Detection of Coastal Damage using Differences in Automatically Generated Digital Surface Models (DSMs): Application to the 2011 off the Pacific Coast of Tohoku Earthquake Tsunami

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

Abstract

The detection of coastal damage due to the 2011 Off the Pacific Coast of Tohoku Earthquake Tsunami on the southern Sendai Coast was attempted via state-of-the-art remote sensing technology using ALOS PRISM satellite images with a spatial resolution of 2.5 m. Digital surface models (DSMs) were generated semi-automatically, and their accuracies were confirmed via comparisons with digital elevation models generated from aerial laser measurements. The differences between the DSMs prior to and after the tsunami were analyzed statistically for each type of land cover: residential districts, rice fields, coastal forests, and beaches. It was demonstrated that the damage to the coastal forests and residential districts could be detected though the damage in the low land area was difficult to be detected because of its small undulations in topography. Low pass filtering was employed to remove the jitter noise; however, the major characteristics such as damage in the coastal forests and residential areas were not changed by the filtering; that is, the major statistical characteristics could be detected without filtering.

Original languageEnglish
Pages (from-to)696-700
Number of pages5
JournalJournal of Coastal Research
Volume85
DOIs
Publication statusPublished - 2018 May 1

Keywords

  • Automatic DSM generation
  • coastal forest damage
  • tsunami disaster

ASJC Scopus subject areas

  • Ecology
  • Water Science and Technology
  • Earth-Surface Processes

Fingerprint Dive into the research topics of 'Detection of Coastal Damage using Differences in Automatically Generated Digital Surface Models (DSMs): Application to the 2011 off the Pacific Coast of Tohoku Earthquake Tsunami'. Together they form a unique fingerprint.

Cite this