Swarm of strong earthquakes hit Santa Cruz Islands

Swarm of strong earthquakes hit Santa Cruz Islands

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.

 

Magnitude6.2
Date-Time
  • Thursday, January 31, 2013 at 03:33:43 UTC
  • Thursday, January 31, 2013 at 02:33:43 PM at epicenter
Location10.628°S, 166.382°E
Depth9.2 km (5.7 miles)
RegionSANTA CRUZ ISLANDS
Distances60 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 Uncertaintyhorizontal +/- 14.7 km (9.1 miles); depth +/- 3.2 km (2.0 miles)
ParametersNST=414, Nph=420, Dmin=718 km, Rmss=0.82 sec, Gp= 25°,
M-type=regional moment magnitude (Mw), Version=9
Source
  • Magnitude: USGS NEIC (WDCS-D)
    Location: USGS NEIC (WDCS-D)
Event IDusc000ez0w
 
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 list

Update time = Thursday, January 31, 2013 at 9:37 UTC
Source: USGS

 
MAGUTC DATE-TIME
y/m/d h:m:s
LAT
deg
LON
deg
DEPTH
km
 Region
 4.32013/01/31 08:27:29  -7.271  144.08433.3 NEAR SOUTH COAST OF NEW GUINEA, P.N.G.
 2.92013/01/31 08:06:34  33.392 -116.8476.7 SOUTHERN CALIFORNIA
 4.9  2013/01/31 06:50:17 -10.418  166.25135.0 SANTA CRUZ ISLANDS
 5.1  2013/01/31 06:42:11 -10.713  166.38635.2 SANTA CRUZ ISLANDS
 5.4  2013/01/31 05:18:15 -10.567  166.44645.7 SANTA CRUZ ISLANDS
 5.0  2013/01/31 05:16:58 -10.502  166.20125.0 SANTA CRUZ ISLANDS
 4.6  2013/01/31 05:10:53 -28.053  -70.92746.1 ATACAMA, CHILE
 2.62013/01/31 04:35:05  60.183 -151.27460.7 KENAI PENINSULA, ALASKA
 5.6  2013/01/31 04:31:33 -10.934  165.41832.9 SANTA CRUZ ISLANDS
 4.5  2013/01/31 04:15:56 -27.878  -70.94126.8 ATACAMA, CHILE
 5.0  2013/01/31 04:10:46  -4.613  102.51551.7 SOUTHERN SUMATRA, INDONESIA
2.62013/01/31 04:01:13  46.285 -122.2085.0 MOUNT ST. HELENS AREA, WASHINGTON
 5.6  2013/01/31 03:58:00 -10.680  166.39135.1 SANTA CRUZ ISLANDS
 6.2  2013/01/31 03:33:44 -10.628  166.3829.2 SANTA CRUZ ISLANDS
 4.8  2013/01/31 02:45:00 -28.504  -67.365117.7 LA RIOJA, ARGENTINA
 4.32013/01/31 02:26:21  49.877  150.751355.5 NORTHWEST OF THE KURIL ISLANDS
 2.72013/01/31 01:48:18  60.371 -152.835119.7 SOUTHERN ALASKA
 2.92013/01/31 01:12:08  18.890  -64.45338.0 VIRGIN ISLANDS REGION
 3.72013/01/31 01:03:17  45.919 -122.4097.6 WASHINGTON
 

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