Coseismic gravity changes of the 2011 Tohoku-Oki earthquake from satellite gravimetry
The massive Tohoku‐Oki earthquake of a moment magnitude (Mw) of 9.0 occurred on 11 March, 2011 off the Pacific coast of the Northeastern Japan. The mass redistribution in and around the focal region associated with this earthquake was studied using the gravity changes detected by Gravity Recovery an...
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| Veröffentlicht in: | Geophysical research letters 2011-09, Vol.38 (7), p.n/a |
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| description | The massive Tohoku‐Oki earthquake of a moment magnitude (Mw) of 9.0 occurred on 11 March, 2011 off the Pacific coast of the Northeastern Japan. The mass redistribution in and around the focal region associated with this earthquake was studied using the gravity changes detected by Gravity Recovery and Climate Experiment (GRACE) satellite. After the 2004 Sumatra‐Andaman and the 2010 Central Chile (Maule) earthquakes, the present study presents the third case of clear detection of coseismic gravity changes by GRACE. The observed gravity changes were dominated by decrease over the back‐arc region of ∼7 μGal or less. This reflects, to a large extent, coseismic crustal dilatation of the landward plate. They agree well with the changes calculated with the Green's function for the realistic earth using fault parameters inferred from coseismic crustal movements. The spatial patterns of the gravity changes of these earthquakes are very similar because they are all shallow angle reverse faulting at convergent plate boundaries. We found linear relationship between gravity decreases and seismic moments.
Key Points
GRACE detected coseisimic gravity changes by 2011 Tohoku‐Oki earthquake
The third case that GRACE detected coseisimic gravity changes
Coseismic gravity change roughly scales with the seismic moment |
| doi_str_mv | 10.1029/2011GL049018 |
| format | Article |
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Key Points
GRACE detected coseisimic gravity changes by 2011 Tohoku‐Oki earthquake
The third case that GRACE detected coseisimic gravity changes
Coseismic gravity change roughly scales with the seismic moment</description><identifier>ISSN: 0094-8276</identifier><identifier>EISSN: 1944-8007</identifier><identifier>DOI: 10.1029/2011GL049018</identifier><language>eng</language><publisher>Washington: Blackwell Publishing Ltd</publisher><subject>2011 Tohoku-Oki earhquake ; Boundaries ; coseisimic gravity change ; Earthquakes ; Geodetic surveys ; Geodetics ; GRACE ; GRACE (experiment) ; Gravimetry ; Gravitation ; Gravity ; Marine ; Mathematical analysis ; Movements ; Plate boundaries ; Rock deformation ; satellite geodesy ; Satellites ; Seismic activity ; Seismic engineering ; Seismic phenomena ; Seismology ; Space ; time-variable gravity</subject><ispartof>Geophysical research letters, 2011-09, Vol.38 (7), p.n/a</ispartof><rights>Copyright 2011 by the American Geophysical Union.</rights><rights>Copyright 2011 by American Geophysical Union</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a5431-b1ba81dd971b1d69e03be9ae6d07a42201f2f803df6e33ff7540269fe7e160323</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1029%2F2011GL049018$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1029%2F2011GL049018$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,1427,11493,27901,27902,45550,45551,46384,46443,46808,46867</link.rule.ids></links><search><creatorcontrib>Matsuo, Koji</creatorcontrib><creatorcontrib>Heki, Kosuke</creatorcontrib><title>Coseismic gravity changes of the 2011 Tohoku-Oki earthquake from satellite gravimetry</title><title>Geophysical research letters</title><addtitle>Geophys. Res. Lett</addtitle><description>The massive Tohoku‐Oki earthquake of a moment magnitude (Mw) of 9.0 occurred on 11 March, 2011 off the Pacific coast of the Northeastern Japan. The mass redistribution in and around the focal region associated with this earthquake was studied using the gravity changes detected by Gravity Recovery and Climate Experiment (GRACE) satellite. After the 2004 Sumatra‐Andaman and the 2010 Central Chile (Maule) earthquakes, the present study presents the third case of clear detection of coseismic gravity changes by GRACE. The observed gravity changes were dominated by decrease over the back‐arc region of ∼7 μGal or less. This reflects, to a large extent, coseismic crustal dilatation of the landward plate. They agree well with the changes calculated with the Green's function for the realistic earth using fault parameters inferred from coseismic crustal movements. The spatial patterns of the gravity changes of these earthquakes are very similar because they are all shallow angle reverse faulting at convergent plate boundaries. We found linear relationship between gravity decreases and seismic moments.
Key Points
GRACE detected coseisimic gravity changes by 2011 Tohoku‐Oki earthquake
The third case that GRACE detected coseisimic gravity changes
Coseismic gravity change roughly scales with the seismic moment</description><subject>2011 Tohoku-Oki earhquake</subject><subject>Boundaries</subject><subject>coseisimic gravity change</subject><subject>Earthquakes</subject><subject>Geodetic surveys</subject><subject>Geodetics</subject><subject>GRACE</subject><subject>GRACE (experiment)</subject><subject>Gravimetry</subject><subject>Gravitation</subject><subject>Gravity</subject><subject>Marine</subject><subject>Mathematical analysis</subject><subject>Movements</subject><subject>Plate boundaries</subject><subject>Rock deformation</subject><subject>satellite geodesy</subject><subject>Satellites</subject><subject>Seismic activity</subject><subject>Seismic engineering</subject><subject>Seismic phenomena</subject><subject>Seismology</subject><subject>Space</subject><subject>time-variable gravity</subject><issn>0094-8276</issn><issn>1944-8007</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>8G5</sourceid><sourceid>BENPR</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNp9kUFPGzEQhS1UJFLg1h9gqYf2sjBj79rrYxvRUCkCCSWiN8vJjolJNgv2btv8exylqhAHTjOH772ZN8PYJ4QLBGEuBSBOplAawPqIjdCUZVED6A9sBGByL7Q6YR9TegQACRJHbD7uEoXUhiV_iO536Hd8uXLbB0q887xfEd-b8lm36tZDcbsOnFzsV8-DWxP3sWt5cj1tNqGng0FLfdydsWPvNonO_9VTNv9xNRtfF9Pbyc_xt2nhqlJiscCFq7FpjMYFNsoQyAUZR6oB7UqRJ3vha5CNVySl97oqQSjjSRMqkEKesi8H36fYPQ-UetuGtMzruC11Q7JGybrKp8FMfn2XRKWzpcpZM_r5DfrYDXGbc1hErLQRUu4pcaD-hA3t7FMMrYs7i2D3r7CvX2End1OR99iLioMopJ7-_he5uLZKS13Z-5uJrW6uv6O5l_aXfAGUToo0</recordid><startdate>20110922</startdate><enddate>20110922</enddate><creator>Matsuo, Koji</creator><creator>Heki, Kosuke</creator><general>Blackwell Publishing Ltd</general><general>John Wiley & Sons, Inc</general><scope>BSCLL</scope><scope>3V.</scope><scope>7TG</scope><scope>7TN</scope><scope>7XB</scope><scope>88I</scope><scope>8FD</scope><scope>8FE</scope><scope>8FG</scope><scope>8FK</scope><scope>8G5</scope><scope>ABJCF</scope><scope>ABUWG</scope><scope>AEUYN</scope><scope>AFKRA</scope><scope>ARAPS</scope><scope>ATCPS</scope><scope>AZQEC</scope><scope>BENPR</scope><scope>BGLVJ</scope><scope>BHPHI</scope><scope>BKSAR</scope><scope>CCPQU</scope><scope>DWQXO</scope><scope>F1W</scope><scope>FR3</scope><scope>GNUQQ</scope><scope>GUQSH</scope><scope>H8D</scope><scope>H96</scope><scope>HCIFZ</scope><scope>KL.</scope><scope>KR7</scope><scope>L.G</scope><scope>L6V</scope><scope>L7M</scope><scope>M2O</scope><scope>M2P</scope><scope>M7S</scope><scope>MBDVC</scope><scope>P5Z</scope><scope>P62</scope><scope>PATMY</scope><scope>PCBAR</scope><scope>PQEST</scope><scope>PQQKQ</scope><scope>PQUKI</scope><scope>PTHSS</scope><scope>PYCSY</scope><scope>Q9U</scope><scope>7SM</scope></search><sort><creationdate>20110922</creationdate><title>Coseismic gravity changes of the 2011 Tohoku-Oki earthquake from satellite gravimetry</title><author>Matsuo, Koji ; Heki, Kosuke</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a5431-b1ba81dd971b1d69e03be9ae6d07a42201f2f803df6e33ff7540269fe7e160323</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>2011 Tohoku-Oki earhquake</topic><topic>Boundaries</topic><topic>coseisimic gravity change</topic><topic>Earthquakes</topic><topic>Geodetic surveys</topic><topic>Geodetics</topic><topic>GRACE</topic><topic>GRACE (experiment)</topic><topic>Gravimetry</topic><topic>Gravitation</topic><topic>Gravity</topic><topic>Marine</topic><topic>Mathematical analysis</topic><topic>Movements</topic><topic>Plate boundaries</topic><topic>Rock deformation</topic><topic>satellite geodesy</topic><topic>Satellites</topic><topic>Seismic activity</topic><topic>Seismic engineering</topic><topic>Seismic phenomena</topic><topic>Seismology</topic><topic>Space</topic><topic>time-variable gravity</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Matsuo, Koji</creatorcontrib><creatorcontrib>Heki, Kosuke</creatorcontrib><collection>Istex</collection><collection>ProQuest Central (Corporate)</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Oceanic Abstracts</collection><collection>ProQuest Central (purchase pre-March 2016)</collection><collection>Science Database (Alumni Edition)</collection><collection>Technology Research Database</collection><collection>ProQuest SciTech Collection</collection><collection>ProQuest Technology Collection</collection><collection>ProQuest Central (Alumni) (purchase pre-March 2016)</collection><collection>Research Library (Alumni Edition)</collection><collection>Materials Science & Engineering Collection</collection><collection>ProQuest Central (Alumni Edition)</collection><collection>ProQuest One Sustainability</collection><collection>ProQuest Central UK/Ireland</collection><collection>Advanced Technologies & Aerospace Collection</collection><collection>Agricultural & Environmental Science Collection</collection><collection>ProQuest Central Essentials</collection><collection>ProQuest Central</collection><collection>Technology Collection</collection><collection>Natural Science Collection</collection><collection>Earth, Atmospheric & Aquatic Science Collection</collection><collection>ProQuest One Community College</collection><collection>ProQuest Central Korea</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>ProQuest Central Student</collection><collection>Research Library Prep</collection><collection>Aerospace Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>SciTech Premium Collection</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Civil Engineering Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>ProQuest Engineering Collection</collection><collection>Advanced Technologies Database with Aerospace</collection><collection>Research Library</collection><collection>Science Database</collection><collection>Engineering Database</collection><collection>Research Library (Corporate)</collection><collection>Advanced Technologies & Aerospace Database</collection><collection>ProQuest Advanced Technologies & Aerospace Collection</collection><collection>Environmental Science Database</collection><collection>Earth, Atmospheric & Aquatic Science Database</collection><collection>ProQuest One Academic Eastern Edition (DO NOT USE)</collection><collection>ProQuest One Academic</collection><collection>ProQuest One Academic UKI Edition</collection><collection>Engineering Collection</collection><collection>Environmental Science Collection</collection><collection>ProQuest Central Basic</collection><collection>Earthquake Engineering Abstracts</collection><jtitle>Geophysical research letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Matsuo, Koji</au><au>Heki, Kosuke</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Coseismic gravity changes of the 2011 Tohoku-Oki earthquake from satellite gravimetry</atitle><jtitle>Geophysical research letters</jtitle><addtitle>Geophys. Res. Lett</addtitle><date>2011-09-22</date><risdate>2011</risdate><volume>38</volume><issue>7</issue><epage>n/a</epage><issn>0094-8276</issn><eissn>1944-8007</eissn><abstract>The massive Tohoku‐Oki earthquake of a moment magnitude (Mw) of 9.0 occurred on 11 March, 2011 off the Pacific coast of the Northeastern Japan. The mass redistribution in and around the focal region associated with this earthquake was studied using the gravity changes detected by Gravity Recovery and Climate Experiment (GRACE) satellite. After the 2004 Sumatra‐Andaman and the 2010 Central Chile (Maule) earthquakes, the present study presents the third case of clear detection of coseismic gravity changes by GRACE. The observed gravity changes were dominated by decrease over the back‐arc region of ∼7 μGal or less. This reflects, to a large extent, coseismic crustal dilatation of the landward plate. They agree well with the changes calculated with the Green's function for the realistic earth using fault parameters inferred from coseismic crustal movements. The spatial patterns of the gravity changes of these earthquakes are very similar because they are all shallow angle reverse faulting at convergent plate boundaries. We found linear relationship between gravity decreases and seismic moments.
Key Points
GRACE detected coseisimic gravity changes by 2011 Tohoku‐Oki earthquake
The third case that GRACE detected coseisimic gravity changes
Coseismic gravity change roughly scales with the seismic moment</abstract><cop>Washington</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1029/2011GL049018</doi><tpages>4</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Geophysical research letters, 2011-09, Vol.38 (7), p.n/a |
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| language | eng |
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| source | Wiley Free Content; Wiley-Blackwell AGU Digital Library; Wiley Online Library Journals Frontfile Complete; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals |
| subjects | 2011 Tohoku-Oki earhquake Boundaries coseisimic gravity change Earthquakes Geodetic surveys Geodetics GRACE GRACE (experiment) Gravimetry Gravitation Gravity Marine Mathematical analysis Movements Plate boundaries Rock deformation satellite geodesy Satellites Seismic activity Seismic engineering Seismic phenomena Seismology Space time-variable gravity |
| title | Coseismic gravity changes of the 2011 Tohoku-Oki earthquake from satellite gravimetry |
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