Saturday, December 31, 2011

Magnitude 7.0 - IZU ISLANDS, JAPAN REGION


Earthquake Details

  • This event has been reviewed by a seismologist.
Magnitude7.0 (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
Location31.400°N, 138.600°E
Depth371 km (230.5 miles) set by location program
RegionIZU 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 UncertaintyError estimate not available
ParametersNST= 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
Event IDpt12001000

Thursday, December 29, 2011

Magnitude 5.1 - TONGA

  • This event has been reviewed by a seismologist.
Magnitude5.1
Date-Time
Location17.709°S, 174.739°W
Depth238.9 km (148.5 miles)
RegionTONGA
Distances131 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 Uncertaintyhorizontal +/- 32.8 km (20.4 miles); depth +/- 20.5 km (12.7 miles)
ParametersNST= 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 IDusc0007e09

Magnitude 4.4 - OAXACA, MEXICO

  • This event has been reviewed by a seismologist.
Magnitude4.4
Date-Time
Location16.466°N, 94.852°W
Depth64.3 km (40.0 miles)
RegionOAXACA, MEXICO
Distances50 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 Uncertaintyhorizontal +/- 18.5 km (11.5 miles); depth +/- 9.9 km (6.2 miles)
ParametersNST= 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 IDusc0007e11

Magnitude 5.4 - SOUTH SANDWICH ISLANDS REGION

  • This event has been reviewed by a seismologist.
Magnitude5.4
Date-Time
Location60.638°S, 25.914°W
Depth31 km (19.3 miles)
RegionSOUTH SANDWICH ISLANDS REGION
Distances182 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 Uncertaintyhorizontal +/- 19.3 km (12.0 miles); depth +/- 5.6 km (3.5 miles)
ParametersNST=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 IDusc0007dwy

Magnitude 2.5 - PUERTO RICO REGION

  • This event has been reviewed by a seismologist.
Magnitude2.5
Date-Time
Location18.653°N, 67.169°W
Depth72.2 km (44.9 miles)
RegionPUERTO 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 Uncertaintyhorizontal +/- 1.9 km (1.2 miles); depth +/- 2.1 km (1.3 miles)
ParametersNST= 5, Nph= 5, Dmin=53.5 km, Rmss=0.21 sec, Gp=288°,
M-type=duration magnitude (Md), Version=0
Source
Event IDpr11362004

Magnitude 2.6 - SOUTHERN ALASKA

  • This event has been reviewed by a seismologist.
Magnitude2.6
Date-Time
Location60.185°N, 152.719°W
Depth105.4 km (65.5 miles)
RegionSOUTHERN 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 Uncertaintyhorizontal +/- 0.7 km (0.4 miles); depth +/- 0.1 km (0.1 miles)
ParametersNST= 40, Nph= 46, Dmin=23.6 km, Rmss=0.64 sec, Gp=108°,
M-type=local magnitude (ML), Version=2
Source
Event IDak10381334

Magnitude 5.4 - HALMAHERA, INDONESIA

  • This event has been reviewed by a seismologist.
Magnitude5.4
Date-Time
Location 1.666°N, 127.515°E
Depth159.7 km (99.2 miles)
RegionHALMAHERA, INDONESIA
Distances99 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 Uncertaintyhorizontal +/- 15.5 km (9.6 miles); depth +/- 7.7 km (4.8 miles)
ParametersNST=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 IDusc0007dsh