Sensitivity and Limitation in Damage Detection for Individual Buildings Using InSAR Coherence—A Case Study in 2016 Kumamoto Earthquakes

Natsuaki, Ryo; Nagai, Hiroto; Tomii, Naoya; Tadono, Takeo

doi:10.3390/rs10020245

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Sensitivity and Limitation in Damage Detection for Individual Buildings Using InSAR Coherence—A Case Study in 2016 Kumamoto Earthquakes

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Department of Electrical Engineering and Information Systems, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-8656, Japan

Earth Observation Research Center, Japan Aerospace Exploration Agency, 2-1-1 Sengen, Tsukuba, Ibaraki 305-8505, Japan

Satellite Applications and Operations Center, Japan Aerospace Exploration Agency, 2-1-1 Sengen, Tsukuba, Ibaraki 305-8505, Japan

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Remote Sens. 2018, 10(2), 245; https://doi.org/10.3390/rs10020245

Received: 4 December 2017 / Revised: 15 January 2018 / Accepted: 4 February 2018 / Published: 6 February 2018

(This article belongs to the Special Issue Earth Observation to Support Disaster Preparedness and Disaster Risk Management)

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Abstract

In this paper, evaluation results are presented for multi-temporal interferometric coherence analysis using a Synthetic Aperture Radar (SAR) for damage assessment in an urban area. The latest space-borne SARs potentially have a high enough spatial resolution to assess individual buildings. However, interferometric coherence analysis has not been evaluated for its limitation in sensitivity and size of damaged buildings. In particular, the correlation between the coherence analysis and the damage level referred to by architectural assessments has been an open question. In this paper, analytical results using ALOS-2 PALSAR-2 datasets are presented from the 2016 Kumamoto earthquakes in Japan. For reference, building damage was assessed throughout the central urban area and specifically at a catastrophically damaged district. The results show that the buildings should be larger than a window size of the coherence for damage detection, and the damage level should be larger than Level-2 of 5, classified with the European Macroseismic Scale 1998 (EMS-98). View Full-Text

Keywords: synthetic aperture radar (SAR); ALOS-2; PALSAR-2; damage assessment; interferometry; coherence

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Natsuaki, R.; Nagai, H.; Tomii, N.; Tadono, T. Sensitivity and Limitation in Damage Detection for Individual Buildings Using InSAR Coherence—A Case Study in 2016 Kumamoto Earthquakes. Remote Sens. 2018, 10, 245. https://doi.org/10.3390/rs10020245

AMA Style

Natsuaki R, Nagai H, Tomii N, Tadono T. Sensitivity and Limitation in Damage Detection for Individual Buildings Using InSAR Coherence—A Case Study in 2016 Kumamoto Earthquakes. Remote Sensing. 2018; 10(2):245. https://doi.org/10.3390/rs10020245

Chicago/Turabian Style

Natsuaki, Ryo, Hiroto Nagai, Naoya Tomii, and Takeo Tadono. 2018. "Sensitivity and Limitation in Damage Detection for Individual Buildings Using InSAR Coherence—A Case Study in 2016 Kumamoto Earthquakes" Remote Sensing 10, no. 2: 245. https://doi.org/10.3390/rs10020245

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Sensitivity and Limitation in Damage Detection for Individual Buildings Using InSAR Coherence—A Case Study in 2016 Kumamoto Earthquakes

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