ESTIMATION of DAMAGED AREAS DUE to the 2010 Chile EARTHQUAKE and TSUNAMI USING SAR IMAGERY of ALOS/PALSAR

Pertiwi Jaya Ni Made, Fusanori Miura, A. Besse Rimba

Research output: Contribution to journalConference articlepeer-review

1 Citation (Scopus)

Abstract

A large-scale earthquake and tsunami affect thousands of people and cause serious damages worldwide every year. Quick observation of the disaster damage is extremely important for planning effective rescue operations. In the past, acquiring damage information was limited to only field surveys or using aerial photographs. In the last decade, space-borne images were used in many disaster researches, such as tsunami damage detection. In this study, SAR data of ALOS/PALSAR satellite images were used to estimate tsunami damage in the form of inundation areas in Talcahuano, the area near the epicentre of the 2010 Chile earthquake. The image processing consisted of three stages, i.e. pre-processing, analysis processing, and post-processing. It was conducted using multi-temporal images before and after the disaster. In the analysis processing, inundation areas were extracted through the masking processing. It consisted of water masking using a high-resolution optical image of ALOS/AVNIR-2 and elevation masking which built upon the inundation height using DEM image of ASTER-GDEM. The area result was 8.77 Km2. It showed a good result and corresponded to the inundation map of Talcahuano. Future study in another area is needed in order to strengthen the estimation processing method.

Original languageEnglish
Pages (from-to)35-42
Number of pages8
JournalISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
Volume3
DOIs
Publication statusPublished - 2016 Jun 7
Externally publishedYes
Event23rd International Society for Photogrammetry and Remote Sensing Congress, ISPRS 2016 - Prague, Czech Republic
Duration: 2016 Jul 122016 Jul 19

Keywords

  • ALOS/PALSAR
  • Damaged Areas Estimation
  • SAR Imagery
  • the 2010 Chile Earthquake and Tsunami

ASJC Scopus subject areas

  • Earth and Planetary Sciences (miscellaneous)
  • Environmental Science (miscellaneous)
  • Instrumentation

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