Release of Tectonic Strain by Large Underground Nuclear Detonation

The report describes an attempt to observe SH waves from several large underground nuclear explosions at first-zone distances (600 km) from each event. The data base was supplemented by seismograms from the World Wide Standard Station Network and Canadian Network. Good SH arrivals were observed at t...

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1. Verfasser:	Turpening, R M
Format:	Report
Sprache:	eng
Schlagworte:	BENHAM SHOT BOXCAR SHOT HANDLEY SHOT NUCLEAR EXPLOSIONS POWER SPECTRA SEISMIC WAVES Seismology SIGNAL PROCESSING STATISTICAL DATA UNDERGROUND EXPLOSIONS
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creator	Turpening, R M
description	The report describes an attempt to observe SH waves from several large underground nuclear explosions at first-zone distances (600 km) from each event. The data base was supplemented by seismograms from the World Wide Standard Station Network and Canadian Network. Good SH arrivals were observed at the shorter ranges (250 km) but not at ranges between 250 km and about 1800 km. In an effort to detect the arrival of any S waves (SV or SH) within this 'shadow zone', a flat-layered earth approximation was assumed (with hence critically refracted S-wave paths), and particle motion diagrams were then constructed. (The flat-layered earth hypothesis suggests small angles of incidence and, therefore, rectilinear particle motion). Such rectilinear motion was observed and in several 'shadow-zone' instances, arrival times were consistent with the model chosen.
format	Report
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The data base was supplemented by seismograms from the World Wide Standard Station Network and Canadian Network. Good SH arrivals were observed at the shorter ranges (250 km) but not at ranges between 250 km and about 1800 km. In an effort to detect the arrival of any S waves (SV or SH) within this 'shadow zone', a flat-layered earth approximation was assumed (with hence critically refracted S-wave paths), and particle motion diagrams were then constructed. (The flat-layered earth hypothesis suggests small angles of incidence and, therefore, rectilinear particle motion). Such rectilinear motion was observed and in several 'shadow-zone' instances, arrival times were consistent with the model chosen.</description><language>eng</language><subject>BENHAM SHOT ; BOXCAR SHOT ; HANDLEY SHOT ; NUCLEAR EXPLOSIONS ; POWER SPECTRA ; SEISMIC WAVES ; Seismology ; SIGNAL PROCESSING ; STATISTICAL DATA ; UNDERGROUND EXPLOSIONS</subject><creationdate>1973</creationdate><rights>Approved for public release; distribution is unlimited.</rights><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>230,778,883,27554,27555</link.rule.ids><linktorsrc>$$Uhttps://apps.dtic.mil/sti/citations/AD0755883$$EView_record_in_DTIC$$FView_record_in_$$GDTIC$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>Turpening, R M</creatorcontrib><creatorcontrib>MICHIGAN UNIV ANN ARBOR INST OF SCIENCE AND TECHNOLOGY</creatorcontrib><title>Release of Tectonic Strain by Large Underground Nuclear Detonation</title><description>The report describes an attempt to observe SH waves from several large underground nuclear explosions at first-zone distances (600 km) from each event. The data base was supplemented by seismograms from the World Wide Standard Station Network and Canadian Network. Good SH arrivals were observed at the shorter ranges (250 km) but not at ranges between 250 km and about 1800 km. In an effort to detect the arrival of any S waves (SV or SH) within this 'shadow zone', a flat-layered earth approximation was assumed (with hence critically refracted S-wave paths), and particle motion diagrams were then constructed. (The flat-layered earth hypothesis suggests small angles of incidence and, therefore, rectilinear particle motion). Such rectilinear motion was observed and in several 'shadow-zone' instances, arrival times were consistent with the model chosen.</description><subject>BENHAM SHOT</subject><subject>BOXCAR SHOT</subject><subject>HANDLEY SHOT</subject><subject>NUCLEAR EXPLOSIONS</subject><subject>POWER SPECTRA</subject><subject>SEISMIC WAVES</subject><subject>Seismology</subject><subject>SIGNAL PROCESSING</subject><subject>STATISTICAL DATA</subject><subject>UNDERGROUND EXPLOSIONS</subject><fulltext>true</fulltext><rsrctype>report</rsrctype><creationdate>1973</creationdate><recordtype>report</recordtype><sourceid>1RU</sourceid><recordid>eNrjZHAKSs1JTSxOVchPUwhJTS7Jz8tMVgguKUrMzFNIqlTwSSxKT1UIzUtJLUovyi_NS1HwK00GaihScEkFqk0syczP42FgTUvMKU7lhdLcDDJuriHOHropJZnJ8cUlmXmpJfGOLgbmpqYWFsbGBKQBEfcuvQ</recordid><startdate>197301</startdate><enddate>197301</enddate><creator>Turpening, R M</creator><scope>1RU</scope><scope>BHM</scope></search><sort><creationdate>197301</creationdate><title>Release of Tectonic Strain by Large Underground Nuclear Detonation</title><author>Turpening, R M</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-dtic_stinet_AD07558833</frbrgroupid><rsrctype>reports</rsrctype><prefilter>reports</prefilter><language>eng</language><creationdate>1973</creationdate><topic>BENHAM SHOT</topic><topic>BOXCAR SHOT</topic><topic>HANDLEY SHOT</topic><topic>NUCLEAR EXPLOSIONS</topic><topic>POWER SPECTRA</topic><topic>SEISMIC WAVES</topic><topic>Seismology</topic><topic>SIGNAL PROCESSING</topic><topic>STATISTICAL DATA</topic><topic>UNDERGROUND EXPLOSIONS</topic><toplevel>online_resources</toplevel><creatorcontrib>Turpening, R M</creatorcontrib><creatorcontrib>MICHIGAN UNIV ANN ARBOR INST OF SCIENCE AND TECHNOLOGY</creatorcontrib><collection>DTIC Technical Reports</collection><collection>DTIC STINET</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>Turpening, R M</au><aucorp>MICHIGAN UNIV ANN ARBOR INST OF SCIENCE AND TECHNOLOGY</aucorp><format>book</format><genre>unknown</genre><ristype>RPRT</ristype><btitle>Release of Tectonic Strain by Large Underground Nuclear Detonation</btitle><date>1973-01</date><risdate>1973</risdate><abstract>The report describes an attempt to observe SH waves from several large underground nuclear explosions at first-zone distances (600 km) from each event. The data base was supplemented by seismograms from the World Wide Standard Station Network and Canadian Network. Good SH arrivals were observed at the shorter ranges (250 km) but not at ranges between 250 km and about 1800 km. In an effort to detect the arrival of any S waves (SV or SH) within this 'shadow zone', a flat-layered earth approximation was assumed (with hence critically refracted S-wave paths), and particle motion diagrams were then constructed. (The flat-layered earth hypothesis suggests small angles of incidence and, therefore, rectilinear particle motion). Such rectilinear motion was observed and in several 'shadow-zone' instances, arrival times were consistent with the model chosen.</abstract><oa>free_for_read</oa></addata></record>
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source	DTIC Technical Reports
subjects	BENHAM SHOT BOXCAR SHOT HANDLEY SHOT NUCLEAR EXPLOSIONS POWER SPECTRA SEISMIC WAVES Seismology SIGNAL PROCESSING STATISTICAL DATA UNDERGROUND EXPLOSIONS
title	Release of Tectonic Strain by Large Underground Nuclear Detonation
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