Recently, Hawaiian Volcano Observatory scientist’s have been asked if Hawaii Island’s geothermal development causes subsidence of the ground surface, as has been observed at U.S. mainland geothermal areas, such as those in California– Coso, Geysers, the Imperial Valley, and Casa Diablo in the Mammoth Lakes area.
The largest of these mainland developments is heated by magma reservoirs that supplied eruptions through non-volcanic rock layers. The magma, thousands of years old, still heats groundwater within California’s sedimentary basins, where, fluid withdrawal during geothermal energy production can reduce pressure within the subsurface rock formations. When this happens, the ground surface subsides.
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The largest of these mainland developments is heated by magma reservoirs that supplied eruptions through non-volcanic rock layers. The magma, thousands of years old, still heats groundwater within California’s sedimentary basins, where, fluid withdrawal during geothermal energy production can reduce pressure within the subsurface rock formations. When this happens, the ground surface subsides.
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