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Investigating the Applicability of Integrated Hydrological Modeling for Mapping Regional Liquefaction Hazard

Mital, Utkarsh and Rajasekaran, Eswar and Asimaki, Domniki and Das, Narendra N. (2018) Investigating the Applicability of Integrated Hydrological Modeling for Mapping Regional Liquefaction Hazard. In: Geotechnical Earthquake Engineering and Soil Dynamics V: Seismic Hazard Analysis, Earthquake Ground Motions, and Regional-Scale Assessment. Geotechnical Special Publication. No.291. American Society of Civil Engineers , Reston, VA, pp. 677-684. ISBN 9780784481462.

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Soil liquefaction and related phenomena, such as ground deformation and lateral spreading, pose significant risk to distributed and critical infrastructure systems. Although liquefaction vulnerability is controlled by geologic and groundwater conditions, its regional assessment is almost exclusively based on geologic material properties or proxies thereof. In this work, we are developing a multivariate methodology that incorporates groundwater conditions by introducing hydrological variables in regional assessment of liquefaction hazards. More specifically, we use remote sensing data and well-monitoring data to set up an integrated hydrological model that provides estimates of soil moisture and depth to water table. We demonstrate the methodology by presenting a case study from the 2010 El Mayor-Cucapah earthquake in Imperial County. We use reconnaissance data to train a logistic regression model, which yields probabilistic maps of liquefaction occurrence. Preliminary results indicate that the proposed approach may improve the modeling of regional liquefaction assessment at no additional site investigation cost. However, in order to draw quantitative conclusions on the accuracy improvements, more training data is necessary for which we are collaborating with the ARIA Center at JPL-Caltech.

Item Type:Book Section
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Asimaki, Domniki0000-0002-3008-8088
Additional Information:© 2018 American Society of Civil Engineers. Published online: June 07, 2018.
Series Name:Geotechnical Special Publication
Issue or Number:291
Record Number:CaltechAUTHORS:20190522-145221319
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:95706
Deposited By: Tony Diaz
Deposited On:22 May 2019 22:01
Last Modified:03 Oct 2019 21:15

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