Inversion of high-rate (1 sps) GPS data for rupture process of the 11 March 2011 Tohoku earthquake (Mw 9.1)
The space‐time fault displacement history of the 11 March 2011 Tohoku (Mw 9.1) megathrust earthquake is obtained by least‐squares inversion of high‐rate (1 sample per second) GPS ground motions recorded in Japan. Complete near‐source time‐varying and static ground motions for periods ≥25 s are fit i...
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| Veröffentlicht in: | Geophysical research letters 2011-04, Vol.38 (7), p.n/a |
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| creator | Yue, H. Lay, T. |
| description | The space‐time fault displacement history of the 11 March 2011 Tohoku (Mw 9.1) megathrust earthquake is obtained by least‐squares inversion of high‐rate (1 sample per second) GPS ground motions recorded in Japan. Complete near‐source time‐varying and static ground motions for periods ≥25 s are fit in the inversion using a normal mode formalism to compute the Green functions. The basic rupture pattern is stable for various choices of model parameters and solution smoothing, and excellent fits to the complete seismo‐geodetic ground motions are obtained. The preferred solution has concentrations of slip near the trench and hypocenter, with sub‐fault source time function durations of ∼30–70 s and maximum slip of ∼60 m. Down‐dip slip spreads over a wider area with smaller maximum slip ( |
| doi_str_mv | 10.1029/2011GL048700 |
| format | Article |
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Key Points
Inverts high‐rate GPS ground motions for finite‐faulting slip
Obtains a robust slip model for the 2011 Tohoku earthquake
Presents new inversion procedure for seismo‐geodetic inversion</description><identifier>ISSN: 0094-8276</identifier><identifier>EISSN: 1944-8007</identifier><identifier>DOI: 10.1029/2011GL048700</identifier><language>eng</language><publisher>Washington: Blackwell Publishing Ltd</publisher><subject>Continental dynamics ; Earthquakes ; Geodetics ; Global positioning systems ; GPS ; Ground motion ; high-rate GPS ; Plate tectonics ; Rock deformation ; Seismic activity ; Seismology ; source inversion ; Tohoku earthquake</subject><ispartof>Geophysical research letters, 2011-04, 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-c4115-173fb83113b7b0c98af2806002465fc10c60fb9220877416d22b259419c1edc23</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%2F2011GL048700$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1029%2F2011GL048700$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,776,780,1411,1427,11494,27903,27904,45553,45554,46387,46446,46811,46870</link.rule.ids></links><search><creatorcontrib>Yue, H.</creatorcontrib><creatorcontrib>Lay, T.</creatorcontrib><title>Inversion of high-rate (1 sps) GPS data for rupture process of the 11 March 2011 Tohoku earthquake (Mw 9.1)</title><title>Geophysical research letters</title><addtitle>Geophys. Res. Lett</addtitle><description>The space‐time fault displacement history of the 11 March 2011 Tohoku (Mw 9.1) megathrust earthquake is obtained by least‐squares inversion of high‐rate (1 sample per second) GPS ground motions recorded in Japan. Complete near‐source time‐varying and static ground motions for periods ≥25 s are fit in the inversion using a normal mode formalism to compute the Green functions. The basic rupture pattern is stable for various choices of model parameters and solution smoothing, and excellent fits to the complete seismo‐geodetic ground motions are obtained. The preferred solution has concentrations of slip near the trench and hypocenter, with sub‐fault source time function durations of ∼30–70 s and maximum slip of ∼60 m. Down‐dip slip spreads over a wider area with smaller maximum slip (<∼10–15 m). Inversion of the high‐rate GPS data exploits both the timing and total displacement information in the ground motions, yielding stable estimates of the seismic moment (∼4.8 × 1022 Nm; Mw = 9.1) and slip distribution.
Key Points
Inverts high‐rate GPS ground motions for finite‐faulting slip
Obtains a robust slip model for the 2011 Tohoku earthquake
Presents new inversion procedure for seismo‐geodetic inversion</description><subject>Continental dynamics</subject><subject>Earthquakes</subject><subject>Geodetics</subject><subject>Global positioning systems</subject><subject>GPS</subject><subject>Ground motion</subject><subject>high-rate GPS</subject><subject>Plate tectonics</subject><subject>Rock deformation</subject><subject>Seismic activity</subject><subject>Seismology</subject><subject>source inversion</subject><subject>Tohoku earthquake</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>ABUWG</sourceid><sourceid>AFKRA</sourceid><sourceid>AZQEC</sourceid><sourceid>BENPR</sourceid><sourceid>CCPQU</sourceid><sourceid>DWQXO</sourceid><sourceid>GNUQQ</sourceid><sourceid>GUQSH</sourceid><sourceid>M2O</sourceid><recordid>eNpNkM1OwzAQhC0EEqVw4wEscaGHlF07ieMjKhAKLb9FHC0ndUja0qR2Qunbk6oIcdo5zDezGkJOEfoITF4wQIxH4EcCYI90UPq-FwGIfdIBkK1mIjwkR87NAIADxw6ZD5dfxrqiXNIyo3nxkXtW14aeI3WV69H46ZVOda1pVlpqm6purKGVLVPj3Jaoc0MR6VjbNKfbfjop83LeUKNtna8aPW-zxmsq-9g7JgeZXjhz8nu75O3mejK49UaP8XBwOfJSHzHwUPAsiTgiT0QCqYx0xiIIAZgfBlmKkIaQJZIxiITwMZwylrBA-ihTNNOU8S452-W2f64a42o1Kxu7bCsVtgVCSmRB62I717pYmI2qbPGp7UYhqO2W6v-WKn4ZscjnW8jbQYWrzfcfpO1chYKLQL0_xOrqOQrHdyFT9_wHwMtyDw</recordid><startdate>201104</startdate><enddate>201104</enddate><creator>Yue, H.</creator><creator>Lay, T.</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></search><sort><creationdate>201104</creationdate><title>Inversion of high-rate (1 sps) GPS data for rupture process of the 11 March 2011 Tohoku earthquake (Mw 9.1)</title><author>Yue, H. ; Lay, T.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c4115-173fb83113b7b0c98af2806002465fc10c60fb9220877416d22b259419c1edc23</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Continental dynamics</topic><topic>Earthquakes</topic><topic>Geodetics</topic><topic>Global positioning systems</topic><topic>GPS</topic><topic>Ground motion</topic><topic>high-rate GPS</topic><topic>Plate tectonics</topic><topic>Rock deformation</topic><topic>Seismic activity</topic><topic>Seismology</topic><topic>source inversion</topic><topic>Tohoku earthquake</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Yue, H.</creatorcontrib><creatorcontrib>Lay, T.</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><jtitle>Geophysical research letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Yue, H.</au><au>Lay, T.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Inversion of high-rate (1 sps) GPS data for rupture process of the 11 March 2011 Tohoku earthquake (Mw 9.1)</atitle><jtitle>Geophysical research letters</jtitle><addtitle>Geophys. Res. Lett</addtitle><date>2011-04</date><risdate>2011</risdate><volume>38</volume><issue>7</issue><epage>n/a</epage><issn>0094-8276</issn><eissn>1944-8007</eissn><abstract>The space‐time fault displacement history of the 11 March 2011 Tohoku (Mw 9.1) megathrust earthquake is obtained by least‐squares inversion of high‐rate (1 sample per second) GPS ground motions recorded in Japan. Complete near‐source time‐varying and static ground motions for periods ≥25 s are fit in the inversion using a normal mode formalism to compute the Green functions. The basic rupture pattern is stable for various choices of model parameters and solution smoothing, and excellent fits to the complete seismo‐geodetic ground motions are obtained. The preferred solution has concentrations of slip near the trench and hypocenter, with sub‐fault source time function durations of ∼30–70 s and maximum slip of ∼60 m. Down‐dip slip spreads over a wider area with smaller maximum slip (<∼10–15 m). Inversion of the high‐rate GPS data exploits both the timing and total displacement information in the ground motions, yielding stable estimates of the seismic moment (∼4.8 × 1022 Nm; Mw = 9.1) and slip distribution.
Key Points
Inverts high‐rate GPS ground motions for finite‐faulting slip
Obtains a robust slip model for the 2011 Tohoku earthquake
Presents new inversion procedure for seismo‐geodetic inversion</abstract><cop>Washington</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1029/2011GL048700</doi><tpages>6</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | Continental dynamics Earthquakes Geodetics Global positioning systems GPS Ground motion high-rate GPS Plate tectonics Rock deformation Seismic activity Seismology source inversion Tohoku earthquake |
| title | Inversion of high-rate (1 sps) GPS data for rupture process of the 11 March 2011 Tohoku earthquake (Mw 9.1) |
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