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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).
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 ...
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.
“Basic physics says that once a body is in motion, it wants to stay in motion,” said Jonathan Godt, the landslides hazards program coordinator at the U.S. Geological Service. The threat to ...
In the last few weeks, Southern California Gas Co. shut off service to 135 homes in the landslide area, citing safety concerns from the worsening land movement.
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 ...
In Summer 2024, City officials informed residents that they have identified additional land movements and landslides for Rancho Palos Verdes. [21] [31] The new, deeper slide appears to be moving faster and deeper, shifting the city's strategy from individual landslide event response to a broader strategy to address all landslide hazards and issues.
With more than 72% of the votes, the bonds will be used to build and refurbish county schools. In a landslide, Beaufort County votes ‘yes’ to $439 million school referendum Skip to main content