Source Mechanisms for Earthquakes in Hawaii

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This research is to extend previous research on Hawaiian earthquakes and tectonics to the north part of the island of Hawaii and to the rest of the Hawaiian archipelago. These areas are less active seismically than those studied thus far, and no tectonic models exist explaining the presence of earthquakes. The previous study analyzed 250 fault-plane solutions for earthquakes in Kaoiki (between the two volcanoes Kilauea and Mauna Loa), in Kilea (the meizoseismal area of the great earthquake of 1868), and west Hawaii. The resulting estimation of stress directions and tectonic models bear on the question of seismic hazard in the Hawaiian island chain. This research is a component of the National Earthquake Hazard Reduction Program.