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Liquefaction-induced horizontal displacements from the Canterbury earthquake sequence in New Zealand measured from remote sensing techniques

Ellen M. Rathje, Sorin S. Secara, Jonathan G. Martin, Sjoerd van Ballegooy and James Russell
Liquefaction-induced horizontal displacements from the Canterbury earthquake sequence in New Zealand measured from remote sensing techniques
Earthquake Spectra (2017) 33 (4): 1475-1494

Abstract

Using satellite image pairs from the 2010-2011 Canterbury Earthquake Sequence (CES) in New Zealand, optical image correlation is used to measure horizontal displacements due to liquefaction-induced lateral spreading. Horizontal displacements as small as 0.2 to 0.3 m are accurately measured by optical image correlation at a spatial resolution of less than 20 m. Comparisons with field survey measurements of horizontal displacement are favorable, but some differences are observed due to the different spatial scales of the measurements. Liquefaction-induced horizontal displacements derived from LIDAR surveys are similar to those from optical image correlation, but in some locations the LIDAR measurements are inaccurate due to limitations in the LIDAR survey acquisition methodology used. This paper demonstrates that optical image correlation from satellite image pairs can be used to create more complete databases of liquefaction-induced horizontal movements, which can be used to improve current predictive models for liquefaction-induced horizontal displacements. Future post-earthquake investigations and research should make use of optical image correlation to document the horizontal displacements associated with liquefaction.


ISSN: 8755-2930
EISSN: 1944-8201
Serial Title: Earthquake Spectra
Serial Volume: 33
Serial Issue: 4
Title: Liquefaction-induced horizontal displacements from the Canterbury earthquake sequence in New Zealand measured from remote sensing techniques
Affiliation: University of Texas at Austin, Department of Civil, Architectural and Environmental Engineering, Austin, TX, United States
Pages: 1475-1494
Published: 2017
Text Language: English
Publisher: Earthquake Engineering Research Institute, Berkeley, CA, United States
References: 15
Accession Number: 2019-088028
Categories: Engineering geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
S44°57'00" - S41°47'60", E168°46'00" - E173°28'00"
Secondary Affiliation: Golder Associates, USA, United StatesTonkin and Taylor, NZL, New Zealand
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2022, American Geosciences Institute. Reference includes data supplied by Institute of Geological and Nuclear Sciences Limited (GNS Science), Lower Hutt, New Zealand
Update Code: 201947
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