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Geotechnical analysis of paleoseismic shaking using liquefaction features: a major updating |
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| Authors: | Scott M. Olson Russell A. Green Stephen F. Obermeier |
| Affiliation: | aDepartment of Civil and Environmental Engineering, University of Illinois – Urbana-Champaign, 2230d Newmark Civil Engineering Laboratory, Urbana, IL 61801, USA bDepartment of Civil and Environmental Engineering, University of Michigan, 2372 G.G. Brown Building, Ann Arbor, MI 48109–2125, USA cEmeritus, U.S. Geological Survey, Reston, VA, USA dEqLiq Consulting, Rockport, IN 47635, USA |
| Abstract: | A new methodology is proposed for the geotechnical analysis of strength of paleoseismic shaking using liquefaction effects. The proposed method provides recommendations for selection of both individual and regionally located test sites, provides techniques for validation of field data for use in back-analysis, and presents a recently developed energy-based solution to back-calculate paleoearthquake magnitude and strength of shaking. The proposed method allows investigators to qualitatively assess the influence of post-earthquake density change and aging. The proposed method also describes how the back-calculations from individual sites should be integrated into a regional assessment of paleoseismic parameters. |
| Keywords: | Liquefaction Paleoliquefaction Paleoseismicity Paleoseismic shaking Geotechnical analysis Earthquake magnitude Soil aging Magnitude bound |
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