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Detailed Reference Information |
Hildebrand, J.A., Dorman, L.M., Hammer, P.T.C., Schreiner, A.E. and Cornuelle, B.D. (1989). Seismic tomography of Jasper Seamount. Geophysical Research Letters 16: doi: 10.1029/89GL01698. issn: 0094-8276. |
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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. ¿ American Geophysical Union 1989 |
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Abstract |
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Keywords
Marine Geology and Geophysics, Seafloor morphology and bottom photography, Exploration Geophysics, Seismic methods, Information Related to Geographic Region, Pacific Ocean |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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