Earthquake Swarms

[john pike]

north of iceland

 

335.6 km NNE of Kolbeinsey

 

swarm showing a little earlier

 

 

 

http://en.vedur.is/earthquakes-and-volcanism/earthquakes/atlantic/#view=table

 

have to wait to see if iceland give any further info

 

http://en.vedur.is/earthquakes-and-volcanism/earthquakes/atlantic/#view=map

 

link thanks to iceland met office

[john pike]

http://m.emsc.eu/earthquake/latest.php?page=1&min_mag=n/a&max_mag=n/a&date=n/a&euromed=World

Swarm at present in Sicily Italy

Including a 4.2 and a 4.1

Both 10km deep

[john pike]

swarm continues in alaska

 

 

 

http://www.aeic.alaska.edu/recent/macsub/index.html

 

see link for full list

[john pike]

2013-08-18  20:08:43.015min ago 38.70  N 22.71  E 10 3.5  GREECE       2013-08-18  17:17:05.03hr 06min ago 35.25  N 24.98  E 15 2.5  CRETE, GREECE 1     2013-08-18  16:39:21.03hr 44min ago 38.70  N 22.72  E 13 4.1  GREECE       2013-08-18  16:15:24.34hr 08min ago 37.58  N 26.73  E 7 2.5  DODECANESE ISLANDS, GREECE       2013-08-18  13:42:25.96hr 41min ago 38.70  N 22.71  E 7 3.4  GREECE 1   F 2013-08-18  10:42:54.09hr 40min ago 38.70  N 22.72  E 14 4.0  GREECE       2013-08-18  04:28:57.0 38.70  N 22.72  E 7 3.2  GREECE 4   F 2013-08-18  03:22:59.0 36.82  N 21.93  E 2 3.3  SOUTHERN GREECE       2013-08-18  01:50:56.0 34.31  N 25.05  E 1 2.6  CRETE, GREECE       2013-08-18  01:47:28.0 34.31  N 25.07  E 1 2.9  CRETE, GREECE             2013-08-17  21:58:19.0 34.37  N 25.17  E 1 2.5  CRETE, GREECE       2013-08-17  18:29:44.7 38.12  N 20.47  E 13 3.2  GREECE       2013-08-17  13:54:23.0 35.33  N 26.13  E 2 2.7  CRETE, GREECE     F 2013-08-17  13:29:09.5 38.70  N 22.71  E 4 3.3  GREECE       2013-08-17  06:24:11.0 35.52  N 27.11  E 12 2.9  DODECANESE ISLANDS, GREECE       2013-08-17  04:34:55.6 37.27  N 26.90  E 21 2.0  DODECANESE ISLANDS, GREECE       2013-08-17  03:36:22.4 38.70  N 22.70  E 5 2.7  GREECE           F 2013-08-16  08:55:41.0 40.22  N 21.84  E 2 2.8  GREECE

 

uptake in quake activity at greece at present

 

including a 3.5

http://www.emsc-csem.org/Earthquake/earthquake.php?id=330575

 

and a 4.1

http://www.emsc-csem.org/Earthquake/earthquake.php?id=330562

[john pike]

 

 

http://www.aeic.alaska.edu/Seis/recent/macsub/

 

swarm continues in alaska

 

see link above as too many to list

[john pike]

http://www.seis.utah.edu/req2webdir/recenteqs/Quakes/quakes0.html

 

47 quakes today as at 23.41 gmt

 

 

based mainly ene of west yellowstone

 

heres the yellowstone graphs

http://www.isthisthingon.org/Yellowstone/daythumbs.php?glayout=1

 

 

thats the closest i can post at present due to the old faithful graph not available

 

what is happening here at present?

 

no idea but certainly busy there at present

[john pike]

was quiet yesterday

 

however

map 2.5  2013/09/15 11:07:13 44.564N 110.822W  7.6   25 km (16 mi) ESE of  West Yellowstone, MT

2.2 2013/09/15 11:06:42 44.568N 110.811W 8.3 26 km (16 mi) ESE of West Yellowstone, MT

 

 

MAP 3.6 2013/09/15 09:53:02 44.559N 110.830W 10.6 25 km (15 mi) ESE of West Yellowstone, MT

 

map 2.7 2013/09/15 05:17:30 44.567N 110.820W 10.4 25 km (16 mi) ESE of West Yellowstone, MT

 

map 2.6 2013/09/15 05:13:15 44.555N 110.830W 10.7 25 km (15 mi) ESE of West Yellowstone, MT

 

MAP 3.4 2013/09/15 05:10:19 44.564N 110.822W 10.6 25 km (16 mi) ESE of West Yellowstone, MT

 

http://www.seis.utah.edu/req2webdir/recenteqs/Quakes/quakes0.html

 

close graph

 

http://www.isthisthingon.org/Yellowstone/daythumbs.php?glayout=1

 

link above for all graphs

Edited September 15, 2013 by john pike

[john pike]

earthquake swarm in eastern turkey

http://www.emsc-csem.org/Earthquake/

 

near

Nemrut Dagi volcano

http://www.volcanodiscovery.com/nemrut_dagi.html

 

probably just plate movement but worth a watch for now

[john pike]

 

 

http://en.vedur.is/earthquakes-and-volcanism/earthquakes/atlantic/#view=map

 

163 quakes on list since yesterday (wednesday 00.01)

 

http://en.vedur.is/earthquakes-and-volcanism/earthquakes/atlantic/#view=table

 

**images and links thanks to iceland met office**

 

 

main location is tjornes fracture zone

 

very likely plate movement but lively none the less

[john pike]

earthquake swarm still ongoing re above post

 

looks techtonic but worth keeping a watch re below

 

Tjörnes Fracture Zone volcano

submarine volcano unknown summit elevation, North of Iceland, 66.3°N / -17.1°W

http://volcanodiscovery.com/tjoernes-fracture-zone-earthquakes.html

 

and more info

http://www.volcanolive.com/tjornes.html

[john pike]

getting a fair few quakes appear here at present

 

http://www.emsc-csem.org/Earthquake/earthquake.php?id=336671#map

 

 

 

 

http://hisz.rsoe.hu/alertmap/site/index.php?pageid=seism_last&rid=355944

 

list above

 

 

although spain do get quakes

 

i have not seen much happen in this area before

 

 

http://vulcan.wr.usgs.gov/Imgs/Gif/Spain/Maps/map_spain_volcanoes.gif

 

olot volcano field looks to far away for that

 

just have to watch to see what happens with this

[john pike]

 

Biggest earthquakes during the last 48 hours Size Time Quality Location 3.2 01 Oct 06:14:17 Checked 12.7 km NW of Gjögurtá 2.9 01 Oct 07:41:08 Checked 13.9 km NW of Gjögurtá 2.7 30 Sep 22:05:20 83.3 16.7 km NW of Gjögurtá

 

Two earthquakes reaching magnitude 3 and 3.2 occurred this morning at 06:14 and 07:41 offshore North Iceland, 10 km NW of Gjögurtá. They are a part of swarm activity which has been ongoing since September 25

 

http://en.vedur.is/#tab=skjalftar

 

 

link and images thanks to icelandic met office

 

http://hisz.rsoe.hu/alertmap/site/index.php?pageid=seism_volcano&rid=356263

 

volcanoes local to the current swarm

Edited October 1, 2013 by john pike

[john pike]

More than 1,000 minor earthquakes have been picked up by sensors on the Tjornes fissure zone in Northeast Iceland in the past few days. The earthquake swarm, which began on Tuesday and is still ongoing, is not considered likely to lead to more serious activity. "They occur in a very limited area at a depth of 9-13 km (6-8 miles). They are of a similar magnitude; the largest quakes measure around three. Such activity strongly indicates an intrusion, which is common in Iceland," geophysicist Kristín Jónsdóttir at the Icelandic Met Office said. Kristín explained that intrusion is caused by magma forcing its way to the earth's crust. When asked whether similar earthquake swarms have occurred in this area before, Kristín responded: "It is rather unusual to have such dense activity right there. But the area is known for seismic activity."

 

http://hisz.rsoe.hu/alertmap/site/?pageid=event_desc&edis_id=EQ-20131001-41111-ISL

[john pike]

Earthquakes offshore north Iceland

1.10.2013

Two earthquakes reaching magnitude 3 and 3.2 occurred this morning at 06:14 and 07:41 offshore North Iceland, 10 km NW of Gjögurtá.

They are a part of swarm activity which has been ongoing since September 25. Roughly 1000 earthquakes have been recorded in the swarm.

 

 

http://en.vedur.is/

 

link and images thanks to icelandic met office

 

whats causing this

 

probably plate movement but there are undersea volcanoes in the area and unless one shows

 

up as erupting no one knows for sure

 

Tjörnes Fracture Zone (North of Iceland): An intense earthquake swarm has been going on offshore North Iceland, 10 km NW of Gjögurtá, since 25 September. This morning, 2 earthquakes reaching magnitude 3 and 3.2 occurred at 06:14 and 07:41. In total, more than 1000 quakes have been recorded by IMO.
The depths of the quakes vary from about 15 km depth (crust-mantle boundary) to near surface. The area is located on an active fault line related to rifting, and a possible cause of the earthquake swarm could be a magmatic intrusion.

 

 

will update as and when more info comes in

 

recent quake

Magnitude ML 3.8 Region ICELAND REGION Date time 2013-10-02 19:40:24.6 UTC Location 66.30 N ; 18.59 W Depth 15 km Distances 286 km NE of Reykjavík, Iceland / pop: 113,906 / local time: 19:40:24.6 2013-10-02
72 km N of Akureyri / pop: 16,563 / local time: 19:40:00.0 2013-10-02
21 km NE of Siglufjörðyour / pop: 1,391 / local time: 19:40:00.0 2013-10-02

 

http://www.emsc-csem.org/Earthquake/earthquake.php?id=337219

Edited October 2, 2013 by john pike

[john pike]

Mysterious earthquake swarm damages many villages in Galati, Eastern Romania

For a couple of weeks, an unusual earthquake swarm is going on in Eastern Romania, close to Moldovia border. Galati is the province where the earthquakes are happening.

 

http://earthquake-report.com/2013/10/04/mysterious-earthquake-swarm-damages-many-villages-in-galati-eastern-romania/

 

http://sofiaglobe.com/2013/10/06/5-5-richter-scale-earthquake-in-romanias-vrancea-felt-in-bulgarian-towns/

 

 

Edited October 6, 2013 by john pike

[john pike]

http://hisz.rsoe.hu/alertmap/index2.php

 

there are 3 swarms at present

 

1 in california area

 

1 in alaska

 

1 in hawaii

 

will update should anymore info come through although it is difficult at present

[john pike]

http://www.emsc-csem.org/Earthquake/earthquake.php?id=362246#map

 

http://www.emsc-csem.org/Earthquake/

 

http://earthquake.usgs.gov/earthquakes/world/index.php?region=Greece

 

 

 

greece is seeing a fair uptake at present

 

http://gogreece.about.com/od/newsmedia/a/earthquakes.htm

 

maybe nothing but worth keeping an eye on for now

Edited February 27, 2014 by john pike

[john pike]

http://www.emsc-csem.org/Earthquake/

 

a swarm of earthquakes at puerto rico at present

 

 

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 mate.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.

 

http://earthquake.usgs.gov/earthquakes/eventpage/pr14066014#summary

 

http://quakes.globalincidentmap.com/

 

maybe nothing but worth keeping an eye on

[john pike]

http://www.emsc-csem.org/Earthquake/?view=1

 

 OFFSHORE TARAPACA, CHILE

 

we have had 2 larger quakes so far

 

one a 6.2 and one a 6.3

 

these may be aftershocks but with such varied depths this may be pre-shocks

 

 

will update as this continues

 

http://www.emsc-csem.org/Earthquake/earthquake.php?id=367216#map

 

http://earthquake.usgs.gov/earthquakes/eventpage/usc000nn3h#summary

 

 

http://pubs.usgs.gov/of/2010/1083/e/

Edited March 24, 2014 by john pike

[john pike]

Earthquake Swarm Continues in Central Oklahoma

 

 

http://www.okgeosurvey1.gov/pages/earthquakes/recent-earthquakes.php

 

see link above for list

 

its still unclear what the cause of this is at present

Edited April 1, 2014 by john pike

[swebby]

http://www.emsc-csem.org/Earthquake/?view=1

 

 OFFSHORE TARAPACA, CHILE

 

we have had 2 larger quakes so far

 

one a 6.2 and one a 6.3

 

these may be aftershocks but with such varied depths this may be pre-shocks

 

 

will update as this continues

 

http://www.emsc-csem.org/Earthquake/earthquake.php?id=367216#map

 

http://earthquake.usgs.gov/earthquakes/eventpage/usc000nn3h#summary

 

 

http://pubs.usgs.gov/of/2010/1083/e/

 

On the basis of today would you say pre shocks JP?

[john pike]

hi swebby

 

i reckon we can say that now

 

although there could still be a big aftershock

Edited April 2, 2014 by john pike

[poseidon]

This may already have been posted previously, if so apologies, but there is currently an earthquake swarm in New Ollerton, Nottinghamshire, that has been in progress for several months....

 

http://www.quakes.bgs.ac.uk/earthquakes/recent_uk_events.html

 

Luckily they are only tiny-weeny ones and more than likely related to the coal mining.

[john pike]

http://www.emsc-csem.org/Earthquake/

 

nevada

 

more info to follow if any more comes in