High‐resolution analysis of the gravest seismic normal modes after the 2004 Mw = 9 Sumatra earthquake using superconducting gravimeter data
Identifieur interne : 002816 ( Istex/Corpus ); précédent : 002815; suivant : 002817High‐resolution analysis of the gravest seismic normal modes after the 2004 Mw = 9 Sumatra earthquake using superconducting gravimeter data
Auteurs : S. Rosat ; T. Sato ; Y. Imanishi ; J. Hinderer ; Y. Tamura ; H. Mcqueen ; M. OhashiSource :
- Geophysical Research Letters [ 0094-8276 ] ; 2005-07.
English descriptors
- KwdEn :
- Buland, Canberra, Crossley, Dahlen, Earth planet, Earth sciences, Elastic parameters, Error bars, First time, Football mode, Free oscillations, Frequency resolution, Frequency splitting, Geophys, Gravimeter, Hinderer, Individual stations, Indonesian, Indonesian event, Lindberg, Multiple event, Noise level, Normal modes, Ocean research institute, Peru earthquake, Peru event, Phys, Prem, Prem predictions, Previous estimates, Recent earthquake, Research school, Ritzwoller, Rosat, Seismic, Seismic mode, Seismic modes, Seismic records, Singlet, Smaller errors, Splitting, Sumatra, Sumatra earthquake, Sumatra event, Superconducting, Superconducting gravimeter, Superconducting gravimeter data, Superconducting gravimeters.
- Teeft :
- Buland, Canberra, Crossley, Dahlen, Earth planet, Earth sciences, Elastic parameters, Error bars, First time, Football mode, Free oscillations, Frequency resolution, Frequency splitting, Geophys, Gravimeter, Hinderer, Individual stations, Indonesian, Indonesian event, Lindberg, Multiple event, Noise level, Normal modes, Ocean research institute, Peru earthquake, Peru event, Phys, Prem, Prem predictions, Previous estimates, Recent earthquake, Research school, Ritzwoller, Rosat, Seismic, Seismic mode, Seismic modes, Seismic records, Singlet, Smaller errors, Splitting, Sumatra, Sumatra earthquake, Sumatra event, Superconducting, Superconducting gravimeter, Superconducting gravimeter data, Superconducting gravimeters.
Abstract
The Mw > 9 Sumatra‐Andaman earthquake on December 26, 2004 has strongly excited the low‐frequency seismic modes and is a unique opportunity to improve the frequency and damping measurements of the gravest seismic modes. The precise estimation of the frequency splitting of the seismic modes below 1 mHz is needed to improve 1D‐density models of the Earth. From this event, 2S1 is observed for the first time without any stacking on both SG (Superconducting Gravimeter) and seismic records. We report here analyses of SG data obtained from 11 sites. The spectra of SG records clearly show the splitting of 0S2 into 5 completely resolved singlets and the splitting of 0S3 into 7 singlets at individual stations. The present results demonstrate that SGs provide high quality data for a precise analysis of the low‐frequency seismic modes.
Url:
DOI: 10.1029/2005GL023128
Links to Exploration step
ISTEX:D715172CF25E8637564B64D2DBF6EC58FFAF98A4Le document en format XML
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McQueen</name><affiliations><json:string>Research School of Earth Sciences, Australian National University, Canberra, ACT, Australia</json:string></affiliations></json:item><json:item><name>M. Ohashi</name><affiliations><json:string>Institute for Cosmic Ray Research, University of Tokyo, Tokyo, Japan</json:string></affiliations></json:item></author><articleId><json:string>2005GL023128</json:string></articleId><arkIstex>ark:/67375/WNG-LPM5XF89-W</arkIstex><language><json:string>eng</json:string></language><originalGenre><json:string>article</json:string></originalGenre><abstract>The Mw > 9 Sumatra‐Andaman earthquake on December 26, 2004 has strongly excited the low‐frequency seismic modes and is a unique opportunity to improve the frequency and damping measurements of the gravest seismic modes. The precise estimation of the frequency splitting of the seismic modes below 1 mHz is needed to improve 1D‐density models of the Earth. From this event, 2S1 is observed for the first time without any stacking on both SG (Superconducting Gravimeter) and seismic records. We report here analyses of SG data obtained from 11 sites. The spectra of SG records clearly show the splitting of 0S2 into 5 completely resolved singlets and the splitting of 0S3 into 7 singlets at individual stations. The present results demonstrate that SGs provide high quality data for a precise analysis of the low‐frequency seismic modes.</abstract><qualityIndicators><score>5.919</score><pdfWordCount>2299</pdfWordCount><pdfCharCount>14253</pdfCharCount><pdfVersion>1.3</pdfVersion><pdfPageCount>4</pdfPageCount><pdfPageSize>592 x 807 pts</pdfPageSize><refBibsNative>true</refBibsNative><abstractWordCount>135</abstractWordCount><abstractCharCount>835</abstractCharCount><keywordCount>0</keywordCount></qualityIndicators><title>High‐resolution analysis of the gravest seismic normal modes after the 2004 Mw = 9 Sumatra earthquake using superconducting gravimeter data</title><genre><json:string>article</json:string></genre><host><title>Geophysical Research Letters</title><language><json:string>unknown</json:string></language><doi><json:string>10.1002/(ISSN)1944-8007</json:string></doi><issn><json:string>0094-8276</json:string></issn><eissn><json:string>1944-8007</json:string></eissn><publisherId><json:string>GRL</json:string></publisherId><volume>32</volume><issue>13</issue><pages><first>n/a</first><last>n/a</last><total>4</total></pages><genre><json:string>journal</json:string></genre><subject><json:item><value>GEODESY AND GRAVITY</value></json:item><json:item><value>Time variable gravity</value></json:item><json:item><value>Instruments and techniques</value></json:item><json:item><value>SEISMOLOGY</value></json:item><json:item><value>Surface waves and free oscillations</value></json:item><json:item><value>Earthquake interaction, forecasting, and prediction</value></json:item><json:item><value>Seismicity and tectonics</value></json:item><json:item><value>Solid Earth</value></json:item></subject></host><namedEntities><unitex><date><json:string>5601</json:string><json:string>2005</json:string><json:string>2001</json:string><json:string>1977</json:string><json:string>2004</json:string></date><geogName></geogName><orgName><json:string>Scientific Research of the Ministry of Education, Culture, Sport, Science and Technology</json:string><json:string>Germany, Medicina</json:string><json:string>Australia, Strasbourg</json:string><json:string>Research School of Earth Sciences, Australian National University, Canberra, ACT, Australia</json:string><json:string>SU</json:string><json:string>Japan Society for the Promotion of Science</json:string><json:string>Austria and Sutherland</json:string><json:string>Italy, Vienna</json:string><json:string>France, Bad-Homburg</json:string><json:string>BH</json:string><json:string>Ocean Research Institute, University of Tokyo, Tokyo, Japan</json:string><json:string>ST</json:string><json:string>Institute for Cosmic Ray Research, University of Tokyo, Tokyo, Japan</json:string><json:string>CB</json:string><json:string>Peru Event</json:string><json:string>American Geophysical Union</json:string><json:string>National Astronomical Observatory of Japan, Iwate, Japan</json:string><json:string>Japan, Canberra</json:string></orgName><orgName_funder></orgName_funder><orgName_provider></orgName_provider><persName><json:string>Van Camp</json:string><json:string>Y. Tamura</json:string><json:string>J. Hinderer</json:string><json:string>Y. Imanishi</json:string><json:string>H. McQueen</json:string><json:string>T. Sato</json:string><json:string>M. Ohashi</json:string><json:string>Dahlen</json:string></persName><placeName><json:string>Canberra</json:string><json:string>Japan</json:string><json:string>Strasbourg</json:string><json:string>South Africa</json:string><json:string>Vienna</json:string><json:string>France</json:string></placeName><ref_url><json:string>http://www.eas.slu.edu/GGP/ sumatra.html</json:string></ref_url><ref_bibl><json:string>Freybourger et al.</json:string><json:string>[1986]</json:string><json:string>Buland et al. [1979]</json:string><json:string>Rosat et al., 2003b</json:string><json:string>[1979]</json:string><json:string>Dziewonski and Anderson, 1981</json:string><json:string>Rosat et al., 2003a</json:string><json:string>[10]</json:string><json:string>Zurn and Widmer, 1995</json:string><json:string>[5]</json:string><json:string>Ritzwoller et al., 1986</json:string><json:string>Rosat et al.</json:string><json:string>Ritzwoller et al. [1986]</json:string><json:string>Ritzwoller and Lavely, 1995</json:string><json:string>[9]</json:string><json:string>Crossley et al., 1999</json:string><json:string>[2]</json:string><json:string>[1982]</json:string></ref_bibl><bibl></bibl></unitex></namedEntities><ark><json:string>ark:/67375/WNG-LPM5XF89-W</json:string></ark><categories><wos><json:string>1 - science</json:string><json:string>2 - geosciences, multidisciplinary</json:string></wos><scienceMetrix><json:string>1 - natural sciences</json:string><json:string>2 - earth & environmental sciences</json:string><json:string>3 - meteorology & atmospheric sciences</json:string></scienceMetrix><scopus><json:string>1 - Physical Sciences</json:string><json:string>2 - Earth and Planetary Sciences</json:string><json:string>3 - General Earth and Planetary Sciences</json:string><json:string>1 - Physical Sciences</json:string><json:string>2 - Earth and Planetary Sciences</json:string><json:string>3 - Geophysics</json:string></scopus></categories><publicationDate>2005</publicationDate><copyrightDate>2005</copyrightDate><doi><json:string>10.1029/2005GL023128</json:string></doi><id>D715172CF25E8637564B64D2DBF6EC58FFAF98A4</id><score>1</score><fulltext><json:item><extension>pdf</extension><original>true</original><mimetype>application/pdf</mimetype><uri>https://api.istex.fr/document/D715172CF25E8637564B64D2DBF6EC58FFAF98A4/fulltext/pdf</uri></json:item><json:item><extension>zip</extension><original>false</original><mimetype>application/zip</mimetype><uri>https://api.istex.fr/document/D715172CF25E8637564B64D2DBF6EC58FFAF98A4/fulltext/zip</uri></json:item><istex:fulltextTEI uri="https://api.istex.fr/document/D715172CF25E8637564B64D2DBF6EC58FFAF98A4/fulltext/tei"><teiHeader><fileDesc><titleStmt><title level="a" type="main">High‐resolution analysis of the gravest seismic normal modes after the 2004 M<hi rend="subscript">w</hi> = 9 Sumatra earthquake using superconducting gravimeter 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type="first">S.</forename><surname>Rosat</surname></persName><email>rosat@miz.nao.ac.jp</email><affiliation><orgName>National Astronomical Observatory of Japan</orgName><address><settlement type="city">Iwate</settlement><country key="JP">Japan</country></address></affiliation></author><author xml:id="author-0001"><persName><forename type="first">T.</forename><surname>Sato</surname></persName><affiliation><orgName>National Astronomical Observatory of Japan</orgName><address><settlement type="city">Iwate</settlement><country key="JP">Japan</country></address></affiliation></author><author xml:id="author-0002"><persName><forename type="first">Y.</forename><surname>Imanishi</surname></persName><affiliation><orgName>Ocean Research Institute</orgName><orgName>University of Tokyo</orgName><address><settlement type="city">Tokyo</settlement><country key="JP">Japan</country></address></affiliation></author><author xml:id="author-0003"><persName><forename type="first">J.</forename><surname>Hinderer</surname></persName><affiliation><orgName>UMR 7516 CNRS‐ULP</orgName><orgName>Institut de Physique du Globe de Strasbourg (IPGS‐EOST)</orgName><address><settlement type="city">Strasbourg</settlement><country key="FR">France</country></address></affiliation></author><author xml:id="author-0004"><persName><forename type="first">Y.</forename><surname>Tamura</surname></persName><affiliation><orgName>National Astronomical Observatory of Japan</orgName><address><settlement type="city">Iwate</settlement><country key="JP">Japan</country></address></affiliation></author><author xml:id="author-0005"><persName><forename type="first">H.</forename><surname>McQueen</surname></persName><affiliation><orgName>Research School of Earth Sciences</orgName><orgName>Australian National University</orgName><address><settlement type="city">Canberra, ACT</settlement><country key="AU">Australia</country></address></affiliation></author><author xml:id="author-0006"><persName><forename type="first">M.</forename><surname>Ohashi</surname></persName><affiliation><orgName>Institute for Cosmic Ray Research</orgName><orgName>University of Tokyo</orgName><address><settlement type="city">Tokyo</settlement><country key="JP">Japan</country></address></affiliation></author><idno type="istex">D715172CF25E8637564B64D2DBF6EC58FFAF98A4</idno><idno type="ark">ark:/67375/WNG-LPM5XF89-W</idno><idno type="DOI">10.1029/2005GL023128</idno><idno type="editorialOffice">2005GL023128</idno><idno type="society">L13304</idno><idno type="unit">GRL19959</idno><idno type="toTypesetVersion">file:GRL.GRL19959.pdf</idno></analytic><monogr><title level="j" type="main">Geophysical Research Letters</title><title level="j" type="alt">GEOPHYSICAL RESEARCH LETTERS</title><idno type="pISSN">0094-8276</idno><idno type="eISSN">1944-8007</idno><idno type="book-DOI">10.1002/(ISSN)1944-8007</idno><idno type="book-part-DOI">10.1002/grl.v32.13</idno><idno type="product">GRL</idno><idno type="coden">GPRLAJ</idno><imprint><biblScope unit="vol">32</biblScope><biblScope unit="issue">13</biblScope><biblScope unit="page-count">4</biblScope><date type="published" when="2005-07"></date></imprint></monogr></biblStruct></sourceDesc></fileDesc><profileDesc><abstract style="main"><p xml:id="grl19959-para-0001">The M<hi rend="subscript">w</hi> > 9 Sumatra‐Andaman earthquake on December 26, 2004 has strongly excited the low‐frequency seismic modes and is a unique opportunity to improve the frequency and damping measurements of the gravest seismic modes. The precise estimation of the frequency splitting of the seismic modes below 1 mHz is needed to improve 1D‐density models of the Earth. From this event, <hi rend="subscript">2</hi>S<hi rend="subscript">1</hi> is observed for the first time without any stacking on both SG (Superconducting Gravimeter) and seismic records. We report here analyses of SG data obtained from 11 sites. The spectra of SG records clearly show the splitting of <hi rend="subscript">0</hi>S<hi rend="subscript">2</hi> into 5 completely resolved singlets and the splitting of <hi rend="subscript">0</hi>S<hi rend="subscript">3</hi> into 7 singlets at individual stations. The present results demonstrate that SGs provide high quality data for a precise analysis of the low‐frequency seismic modes.</p></abstract><textClass><classCode scheme="http://psi.agu.org/taxonomy5/1200">GEODESY AND GRAVITY</classCode><classCode scheme="http://psi.agu.org/taxonomy5/7200">SEISMOLOGY</classCode><keywords rend="articleCategory"><term>Solid Earth</term></keywords><keywords rend="tocHeading1"><term>Solid Earth</term></keywords></textClass><langUsage><language ident="en"></language></langUsage></profileDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/D715172CF25E8637564B64D2DBF6EC58FFAF98A4/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Wiley, elements deleted: body"><istex:xmlDeclaration>version="1.0" encoding="UTF-8" standalone="yes"</istex:xmlDeclaration><istex:document><component type="serialArticle" version="2.0" xml:lang="en" xml:id="grl19959"><header><publicationMeta level="product"><doi>10.1002/(ISSN)1944-8007</doi><issn type="print">0094-8276</issn><issn type="electronic">1944-8007</issn><idGroup><id type="product" value="GRL"></id><id type="coden" value="GPRLAJ"></id></idGroup><titleGroup><title type="main" xml:lang="en" sort="GEOPHYSICAL RESEARCH LETTERS">Geophysical Research Letters</title><title type="short">Geophys. Res. Lett.</title></titleGroup></publicationMeta><publicationMeta level="part" position="130"><doi>10.1002/grl.v32.13</doi><numberingGroup><numbering type="journalVolume" number="32">32</numbering><numbering type="journalIssue">13</numbering></numberingGroup><coverDate startDate="2005-07">July 2005</coverDate></publicationMeta><publicationMeta level="unit" position="520" type="article" status="forIssue"><doi>10.1029/2005GL023128</doi><idGroup><id type="editorialOffice" value="2005GL023128"></id><id type="society" value="L13304"></id><id type="unit" value="GRL19959"></id></idGroup><countGroup><count type="pageTotal" number="4"></count></countGroup><titleGroup><title type="articleCategory">Solid Earth</title><title type="tocHeading1">Solid Earth</title></titleGroup><copyright ownership="thirdParty">Copyright 2005 by the American Geophysical Union.</copyright><eventGroup><event type="manuscriptReceived" date="2005-04-01"></event><event type="manuscriptRevised" date="2005-05-26"></event><event type="manuscriptAccepted" date="2005-06-06"></event><event type="firstOnline" date="2005-07-06"></event><event type="publishedOnlineFinalForm" date="2005-07-06"></event><event type="xmlConverted" agent="SPi Global Converter:AGUv3.43_TO_WileyML3Gv1.0.3 version:1.3; WileyML 3G Packaging Tool v1.0; AGU2WileyML3G Final Clean Up v1.0" date="2012-12-15"></event><event type="xmlConverted" agent="Converter:WILEY_ML3G_TO_WILEY_ML3GV2 version:3.8.8" date="2014-01-26"></event><event type="xmlConverted" agent="Converter:WML3G_To_WML3G version:4.1.7 mode:FullText,remove_FC" date="2014-10-23"></event></eventGroup><numberingGroup><numbering type="pageFirst">n/a</numbering><numbering type="pageLast">n/a</numbering></numberingGroup><subjectInfo><subject href="http://psi.agu.org/taxonomy5/1200">GEODESY AND GRAVITY</subject><subjectInfo><subject href="http://psi.agu.org/taxonomy5/1217">Time variable gravity</subject><subject href="http://psi.agu.org/taxonomy5/1294">Instruments and techniques</subject></subjectInfo><subject href="http://psi.agu.org/taxonomy5/7200">SEISMOLOGY</subject><subjectInfo><subject href="http://psi.agu.org/taxonomy5/7255">Surface waves and free oscillations</subject><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/7223">Earthquake interaction, forecasting, and prediction</subject><subject role="crossTerm" href="http://psi.agu.org/taxonomy5/7230">Seismicity and tectonics</subject></subjectInfo></subjectInfo><selfCitationGroup><citation xml:id="grl19959-cit-0000" type="self"><author><familyName>Rosat</familyName>, <givenNames>S.</givenNames></author>, <author><givenNames>T.</givenNames> <familyName>Sato</familyName></author>, <author><givenNames>Y.</givenNames> <familyName>Imanishi</familyName></author>, <author><givenNames>J.</givenNames> <familyName>Hinderer</familyName></author>, <author><givenNames>Y.</givenNames> <familyName>Tamura</familyName></author>, <author><givenNames>H.</givenNames> <familyName>McQueen</familyName></author>, and <author><givenNames>M.</givenNames> <familyName>Ohashi</familyName></author> (<pubYear year="2005">2005</pubYear>), <articleTitle>High‐resolution analysis of the gravest seismic normal modes after the 2004 M<sub>w</sub> = 9 Sumatra earthquake using superconducting gravimeter data</articleTitle>, <journalTitle>Geophys. Res. Lett.</journalTitle>, <vol>32</vol>, L13304, doi:<accessionId ref="info:doi/10.1029/2005GL023128">10.1029/2005GL023128</accessionId>.</citation></selfCitationGroup><linkGroup><link type="toTypesetVersion" href="file:GRL.GRL19959.pdf"></link></linkGroup></publicationMeta><contentMeta><countGroup><count type="figureTotal" number="4"></count><count type="tableTotal" number="3"></count></countGroup><titleGroup><title type="main">High‐resolution analysis of the gravest seismic normal modes after the 2004 M<sub>w</sub> = 9 Sumatra earthquake using superconducting gravimeter data</title><title type="short">SUPERCONDUCTING GRAVIMETER DATA</title><title type="shortAuthors">Rosat <i>et al</i>.</title></titleGroup><creators><creator creatorRole="author" xml:id="grl19959-cr-0001" affiliationRef="#grl19959-aff-0001"><personName><givenNames>S.</givenNames> <familyName>Rosat</familyName></personName><contactDetails><email normalForm="rosat@miz.nao.ac.jp">rosat@miz.nao.ac.jp</email></contactDetails></creator><creator creatorRole="author" xml:id="grl19959-cr-0002" affiliationRef="#grl19959-aff-0001"><personName><givenNames>T.</givenNames> <familyName>Sato</familyName></personName></creator><creator creatorRole="author" xml:id="grl19959-cr-0003" affiliationRef="#grl19959-aff-0002"><personName><givenNames>Y.</givenNames> <familyName>Imanishi</familyName></personName></creator><creator creatorRole="author" xml:id="grl19959-cr-0004" affiliationRef="#grl19959-aff-0003"><personName><givenNames>J.</givenNames> <familyName>Hinderer</familyName></personName></creator><creator creatorRole="author" xml:id="grl19959-cr-0005" affiliationRef="#grl19959-aff-0001"><personName><givenNames>Y.</givenNames> <familyName>Tamura</familyName></personName></creator><creator creatorRole="author" xml:id="grl19959-cr-0006" affiliationRef="#grl19959-aff-0004"><personName><givenNames>H.</givenNames> <familyName>McQueen</familyName></personName></creator><creator creatorRole="author" xml:id="grl19959-cr-0007" affiliationRef="#grl19959-aff-0005"><personName><givenNames>M.</givenNames> <familyName>Ohashi</familyName></personName></creator></creators><affiliationGroup><affiliation countryCode="JP" type="organization" xml:id="grl19959-aff-0001"><orgName>National Astronomical Observatory of Japan</orgName><address><city>Iwate</city><country>Japan</country></address></affiliation><affiliation countryCode="JP" type="organization" xml:id="grl19959-aff-0002"><orgDiv>Ocean Research Institute</orgDiv><orgName>University of Tokyo</orgName><address><city>Tokyo</city><country>Japan</country></address></affiliation><affiliation countryCode="FR" type="organization" xml:id="grl19959-aff-0003"><orgDiv>UMR 7516 CNRS‐ULP</orgDiv><orgName>Institut de Physique du Globe de Strasbourg (IPGS‐EOST)</orgName><address><city>Strasbourg</city><country>France</country></address></affiliation><affiliation countryCode="AU" type="organization" xml:id="grl19959-aff-0004"><orgDiv>Research School of Earth Sciences</orgDiv><orgName>Australian National University</orgName><address><city>Canberra, ACT</city><country>Australia</country></address></affiliation><affiliation countryCode="JP" type="organization" xml:id="grl19959-aff-0005"><orgDiv>Institute for Cosmic Ray Research</orgDiv><orgName>University of Tokyo</orgName><address><city>Tokyo</city><country>Japan</country></address></affiliation></affiliationGroup><supportingInformation><supportingInfoItem><mediaResource alt="supplementary data" mimeType="text/plain" href="urn-x:wiley:00948276:media:grl19959:grl19959-sup-0001-t01"></mediaResource><caption>Tab‐delimited Table 1.</caption></supportingInfoItem><supportingInfoItem><mediaResource alt="supplementary data" mimeType="text/plain" href="urn-x:wiley:00948276:media:grl19959:grl19959-sup-0002-t02"></mediaResource><caption>Tab‐delimited Table 2.</caption></supportingInfoItem><supportingInfoItem><mediaResource alt="supplementary data" mimeType="text/plain" href="urn-x:wiley:00948276:media:grl19959:grl19959-sup-0003-t03"></mediaResource><caption>Tab‐delimited Table 3.</caption></supportingInfoItem></supportingInformation><abstractGroup><abstract type="main"><p xml:id="grl19959-para-0001" label="1">The M<sub>w</sub> > 9 Sumatra‐Andaman earthquake on December 26, 2004 has strongly excited the low‐frequency seismic modes and is a unique opportunity to improve the frequency and damping measurements of the gravest seismic modes. The precise estimation of the frequency splitting of the seismic modes below 1 mHz is needed to improve 1D‐density models of the Earth. From this event, <sub>2</sub>S<sub>1</sub> is observed for the first time without any stacking on both SG (Superconducting Gravimeter) and seismic records. We report here analyses of SG data obtained from 11 sites. The spectra of SG records clearly show the splitting of <sub>0</sub>S<sub>2</sub> into 5 completely resolved singlets and the splitting of <sub>0</sub>S<sub>3</sub> into 7 singlets at individual stations. The present results demonstrate that SGs provide high quality data for a precise analysis of the low‐frequency seismic modes.</p></abstract></abstractGroup></contentMeta></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>High‐resolution analysis of the gravest seismic normal modes after the 2004 Mw = 9 Sumatra earthquake using superconducting gravimeter data</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>SUPERCONDUCTING GRAVIMETER DATA</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>High‐resolution analysis of the gravest seismic normal modes after the 2004 Mw = 9 Sumatra earthquake using superconducting gravimeter data</title></titleInfo><name type="personal"><namePart type="given">S.</namePart><namePart type="family">Rosat</namePart><affiliation>E-mail: rosat@miz.nao.ac.jp</affiliation><affiliation>National Astronomical Observatory of Japan, Iwate, Japan</affiliation><affiliation>E-mail: rosat@miz.nao.ac.jp</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">T.</namePart><namePart type="family">Sato</namePart><affiliation>National Astronomical Observatory of Japan, Iwate, Japan</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Y.</namePart><namePart type="family">Imanishi</namePart><affiliation>Ocean Research Institute, University of Tokyo, Tokyo, Japan</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">J.</namePart><namePart type="family">Hinderer</namePart><affiliation>UMR 7516 CNRS‐ULP, Institut de Physique du Globe de Strasbourg (IPGS‐EOST), Strasbourg, France</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">Y.</namePart><namePart type="family">Tamura</namePart><affiliation>National Astronomical Observatory of Japan, Iwate, Japan</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">H.</namePart><namePart type="family">McQueen</namePart><affiliation>Research School of Earth Sciences, Australian National University, Canberra, ACT, Australia</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">M.</namePart><namePart type="family">Ohashi</namePart><affiliation>Institute for Cosmic Ray Research, University of Tokyo, Tokyo, Japan</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article" authority="ISTEX" authorityURI="https://content-type.data.istex.fr" valueURI="https://content-type.data.istex.fr/ark:/67375/XTP-6N5SZHKN-D">article</genre><originInfo><publisher>Blackwell Publishing Ltd</publisher><dateIssued encoding="w3cdtf">2005-07</dateIssued><dateCaptured encoding="w3cdtf">2005-04-01</dateCaptured><dateValid encoding="w3cdtf">2005-06-06</dateValid><edition>Rosat, S., T. Sato, Y. Imanishi, J. Hinderer, Y. Tamura, H. McQueen, and M. Ohashi (2005), High‐resolution analysis of the gravest seismic normal modes after the 2004 Mw = 9 Sumatra earthquake using superconducting gravimeter data, Geophys. Res. Lett., 32, L13304, doi:10.1029/2005GL023128.</edition><copyrightDate encoding="w3cdtf">2005</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><extent unit="figures">4</extent><extent unit="tables">3</extent></physicalDescription><abstract>The Mw > 9 Sumatra‐Andaman earthquake on December 26, 2004 has strongly excited the low‐frequency seismic modes and is a unique opportunity to improve the frequency and damping measurements of the gravest seismic modes. The precise estimation of the frequency splitting of the seismic modes below 1 mHz is needed to improve 1D‐density models of the Earth. From this event, 2S1 is observed for the first time without any stacking on both SG (Superconducting Gravimeter) and seismic records. We report here analyses of SG data obtained from 11 sites. The spectra of SG records clearly show the splitting of 0S2 into 5 completely resolved singlets and the splitting of 0S3 into 7 singlets at individual stations. The present results demonstrate that SGs provide high quality data for a precise analysis of the low‐frequency seismic modes.</abstract><note type="additional physical form">Tab‐delimited Table 1.Tab‐delimited Table 2.Tab‐delimited Table 3.</note><relatedItem type="host"><titleInfo><title>Geophysical Research Letters</title></titleInfo><titleInfo type="abbreviated"><title>Geophys. Res. Lett.</title></titleInfo><genre type="journal" authority="ISTEX" authorityURI="https://publication-type.data.istex.fr" valueURI="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</genre><subject><genre>index-terms</genre><topic authorityURI="http://psi.agu.org/taxonomy5/1200">GEODESY AND GRAVITY</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1217">Time variable gravity</topic><topic authorityURI="http://psi.agu.org/taxonomy5/1294">Instruments and techniques</topic><topic authorityURI="http://psi.agu.org/taxonomy5/7200">SEISMOLOGY</topic><topic authorityURI="http://psi.agu.org/taxonomy5/7255">Surface waves and free oscillations</topic><topic authorityURI="http://psi.agu.org/taxonomy5/7223">Earthquake interaction, forecasting, and prediction</topic><topic authorityURI="http://psi.agu.org/taxonomy5/7230">Seismicity and tectonics</topic></subject><subject><genre>article-category</genre><topic>Solid Earth</topic></subject><identifier type="ISSN">0094-8276</identifier><identifier type="eISSN">1944-8007</identifier><identifier type="DOI">10.1002/(ISSN)1944-8007</identifier><identifier type="CODEN">GPRLAJ</identifier><identifier type="PublisherID">GRL</identifier><part><date>2005</date><detail type="volume"><caption>vol.</caption><number>32</number></detail><detail type="issue"><caption>no.</caption><number>13</number></detail><extent unit="pages"><start>n/a</start><end>n/a</end><total>4</total></extent></part></relatedItem><identifier type="istex">D715172CF25E8637564B64D2DBF6EC58FFAF98A4</identifier><identifier type="ark">ark:/67375/WNG-LPM5XF89-W</identifier><identifier type="DOI">10.1029/2005GL023128</identifier><identifier type="ArticleID">2005GL023128</identifier><accessCondition type="use and reproduction" contentType="copyright">Copyright 2005 by the American Geophysical Union.</accessCondition><recordInfo><recordContentSource authority="ISTEX" authorityURI="https://loaded-corpus.data.istex.fr" valueURI="https://loaded-corpus.data.istex.fr/ark:/67375/XBH-L0C46X92-X">wiley</recordContentSource></recordInfo></mods><json:item><extension>json</extension><original>false</original><mimetype>application/json</mimetype><uri>https://api.istex.fr/document/D715172CF25E8637564B64D2DBF6EC58FFAF98A4/metadata/json</uri></json:item></metadata><serie></serie></istex></record>Pour manipuler ce document sous Unix (Dilib)
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