DRR | Rainfall-Induced Geologic Hazards Flashcards
also called “landslip” is a ground movement on a sloping terrain
landslide
a natural agent for erosion, and if rain or any source of water frequently flows down a sloping area, the gravitational descent of loosened soil makes it possible for landslide to occur.
water
Rainfall-induced landslide hazards are characterized by areas with:
Steep slope
Dense population
Denude ground
are depressions or holes of the ground that resulted from the collapsed of the surface layer of the soil
sinkholes
occur in areas where the soil foundation is made of soft minerals and rocks such as silicate materials, salt beds, or any acidic rocks.
sinkholes
a scientific tool for landslide
Laser Rangefinder
Equipped with a tiltmeter and is used to measure the slope angle, soil compaction, and soil strength of an area.
Laser Rangefinder
a Scientific Tool For Sinkholes
Ground-Penetrating Radar (GPR)
Provide images subsurface ground. It can detect the type of objects, changes in material, and voids and cracks under a layer of soil.
Ground-Penetrating Radar (GPR)
It is an ongoing priority project of the DENR designed to provide accurate and detailed profile of the terrain of the Philippines.
Geohazard Mapping and Assessment Program
Is a specialized map that indicates the hazard susceptibility of areas.
Geohazard Map
Be familiar with your surroundings.
before a landslide
Be attentive to unusual sounds such as cracking objects, moving debris, and rolling boulders.
during a landslide
Avoid the slide area.
after a landslide
Avoid open storm-water drainage and runoff as these areas are likely to receive debris and soil from higher elevations, especially when there is storm of heavy rainfall
before a landslide
