SEISMICITY AROUND THE ANTARCTIC PENINSULA

Seismic activity in the vicinity of the South Shetland Islands, at the north tip of the Antarctic Peninsula, is very high compared with other regions of the Antarctic. A study of International Seismological Center data between 45°-70°W and 55°-72°S, covering the 1970-1990 time period, verifies this...

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Bibliographic Details
Main Authors: カミヌマ カツタダ, Katsutada KAMINUMA
Format: Report
Language:English
Published: National Institute of Polar Research 1995
Subjects:
Antarctic
The Antarctic
Antarctic Peninsula
South Shetland Islands
Shackleton
South Scotia Ridge
Shackleton Fracture Zone
South Shetland Trench
Bridgeman
Hero Fracture Zone
Antarc*
Online Access:https://nipr.repo.nii.ac.jp/?action=repository_uri&item_id=2783
http://id.nii.ac.jp/1291/00002783/
https://nipr.repo.nii.ac.jp/?action=repository_action_common_download&item_id=2783&item_no=1&attribute_id=18&file_no=1
Description
Summary:Seismic activity in the vicinity of the South Shetland Islands, at the north tip of the Antarctic Peninsula, is very high compared with other regions of the Antarctic. A study of International Seismological Center data between 45°-70°W and 55°-72°S, covering the 1970-1990 time period, verifies this conclusion. Earthquakes are located along the South Scotia Ridge, the Shackleton Fracture Zone, the Hero Fracture Zone and the South Shetland Islands. The earthquakes in the South Shetland Islands are concentrated on Deception and Bridgeman Islands, both volcanic Islands on either side of the Bransfield Rift. No seismic evidence is recognized along the Bransfield Rift, and very little along the South Shetland Trench. It can be concluded that neither subduction nor rifting is active in this region at present.

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