Bay mud remains a seismic hazard because on the basis of its past performance in earthquakes it will produce stronger levels of shaking than other geologic units.The new maps show in unprecedented detail the nature of the materials that underlie areas of densest urban development and highlight areas that may be prone to shaking-related damage during future earthquakes. Special Study Areas Map Salt Lake County, UT Salt Lake County Planning and Development Services 2001 S State St Ste N3600 SLC, UT 82190-4050 For more information call: (801) 468-2441 DISCLAIMER: Legend Freeway Faults Canals Streams JordanRiver Study Area Lakes Municipal Boundaries Liquefaction … Center your desired location under the cross hairs and click the launch streetview button. The 1868 earthquake on the Hayward fault was preceded by 12 earthquakes of The 1906 San Andreas fault event was preceded from 1881 to 1903 by 18 earthquakes of The Loma Prieta earthquake is of similar magnitude to the 1868 Hayward event and could be followed by a similarly short quiet period.Since 2002, the Bay Area has suffered two major earthquakes: The Head to Curbed.com — soon to be part of the New York Magazine family — for must-read stories on S.F., Silicon Valley, the East Bay, and beyond.The renovated home comes with beamed ceilings, leaded windows, and a brick fireplace.It was made by Fascist ruler Mussolini’s bodyguard and official sculptor.The largest of seven units is on the market for the first time.High atop the second highest hill in the city, with a curvy street perfect for skating, skaters took to the streets to protest racism. In the South Bay and along the Peninsula, one massive liquefaction zone extends from SFO down through most of Santa Clara and San Jose. Soft muds on which it was constructed shook much more strongly than surrounding regions on stronger ground. Figure on the right (USGS photo) shows part of the Cypress structure, the freeway approach to the Bay Bridge from Oakland, which collapsed during the Loma Prieta earthquake, killing 42 people. You may Update this view or Save a new view to see your changes, or Cancel to stay on this page.This is a digital Seismic Hazard Zone Map presenting areas where liquefaction and landslides may occur during a strong earthquake. King County Liquefaction Susceptibility The information included on this map has been compiled for King County from a variety of sources and is subject to change without notice. Quick Access Interactive Web Maps: Subject specific web maps. Measure distances. Such areas along the Bay margins are found in San Francisco, Oakland and Alameda Island, as well as other places around San Francisco Bay.
The maps aid the design professional by delineating areas where liquefaction could pose a significant hazard and should therefore be considered during facilities design. Some of the young deposits strongly affect the strength of earthquake shaking that is transmitted through the deposits.Figure on left shows that the shaking experienced in a region depends very strongly on the type of deposits found near the surface. Liquefaction, a process in which loose, granular soils below the ground water table temporarily lose strength during strong earthquake shaking, has been the cause of considerable damage during earthquakes.
Other potentially hazardous areas include those along some of the larger streams, which produce the loose young soils that are particularly susceptible to liquefaction.These new maps show a lower likelihood of liquefaction than previously thought in regions underlain by Bay mud that fringes many parts of San Francisco Bay.
The maps also contribute to the California Geological Survey’s The first is a new map of the young geologic deposits in the low-lying sections of the Bay Area.
During violent quakes, seemingly solid ground can turn into the consistency of cake batter, collapsing overhead buildings and infrastructure. To provide a micro- zonation of this hazard, maps have been prepared for various subregions of the United States. Seattle Liquefaction Color intensity indicates danger from earthquakes.
This is a digital Seismic Hazard Zone Map presenting areas where liquefaction and landslides may occur during a strong earthquake. Coordinate. Papers and maps of some larger WA population centers The map is searchable by address, and it maps three main hazard zones: Fault zones Landslide zones Liquefaction zones The map also displays areas that have not yet been evaluated for The maps aid the design professional by delineating areas where liquefaction could pose a significant hazard and should therefore be considered during facilities design. Developers of properties falling within any of the three zones may be required to investigate the potential hazard and mitigate its threat during the local permitting process. Feature Info .
All of the following resources can also be found on our Publications and Maps page, through the Find out if your property is in an Alquist-Priolo Earthquake Fault Zone or Seismic Hazard Zone, or both.
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