Application of PALSAR-2 remote sensing data for landslide hazard mapping in Kelantan river basin, peninsular Malaysia

Pour, A. B. and Hashim, M. (2016) Application of PALSAR-2 remote sensing data for landslide hazard mapping in Kelantan river basin, peninsular Malaysia. In: 23rd International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences Congress, ISPRS 2016, 12-19 July 2016, Prague, Czech Republic.

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Yearly, several landslides ensued during heavy monsoons rainfall in Kelantan river basin, peninsular Malaysia, which are obviously connected to geological structures and topographical features of the region. In this study, the recently launched Phased Array type L-band Synthetic Aperture Radar-2 (PALSAR-2) onboard the Advanced Land Observing Satellite-2(ALOS-2), remote sensing data were used to map geological structural and topographical features in the Kelantan river basin for identification of high potential risk and susceptible zones for landslides. Adaptive Local Sigma filter was selected and applied to accomplish speckle reduction and preserving both edges and features in PALSAR-2 fine mode observation images. Different polarization images were integrated to enhance geological structures. Additionally, directional filters were applied to the PALSAR-2 Local Sigma resultant image for edge enhancement and detailed identification of linear features. Several faults, drainage patterns and lithological contact layers were identified at regional scale. In order to assess the results, fieldwork and GPS survey were conducted in the landslide affected zones in the Kelantan river basin. Results demonstrate the most of the landslides were associated with N-S, NNW-SSE and NE-SW trending faults, angulated drainage pattern and metamorphic and Quaternary units. Consequently, structural and topographical geology maps were produced for Kelantan river basin using PALSAR-2 data, which could be broadly applicable for landslide hazard mapping.

Item Type:Conference or Workshop Item (Paper)
Uncontrolled Keywords:Kelantan river basin, Landslide hazard mapping, PALSAR-2, Peninsular Malaysia
Subjects:G Geography. Anthropology. Recreation > G Geography (General) > G70.39-70.6 Remote sensing
Divisions:Geoinformation and Real Estate
ID Code:73649
Deposited By: Mohd Zulaihi Zainudin
Deposited On:28 Nov 2017 14:50
Last Modified:28 Nov 2017 14:50

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