Why is seismic activity low in Antarctica?
Oceanic intraplate earthquakes which occurred in the oceanic lithosphere show the following features : 1. The level of oceanic intraplate seismicity appears to increase from high latitudes to low latitudes. 2. The level of oceanic intraplate seismicity appears to increase with the absolute velocity...
Main Authors: | , |
---|---|
Format: | Article in Journal/Newspaper |
Language: | English Japanese |
Published: |
National Institute of Polar Research
1984
|
Subjects: | |
Online Access: | https://doi.org/10.15094/00008420 https://doaj.org/article/3242ef31adc54a2db112fdceeede09a6 |
id |
ftdoajarticles:oai:doaj.org/article:3242ef31adc54a2db112fdceeede09a6 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:3242ef31adc54a2db112fdceeede09a6 2023-05-15T13:41:29+02:00 Why is seismic activity low in Antarctica? Masashi Tani Ichiro Kawasaki 1984-12-01T00:00:00Z https://doi.org/10.15094/00008420 https://doaj.org/article/3242ef31adc54a2db112fdceeede09a6 EN JA eng jpn National Institute of Polar Research https://doi.org/10.15094/00008420 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00008420 0085-7289 2432-079X https://doaj.org/article/3242ef31adc54a2db112fdceeede09a6 Antarctic Record, Iss 83, Pp 29-36 (1984) Geography (General) G1-922 article 1984 ftdoajarticles https://doi.org/10.15094/00008420 2022-12-31T03:36:05Z Oceanic intraplate earthquakes which occurred in the oceanic lithosphere show the following features : 1. The level of oceanic intraplate seismicity appears to increase from high latitudes to low latitudes. 2. The level of oceanic intraplate seismicity appears to increase with the absolute velocity of the movement of the oceanic plate. 3. Both the level of oceanic intraplate seismicity and the maximum seismic moment of intraplate earthquakes appear to decrease with age of the ocean floor, which can be regarded as a rough approximate of the distance from an axis of the mid-oceanic ridge. This means that the ridge push force is dissipated while guided through the oceanic lithosphere. Thus, the potential causes of low seismic activity in Antarctica can be summarized as follows : 1. Antarctica is situated in very high latitudes, 2. The absolute velocity of the movement of the Antarctic plate is small, 3. Because Antarctica is distant from the axes of the mid-oceanic ridge, the continent is almost free from the ridge push force. Article in Journal/Newspaper Antarc* Antarctic Antarctica Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Japanese |
topic |
Geography (General) G1-922 |
spellingShingle |
Geography (General) G1-922 Masashi Tani Ichiro Kawasaki Why is seismic activity low in Antarctica? |
topic_facet |
Geography (General) G1-922 |
description |
Oceanic intraplate earthquakes which occurred in the oceanic lithosphere show the following features : 1. The level of oceanic intraplate seismicity appears to increase from high latitudes to low latitudes. 2. The level of oceanic intraplate seismicity appears to increase with the absolute velocity of the movement of the oceanic plate. 3. Both the level of oceanic intraplate seismicity and the maximum seismic moment of intraplate earthquakes appear to decrease with age of the ocean floor, which can be regarded as a rough approximate of the distance from an axis of the mid-oceanic ridge. This means that the ridge push force is dissipated while guided through the oceanic lithosphere. Thus, the potential causes of low seismic activity in Antarctica can be summarized as follows : 1. Antarctica is situated in very high latitudes, 2. The absolute velocity of the movement of the Antarctic plate is small, 3. Because Antarctica is distant from the axes of the mid-oceanic ridge, the continent is almost free from the ridge push force. |
format |
Article in Journal/Newspaper |
author |
Masashi Tani Ichiro Kawasaki |
author_facet |
Masashi Tani Ichiro Kawasaki |
author_sort |
Masashi Tani |
title |
Why is seismic activity low in Antarctica? |
title_short |
Why is seismic activity low in Antarctica? |
title_full |
Why is seismic activity low in Antarctica? |
title_fullStr |
Why is seismic activity low in Antarctica? |
title_full_unstemmed |
Why is seismic activity low in Antarctica? |
title_sort |
why is seismic activity low in antarctica? |
publisher |
National Institute of Polar Research |
publishDate |
1984 |
url |
https://doi.org/10.15094/00008420 https://doaj.org/article/3242ef31adc54a2db112fdceeede09a6 |
geographic |
Antarctic The Antarctic |
geographic_facet |
Antarctic The Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Antarctic Record, Iss 83, Pp 29-36 (1984) |
op_relation |
https://doi.org/10.15094/00008420 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00008420 0085-7289 2432-079X https://doaj.org/article/3242ef31adc54a2db112fdceeede09a6 |
op_doi |
https://doi.org/10.15094/00008420 |
_version_ |
1766151294095982592 |