An inverse analysis of liquefaction triggering factors based on structural equation modeling

Hirohito Kojima, Shigeyuki Obayashi

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

This paper presents an inverse analysis of unobserved triggering factors for liquefaction hazard assessments based on Structural Equation Modeling (SEM). As a cross-validation on the model performance, the past occurrences of liquefaction (i.e., endogenous variables) were divided into the following two groups: i) Case 1: Reclaimed land area over old river-course; and ii) Case 2:Micro-topographic and sand-ground area. Through the above procedure, the TFI maps were produced in Case 1 and Case 2, respectively. As a final product, the differences of these TFI maps were also delineated on a "Difference map (DIF map)." As supporting and heuristic information, the DIF map and its interpretation might be useful not only for the pixel-based estimation of unobserved triggering factors, but also for improving the cost-effectiveness of locating the places for the field measuring systems in the liquefaction hazard assessments.

Original languageEnglish
Title of host publicationGIS and Spatial Analysis - 2005 Annual Conference of the International Association for Mathematical Geology, IAMG 2005
PublisherIAMG 2005 Conference Secretariat
Pages1302-1310
Number of pages9
ISBN (Print)0973422025, 9780973422023
Publication statusPublished - 1 Jan 2005
Event2005 Annual Conference of the International Association for Mathematical Geology: GIS and Spatial Analysis, IAMG 2005 - Toronto, ON, Canada
Duration: 21 Aug 200526 Aug 2005

Publication series

NameGIS and Spatial Analysis - 2005 Annual Conference of the International Association for Mathematical Geology, IAMG 2005

Conference

Conference2005 Annual Conference of the International Association for Mathematical Geology: GIS and Spatial Analysis, IAMG 2005
Country/TerritoryCanada
CityToronto, ON
Period21/08/0526/08/05

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