Seismotectonic maps in the vicinity of the lower Wabash Valley, Illinois, Indiana, and Kentucky - Digital Spatial Database: Reported Modified Mercalli Intensity values
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资源简介：
This cover contains locations with intensity values associated
with felt reports from damaging earthquakes in the lower Wabash
Valley occurring from 1811 through 1987. Margaret Hopper collated
these data from historical data gathered from previous
researchers, personal letters, newspaper accounts, official
correspondence, and from mailed responses to queries on damage
effects from modern earthquakes. She examined all reports and
assigned a Modified Mercali Intensity (MMI) value to each report.
The values for intensity reported in these data are consistent
with the MMI scale used for describing damage from earthquakes.
For historical earthquakes, these values are gathered in the 4 -
10 range. In the central U.S., historical earthquakes have caused
damage in the 4 - 8 range only.
创建时间：
2016-10-29
