The appearance rate of premonitory uplift
- 1 August 1977
- journal article
- Published by Seismological Society of America (SSA) in Bulletin of the Seismological Society of America
- Vol. 67 (4), 1091-1098
- https://doi.org/10.1785/bssa0670041091
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.Keywords
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