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首页> 外文会议>Geothermal Resources Council Annual Meeting >Interaction of Shallow and Deep Geothermal Reservoirs at Coso, Eastern California, as Inferred from 3-D Seismic Velocity Models and Seismicity
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Interaction of Shallow and Deep Geothermal Reservoirs at Coso, Eastern California, as Inferred from 3-D Seismic Velocity Models and Seismicity

机译：浅层和深层地热水库在COSO，东部加州，从3-D地震速度模型和地震性推断出来

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We inverted P and S-P arrival times from 11,500 earth-quakes that occurred in central eastern California, to determine the 3-D Vp and Vp/Vs velocity structures to depths of 25 km. The abundant seismicity is scattered across the region with spatial clusters along the crest of the Sierra Nevada and in the Indian Wells Valley and Coso region. The seismicity appears to be related to broad regional crustal extension superimposed on right lateral shear as well as localized movement of crustal fluids in the Coso area. Layered zones of both high and low Vp, Vs, and Vp/Vs are present beneath the Coso area. These zones consists of the geothermal area at 0 to 3 km depth, a zone of 4-6percent geothermal fluids of H_(2)O extending from 6 to 11 km depth, and a possible magma chamber in the depth range of 11 to 16 km. The abundant seismicity in the 2 to 8 km depth range may be induced by fluid flow between the deeper geothermal reservoir and the surface geothermal area. The presence of a capped geothermal H_(2)O zone and a deeper magma chamber possibly feeding small successively shallower chambers, suggests two different sources providing heat to the surface geothermal area.
机译：我们倒置了P和S-P抵达时间，从11,500个地区发生在加利福尼亚州中央东部发生的11,500个地震，以确定3-D vp和vp / vs速度结构，深度为25公里。丰富的地震性散落在整个地区，在塞拉尼亚达和印度井谷和COSO地区的山顶，沿着空间簇。地震性似乎与宽度横向剪切叠加的宽区域地壳延伸有关，以及COSO区域中的地壳流体的局部运动。在COSO区域下方存在高和低VP，VS和VP / VS的分层区域。这些区域由0至3km深度的地热面积组成，从6至11km深度延伸的H_（2）°O的4-6％的地热流体区域，并且可能在11至16 km的深度范围内的可能的岩浆室。 2至8km深度范围内的丰富地震性可以通过更深的地热储层和地表地热区域之间的流体流动引起。盖地热H_（2）o区的存在和深层岩浆室可能喂养小的连续较浅的腔室，表明两个不同的来源为地表地热区域提供热量。

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