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Since the 1960s, when it was known as the California Division of Mines and Geology, CGS has produced many maps that depict landslide features and potential slope-failure areas. CGS products have included geologic maps and reports for land-use planning, landslide hazard identification maps, watershed maps, and earthquake-triggered landslide-zone ...
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 ...
The Ferguson landslide, also commonly called the Ferguson Slide, is an active landslide in the Merced River canyon in Mariposa County, California, United States. In 2006, rocks and debris slid off Ferguson Ridge, blocking California State Route 140 , a primary access road to Yosemite National Park . [ 1 ]
In California, these types of landslides are typically triggered during a big rainy season. But there is another factor at play. The Palos Verdes Peninsula — like Laguna Beach and San Clemente ...
Now we've got like 50 feet of coastline — between ocean and landslide." Sign up for Essential California for news, features and recommendations from the L.A. Times and beyond in your inbox six ...
For the main part seismically generated landslides usually do not differ in their morphology and internal processes from those generated under non-seismic conditions. However, they tend to be more widespread and sudden. The most abundant types of earthquake-induced landslides are rock falls and slides of rock fragments that form on steep slopes.
Many of the slides last week occurred in areas where hill slopes "might have conditions that predispose them to the landslides more so than normal," said Matt Thomas, a research hydrologist with ...
Landslides and fallen trees due to the heavy rain and high wind gusts destroyed and damaged many homes and closed roads throughout California. Bel-Air had a peak 24-hour rainfall of 12.42 inches (315 mm) which equates to a 380-year return interval (0.3%).Los Angeles had been incorporating elements of a stormwater harvesting design to retain the ...