Swarm of strong and shallow earthquakes struck Santa Cruz Islands region, starting with January 30, 2013. Strong M 6.0 (USGS) hit island region on January 30, 2013 at 23:03 UTC.
The strongest earthquake was measured as M 6.2 on January 31, 2013 at 03:33 UTC, (four hours after M 6.0) with epicenter located 60 km (37 miles) E of Lata, Solomon Islands at depth of 9.2 km (5.7 miles). There was no tsunami alert issued.
|Depth||9.2 km (5.7 miles)|
|Region||SANTA CRUZ ISLANDS|
|Distances||60 km (37 miles) E of Lata, Solomon Islands
544 km (338 miles) N of Luganville, Vanuatu
717 km (445 miles) ESE of Honiara, Solomon Islands
809 km (502 miles) NNW of Port-Vila, Vanuatu
|Location Uncertainty||horizontal +/- 14.7 km (9.1 miles); depth +/- 3.2 km (2.0 miles)|
|Parameters||NST=414, Nph=420, Dmin=718 km, Rmss=0.82 sec, Gp= 25°,
M-type=regional moment magnitude (Mw), Version=9
By the time of this report (January 31, 2013 - 08:40 UTC), Santa Cruz Islands experienced nine strong earthquakes ranging between M 4.6 and M 5.6. The Santa Cruz Islands are less than five million years old, and were pushed upward by the tectonic subduction of the northward-moving Indo-Australian Plate under the Pacific Plate. The islands are mostly composed of limestone and volcanic ash over limestone.
World earthquakes listUpdate time = Thursday, January 31, 2013 at 9:37 UTC
|4.3||2013/01/31 08:27:29||-7.271||144.084||33.3||NEAR SOUTH COAST OF NEW GUINEA, P.N.G.|
|2.9||2013/01/31 08:06:34||33.392||-116.847||6.7||SOUTHERN CALIFORNIA|
|4.9||2013/01/31 06:50:17||-10.418||166.251||35.0||SANTA CRUZ ISLANDS|
|5.1||2013/01/31 06:42:11||-10.713||166.386||35.2||SANTA CRUZ ISLANDS|
|5.4||2013/01/31 05:18:15||-10.567||166.446||45.7||SANTA CRUZ ISLANDS|
|5.0||2013/01/31 05:16:58||-10.502||166.201||25.0||SANTA CRUZ ISLANDS|
|4.6||2013/01/31 05:10:53||-28.053||-70.927||46.1||ATACAMA, CHILE|
|2.6||2013/01/31 04:35:05||60.183||-151.274||60.7||KENAI PENINSULA, ALASKA|
|5.6||2013/01/31 04:31:33||-10.934||165.418||32.9||SANTA CRUZ ISLANDS|
|4.5||2013/01/31 04:15:56||-27.878||-70.941||26.8||ATACAMA, CHILE|
|5.0||2013/01/31 04:10:46||-4.613||102.515||51.7||SOUTHERN SUMATRA, INDONESIA|
|2.6||2013/01/31 04:01:13||46.285||-122.208||5.0||MOUNT ST. HELENS AREA, WASHINGTON|
|5.6||2013/01/31 03:58:00||-10.680||166.391||35.1||SANTA CRUZ ISLANDS|
|6.2||2013/01/31 03:33:44||-10.628||166.382||9.2||SANTA CRUZ ISLANDS|
|4.8||2013/01/31 02:45:00||-28.504||-67.365||117.7||LA RIOJA, ARGENTINA|
|4.3||2013/01/31 02:26:21||49.877||150.751||355.5||NORTHWEST OF THE KURIL ISLANDS|
|2.7||2013/01/31 01:48:18||60.371||-152.835||119.7||SOUTHERN ALASKA|
|2.9||2013/01/31 01:12:08||18.890||-64.453||38.0||VIRGIN ISLANDS REGION|
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