Magnetotelluric imaging of upper-crustal convection plumes beneath the Taupo Volcanic Zone, New Zealand
Broadband MT (magnetotelluric) data were recorded that form an array of measurements at the south‐eastern margin of the TVZ (Taupo Volcanic Zone), in the central North Island of New Zealand. These array data are used to investigate mechanisms by which the TVZ's extraordinarily high heat flux is...
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| Veröffentlicht in: | Geophysical research letters 2012-01, Vol.39 (2), p.n/a |
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| creator | Bertrand, E. A. Caldwell, T. G. Hill, G. J. Wallin, E. L. Bennie, S. L. Cozens, N. Onacha, S. A. Ryan, G. A. Walter, C. Zaino, A. Wameyo, P. |
| description | Broadband MT (magnetotelluric) data were recorded that form an array of measurements at the south‐eastern margin of the TVZ (Taupo Volcanic Zone), in the central North Island of New Zealand. These array data are used to investigate mechanisms by which the TVZ's extraordinarily high heat flux is transported to the surface. Taken together with seismological data, these MT data show compelling evidence that support a model of hydrothermal convection within the brittle (upper ∼6–7 km) part of the crust. Both 2‐D and 3‐D inversion models of these MT data show vertical low‐resistivity zones that connect surface geothermal fields to an inferred magmatic heat source that lies below the brittle‐ductile transition.
Key Points
2‐D and 3‐D resistivity models are generated from ~200 MT sites in the SE TVZ
Low‐resistivity plumes (3‐8km) connect geothermal fields to deep heat source
MT models support hydrothermal convection in the brittle crust |
| doi_str_mv | 10.1029/2011GL050177 |
| format | Article |
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Key Points
2‐D and 3‐D resistivity models are generated from ~200 MT sites in the SE TVZ
Low‐resistivity plumes (3‐8km) connect geothermal fields to deep heat source
MT models support hydrothermal convection in the brittle crust</description><identifier>ISSN: 0094-8276</identifier><identifier>EISSN: 1944-8007</identifier><identifier>DOI: 10.1029/2011GL050177</identifier><identifier>CODEN: GPRLAJ</identifier><language>eng</language><publisher>Washington, DC: Blackwell Publishing Ltd</publisher><subject>Arrays ; Broadband ; Convection ; Ductile brittle transition ; Earth sciences ; Earth, ocean, space ; Exact sciences and technology ; Geophysics ; geothermal ; Imaging ; Inversions ; Magnetism ; magnetotellurics ; Mineralogy ; Petrology ; Plate tectonics ; Seismic phenomena ; Taupo Volcanic Zone ; Three dimensional models</subject><ispartof>Geophysical research letters, 2012-01, Vol.39 (2), p.n/a</ispartof><rights>Copyright 2012 by the American Geophysical Union</rights><rights>2015 INIST-CNRS</rights><rights>Copyright 2012 by American Geophysical Union</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4721-36de2a3024a9f60e01fa017c6d4f478b81e0462c3f16feeecb10aed281f1c0d03</citedby><cites>FETCH-LOGICAL-c4721-36de2a3024a9f60e01fa017c6d4f478b81e0462c3f16feeecb10aed281f1c0d03</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1029%2F2011GL050177$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1029%2F2011GL050177$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,1433,11514,27924,27925,45574,45575,46409,46468,46833,46892</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=25969172$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Bertrand, E. A.</creatorcontrib><creatorcontrib>Caldwell, T. G.</creatorcontrib><creatorcontrib>Hill, G. J.</creatorcontrib><creatorcontrib>Wallin, E. L.</creatorcontrib><creatorcontrib>Bennie, S. L.</creatorcontrib><creatorcontrib>Cozens, N.</creatorcontrib><creatorcontrib>Onacha, S. A.</creatorcontrib><creatorcontrib>Ryan, G. A.</creatorcontrib><creatorcontrib>Walter, C.</creatorcontrib><creatorcontrib>Zaino, A.</creatorcontrib><creatorcontrib>Wameyo, P.</creatorcontrib><title>Magnetotelluric imaging of upper-crustal convection plumes beneath the Taupo Volcanic Zone, New Zealand</title><title>Geophysical research letters</title><addtitle>Geophys. Res. Lett</addtitle><description>Broadband MT (magnetotelluric) data were recorded that form an array of measurements at the south‐eastern margin of the TVZ (Taupo Volcanic Zone), in the central North Island of New Zealand. These array data are used to investigate mechanisms by which the TVZ's extraordinarily high heat flux is transported to the surface. Taken together with seismological data, these MT data show compelling evidence that support a model of hydrothermal convection within the brittle (upper ∼6–7 km) part of the crust. Both 2‐D and 3‐D inversion models of these MT data show vertical low‐resistivity zones that connect surface geothermal fields to an inferred magmatic heat source that lies below the brittle‐ductile transition.
Key Points
2‐D and 3‐D resistivity models are generated from ~200 MT sites in the SE TVZ
Low‐resistivity plumes (3‐8km) connect geothermal fields to deep heat source
MT models support hydrothermal convection in the brittle crust</description><subject>Arrays</subject><subject>Broadband</subject><subject>Convection</subject><subject>Ductile brittle transition</subject><subject>Earth sciences</subject><subject>Earth, ocean, space</subject><subject>Exact sciences and technology</subject><subject>Geophysics</subject><subject>geothermal</subject><subject>Imaging</subject><subject>Inversions</subject><subject>Magnetism</subject><subject>magnetotellurics</subject><subject>Mineralogy</subject><subject>Petrology</subject><subject>Plate tectonics</subject><subject>Seismic phenomena</subject><subject>Taupo Volcanic Zone</subject><subject>Three dimensional models</subject><issn>0094-8276</issn><issn>1944-8007</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2012</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>eNp9kE1rFTEUhoMoeG3d-QOCILjotOdkMl9LqfZauK0gVaGbkJs5uZ2am0yTGWv_vSm3FOmiq2TxvA_nfRl7h3CIILojAYjLFVSATfOCLbCTsmgBmpdsAdDlv2jq1-xNStcAUEKJC7Y50xtPU5jIuTkOhg9bvRn8hgfL53GkWJg4p0k7boL_Q2Yaguejm7eU-Jo86emKT1fEL_Q8Bv4zOKN9tlwGTwf8nG75JWmnfb_PXlntEr19ePfYj5MvF8dfi9W35enxp1VhZCOwKOuehC5BSN3ZGgjQ6tzG1L20smnXLRLIWpjSYm2JyKwRNPWiRYsGeij32Medd4zhZqY0qe2QTC6nPYU5KQSELnevZUbfP0Gvwxx9vk512FYCKokZOthBJoaUIlk1xjxRvMsmdT-6-n_0jH94cOpktLNRezOkx4yourrDRmRO7LjbwdHds061_L4SbSvubyl2oSFN9PcxpONvVTdlU6lf50tVnX2uuhORY-U_rXeeag</recordid><startdate>201201</startdate><enddate>201201</enddate><creator>Bertrand, E. 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A.</creator><creator>Walter, C.</creator><creator>Zaino, A.</creator><creator>Wameyo, P.</creator><general>Blackwell Publishing Ltd</general><general>American Geophysical Union</general><general>John Wiley & Sons, Inc</general><scope>BSCLL</scope><scope>IQODW</scope><scope>AAYXX</scope><scope>CITATION</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>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>201201</creationdate><title>Magnetotelluric imaging of upper-crustal convection plumes beneath the Taupo Volcanic Zone, New Zealand</title><author>Bertrand, E. A. ; Caldwell, T. G. ; Hill, G. J. ; Wallin, E. L. ; Bennie, S. L. ; Cozens, N. ; Onacha, S. A. ; Ryan, G. 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A.</au><au>Caldwell, T. G.</au><au>Hill, G. J.</au><au>Wallin, E. L.</au><au>Bennie, S. L.</au><au>Cozens, N.</au><au>Onacha, S. A.</au><au>Ryan, G. A.</au><au>Walter, C.</au><au>Zaino, A.</au><au>Wameyo, P.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Magnetotelluric imaging of upper-crustal convection plumes beneath the Taupo Volcanic Zone, New Zealand</atitle><jtitle>Geophysical research letters</jtitle><addtitle>Geophys. Res. Lett</addtitle><date>2012-01</date><risdate>2012</risdate><volume>39</volume><issue>2</issue><epage>n/a</epage><issn>0094-8276</issn><eissn>1944-8007</eissn><coden>GPRLAJ</coden><abstract>Broadband MT (magnetotelluric) data were recorded that form an array of measurements at the south‐eastern margin of the TVZ (Taupo Volcanic Zone), in the central North Island of New Zealand. These array data are used to investigate mechanisms by which the TVZ's extraordinarily high heat flux is transported to the surface. Taken together with seismological data, these MT data show compelling evidence that support a model of hydrothermal convection within the brittle (upper ∼6–7 km) part of the crust. Both 2‐D and 3‐D inversion models of these MT data show vertical low‐resistivity zones that connect surface geothermal fields to an inferred magmatic heat source that lies below the brittle‐ductile transition.
Key Points
2‐D and 3‐D resistivity models are generated from ~200 MT sites in the SE TVZ
Low‐resistivity plumes (3‐8km) connect geothermal fields to deep heat source
MT models support hydrothermal convection in the brittle crust</abstract><cop>Washington, DC</cop><pub>Blackwell Publishing Ltd</pub><doi>10.1029/2011GL050177</doi><tpages>6</tpages></addata></record> |
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| subjects | Arrays Broadband Convection Ductile brittle transition Earth sciences Earth, ocean, space Exact sciences and technology Geophysics geothermal Imaging Inversions Magnetism magnetotellurics Mineralogy Petrology Plate tectonics Seismic phenomena Taupo Volcanic Zone Three dimensional models |
| title | Magnetotelluric imaging of upper-crustal convection plumes beneath the Taupo Volcanic Zone, New Zealand |
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