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The highest subsidence rates are measured at the Geysers Geothermal Field within the Clear Lake Volcanic Field in northern California. The 78 square kilometer (30 sq mi) developed area produces 1,500 megawatts (MW) of electricity from a vapor-dominated reservoir within fractured sandstone that is capped by a zone of rock filled with geothermal minerals at the top and heated by magma below. The Clear Lake volcanic field is one of several in California and Nevada that are monitored by HVO's sister California Volcano Observatory (CalVO; volcanoes.usgs.gov...). CalVO also monitors the Long Valley caldera, in which the Casa Diablo geothermal development (40 MW) is located; the Salton Buttes volcano, which includes the Imperial Valley geothermal field (>300 MW); and the Coso Volcanic Field, where a 270 MW geothermal development is located. As volcanic activity waxes and wanes, each of these areas exhibits its own deformation and seismicity. For example, the Long Valley caldera has experienced several episodes of heightened unrest, including earthquake swarms, ground uplift, and volcanic gas emissions during the past several decades. Thus, CalVO watches this area closely. The subsidence related to geothermal development must be documented carefully to separate the effects of volcanic activity from those due to drilling and energy production.
Originally posted by cavalryscout
reply to post by sylent6
I said I was just kidding.
I hope all of the residents of California are safe and warm and the sandman brings them sweet dreams. (jeesh)
Originally posted by freedomSlave
Are those recent if they are I wonder if they could be related to this article from October 4
The highest subsidence rates are measured at the Geysers Geothermal Field within the Clear Lake Volcanic Field in northern California. The 78 square kilometer (30 sq mi) developed area produces 1,500 megawatts (MW) of electricity from a vapor-dominated reservoir within fractured sandstone that is capped by a zone of rock filled with geothermal minerals at the top and heated by magma below. The Clear Lake volcanic field is one of several in California and Nevada that are monitored by HVO's sister California Volcano Observatory (CalVO; volcanoes.usgs.gov...). CalVO also monitors the Long Valley caldera, in which the Casa Diablo geothermal development (40 MW) is located; the Salton Buttes volcano, which includes the Imperial Valley geothermal field (>300 MW); and the Coso Volcanic Field, where a 270 MW geothermal development is located. As volcanic activity waxes and wanes, each of these areas exhibits its own deformation and seismicity. For example, the Long Valley caldera has experienced several episodes of heightened unrest, including earthquake swarms, ground uplift, and volcanic gas emissions during the past several decades. Thus, CalVO watches this area closely. The subsidence related to geothermal development must be documented carefully to separate the effects of volcanic activity from those due to drilling and energy production.
HVO volcano watch