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,


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
      Civil Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE