GIS Data
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Reconnaissance map showing thickness of volcanic ash deposits in the greater Hilo area, Hawaii Reconnaissance map showing thickness of volcanic ash deposits in the greater Hilo area, Hawaii
This study was undertaken to determine the thickness and distribution of volcanic ash deposits in the greater Hilo area, Hawaii, as a step toward evaluating their susceptibility to failure during earthquake shaking. On several occasions their instability has resulted in serious damage. For example, the 1868 earthquake (m=7+), following a prolonged rainy period, caused a debris flow of...
Seismicity map of the State of New Mexico Seismicity map of the State of New Mexico
The data shown on this map and listed in table 1 are for earthquakes that were originally included in a study of seismic risk in the United States (Algermissen, 1969). This data file has been recompiled and updated through 1980. Some revisions of epicenters and intensities in the original file have been made, and intensities have been assigned to earthquakes that previously had none...
Seismicity map of the State of Virginia Seismicity map of the State of Virginia
The data shown on this map and listed in table 1 are for earthquakes that were originally included in a study of seismic risk in the United States (Algermissen, 1969). This data file has been recompiled and updated through 1980. Some revisions of epicenters and intensities in the original file have been made, and intensities have been assigned to earthquakes that previouly had none...