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The factors that have been used for landslide hazard analysis can usually be grouped into geomorphology, geology, land use/land cover, and hydrogeology. Since many factors are considered for landslide hazard mapping, GIS is an appropriate tool because it has functions of collection, storage, manipulation, display, and analysis of large amounts ...
From 1983 through 1994, CGS was directed to produce Landslide Hezard Identification Maps under the State's Landslide Hazard Identification Act. Though of high quality and designed for land-use planning purposes, the Act did not require local governments to use the maps. The Act was repealed January 1, 1995 per a sunset provision in the Act. [2]
Example of a hazard map. A hazard map is a map that highlights areas that are affected by or are vulnerable to a particular hazard. They are typically created for natural hazards, such as earthquakes, volcanoes, landslides, flooding and tsunamis. Hazard maps help prevent serious damage and deaths. [1]
The Portuguese Bend Landslide is a highly active landslide area that covers approximately 240 acres. [ 33 ] [ 34 ] Since Spring 2023, there has been noticeable land movement and collateral damage in the Portuguese Bend Beach Club, Portuguese Bend Community Association, and Seaview neighborhoods.
Hazard data : this map of the USGS (United States Geological Survey). Additional data (rivers, borders, cities) : Demis; compass rose from Compass rose pale.svg (opacified) created by Fibonacci under GFDL ; scale from Image:Scale_kilometres_miles_svg.svg by Sémhur under Public Domain.
Seismic microzonation is defined as the process of subdividing a potential seismic or earthquake prone area into zones with respect to some geological and geophysical characteristics of the sites such as ground shaking, liquefaction susceptibility, landslide and rock fall hazard, earthquake-related flooding, so that seismic hazards at different locations within the area can correctly be ...
These result in tephra and ash fall hazards for surrounding areas. [ 2 ] Large horseshoe-shaped craters formed by landslides at volcanoes will likely direct subsequent lava flows, pyroclastic flows or lahars toward its breached opening if the primary eruptive vent is located within these deep craters.
Print/export Download as PDF; Printable version; In other projects ... Landslide analysis, prevention and mitigation (1 C, 11 P) Landslides by country (21 C)