Mantle plumes beneath the South Pacific superswell revealed by finite frequency P tomography using regional seafloor and island data
We present a new tomographic image beneath the South Pacific superswell, using finite frequency P wave travel time tomography with global and regional data. The regional stations include broadband ocean‐bottom seismograph stations. The tomographic image shows slow anomalies of 200‐300 km in diameter...
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| Veröffentlicht in: | Geophysical research letters 2016-11, Vol.43 (22), p.11,628-11,634 |
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| creator | Obayashi, M. Yoshimitsu, J. Sugioka, H. Ito, A. Isse, T. Shiobara, H. Reymond, D. Suetsugu, D. |
| description | We present a new tomographic image beneath the South Pacific superswell, using finite frequency P wave travel time tomography with global and regional data. The regional stations include broadband ocean‐bottom seismograph stations. The tomographic image shows slow anomalies of 200‐300 km in diameter beneath most hot spots in the studied region, extending continuously from the shallow upper mantle to 400 km depth. Narrow and weak slow anomalies are detected at depths of 500–1000 km, connecting the upper mantle slow anomalies with large‐scale slow anomalies with lateral dimension of 1000–2000 km prevailing below 1000 km depth down to the core‐mantle boundary. There are two slow anomalies around the Society hot spot at depths shallower than 400 km, which both emerge from the same slow anomaly at 500 km depth. One of them is located beneath the Society hot spot and the other underlies 500 km east of the Society hot spot, where no volcanism is observed.
Key Points
P wave tomography shows localized slow anomalies in the upper 400 km of the mantle beneath most of the South Pacific hot spots
Large‐scale slow anomalies extend from a depth of 1000 km to the core‐mantle boundary
A narrow and weak slow anomaly found at 500‐1000 km depths connects upper mantle slow anomalies with large‐scale anomalies below 1000 km |
| doi_str_mv | 10.1002/2016GL070793 |
| format | Article |
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Key Points
P wave tomography shows localized slow anomalies in the upper 400 km of the mantle beneath most of the South Pacific hot spots
Large‐scale slow anomalies extend from a depth of 1000 km to the core‐mantle boundary
A narrow and weak slow anomaly found at 500‐1000 km depths connects upper mantle slow anomalies with large‐scale anomalies below 1000 km</description><identifier>ISSN: 0094-8276</identifier><identifier>EISSN: 1944-8007</identifier><identifier>DOI: 10.1002/2016GL070793</identifier><language>eng</language><publisher>Washington: John Wiley & Sons, Inc</publisher><subject>Anomalies ; Broadband ; broadband ocean bottom seismometer ; Connecting ; Continuous fibers ; Core-mantle boundary ; Data ; Depth ; French Polynesia ; Geophysics ; hot spot ; Hot spots ; Hot spots (geology) ; Magnesium composites ; Mantle ; mantle plume ; Mantle plumes ; Marine ; Mathematical analysis ; Ocean bottom ; Ocean floor ; P wave tomography ; Seismology ; South Pacific superswell ; Spots ; Stations ; Tomography ; Travel ; Travel time ; Upper mantle ; Volcanic activity ; Volcanism</subject><ispartof>Geophysical research letters, 2016-11, Vol.43 (22), p.11,628-11,634</ispartof><rights>2016. American Geophysical Union. All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a4890-f7ef2b5d2a4ec30209239aaad20ced5fa7e613fa0ddd45444ffb1c458c89c49b3</citedby><cites>FETCH-LOGICAL-a4890-f7ef2b5d2a4ec30209239aaad20ced5fa7e613fa0ddd45444ffb1c458c89c49b3</cites><orcidid>0000-0002-3319-6383 ; 0000-0002-1906-5192 ; 0000-0003-2739-572X ; 0000-0003-4026-2649 ; 0000-0001-9913-3329 ; 0000-0003-1883-4049</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2F2016GL070793$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2F2016GL070793$$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>Obayashi, M.</creatorcontrib><creatorcontrib>Yoshimitsu, J.</creatorcontrib><creatorcontrib>Sugioka, H.</creatorcontrib><creatorcontrib>Ito, A.</creatorcontrib><creatorcontrib>Isse, T.</creatorcontrib><creatorcontrib>Shiobara, H.</creatorcontrib><creatorcontrib>Reymond, D.</creatorcontrib><creatorcontrib>Suetsugu, D.</creatorcontrib><title>Mantle plumes beneath the South Pacific superswell revealed by finite frequency P tomography using regional seafloor and island data</title><title>Geophysical research letters</title><description>We present a new tomographic image beneath the South Pacific superswell, using finite frequency P wave travel time tomography with global and regional data. The regional stations include broadband ocean‐bottom seismograph stations. The tomographic image shows slow anomalies of 200‐300 km in diameter beneath most hot spots in the studied region, extending continuously from the shallow upper mantle to 400 km depth. Narrow and weak slow anomalies are detected at depths of 500–1000 km, connecting the upper mantle slow anomalies with large‐scale slow anomalies with lateral dimension of 1000–2000 km prevailing below 1000 km depth down to the core‐mantle boundary. There are two slow anomalies around the Society hot spot at depths shallower than 400 km, which both emerge from the same slow anomaly at 500 km depth. One of them is located beneath the Society hot spot and the other underlies 500 km east of the Society hot spot, where no volcanism is observed.
Key Points
P wave tomography shows localized slow anomalies in the upper 400 km of the mantle beneath most of the South Pacific hot spots
Large‐scale slow anomalies extend from a depth of 1000 km to the core‐mantle boundary
A narrow and weak slow anomaly found at 500‐1000 km depths connects upper mantle slow anomalies with large‐scale anomalies below 1000 km</description><subject>Anomalies</subject><subject>Broadband</subject><subject>broadband ocean bottom seismometer</subject><subject>Connecting</subject><subject>Continuous fibers</subject><subject>Core-mantle boundary</subject><subject>Data</subject><subject>Depth</subject><subject>French Polynesia</subject><subject>Geophysics</subject><subject>hot spot</subject><subject>Hot spots</subject><subject>Hot spots (geology)</subject><subject>Magnesium composites</subject><subject>Mantle</subject><subject>mantle plume</subject><subject>Mantle plumes</subject><subject>Marine</subject><subject>Mathematical analysis</subject><subject>Ocean bottom</subject><subject>Ocean floor</subject><subject>P wave tomography</subject><subject>Seismology</subject><subject>South Pacific superswell</subject><subject>Spots</subject><subject>Stations</subject><subject>Tomography</subject><subject>Travel</subject><subject>Travel time</subject><subject>Upper mantle</subject><subject>Volcanic activity</subject><subject>Volcanism</subject><issn>0094-8276</issn><issn>1944-8007</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2016</creationdate><recordtype>article</recordtype><recordid>eNqN0T2P1DAQBuAIgcRy0PEDLNFQsMf4I7FdohMsSIs48VFHE2e865M3CXbCKT0_HJ_2CkRxopopnhnN6K2qlxwuOYB4K4A3uz1o0FY-qjbcKrU1APpxtQGwpRe6eVo9y_kGACRIvql-f8ZhjsSmuJwos44GwvnI5iOxb-NSumt0wQfH8jJRyrcUI0v0izBSz7qV-TCEmZhP9HOhwa3sms3jaTwknI4rW3IYDsUfwjhgZJnQx3FMDIeehRzvSo8zPq-eeIyZXtzXi-rHh_ffrz5u9192n67e7beojIWt1-RFV_cCFTkJAqyQFhF7AY762qOmhkuP0Pe9qpVS3nfcqdo4Y52ynbyoXp_3Tmks5-a5PYXsyks40LjklpumzGkO-j9oXYPWjZKFvvqH3oxLKv8WZbmwxgjZPKiMMo1RXNqi3pyVS2POiXw7pXDCtLYc2ruM278zLlyc-W2ItD5o293XfV2Lkvofvu2ofg</recordid><startdate>20161128</startdate><enddate>20161128</enddate><creator>Obayashi, M.</creator><creator>Yoshimitsu, J.</creator><creator>Sugioka, H.</creator><creator>Ito, A.</creator><creator>Isse, T.</creator><creator>Shiobara, H.</creator><creator>Reymond, D.</creator><creator>Suetsugu, D.</creator><general>John Wiley & Sons, Inc</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7TG</scope><scope>7TN</scope><scope>8FD</scope><scope>F1W</scope><scope>FR3</scope><scope>H8D</scope><scope>H96</scope><scope>KL.</scope><scope>KR7</scope><scope>L.G</scope><scope>L7M</scope><orcidid>https://orcid.org/0000-0002-3319-6383</orcidid><orcidid>https://orcid.org/0000-0002-1906-5192</orcidid><orcidid>https://orcid.org/0000-0003-2739-572X</orcidid><orcidid>https://orcid.org/0000-0003-4026-2649</orcidid><orcidid>https://orcid.org/0000-0001-9913-3329</orcidid><orcidid>https://orcid.org/0000-0003-1883-4049</orcidid></search><sort><creationdate>20161128</creationdate><title>Mantle plumes beneath the South Pacific superswell revealed by finite frequency P tomography using regional seafloor and island data</title><author>Obayashi, M. ; Yoshimitsu, J. ; Sugioka, H. ; Ito, A. ; Isse, T. ; Shiobara, H. ; Reymond, D. ; Suetsugu, D.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a4890-f7ef2b5d2a4ec30209239aaad20ced5fa7e613fa0ddd45444ffb1c458c89c49b3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2016</creationdate><topic>Anomalies</topic><topic>Broadband</topic><topic>broadband ocean bottom seismometer</topic><topic>Connecting</topic><topic>Continuous fibers</topic><topic>Core-mantle boundary</topic><topic>Data</topic><topic>Depth</topic><topic>French Polynesia</topic><topic>Geophysics</topic><topic>hot spot</topic><topic>Hot spots</topic><topic>Hot spots (geology)</topic><topic>Magnesium composites</topic><topic>Mantle</topic><topic>mantle plume</topic><topic>Mantle plumes</topic><topic>Marine</topic><topic>Mathematical analysis</topic><topic>Ocean bottom</topic><topic>Ocean floor</topic><topic>P wave tomography</topic><topic>Seismology</topic><topic>South Pacific superswell</topic><topic>Spots</topic><topic>Stations</topic><topic>Tomography</topic><topic>Travel</topic><topic>Travel time</topic><topic>Upper mantle</topic><topic>Volcanic activity</topic><topic>Volcanism</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Obayashi, M.</creatorcontrib><creatorcontrib>Yoshimitsu, J.</creatorcontrib><creatorcontrib>Sugioka, H.</creatorcontrib><creatorcontrib>Ito, A.</creatorcontrib><creatorcontrib>Isse, T.</creatorcontrib><creatorcontrib>Shiobara, H.</creatorcontrib><creatorcontrib>Reymond, D.</creatorcontrib><creatorcontrib>Suetsugu, D.</creatorcontrib><collection>CrossRef</collection><collection>Meteorological & Geoastrophysical Abstracts</collection><collection>Oceanic Abstracts</collection><collection>Technology Research Database</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Meteorological & Geoastrophysical Abstracts - Academic</collection><collection>Civil Engineering Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Geophysical research letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Obayashi, M.</au><au>Yoshimitsu, J.</au><au>Sugioka, H.</au><au>Ito, A.</au><au>Isse, T.</au><au>Shiobara, H.</au><au>Reymond, D.</au><au>Suetsugu, D.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Mantle plumes beneath the South Pacific superswell revealed by finite frequency P tomography using regional seafloor and island data</atitle><jtitle>Geophysical research letters</jtitle><date>2016-11-28</date><risdate>2016</risdate><volume>43</volume><issue>22</issue><spage>11,628</spage><epage>11,634</epage><pages>11,628-11,634</pages><issn>0094-8276</issn><eissn>1944-8007</eissn><abstract>We present a new tomographic image beneath the South Pacific superswell, using finite frequency P wave travel time tomography with global and regional data. The regional stations include broadband ocean‐bottom seismograph stations. The tomographic image shows slow anomalies of 200‐300 km in diameter beneath most hot spots in the studied region, extending continuously from the shallow upper mantle to 400 km depth. Narrow and weak slow anomalies are detected at depths of 500–1000 km, connecting the upper mantle slow anomalies with large‐scale slow anomalies with lateral dimension of 1000–2000 km prevailing below 1000 km depth down to the core‐mantle boundary. There are two slow anomalies around the Society hot spot at depths shallower than 400 km, which both emerge from the same slow anomaly at 500 km depth. One of them is located beneath the Society hot spot and the other underlies 500 km east of the Society hot spot, where no volcanism is observed.
Key Points
P wave tomography shows localized slow anomalies in the upper 400 km of the mantle beneath most of the South Pacific hot spots
Large‐scale slow anomalies extend from a depth of 1000 km to the core‐mantle boundary
A narrow and weak slow anomaly found at 500‐1000 km depths connects upper mantle slow anomalies with large‐scale anomalies below 1000 km</abstract><cop>Washington</cop><pub>John Wiley & Sons, Inc</pub><doi>10.1002/2016GL070793</doi><tpages>7</tpages><orcidid>https://orcid.org/0000-0002-3319-6383</orcidid><orcidid>https://orcid.org/0000-0002-1906-5192</orcidid><orcidid>https://orcid.org/0000-0003-2739-572X</orcidid><orcidid>https://orcid.org/0000-0003-4026-2649</orcidid><orcidid>https://orcid.org/0000-0001-9913-3329</orcidid><orcidid>https://orcid.org/0000-0003-1883-4049</orcidid></addata></record> |
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| ispartof | Geophysical research letters, 2016-11, Vol.43 (22), p.11,628-11,634 |
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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 | Anomalies Broadband broadband ocean bottom seismometer Connecting Continuous fibers Core-mantle boundary Data Depth French Polynesia Geophysics hot spot Hot spots Hot spots (geology) Magnesium composites Mantle mantle plume Mantle plumes Marine Mathematical analysis Ocean bottom Ocean floor P wave tomography Seismology South Pacific superswell Spots Stations Tomography Travel Travel time Upper mantle Volcanic activity Volcanism |
| title | Mantle plumes beneath the South Pacific superswell revealed by finite frequency P tomography using regional seafloor and island data |
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