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The appearance rate of premonitory uplift

COOPERATIVE INSTITUTE FOR RESEARCH IN ENVIRONMENTAL SCIENCES NATIONAL OCEANIC AND ATMOSPHERIC ADMINISTRATION UNIVERSITY OF COLORADO, BOULDER, COLORADO 80309

Abstract

Sea level data are used to show that 5 to 8 cm of aseismic uplift accumulated in a few months before the Long Beach, Hyuganada, and Peru earthquakes. This uplift rate is an order of magnitude faster than tectonic loading rates. Alternative mechanisms to explain this observation are anelastic creep at depth or dilatancy in a jointed crust. The energy expended during uplift is larger than the seismically radiated energy by approximately a factor of ten.

This article has been cited by other articles:

				M. E. Wilson, M. E. WILSON, and S. H. WOOD Tectonic Tilt Rates Derived from Lake-Level Measurements, Salton Sea, California Science, January 11, 1980; 207(4427): 183 - 186. [Abstract] [PDF]