcanoes

Edited November 19, 2013 by john pike

[john pike]

M 5.5 - JILIN, CHINA - 2013-11-22 22:04:25 UTC

http://www.emsc-csem.org/Earthquake/earthquake.php?id=344961#summary

 

Magnitude mb 5.5 Region JILIN, CHINA Date time 2013-11-22 22:04:25.0 UTC Location 44.59 N ; 124.02 E Depth 10 km Distances

634 km N of Pyongyang, North Korea / pop: 3,222,000 / local time: 07:04:25.0 2013-11-23

 

131 km NW of Changchun, China / pop: 2,537,421 / local time: 06:04:25.0 2013-11-23

 

91 km SW of Fuyu, China / pop: 138,704 / local time: 06:04:25.0 2013-11-23

 

posted due to location

 

will udate when more info comes in

[john pike]

M 6.5 - FIJI REGION - 2013-11-23 07:48:32 UTC

 

very deep

 

 

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.

 

http://earthquake.usgs.gov/earthquakes/eventpage/usb000l51g#summary

[john pike]

BEIJING (AFP) -- Multiple earthquakes hit northeast China Saturday, with a 5.5 magnitude the strongest among them, according to seismologists, causing serious damage to homes.

 

The 5.5 magnitude quake hit at 6:04 a.m. (2204 GMT Friday), 34 kilometres (21 miles) north of Changling in Jilin province at a shallow depth of 12.5 kilometres, the U.S. Geological Survey said.

 

It was followed around thirty minutes later by a 4.9 magnitude quake just south of Qian'an town, with a similar tremor felt a day earlier in the same area.

 

http://www.marketwatch.com/story/multiple-earthquakes-hit-northeast-china-2013-11-23-84855125

 

this is an update to the post 2 above

[john pike]

M5.0 - 13km WNW of Yenicaga, Turkey 2013-11-24 20:49:39 UTC

DYFI? - IV

 

only 9km deep

 

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.

 

http://earthquake.usgs.gov/earthquakes/eventpage/usb000l5v1#summary

 

 

 

posted due to location and population

 

will update re damage if any reports come in

[john pike]

  M7.0 - South Atlantic Ocean 2013-11-25 06:27:33 UTC

 

http://earthquake.usgs.gov/earthquakes/map/

 

a few aftershocks there as well

 

tsunami advisory raised but none noted

 

additional information

 

The November 25, 2013 M7.0 earthquake (06:27:33 UTC) southwest of the Falkland Islands in the South Atlantic Ocean occurred as the result of strike slip faulting, on either a left-lateral fault striking ENE-WSW, or a right-lateral structure striking NNW-SSE.  The location of the earthquake, near the ENE-WSW trending plate boundary between the South America and Scotia tectonic plates, suggests it is likely associated with left-lateral faulting along this margin. At the location of this earthquake, the Scotia plate moves ENE with respect to South America at a rate of approximately 9.5 mm/yr.

 

The November 25, 06:27:33 earthquake was the largest of 5 M5+ events that occurred in a similar area over an approximate 2-hour period, including a M5.6 earthquake 24 seconds prior to the M7.0 mainshock. Though this region experiences moderate-sized earthquakes relatively frequently – 15 M5+ events have occurred within 250 km of the November 25 earthquake over the past 40 years – large events are fairly uncommon. The largest nearby earthquake over the same time period was a M6.6 event in September 1993, 210 km to the east of the November 25 earthquake.

 

http://earthquake.usgs.gov/earthquakes/eventpage/usb000l5zn#summary

[john pike]

M 5.6 - SOUTHERN IRAN - 2013-11-28 13:51:36 UTC

only 10 km deep

 

 

http://www.emsc-csem.org/Earthquake/earthquake.php?id=345874#summary

 

posted due to location and population

 

will update should more info comes in

[john pike]

7 dead, 45 injured as 5.6 earthquake hits 60km from Iran’s Bushehr nuclear plant

A powerful earthquake has hit Iran, killing seven and injuring a further 45, IRNA state news agency reported. The disaster's epicenter was in an area 62km north east of Bushehr, according to the USGS, where Iran has its only nuclear power plant.

 

The head of Iran's Crisis Management organization, Hassan Qadami, confirmed the initial 30 casualties to IRNA. However, Bushehr's Governor, Fereydoon Hasanvand, updated the figure to 45 on Thursday night. He added that 'total calm' had settled in the area.

 

Fars news agency placed the death toll higher, at eight, adding that helicopters would be posted to the area on Friday to assess the extent of the damage.

 

http://rt.com/news/iran-bushehr-region-earthquake-450/

[john pike]

a little late

 

M6.4 - Kepulauan Barat Daya, Indonesia

http://earthquake.usgs.gov/earthquakes/eventpage/usb000l8mb#summary

 

 

The Australia-Pacific plate boundary is over 4000 km long on the northern margin, from the Sunda (Java) trench in the west to the Solomon Islands in the east. The eastern section is over 2300 km long, extending west from northeast of the Australian continent and the Coral Sea until it intersects the east coast of Papua New Guinea. The boundary is dominated by the general northward subduction of the Australia plate.

 

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M6.0 - 69km SE of Sinabang, Indonesia

http://earthquake.usgs.gov/earthquakes/eventpage/usb000l8pb#summary

 

The plate boundary southwest of Sumatra is part of a long tectonic collision zone that extends over 8000 km from Papua in the east to the Himalayan front in the west. The Sumatra-Andaman portion of the collision zone forms a subduction zone megathrust plate boundary, the Sunda-Java trench, which accommodates convergence between the Indo-Australia and Sunda plates. This convergence is responsible for the intense seismicity and volcanism in Sumatra. The Sumatra Fault, a major transform structure that bisects Sumatra, accommodates the northwest-increasing lateral component of relative plate motion.

Edited December 2, 2013 by john pike

[john pike]

another quake in an area which may cause some problems

 

M5.5 - 1km ENE of Tibanbang, Philippines 2013-12-03 23:58:53 UTC

61 km deep

 

Nearby Cities

• 1km (1mi) ENE of Tibanbang, Philippines
• 31km (19mi) SSE of Lupon, Philippines
• 37km (23mi) SSW of Mati, Philippines
• 60km (37mi) SSE of Pantukan, Philippines
• 926km (575mi) W of Koror Town, Palau

 

http://earthquake.usgs.gov/earthquakes/eventpage/usb000layi#summary

 

 

http://www.emsc-csem.org/Earthquake/earthquake.php?id=346638#map

 

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).

 

update when more info comes in

Edited December 4, 2013 by john pike

[john pike]

M 6.1 - KURIL ISLANDS - 2013-12-08 17:24:54 UTC

25km deep

 

 

no tsunami or damage

 

happened yesterday but was adjusted to over 6 today