Evidence from Teleseismic P-Wave Observations for a Low Velocity Body under the Roosevelt Hot Springs Geothermal Area, Utah | |||
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| Authors: | Robinson, R.; Iyer, H. M. | ||
| Keywords: | Geophysics; Teleseismic; USA; Utah; Roosevelt Hot Springs; P Wave; Array; Ray Tracing; 3-D Inversion; Low Velocity; Mineral Mountain; USGS | ||
| Conference: | Geothermal Resources Council Transactions | Session: | Exploration; Geophysical surveys; Teleseismic surveys |
| Year: | 1979 | Language: | English |
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| Abstract: | Teleseismic P-wave delays were measured in the region of the Roosevelt Hot Springs geothermal area, Utah, using a closely spaced array of 15 seismographs. Average relative delay show a well defined pattern of azimuthal variation of up to 0.3 sec. Interpretation of the data using ray tracing an three dimensional inversion techniques shows the presence of a clearly defined low velocity region extending from a depth of 10 km into the upper mantle, centered under the Mineral Mountains. Signal shape variations observed at some of the stations may be due to diffraction around a smaller low velocity body at a depth of 5 km or less. | ||
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