Next Article in Journal
Alongshore Variability in the Response of a Mixed Sand and Gravel Beach to Bimodal Wave Direction
Next Article in Special Issue
Dynamics of the Zones of Strong Earthquake Epicenters in the Arctic–Asian Seismic Belt
Previous Article in Journal
Interception of Rainfall in Successional Tropical Dry Forests in Brazil and Costa Rica
Previous Article in Special Issue
Combined Geophysical and Geotechnical Approaches for Microzonation Studies in Hispaniola Island
Due to scheduled maintenance work on our core network, there may be short service disruptions on this website between 16:00 and 16:30 CEST on September 25th.
Article

A Weighted Overlay Method for Liquefaction-Related Urban Damage Detection: A Case Study of the 6 September 2018 Hokkaido Eastern Iburi Earthquake, Japan

1
Department of Architecture and Building Engineering, Tokyo Institute of Technology, Yokohama 226-8502, Japan
2
Department of GIS and Remote Sensing, University of Tabriz, Tabriz 5166616471, Iran
3
Geoinformatics Unit, RIKEN AIP, Tokyo 103-0027, Japan
*
Author to whom correspondence should be addressed.
Geosciences 2018, 8(12), 487; https://doi.org/10.3390/geosciences8120487
Received: 23 October 2018 / Revised: 10 December 2018 / Accepted: 11 December 2018 / Published: 14 December 2018
We performed interferometric synthetic aperture radar (InSAR) analyses to observe ground displacements and assess damage after the M 6.6 Hokkaido Eastern Iburi earthquake in northern Japan on 6 September 2018. A multitemporal SAR coherence map is extracted from 3-m resolution ascending (track 116) and descending (track 18) ALOS-2 Stripmap datasets to cover the entire affected area. To distinguish damaged buildings associated with liquefaction, three influential parameters from the space-based InSAR results, ground-based LiquickMap (from seismic intensities in Japanese networks) and topographic slope of the study area are considered together in a weighted overlay (WO) analysis, according to prior knowledge of the study area. The WO analysis results in liquefaction potential values that agree with our field survey results. To investigate further, we conducted microtremor measurements at 14 points in Hobetsu, in which the predominant frequency showed a negative correlation with the WO values, especially when drastic coherence decay occurred. View Full-Text
Keywords: synthetic aperture radar; Hokkaido Eastern Iburi earthquake; InSAR; LiquickMap; damage; microtremor synthetic aperture radar; Hokkaido Eastern Iburi earthquake; InSAR; LiquickMap; damage; microtremor
Show Figures

Graphical abstract

MDPI and ACS Style

Karimzadeh, S.; Matsuoka, M. A Weighted Overlay Method for Liquefaction-Related Urban Damage Detection: A Case Study of the 6 September 2018 Hokkaido Eastern Iburi Earthquake, Japan. Geosciences 2018, 8, 487. https://doi.org/10.3390/geosciences8120487

AMA Style

Karimzadeh S, Matsuoka M. A Weighted Overlay Method for Liquefaction-Related Urban Damage Detection: A Case Study of the 6 September 2018 Hokkaido Eastern Iburi Earthquake, Japan. Geosciences. 2018; 8(12):487. https://doi.org/10.3390/geosciences8120487

Chicago/Turabian Style

Karimzadeh, Sadra, and Masashi Matsuoka. 2018. "A Weighted Overlay Method for Liquefaction-Related Urban Damage Detection: A Case Study of the 6 September 2018 Hokkaido Eastern Iburi Earthquake, Japan" Geosciences 8, no. 12: 487. https://doi.org/10.3390/geosciences8120487

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop