WHAT IS GEOFORENSIC?
Landslide phenomenon occurs when the stability conditions of a slope are disrupted by factors such as an increase in stress on the slope or a decrease in the strength of the earth materials that make up the slope. This disruption can result in a mass downward movement of earth material due to the force of gravity. It is crucial to identify the causes of landslides to develop effective remedial measures and demarcate landslide-prone zones. Geohazards are influenced by multiple factors, making it essential to use a geo-forensic assessment that employs a variety of approaches to properly mitigate these problems. Overall, determining the causative factors of landslides through geo-forensic mapping is critical for identifying areas at risk, preventing future landslides, and promoting sustainable land-use planning.
The geohazard
To comprehensively understand geohazards such as landslides and ground settlements, site observation, geospatial analysis using LiDAR and aerial photogrammetry (AP), and subsurface investigation using geophysics and site investigation (SI) methods are required. This helps identify key features, associated risks, and effective mitigation strategies for sustainable land-use planning.
Potential factors
A geohazard is the consequence of an adverse combination of geological processes and ground conditions, sometimes precipitated by anthropogenic activity. Two types of factors are common to be anticipated for the geohazard which are contributing and triggering factors.
Processing & analysis
The component includes the processing and analysing the geospatial data and historical event sequence of the geohazard which are acquired from LiDAR/ AP / topo-survey data and open source satellite imageries.
Mitigation conceptual design
This phase involves conducting a comprehensive analysis and assessment of landslide risk, including geotechnical aspects, proposed mitigation measures, and spatial development planning. The goal is to develop effective strategies to mitigate risk and promote sustainable planning.
