Accession Number : ADA116449
Title : State-of-the-Art for Assessing Earthquake Hazards in the United States. Report 19. The Evidence for Reservoir-Induced Macroearthquakes.
Descriptive Note : Miscellaneous paper,
Corporate Author : ARMY ENGINEER WATERWAYS EXPERIMENT STATION VICKSBURG MS GEOTECHNICAL LAB
Personal Author(s) : Meade,Ronald B
PDF Url : ADA116449
Report Date : Jun 1982
Pagination or Media Count : 200
Abstract : The published evidence of reservoir-induced macroearthquakes is critically reviewed. The evidence is partitioned into three types: (a) evidence of a postimpoundment increase in seismicity, (b) correlation evidence that is composed of a plot of a reservoir variable and a seismicity variable and, in most cases, an auxiliary variable, time, and (c) evidence based on the slope of the magnitude-frequency relationship (b value evidence). The basic source for each of these types of evidence is a suitably edited catalog of earthquake occurrences. Recommendations are given regarding catalog preparation and editing. The types of evidence are examined to recognize the effects of common methods of data acquisition and treatment. Postimpoundment change in seismicity can be assessed using certain recommended statistical tests. Recommendations are made regarding construction and interpretation of correlation evidence. The interpretation of correlation evidence is subjective because the assumptions required to construct and interpret the evidence cannot be verified. Evidence based on the b value is shown to be useless as a discriminant to identify induced seismicity from normal seismicity. Eight cases of reservoir induced macroearthquakes are reviewed. These eight cases are: (a) Hoover/Lake Mead, (b) Kariba, (c) Kremasta, (d) Koyna, (e) Kurobe, (f) Manic 3, (g) Hsinfengkiang, and (h) Nurek.
Descriptors : *Reservoirs, *Earthquakes, Statistical analysis, Cross correlation
Subject Categories : Seismology
Distribution Statement : APPROVED FOR PUBLIC RELEASE