Publication Date:
2007-12-01
Description:
We studied regional Formula at 1 Hz (Formula) around the Korean Peninsula based on broadband vertical component seismic records of six Incorporated Research Institutions for Seismology (IRIS) Global Seismographic Network stations and 19 Korean stations of the Korea Institute of Geoscience and Mineral Resources (KIGAM). Using 177 seismic events with magnitudes between 5.3 and 5.7 and depths less than 50 km, the reversed two station method was applied, and 94 high quality interstation paths were selected from 869 possible pairs. These results show high Formula paths around the Sea of Japan (East Sea) reflecting the typical oceanic structure and low Formula paths around northeastern China related to inactive seismicity. Assigning these path values into 193 cells around South Korea with a size of 1 degrees by 1 degrees , we observed that the regional Formula decreased gradually from east to west between 2 and 1X10 (super -3) .
Print ISSN:
0037-1106
Electronic ISSN:
1943-3573
Topics:
Geosciences
,
Physics
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