Earth Quake: 2011

Saturday, December 31, 2011

Magnitude 7.0 - IZU ISLANDS, JAPAN REGION

Earthquake Details

This event has been reviewed by a seismologist.

Magnitude	7.0 (Preliminary magnitude — update expected within 15 minutes)
Date-Time	Sunday, January 01, 2012 at 05:27:54 UTC Sunday, January 01, 2012 at 02:27:54 PM at epicenter
Location	31.400°N, 138.600°E
Depth	371 km (230.5 miles) set by location program
Region	IZU ISLANDS, JAPAN REGION
Distances	219 km (136 miles) SSW (211°) from Hachijo-jima, Izu Islands, Japan 376 km (234 miles) SSE (167°) from Hamamatsu, Honshu, Japan 399 km (248 miles) S (177°) from Shizuoka, Honshu, Japan 486 km (302 miles) SSW (193°) from TOKYO, Japan
Location Uncertainty	Error estimate not available
Parameters	NST= 11, Nph=0, Dmin=0 km, Rmss=0 sec, Gp= 0, M-type="moment" magnitude from initial P wave (tsuboi method) (Mi/Mwp), Version=A
Source	NOAA Pacific Tsunami Warning Center
Event ID	pt12001000

Thursday, December 29, 2011

Magnitude 5.1 - TONGA

This event has been reviewed by a seismologist.

Magnitude	5.1
Date-Time	Wednesday, December 28, 2011 at 21:55:43 UTC Thursday, December 29, 2011 at 11:55:43 AM at epicenter Time of Earthquake in other Time Zones
Location	17.709°S, 174.739°W
Depth	238.9 km (148.5 miles)
Region	TONGA
Distances	131 km (81 miles) NW of Neiafu, Tonga 221 km (137 miles) SSW of Hihifo, Tonga 381 km (236 miles) N of NUKU`ALOFA, Tonga 2359 km (1465 miles) NNE of Auckland, New Zealand
Location Uncertainty	horizontal +/- 32.8 km (20.4 miles); depth +/- 20.5 km (12.7 miles)
Parameters	NST= 34, Nph= 34, Dmin=526.5 km, Rmss=0.81 sec, Gp=148°, M-type=body wave magnitude (Mb), Version=4
Source	Magnitude: USGS NEIC (WDCS-D) Location: USGS NEIC (WDCS-D)
Event ID	usc0007e09

Magnitude 4.4 - OAXACA, MEXICO

This event has been reviewed by a seismologist.

Magnitude	4.4
Date-Time	Wednesday, December 28, 2011 at 21:45:53 UTC Wednesday, December 28, 2011 at 03:45:53 PM at epicenter Time of Earthquake in other Time Zones
Location	16.466°N, 94.852°W
Depth	64.3 km (40.0 miles)
Region	OAXACA, MEXICO
Distances	50 km (31 miles) NE of Salina Cruz, Oaxaca, Mexico 130 km (80 miles) WNW of Tonala, Chiapas, Mexico 187 km (116 miles) W of Tuxtla Gutierrez, Chiapas, Mexico 562 km (349 miles) SE of MEXICO CITY, D.F., Mexico
Location Uncertainty	horizontal +/- 18.5 km (11.5 miles); depth +/- 9.9 km (6.2 miles)
Parameters	NST= 80, Nph= 83, Dmin=477.6 km, Rmss=1.15 sec, Gp=176°, M-type=body wave magnitude (Mb), Version=2
Source	Magnitude: USGS NEIC (WDCS-D) Location: USGS NEIC (WDCS-D)
Event ID	usc0007e11

Magnitude 5.4 - SOUTH SANDWICH ISLANDS REGION

This event has been reviewed by a seismologist.

Magnitude	5.4
Date-Time	Wednesday, December 28, 2011 at 20:32:31 UTC Wednesday, December 28, 2011 at 06:32:31 PM at epicenter Time of Earthquake in other Time Zones
Location	60.638°S, 25.914°W
Depth	31 km (19.3 miles)
Region	SOUTH SANDWICH ISLANDS REGION
Distances	182 km (113 miles) S of Bristol Island, South Sandwich Islands 445 km (276 miles) S of Visokoi Island, South Sandwich Islands 2189 km (1360 miles) SE of STANLEY, Falkland Islands 3726 km (2315 miles) SSE of BUENOS AIRES, D.F., Argentina
Location Uncertainty	horizontal +/- 19.3 km (12.0 miles); depth +/- 5.6 km (3.5 miles)
Parameters	NST=118, Nph=121, Dmin=950.7 km, Rmss=1.39 sec, Gp= 86°, M-type=body wave magnitude (Mb), Version=4
Source	Magnitude: USGS NEIC (WDCS-D) Location: USGS NEIC (WDCS-D)
Event ID	usc0007dwy

Magnitude 2.5 - PUERTO RICO REGION

This event has been reviewed by a seismologist.

Magnitude	2.5
Date-Time	Wednesday, December 28, 2011 at 18:42:02 UTC Wednesday, December 28, 2011 at 02:42:02 PM at epicenter Time of Earthquake in other Time Zones
Location	18.653°N, 67.169°W
Depth	72.2 km (44.9 miles)
Region	PUERTO RICO REGION
Distances	22 km (14 miles) NNW (335°) from Rafael Hernández, PR 23 km (14 miles) N (352°) from Cabán, PR 23 km (14 miles) NW (318°) from Isabela, PR 92 km (57 miles) NW (321°) from Ponce, PR 111 km (69 miles) W (280°) from SAN JUAN, Puerto Rico
Location Uncertainty	horizontal +/- 1.9 km (1.2 miles); depth +/- 2.1 km (1.3 miles)
Parameters	NST= 5, Nph= 5, Dmin=53.5 km, Rmss=0.21 sec, Gp=288°, M-type=duration magnitude (Md), Version=0
Source	Puerto Rico Seismic Network, University of Puerto Rico
Event ID	pr11362004

Magnitude 2.6 - SOUTHERN ALASKA

This event has been reviewed by a seismologist.

Magnitude	2.6
Date-Time	Wednesday, December 28, 2011 at 17:50:12 UTC Wednesday, December 28, 2011 at 08:50:12 AM at epicenter Time of Earthquake in other Time Zones
Location	60.185°N, 152.719°W
Depth	105.4 km (65.5 miles)
Region	SOUTHERN ALASKA
Distances	61 km (38 miles) WNW (296°) from Happy Valley, AK 69 km (43 miles) WNW (289°) from Ninilchik, AK 70 km (43 miles) NW (311°) from Anchor Point, AK 196 km (122 miles) SW (236°) from Anchorage, AK
Location Uncertainty	horizontal +/- 0.7 km (0.4 miles); depth +/- 0.1 km (0.1 miles)
Parameters	NST= 40, Nph= 46, Dmin=23.6 km, Rmss=0.64 sec, Gp=108°, M-type=local magnitude (ML), Version=2
Source	Alaska Earthquake Information Center Geophysical Institute, University of Alaska Fairbanks
Event ID	ak10381334

Magnitude 5.4 - HALMAHERA, INDONESIA

This event has been reviewed by a seismologist.

Magnitude	5.4
Date-Time	Wednesday, December 28, 2011 at 17:33:55 UTC Thursday, December 29, 2011 at 02:33:55 AM at epicenter Time of Earthquake in other Time Zones
Location	1.666°N, 127.515°E
Depth	159.7 km (99.2 miles)
Region	HALMAHERA, INDONESIA
Distances	99 km (61 miles) N of Ternate, Moluccas, Indonesia 298 km (185 miles) E of Manado, Sulawesi, Indonesia 996 km (618 miles) SW of KOROR, Palau 1601 km (994 miles) SSE of MANILA, Philippines
Location Uncertainty	horizontal +/- 15.5 km (9.6 miles); depth +/- 7.7 km (4.8 miles)
Parameters	NST=134, Nph=141, Dmin=606.7 km, Rmss=0.89 sec, Gp= 32°, M-type=body wave magnitude (Mb), Version=5
Source	Magnitude: USGS NEIC (WDCS-D) Location: USGS NEIC (WDCS-D)
Event ID	usc0007dsh

Magnitude 4.6 - MINDANAO, PHILIPPINES

This event has been reviewed by a seismologist.

Magnitude	4.6
Date-Time	Wednesday, December 28, 2011 at 16:27:39 UTC Thursday, December 29, 2011 at 12:27:39 AM at epicenter Time of Earthquake in other Time Zones
Location	7.481°N, 126.541°E
Depth	87.6 km (54.4 miles)
Region	MINDANAO, PHILIPPINES
Distances	101 km (62 miles) SSE of Hinatuan, Mindanao, Philippines 111 km (68 miles) ENE of Davao, Mindanao, Philippines 196 km (121 miles) SE of Butuan, Mindanao, Philippines 995 km (618 miles) SE of MANILA, Philippines
Location Uncertainty	horizontal +/- 11.1 km (6.9 miles); depth +/- 13.8 km (8.6 miles)
Parameters	NST= 34, Nph= 34, Dmin=115.6 km, Rmss=0.8 sec, Gp=112°, M-type=body wave magnitude (Mb), Version=6
Source	USGS NEIC (WDCS-D)
Event ID	us2011vaa3

Magnitude 3.0 - NORTHERN ALASKA

Earthquake Details

This is a computer-generated message -- this event has not yet been reviewed by a seismologist.

Magnitude	3.0
Date-Time	Wednesday, December 28, 2011 at 15:49:28 UTC Wednesday, December 28, 2011 at 06:49:28 AM at epicenter Time of Earthquake in other Time Zones
Location	66.833°N, 154.950°W
Depth	11.1 km (6.9 miles)
Region	NORTHERN ALASKA
Distances	86 km (53 miles) E (95°) from Kobuk, AK 93 km (58 miles) NNW (341°) from Hughes, AK 96 km (60 miles) E (93°) from Shungnak, AK 396 km (246 miles) NW (307°) from Fairbanks, AK
Location Uncertainty	horizontal +/- 5.5 km (3.4 miles); depth +/- 0.9 km (0.6 miles)
Parameters	NST= 12, Nph= 12, Dmin=108.5 km, Rmss=0.67 sec, Gp=284°, M-type=local magnitude (ML), Version=1
Source	Alaska Earthquake Information Center Geophysical Institute, University of Alaska Fairbanks
Event ID	ak10381295

Magnitude 4.6 - SOUTHWESTERN SIBERIA, RUSSIA

This event has been reviewed by a seismologist.

Magnitude	4.6
Date-Time	Wednesday, December 28, 2011 at 15:25:42 UTC Wednesday, December 28, 2011 at 10:25:42 PM at epicenter Time of Earthquake in other Time Zones
Location	51.709°N, 96.005°E
Depth	15.5 km (9.6 miles) (poorly constrained)
Region	SOUTHWESTERN SIBERIA, RUSSIA
Distances	107 km (66 miles) E of Kyzyl, Russia 337 km (209 miles) NE of Ulaangom, Mongolia 381 km (236 miles) SE of Abakan, Russia 3764 km (2338 miles) ENE of MOSCOW, Russia
Location Uncertainty	horizontal +/- 14.2 km (8.8 miles); depth +/- 32.4 km (20.1 miles)
Parameters	NST= 27, Nph= 27, Dmin=529 km, Rmss=1.02 sec, Gp=101°, M-type=body wave magnitude (Mb), Version=7
Source	USGS NEIC (WDCS-D)
Event ID	us2011vaax

Magnitude 2.8 - KODIAK ISLAND REGION, ALASKA

This event has been reviewed by a seismologist.

Magnitude	2.8
Date-Time	Wednesday, December 28, 2011 at 14:53:36 UTC Wednesday, December 28, 2011 at 05:53:36 AM at epicenter Time of Earthquake in other Time Zones
Location	56.380°N, 152.690°W
Depth	11.7 km (7.3 miles)
Region	KODIAK ISLAND REGION, ALASKA
Distances	98 km (61 miles) SSE (157°) from Old Harbor, AK 110 km (68 miles) SE (124°) from Akhiok, AK 140 km (87 miles) SSW (192°) from Chiniak, AK 561 km (349 miles) SSW (199°) from Anchorage, AK
Location Uncertainty	horizontal +/- 24 km (14.9 miles); depth +/- 8.1 km (5.0 miles)
Parameters	NST= 20, Nph= 24, Dmin=100.5 km, Rmss=1.06 sec, Gp=281°, M-type=local magnitude (ML), Version=2
Source	Alaska Earthquake Information Center Geophysical Institute, University of Alaska Fairbanks
Event ID	ak10381277

Magnitude 4.7 - SOUTHWEST OF SUMATRA, INDONESIA

This event has been reviewed by a seismologist.

Magnitude	4.7
Date-Time	Wednesday, December 28, 2011 at 14:23:50 UTC Wednesday, December 28, 2011 at 09:23:50 PM at epicenter Time of Earthquake in other Time Zones
Location	6.372°S, 103.685°E
Depth	17.9 km (11.1 miles) (poorly constrained)
Region	SOUTHWEST OF SUMATRA, INDONESIA
Distances	202 km (125 miles) WSW of T.-Telukbetung, Sumatra, Indonesia 264 km (164 miles) W of Cilegon, Java, Indonesia 325 km (201 miles) SSE of Bengkulu, Sumatra, Indonesia 348 km (216 miles) W of JAKARTA, Java, Indonesia
Location Uncertainty	horizontal +/- 15.4 km (9.6 miles); depth +/- 34.6 km (21.5 miles)
Parameters	NST= 38, Nph= 38, Dmin=474.8 km, Rmss=0.9 sec, Gp=184°, M-type=body wave magnitude (Mb), Version=5
Source	USGS NEIC (WDCS-D)
Event ID	us2011vaaw

Magnitude 4.6 - SOUTHWESTERN SIBERIA, RUSSIA

This event has been reviewed by a seismologist.

Magnitude	4.6
Date-Time	Wednesday, December 28, 2011 at 13:54:34 UTC Wednesday, December 28, 2011 at 08:54:34 PM at epicenter Time of Earthquake in other Time Zones
Location	51.773°N, 96.374°E
Depth	10 km (6.2 miles) set by location program
Region	SOUTHWESTERN SIBERIA, RUSSIA
Distances	132 km (82 miles) E of Kyzyl, Russia 362 km (224 miles) NE of Ulaangom, Mongolia 397 km (246 miles) ESE of Abakan, Russia 3782 km (2350 miles) ENE of MOSCOW, Russia
Location Uncertainty	horizontal +/- 25.4 km (15.8 miles); depth fixed by location program
Parameters	NST= 15, Nph= 15, Dmin=503.2 km, Rmss=1.34 sec, Gp=158°, M-type=body wave magnitude (Mb), Version=6
Source	USGS NEIC (WDCS-D)
Event ID	us2011vaav

Magnitude 2.8 - PUERTO RICO REGION

This event has been reviewed by a seismologist.

Magnitude	2.8
Date-Time	Wednesday, December 28, 2011 at 13:13:03 UTC Wednesday, December 28, 2011 at 09:13:03 AM at epicenter Time of Earthquake in other Time Zones
Location	19.209°N, 65.299°W
Depth	101.5 km (63.1 miles)
Region	PUERTO RICO REGION
Distances	100 km (62 miles) N (0°) from Culebra, PR 103 km (64 miles) NNE (25°) from Luquillo, PR 103 km (64 miles) NNE (27°) from Playa Fortuna, PR 103 km (64 miles) NNW (338°) from CHARLOTTE AMALIE, US Virgin Islands 114 km (71 miles) NE (38°) from Carolina, PR
Location Uncertainty	horizontal +/- 10.1 km (6.3 miles); depth +/- 10.8 km (6.7 miles)
Parameters	NST= 4, Nph= 4, Dmin=99.8 km, Rmss=0.36 sec, Gp=266°, M-type=duration magnitude (Md), Version=0
Source	Puerto Rico Seismic Network, University of Puerto Rico
Event ID	pr11362003

Magnitude 2.5 - NEW MEXICO

This event has been reviewed by a seismologist.

Magnitude	2.5
Date-Time	Wednesday, December 28, 2011 at 11:05:10 UTC Wednesday, December 28, 2011 at 04:05:10 AM at epicenter Time of Earthquake in other Time Zones
Location	36.978°N, 104.817°W
Depth	5 km (3.1 miles)
Region	NEW MEXICO
Distances	34 km (21 miles) WNW of Raton, New Mexico 35 km (21 miles) SW of Trinidad, Colorado 71 km (44 miles) S of Walsenburg, Colorado 176 km (109 miles) NE of SANTA FE, New Mexico
Location Uncertainty	horizontal +/- 11.9 km (7.4 miles); depth +/- 3.1 km (1.9 miles)
Parameters	NST= 8, Nph= 12, Dmin=40.1 km, Rmss=0.57 sec, Gp= 86°, M-type=local magnitude (ML), Version=8
Source	Magnitude: USGS NEIC (WDCS-D) Location: USGS NEIC (WDCS-D)
Event ID	usc0007dpd

Magnitude 4.4 - NEW BRITAIN REGION, PAPUA NEW GUINEA

This event has been reviewed by a seismologist.

Magnitude	4.4
Date-Time	Wednesday, December 28, 2011 at 10:35:37 UTC Wednesday, December 28, 2011 at 08:35:37 PM at epicenter Time of Earthquake in other Time Zones
Location	6.062°S, 151.053°E
Depth	35 km (21.7 miles)
Region	NEW BRITAIN REGION, PAPUA NEW GUINEA
Distances	114 km (70 miles) ESE of Kimbe, New Britain, PNG 166 km (103 miles) E of Kandrian, New Britain, PNG 568 km (352 miles) NE of PORT MORESBY, Papua New Guinea 2382 km (1480 miles) N of BRISBANE, Queensland, Australia
Location Uncertainty	horizontal +/- 18.8 km (11.7 miles); depth +/- 3 km (1.9 miles)
Parameters	NST= 18, Nph= 19, Dmin=240.5 km, Rmss=0.4 sec, Gp=108°, M-type=body wave magnitude (Mb), Version=4
Source	Magnitude: USGS NEIC (WDCS-D) Location: USGS NEIC (WDCS-D)
Event ID	usc0007dp4

Earthquakes Hazards Learn Prepare Monitoring Research Magnitude 3.0 - PUERTO RICO REGION

This event has been reviewed by a seismologist.

Magnitude	3.0
Date-Time	Wednesday, December 28, 2011 at 10:07:05 UTC Wednesday, December 28, 2011 at 06:07:05 AM at epicenter Time of Earthquake in other Time Zones
Location	19.246°N, 66.397°W
Depth	17.3 km (10.8 miles)
Region	PUERTO RICO REGION
Distances	86 km (54 miles) N (356°) from Breñas, PR 87 km (54 miles) N (357°) from Sabana, PR 88 km (54 miles) N (6°) from Tierras Nuevas Poniente, PR 89 km (56 miles) NNW (342°) from SAN JUAN, Puerto Rico
Location Uncertainty	horizontal +/- 1.2 km (0.7 miles); depth +/- 2.7 km (1.7 miles)
Parameters	NST= 13, Nph= 13, Dmin=82.1 km, Rmss=0.15 sec, Gp=248°, M-type=duration magnitude (Md), Version=0
Source	Puerto Rico Seismic Network, University of Puerto Rico
Event ID	pr11362001

Magnitude 4.7 - KURIL ISLANDS

This event has been reviewed by a seismologist.

Magnitude	4.7
Date-Time	Wednesday, December 28, 2011 at 09:18:32 UTC Wednesday, December 28, 2011 at 08:18:32 PM at epicenter Time of Earthquake in other Time Zones
Location	43.741°N, 147.023°E
Depth	62 km (38.5 miles)
Region	KURIL ISLANDS
Distances	179 km (111 miles) SSW of Kuril'sk, Kuril Islands 229 km (142 miles) ENE of Kushiro, Hokkaido, Japan 322 km (200 miles) ENE of Obihiro, Hokkaido, Japan 1089 km (676 miles) NNE of TOKYO, Japan
Location Uncertainty	horizontal +/- 24 km (14.9 miles); depth +/- 8.3 km (5.2 miles)
Parameters	NST= 54, Nph= 56, Dmin=358.4 km, Rmss=0.58 sec, Gp=155°, M-type=body wave magnitude (Mb), Version=6
Source	Magnitude: USGS NEIC (WDCS-D) Location: USGS NEIC (WDCS-D)
Event ID	usc0007dns

Magnitude 2.5 - VIRGIN ISLANDS REGION

This event has been reviewed by a seismologist.

Magnitude	2.5
Date-Time	Wednesday, December 28, 2011 at 08:28:35 UTC Wednesday, December 28, 2011 at 04:28:35 AM at epicenter Time of Earthquake in other Time Zones
Location	19.091°N, 64.521°W
Depth	25.6 km (15.9 miles)
Region	VIRGIN ISLANDS REGION
Distances	45 km (28 miles) NNW (332°) from Settlement, Anegada, British Virgin Islands 70 km (44 miles) N (4°) from East End-Long Look, Tortola, British Virgin Islands 72 km (45 miles) N (353°) from Spanish Town, Virgin Gorda, British Virgin Islands 72 km (45 miles) N (8°) from ROAD TOWN, British Virgin Islands 171 km (106 miles) ENE (63°) from Carolina, PR
Location Uncertainty	horizontal +/- 2.7 km (1.7 miles); depth +/- 9 km (5.6 miles)
Parameters	NST= 3, Nph= 3, Dmin=44.7 km, Rmss=0.05 sec, Gp=288°, M-type=duration magnitude (Md), Version=0
Source	Puerto Rico Seismic Network, University of Puerto Rico
Event ID	pr11362002

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