Remote Sensing Approach for Mapping and Monitoring Tsunami Debris

Shunichi Koshimura, Takumi Fukuoka

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    2 Citations (Scopus)

    Abstract

    In the 2011 Great East Japan Earthquake and Tsunami Disaster, approximately 23 million tons of debris was estimated over wide areas caused by the tsunami damage. Quantitative estimation of tsunami debris is essential from disaster response point of view. In this study, a novel remote sensing method has been developed for directly measuring the amount of debris in the affected areas and for mapping the results. Specifically, two methods are integrated. The first extracts spatial extent of debris areas using optical sensor data (digital aerial photos and satellite images) obtained immediately after tsunami disaster. The second determines the amount of debris on the ground and quantitatively estimates its amount (volume, weight) by integrating analysis that uses the height of the debris obtained by airborne light detection and ranging (LiDAR).The analysis was conducted in Onagawa town, Miyagi Prefecture, one of the most severely affected by the 2011 event, including the ground truth data acquisition. The horizontal mapping of tsunami debris in Onagawa town was performed through object-based image analysis of aerial and satellite images. Integration of horizontal mapping of tsunami debris and the analysis of digital surface model (DSM) of LiDAR data yields an estimate of the volume of the debris to be used as the observation of debris removal efforts.

    Original languageEnglish
    Title of host publication2019 IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2019 - Proceedings
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Pages4829-4832
    Number of pages4
    ISBN (Electronic)9781538691540
    DOIs
    Publication statusPublished - 2019 Jul
    Event39th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2019 - Yokohama, Japan
    Duration: 2019 Jul 282019 Aug 2

    Publication series

    NameInternational Geoscience and Remote Sensing Symposium (IGARSS)

    Conference

    Conference39th IEEE International Geoscience and Remote Sensing Symposium, IGARSS 2019
    Country/TerritoryJapan
    CityYokohama
    Period19/7/2819/8/2

    Keywords

    • LiDAR
    • optical sensor
    • tsunami debris

    ASJC Scopus subject areas

    • Computer Science Applications
    • Earth and Planetary Sciences(all)

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