Which of these is the correct order of these regions with regard to the incidences of Landslides occurring in them?
Which of these is the correct order of these regions with regard to the incidences of Landslides occurring in them?
The correct option is D Himalayas > North-eastern Hills > Western Ghats and the Nilgiris> Vindhayachal.
Depending on the rock structure, different regions have varying incidences of landslides. Soft and unconsolidated formations like Himalayas have High to very high incidence of landslides.
North-eastern Hills too have High incidence.Western Ghats and the Nilgiris have moderate to low and Vindhayachal has low incidence due to the hard and consolidated rock structure.
Learning: There seems to be a relation between intensity of rainfall and slope failures in Western Ghats.
Almost all mass movements occur during monsoons (SW and NE monsoon) in the western flank of Western Ghats and during occasional cyclonic events in the eastern flank indicating that main triggering mechanism is the over- saturation of overburden caused by heavy rains.
Depending on the rock structure, different regions have varying incidences of landslides. Soft and unconsolidated formations like Himalayas have High to very high incidence of landslides.
North-eastern Hills too have High incidence.Western Ghats and the Nilgiris have moderate to low and Vindhayachal has low incidence due to the hard and consolidated rock structure.
Learning: There seems to be a relation between intensity of rainfall and slope failures in Western Ghats.
Almost all mass movements occur during monsoons (SW and NE monsoon) in the western flank of Western Ghats and during occasional cyclonic events in the eastern flank indicating that main triggering mechanism is the over- saturation of overburden caused by heavy rains.
