THE S WAVE PROJECT FOR FOCAL MECHANISM STUDIES. THE ALASKA EARTHQUAKE SEQUENCE OF 1964.
The polarity of the P wave first motion in the main shock yields a single well determined nodal plane with strike N66 degrees E, dip 85 degrees to the southeast. The focal mechanism of the earthquakes related to the main shock bear a remarkable similarity to one another and to the main shock. In all...
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ftdtic:AD0639386 2023-05-15T17:04:39+02:00 THE S WAVE PROJECT FOR FOCAL MECHANISM STUDIES. THE ALASKA EARTHQUAKE SEQUENCE OF 1964. Stauder,William bollinger,G. A. SAINT LOUIS UNIV MO INST OF TECH 1966-07-31 text/html http://www.dtic.mil/docs/citations/AD0639386 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0639386 en eng http://www.dtic.mil/docs/citations/AD0639386 APPROVED FOR PUBLIC RELEASE DTIC AND NTIS Seismology (*EARTHQUAKES ALASKA) SEISMIC WAVES Text 1966 ftdtic 2016-02-18T19:28:31Z The polarity of the P wave first motion in the main shock yields a single well determined nodal plane with strike N66 degrees E, dip 85 degrees to the southeast. The focal mechanism of the earthquakes related to the main shock bear a remarkable similarity to one another and to the main shock. In all but three cases there is a single steeply dipping nodal plane of P. For earthquakes in the Kodiak Island region this plane has the same orientation as that of the main shock. For earthquakes to the east of Prince William Sound the near vertical nodal plane P shows a systematic change in orientation corresponding to the change in trend of the tectonic features. For all of these shocks excellent S wave data permit the determination of the second nodal plane, indeterminant from the P wave data. It is found to have a dip of about 10 degrees to the northwest or north. By inference, the second nodal plane of the main shock has the same orientation. (Author) Text Kodiak Alaska Defense Technical Information Center: DTIC Technical Reports database |
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Open Polar |
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Defense Technical Information Center: DTIC Technical Reports database |
op_collection_id |
ftdtic |
language |
English |
topic |
Seismology (*EARTHQUAKES ALASKA) SEISMIC WAVES |
spellingShingle |
Seismology (*EARTHQUAKES ALASKA) SEISMIC WAVES Stauder,William bollinger,G. A. THE S WAVE PROJECT FOR FOCAL MECHANISM STUDIES. THE ALASKA EARTHQUAKE SEQUENCE OF 1964. |
topic_facet |
Seismology (*EARTHQUAKES ALASKA) SEISMIC WAVES |
description |
The polarity of the P wave first motion in the main shock yields a single well determined nodal plane with strike N66 degrees E, dip 85 degrees to the southeast. The focal mechanism of the earthquakes related to the main shock bear a remarkable similarity to one another and to the main shock. In all but three cases there is a single steeply dipping nodal plane of P. For earthquakes in the Kodiak Island region this plane has the same orientation as that of the main shock. For earthquakes to the east of Prince William Sound the near vertical nodal plane P shows a systematic change in orientation corresponding to the change in trend of the tectonic features. For all of these shocks excellent S wave data permit the determination of the second nodal plane, indeterminant from the P wave data. It is found to have a dip of about 10 degrees to the northwest or north. By inference, the second nodal plane of the main shock has the same orientation. (Author) |
author2 |
SAINT LOUIS UNIV MO INST OF TECH |
format |
Text |
author |
Stauder,William bollinger,G. A. |
author_facet |
Stauder,William bollinger,G. A. |
author_sort |
Stauder,William |
title |
THE S WAVE PROJECT FOR FOCAL MECHANISM STUDIES. THE ALASKA EARTHQUAKE SEQUENCE OF 1964. |
title_short |
THE S WAVE PROJECT FOR FOCAL MECHANISM STUDIES. THE ALASKA EARTHQUAKE SEQUENCE OF 1964. |
title_full |
THE S WAVE PROJECT FOR FOCAL MECHANISM STUDIES. THE ALASKA EARTHQUAKE SEQUENCE OF 1964. |
title_fullStr |
THE S WAVE PROJECT FOR FOCAL MECHANISM STUDIES. THE ALASKA EARTHQUAKE SEQUENCE OF 1964. |
title_full_unstemmed |
THE S WAVE PROJECT FOR FOCAL MECHANISM STUDIES. THE ALASKA EARTHQUAKE SEQUENCE OF 1964. |
title_sort |
s wave project for focal mechanism studies. the alaska earthquake sequence of 1964. |
publishDate |
1966 |
url |
http://www.dtic.mil/docs/citations/AD0639386 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=AD0639386 |
genre |
Kodiak Alaska |
genre_facet |
Kodiak Alaska |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/AD0639386 |
op_rights |
APPROVED FOR PUBLIC RELEASE |
_version_ |
1766058974134665216 |