Abstract
Abstract. Landslides are an inescapable natural disaster, resulting in massive social, environmental and economic impacts all over the world. The tropical, mountainous landscape in generally all over Malaysia especially in eastern peninsula (Borneo) is highly susceptible to landslides because of heavy rainfall and tectonic disturbances. The purpose of the Landslide hazard mapping is to identify the hazardous regions for the execution of mitigation plans which can reduce the loss of life and property from future landslide incidences. Currently, the Malaysian research bodies e.g. academic institutions and government agencies are trying to develop a landslide hazard and risk database for susceptible areas to backing the prevention, mitigation, and evacuation plan. However, there is a lack of devotion towards landslide inventory mapping as an elementary input of landslide susceptibility, hazard and risk mapping. The developing techniques based on remote sensing technologies (satellite, terrestrial and airborne) are promising techniques to accelerate the production of landslide maps, shrinking the time and resources essential for their compilation and orderly updates. The aim of the study is to provide a better perception regarding the use of virtual mapping of landslides with the help of LiDAR technology. The focus of the study is spatio temporal detection and virtual mapping of landslide inventory via visualization and interpretation of very high-resolution data (VHR) in forested terrain of Mesilau river, Kundasang. However, to cope with the challenges of virtual inventory mapping on in forested terrain high resolution LiDAR derivatives are used. This study specifies that the airborne LiDAR technology can be an effective tool for mapping landslide inventories in a complex climatic and geological conditions, and a quick way of mapping regional hazards in the tropics.
Highlights
The landslide hazard has been a topic for many research studies like Carrara et al (1995), Klimeš (2007), Havlín et al (2011), Bibi et al (2016), Razak and Mohamad (2015), Freeborough et al (2016) etc
The availability of high resolution LIDAR data, solved many issues and challenges faced by landslide inventory mapping in the past decades
The detailed mapping of forested terrain through airborne laser scanning (ALS) and terrestrial laser scanning (TLS) data improved the ability of mapping landslides inventories, which eventually effects the quality of susceptibility, hazard and risk maps in the country
Summary
The landslide hazard has been a topic for many research studies like Carrara et al (1995), Klimeš (2007), Havlín et al (2011), Bibi et al (2016), Razak and Mohamad (2015), Freeborough et al (2016) etc It is a form of mass movement in which the rock, debris, or earth moves down along slope, under the influence of gravity (Cruden and Varnes, 1996). The anthropogenic activities play vital role to slope failure in lose morphology, especially on tropical terrain where excessive rainfall and humidity exist. In this situation landslides convert from natural hazard to natural disasters
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