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New empirical relationships among magnitude, rupture length, rupture width, rupture area, and surface (1994)
| Citations: | 521 - 0 self |
BibTeX
@MISC{Wells94newempirical,
author = {Donald L. Wells},
title = {New empirical relationships among magnitude, rupture length, rupture width, rupture area, and surface},
year = {1994}
}
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Abstract
Abstract Source parameters for historical earthquakes worldwide are compiled to develop a series of empirical relationships among moment magnitude (M), surface rupture length, subsurface rupture length, downdip rupture width, rupture area, and maximum and average displacement per event. The resulting data base is a significant update of previous compilations and includes the additional source parameters of seismic moment, moment magnitude, subsurface rupture length, downdip rupture width, and average surface displacement. Each source parameter is classified as reliable or unreliable, based on our evaluation of the accuracy of individual values. Only the reliable source parameters are used in the final analyses. In comparing source parameters, we note the following trends: (1) Generally, the length of rupture at the surface is equal to 75% of the subsurface rupture length; however, the ratio of surface rupture length to subsurface rupture length increases with magnitude; (2) the average surface displacement per event is about one-half the maximum surface displacement per event; and (3) the average subsurface displacement on the fault plane is less
Keyphrases
rupture area subsurface rupture length new empirical relationship rupture length rupture width moment magnitude average surface displacement surface rupture length source parameter downdip rupture width maximum surface displacement fault plane final analysis reliable source parameter following trend seismic moment average displacement individual value significant update abstract source parameter previous compilation data base empirical relationship rupture length increase additional source parameter average subsurface displacement historical earthquake
