Earthquake swarms on the Mid-Atlantic Ridge - Products of magmatism or extensional tectonics?
The spatial and temporal patterns and other characteristics of earthquakes in 34 earthquake swarms on the Mid-Atlantic Ridge were compared with those of well-studied earthquake swarms which accompany terrestrial volcanic eruptions, to test the assumption that the teleseismically observed earthquake...
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ftnasantrs:oai:casi.ntrs.nasa.gov:19900043893 2023-05-15T16:49:58+02:00 Earthquake swarms on the Mid-Atlantic Ridge - Products of magmatism or extensional tectonics? Bergman, Eric A. Solomon, Sean C. Unclassified, Unlimited, Publicly available Apr 10, 1990 http://ntrs.nasa.gov/search.jsp?R=19900043893 unknown http://ntrs.nasa.gov/search.jsp?R=19900043893 Accession ID: 90A30948 Copyright Other Sources 46 Journal of Geophysical Research; 95; 4943-496 1990 ftnasantrs 2012-02-15T18:29:10Z The spatial and temporal patterns and other characteristics of earthquakes in 34 earthquake swarms on the Mid-Atlantic Ridge were compared with those of well-studied earthquake swarms which accompany terrestrial volcanic eruptions, to test the assumption that the teleseismically observed earthquake swarms along mid-ocean ridges are indicators of volcanism. Improved resolution of these patterns for the mid-ocean ridge events was achieved by a multiple-event relocation technique. It was found that the teleseismically located earthquake swarms on the mid-ocean ridge system have few features in common with swarms directly associated with active magmatism in terrestrial volcanic rift zones such as Hawaii and Iceland. While the possibility that some of the mid-ocean earthquake swarms might be directly associated with a current episode of eruptive activity on the Mid-Atlantic Ridge cannot be excluded, none of the 34 swarms studied in this work was found to be a conspicuously attractive candidate for such a role. Other/Unknown Material Iceland NASA Technical Reports Server (NTRS) Mid-Atlantic Ridge |
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NASA Technical Reports Server (NTRS) |
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46 Bergman, Eric A. Solomon, Sean C. Earthquake swarms on the Mid-Atlantic Ridge - Products of magmatism or extensional tectonics? |
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46 |
description |
The spatial and temporal patterns and other characteristics of earthquakes in 34 earthquake swarms on the Mid-Atlantic Ridge were compared with those of well-studied earthquake swarms which accompany terrestrial volcanic eruptions, to test the assumption that the teleseismically observed earthquake swarms along mid-ocean ridges are indicators of volcanism. Improved resolution of these patterns for the mid-ocean ridge events was achieved by a multiple-event relocation technique. It was found that the teleseismically located earthquake swarms on the mid-ocean ridge system have few features in common with swarms directly associated with active magmatism in terrestrial volcanic rift zones such as Hawaii and Iceland. While the possibility that some of the mid-ocean earthquake swarms might be directly associated with a current episode of eruptive activity on the Mid-Atlantic Ridge cannot be excluded, none of the 34 swarms studied in this work was found to be a conspicuously attractive candidate for such a role. |
format |
Other/Unknown Material |
author |
Bergman, Eric A. Solomon, Sean C. |
author_facet |
Bergman, Eric A. Solomon, Sean C. |
author_sort |
Bergman, Eric A. |
title |
Earthquake swarms on the Mid-Atlantic Ridge - Products of magmatism or extensional tectonics? |
title_short |
Earthquake swarms on the Mid-Atlantic Ridge - Products of magmatism or extensional tectonics? |
title_full |
Earthquake swarms on the Mid-Atlantic Ridge - Products of magmatism or extensional tectonics? |
title_fullStr |
Earthquake swarms on the Mid-Atlantic Ridge - Products of magmatism or extensional tectonics? |
title_full_unstemmed |
Earthquake swarms on the Mid-Atlantic Ridge - Products of magmatism or extensional tectonics? |
title_sort |
earthquake swarms on the mid-atlantic ridge - products of magmatism or extensional tectonics? |
publishDate |
1990 |
url |
http://ntrs.nasa.gov/search.jsp?R=19900043893 |
op_coverage |
Unclassified, Unlimited, Publicly available |
geographic |
Mid-Atlantic Ridge |
geographic_facet |
Mid-Atlantic Ridge |
genre |
Iceland |
genre_facet |
Iceland |
op_source |
Other Sources |
op_relation |
http://ntrs.nasa.gov/search.jsp?R=19900043893 Accession ID: 90A30948 |
op_rights |
Copyright |
_version_ |
1766040141924663296 |