TerraSAR-X and ALOS/PALSAR data for soil stability monitoring in Malaysia

Yrjö Rauste, Habibah Lateh, Mohd. Muhiyuddin Wan Ibrahim Wan, Anne Lönnqvist, Tuomas Häme

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

    Abstract

    Early warning systems for tsunami are typically run by national rescue authorities or natural disaster centers. These centers have to operate round the clock, which is costly. Therefore it is practical to combine many hazard types in these centers. Techniques of SAR interferometry were used in image analysis. These techniques included computation of coherence between a pair of scenes and its generalization to the case of three scenes, the so called triherence. Amplitude and coherence images were ortho-rectified with a digital elevation model (DEM). Coherence and triherence in TerraSAR-X high-resolution spotlight data were lower in periods with high soil movement. Amplitude in ALOS PALSAR data showed changes in the Penang site, especially in agricultural areas. TerraSAR-X data – due to its high spatial resolution - seem suitable for monitoring the stability of forest-free hill slopes provided that movements are in the order of some tens of centimeters.
    Original languageEnglish
    Title of host publicationTsunami education, protection and preparedness
    EditorsKoh Hok Lye, Philip L-F Liu, Teh Su Yean
    Place of PublicationPenang, Malaysia
    Pages216-226
    ISBN (Electronic)978-1-5231-1664-5
    Publication statusPublished - 2011
    MoE publication typeB3 Non-refereed article in conference proceedings
    EventSouth China Sea Tsunami Workshop 3. - Penang, Malaysia
    Duration: 3 Nov 20095 Nov 2009

    Conference

    ConferenceSouth China Sea Tsunami Workshop 3.
    CountryMalaysia
    CityPenang
    Period3/11/095/11/09

    Keywords

    • landslide
    • radar
    • risk management

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