Mapping of post-event earthquake induced landslides in Sg. Mesilou using LiDAR

Earthquake is a common natural disaster in active tectonic regions. The disaster can induce cascading disasters such as debris flow, mudflow and reactivated old landslides. M 6.0 Ranau earthquake dated on June 05, 2015 coupling with intense and prolonged rainfall caused several mass movements such a...

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Bibliographic Details
Published inIOP conference series. Earth and environmental science Vol. 37; no. 1; pp. 12068 - 12082
Main Authors Yusoff, Habibah Hanan Mat, Razak, Khamarrul Azahari, Yuen, Florence, Harun, Afifi, Talib, Jasmi, Mohamad, Zakaria, Ramli, Zamri, Razab, Razain Abd
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.06.2016
Subjects
Debris flow
Detritus
Disasters
Earthquakes
Landslides
Landslides & mudslides
Lidar
Mapping
Mitigation
Mudflows
Natural disasters
Rainfall
Risk assessment
Risk management
Risk reduction
Seismic activity
Seismic response
Tectonics
Tropical environments
Zonation
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Summary:Earthquake is a common natural disaster in active tectonic regions. The disaster can induce cascading disasters such as debris flow, mudflow and reactivated old landslides. M 6.0 Ranau earthquake dated on June 05, 2015 coupling with intense and prolonged rainfall caused several mass movements such as debris flow, deep-seated and shallow landslides in Mesilou, Sabah. This study aims at providing a better insight into the use of advanced LiDAR mapping technology for recognizing landslide induced by earthquakes particularly in a vegetated terrain, assessing post event hazard and analyzing its distribution for hazard zonation. We developed the landslide inventory using LiDAR-derived visual analysis method and validated in the field. A landslide inventory map improved with the support of LiDAR derivative data. Finally, landslide inventory was analysed by emphasizing its distribution and density in such a way that it provides clues of risky zone as a result of debris flow. We recommend that mitigation action and risk reduction should be taken place at a transport zone of the channel compared to other zones. This study indicates that modern airborne LiDAR can be a good complementary tool for improving landslide inventory in a complex environment, and an effective tool for rapid regional hazard and risk assessment in the tropics.
ISSN:1755-1307
1755-1315
DOI:10.1088/1755-1315/37/1/012068