Magnitude 7.6 SCOTIA SEA
2003 August 04 04:37:20 UTC
Preliminary Earthquake Report
U.S. Geological Survey, National Earthquake Information Center
World Data Center for Seismology, Denver
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Magnitude | 7.6 | |
| Date-Time |
Monday, August 04, 2003 at 04:37:20 (UTC) - Coordinated Universal Time Monday, August 04, 2003 at 01:37:20 AM local time at epicenter Time of Earthquake in other Time Zones |
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| Location | 60.56S 43.49W | ||
| Depth | 10.0 kilometers | ||
| Region | SCOTIA SEA | ||
| Reference |
190 km (120 miles) E of Coronation Island, South Orkney Islands 810 km (510 miles) SSW of Grytviken, South Georgia 3075 km (1910 miles) SSE of BUENOS AIRES, Argentina |
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| Location Quality | Error estimate: horizontal +/- 11.7 km; depth fixed by location program | ||
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Location Quality Parameters |
Nst=25, Nph=25, Dmin=1147.9 km, Rmss=0.72 sec, Erho=11.7 km, Erzz=0 km, Gp=71.7 degrees | ||
| Source | USGS NEIC (WDCS-D) |
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The August 4, 2003, Scotia Sea earthquake occurred on the boundary between the Scotia plate and the
Antarctic plate. In the epicentral region, the Scotia Sea plate is moving to the west-northwest with respect to the
Antarctic plate. The relative velocity between the two plates is not well determined but is likely to be about 1
cm/y. The overall boundary is a transform-fault boundary, involving predominantly strike-slip faulting, although
prior normal-faulting earthquakes have also occurred.
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Did You Feel It?
Theoretical P-Wave Travel Times Historical Moment Tensor Solutions Earthquakes in 2003, Magnitude 7 and Greater Earthquakes: Frequently Asked Questions
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NB:
The region name is an automatically generated name
from the Flinn-Engdahl (F-E) seismic and geographical regionalization scheme.
The boundaries of
these regions are defined at one-degree intervals and therefore differ from
irregular political boundaries.
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