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Description: "Rotational slides move along a surface of rupture that is curved and concave" (Varnes, 1996) Speed: extremely slow to extremely rapid. Type of slope: slope angle 20–40 degrees [5] Control factor: morphology and lithology. Causes: Vibration, undercutting, differential weathering, excavation, or stream erosion
A rockslide is a type of landslide caused by rock failure in which part of the bedding plane of failure passes through compacted rock and material collapses en masse and not in individual blocks. Note that a rockslide is similar to an avalanche because they are both slides of debris that can bury a piece of land.
A landslide in which the sliding surface is located within the soil mantle or weathered bedrock (typically to a depth from few decimeters to some meters) is called a shallow landslide. Debris slides and debris flows are usually shallow. Shallow landslides can often happen in areas that have slopes with high permeable soils on top of low ...
Date Place Name/article Position Volume Comments Sources 1.4 Ma off northern Molokai, Hawaii: Wailau Slide 2,500 km 3: The northern third of East Molokai Volcano collapsed suddenly into the Pacific Ocean in a 25-mile (40 km) wide landslide with a 120-mile (193 km) run-out that climbed uphill 900 feet (274 m) from the Hawaiian Trough over the last 80 miles (130 km).
In deep-seated landslides, future rainfall can continue to destabilize the hillside. O'Tousa worries that the Rolling Hills slide could be impacted by future weather, as well.
Mandatory evacuations were underway in the southeastern Alaska of Ketchikan, after a landslide leveled homes and businesses on Aug. 25, 2024, leaving at least one person dead and multiple people ...
A landslide, also called a landslip, [10] is a relatively rapid movement of a large mass of earth and rocks down a hill or a mountainside. Landslides can be further classified by the importance of water in the mass wasting process. In a narrow sense, landslides are rapid movement of large amounts of relatively dry debris down moderate to steep ...
The landslide, which took place last year in September, triggered a massive tsunami in Dickson Fjord, creating puzzling tremors and a planet-wide “hum”, scientists said. The hum, unlike any ...