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The State of California Department of Conservation produces regulatory maps showing locations where the hazard from earthquake-triggered landslides must be evaluated prior to specific types of land-use development in accordance with provisions of Public Resources Code, Section 2690 et seq. (Seismic Hazards Mapping Act).
This type of measure is used in cases of smaller landslides. The effectiveness of micropiles is linked to the insertion of micropiles over the entire landslide area. In the case of rotational landslides in soft clay, the piles contribute to increasing the resisting moment by friction on the upper part of the pile shaft found in the landslide.
The Seismic Hazards Mapping Act, passed in 1990, addresses non-surface fault rupture earthquake hazards, including liquefaction and seismically induced landslides. The act only applies to faults which are "sufficiently active" and "well defined"- for example the 1994 Northridge earthquake occurred on a blind thrust fault not zoned by the act ...
An ancient complex of landslides under the Portuguese Bend Reserve, located within the larger Palos Verdes Nature Preserve, was activated in 1956, which halted all housing development in the area.
Rancho Palos Verdes, a coastal community in the Los Angeles area, could be described as a geological ticking time bomb. The affluent city sits atop steep cliffs overlooking the Pacific Ocean that ...
Since its founding in 1991, [2] GeoHazards International has worked in more than 20 different countries around the world to develop and deploy preventative solutions that are known to save lives in the face of natural disasters such as earthquakes, tsunamis, landslides, and impacts from climate change.
Related: 3 Multimillion-Dollar Homes on a Cliff in Southern California Are 'Safe' After Landslide Jonathan Godt, the U.S. Geological Service's landslides hazards program coordinator, said it can ...
The landslide area spanned approximately 90 acres [38] and damaged and destroyed several homes. [3] Impacted homeowners received roughly $16 million in compensatory setttlements. [38] In 1987, there was a documented landslide in the Flying Triangle area above Portuguese Bend. [29]