Seismic tomography of Jasper Seamount
A vertical section of the interior structure of Jasper Seamount was modeled using a spectral tomographic inversion of P wave travel times. An array of ocean bottom seismographs (OBSs) deployed over the seamount detected the arrivals from a series of ocean bottom shots. A reference velocity model rev...
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| Veröffentlicht in: | Geophysical research letters 1989-12, Vol.16 (12), p.1355-1358 |
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| container_end_page | 1358 |
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| container_issue | 12 |
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| container_title | Geophysical research letters |
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| creator | Hildebrand, J. A. Dorman, L. M. Hammer, P. T. C. Schreiner, A. E. Cornuelle, B. D. |
| description | A vertical section of the interior structure of Jasper Seamount was modeled using a spectral tomographic inversion of P wave travel times. An array of ocean bottom seismographs (OBSs) deployed over the seamount detected the arrivals from a series of ocean bottom shots. A reference velocity model reveals that average compressional velocities within the seamount are similar to those found within Kilauea and are consistently slower than velocities at equivalent depths in typical oceanic crust. This suggests Jasper Seamount has a high average porosity. Perturbations from the reference model were imaged by tomographic inversion. A high velocity zone within the northwest flank of the seamount may result from dikes associated with a radial rift or from a shallow solidified magma reservoir. A low velocity summit may result from shallow, explosive eruptions. The tomographic model is consistent with the results of gravity, magnetic and dredging analyses. |
| doi_str_mv | 10.1029/GL016i012p01355 |
| format | Article |
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A. ; Dorman, L. M. ; Hammer, P. T. C. ; Schreiner, A. E. ; Cornuelle, B. D.</creator><creatorcontrib>Hildebrand, J. A. ; Dorman, L. M. ; Hammer, P. T. C. ; Schreiner, A. E. ; Cornuelle, B. D.</creatorcontrib><description>A vertical section of the interior structure of Jasper Seamount was modeled using a spectral tomographic inversion of P wave travel times. An array of ocean bottom seismographs (OBSs) deployed over the seamount detected the arrivals from a series of ocean bottom shots. A reference velocity model reveals that average compressional velocities within the seamount are similar to those found within Kilauea and are consistently slower than velocities at equivalent depths in typical oceanic crust. This suggests Jasper Seamount has a high average porosity. Perturbations from the reference model were imaged by tomographic inversion. A high velocity zone within the northwest flank of the seamount may result from dikes associated with a radial rift or from a shallow solidified magma reservoir. A low velocity summit may result from shallow, explosive eruptions. 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A high velocity zone within the northwest flank of the seamount may result from dikes associated with a radial rift or from a shallow solidified magma reservoir. A low velocity summit may result from shallow, explosive eruptions. The tomographic model is consistent with the results of gravity, magnetic and dredging analyses.</description><subject>Arrays</subject><subject>Geophysics</subject><subject>Gravitation</subject><subject>Inversions</subject><subject>Ocean bottom</subject><subject>Reservoirs</subject><subject>Seamounts</subject><subject>Shot</subject><issn>0094-8276</issn><issn>1944-8007</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1989</creationdate><recordtype>article</recordtype><recordid>eNqFkDtPwzAUhS0EEqUws2ZBYgm9tq8fGVEFARQBojxGK3EcCCQk2Kmg_56gIgaWTucO33elcwg5pHBCgSWzNAMqa6CsB8qF2CITmiDGGkBtkwlAMt5MyV2yF8IrAHDgdEKOFq4ObW2joWu7Z5_3L6uoq6KrPPTORwuXt93yfdgnO1XeBHfwm1PycH52P7-Is5v0cn6axTlSCrFTzFrmioRxoIVQhdUKdVmhTiohpYCi4gyBl6WyJUeLHJiTmqtCSUrR8ik5Xv_tffexdGEwbR2sa5r83XXLYKhExjRH1JtRwRDH1jIZ0dkatb4LwbvK9L5uc78yFMzPdubfdqOBa-OzbtxqE27SuwyFgFGL11odBvf1p-X-zUjFlTBP16nht1o9IipD-TdI430q</recordid><startdate>198912</startdate><enddate>198912</enddate><creator>Hildebrand, J. A.</creator><creator>Dorman, L. M.</creator><creator>Hammer, P. T. C.</creator><creator>Schreiner, A. E.</creator><creator>Cornuelle, B. D.</creator><general>Blackwell Publishing Ltd</general><scope>BSCLL</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7TN</scope><scope>F1W</scope><scope>H96</scope><scope>L.G</scope><scope>8FD</scope><scope>FR3</scope><scope>H8D</scope><scope>KR7</scope><scope>L7M</scope></search><sort><creationdate>198912</creationdate><title>Seismic tomography of Jasper Seamount</title><author>Hildebrand, J. A. ; Dorman, L. M. ; Hammer, P. T. C. ; Schreiner, A. E. ; Cornuelle, B. 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D.</creatorcontrib><collection>Istex</collection><collection>CrossRef</collection><collection>Oceanic Abstracts</collection><collection>ASFA: Aquatic Sciences and Fisheries Abstracts</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) 2: Ocean Technology, Policy & Non-Living Resources</collection><collection>Aquatic Science & Fisheries Abstracts (ASFA) Professional</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Aerospace Database</collection><collection>Civil Engineering Abstracts</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>Hildebrand, J. A.</au><au>Dorman, L. M.</au><au>Hammer, P. T. C.</au><au>Schreiner, A. E.</au><au>Cornuelle, B. D.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Seismic tomography of Jasper Seamount</atitle><jtitle>Geophysical research letters</jtitle><addtitle>Geophys. Res. Lett</addtitle><date>1989-12</date><risdate>1989</risdate><volume>16</volume><issue>12</issue><spage>1355</spage><epage>1358</epage><pages>1355-1358</pages><issn>0094-8276</issn><eissn>1944-8007</eissn><abstract>A vertical section of the interior structure of Jasper Seamount was modeled using a spectral tomographic inversion of P wave travel times. An array of ocean bottom seismographs (OBSs) deployed over the seamount detected the arrivals from a series of ocean bottom shots. A reference velocity model reveals that average compressional velocities within the seamount are similar to those found within Kilauea and are consistently slower than velocities at equivalent depths in typical oceanic crust. This suggests Jasper Seamount has a high average porosity. Perturbations from the reference model were imaged by tomographic inversion. A high velocity zone within the northwest flank of the seamount may result from dikes associated with a radial rift or from a shallow solidified magma reservoir. A low velocity summit may result from shallow, explosive eruptions. The tomographic model is consistent with the results of gravity, magnetic and dredging analyses.</abstract><pub>Blackwell Publishing Ltd</pub><doi>10.1029/GL016i012p01355</doi><tpages>4</tpages></addata></record> |
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| ispartof | Geophysical research letters, 1989-12, Vol.16 (12), p.1355-1358 |
| issn | 0094-8276 1944-8007 |
| language | eng |
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| source | Access via Wiley Online Library |
| subjects | Arrays Geophysics Gravitation Inversions Ocean bottom Reservoirs Seamounts Shot |
| title | Seismic tomography of Jasper Seamount |
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