Local earthquake activity around Syowa Station, Antarctica
The Japanese Antarctic Station, Syowa (69°S, 39°E), is located at the edge of the east Antarctic shield. Seismic observations at Syowa Station were started in 1959. Phase readings of earthquakes have been published by National Institute of Polar Research once a year since 1968, as one of the Data Re...
Main Authors: | , , |
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Format: | Report |
Language: | English |
Published: |
National Institute of Polar Research
1998
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Subjects: | |
Online Access: | https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=3015 http://id.nii.ac.jp/1291/00003015/ https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=3015&item_no=1&attribute_id=18&file_no=1 |
Summary: | The Japanese Antarctic Station, Syowa (69°S, 39°E), is located at the edge of the east Antarctic shield. Seismic observations at Syowa Station were started in 1959. Phase readings of earthquakes have been published by National Institute of Polar Research once a year since 1968, as one of the Data Report Series. Nine local earthquakes were detected empirically on short-period seismograms at Syowa Station in 1990-1996 on the basis of long term records of many different types of events. The seismicity during that period was very low compared with that in 1987-89 when local earthquake locations were determined by the tripartite seismic array. Magnitudes of the nine earthquakes ranged from 0.1 to 1.4. Locations of four earthquakes out of nine are determined by a single station method to be in the Lutzow-Holm Bay and its northeastern coast area. |
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