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.

 

Magnitude 6.2
Date-Time
  • Thursday, January 31, 2013 at 03:33:43 UTC
  • Thursday, January 31, 2013 at 02:33:43 PM at epicenter
Location 10.628°S, 166.382°E
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
Source
  • Magnitude: USGS NEIC (WDCS-D)
    Location: USGS NEIC (WDCS-D)
Event ID usc000ez0w
 
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

 
MAG UTC DATE-TIME
y/m/d h:m:s
LAT
deg
LON
deg
DEPTH
km
 Region
 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
 3.7 2013/01/31 01:03:17   45.919  -122.409 7.6  WASHINGTON
 

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