Since pioneers founded our lovely city, we’ve dug and shifted the soil to …
Washington State Department of Natural Resources: Liquefaction maps by county No. Year Format Details Thumbnail IMs-60 2018 preview/ download IMS-60, Landslide hazard and risk study of Eugene-Springfield and Lane County, Oregon, by Nancy C. Calhoun, William J. Burns, Jon J. Franczyk, and Gustavo Monteverde, 2018, 42 p., appendices, 3 60 x 38 map plates, 1:34,000, GIS data. City of Portland maps by tax parcel (search by address; go to Maps/Hazard to see earthquake, landslide, flood hazards) Interpretive map series (Oregon Department of Geology and Mineral Industries) washington. ODOT Liquefaction Hazard Assessment using Ground Motions from PSHA Page 4 the initial liquefaction hazard assessment and, if necessary, in the design of mitigation strategies involving ground treatment. Portland’s topography is a bit different today than it was 150 years ago.
A recently updated state map shows the areas at highest risk for liquefaction in a large quake. Wherever our next earthquake originates, the damage will be exponentially worse on top of Portland’s liquefaction zones. Pacific Northwest seismic hazards maps. Earthquake Hazard Maps & Liquefaction RESOURCES Editable Word docs for this activity are also available in the RESOURCES folder below. 01-29-2018 - added radon potential layer from DOGAMI Open-File Report O-18-01 ; redeployed site using JavaScript Your browser is currently not supported. City of Portland maps by tax parcel (search by address; go to Maps/Hazard to see earthquake, landslide, flood hazards) Interpretive map series (Oregon Department of Geology and Mineral Industries) Washington.
Paper cups & coins plus sand & water. When earthquake vibrations pass through sand or silt, which has a
Liquefaction Triggering Probability This map uses the methods of section 4.2.2.1 of the HAZUS-MH MR4 (FEMA, 2011 in references) to create a new coseismic liquefaction probability map for Oregon.
Name(s): Oregon Department of Geology and Mineral Industries Geological Survey (U.S.) Type of Resource: cartographic : Genre:
03-13-2018 – updated Cascadia Earthquake Hazard layer to include Portland metro data from DOGAMI Open-File Report O-18-02. The map uses a new Name: Liquefaction Hazard Display Field: LiqExpl Type: Feature Layer Geometry Type: esriGeometryPolygon Description: The intent of this dataset is to depict liquefaction susceptibility from a M9 earthquake on the Cascade Subduction Zone within the Portland Water Bureau (PWB) service area and corridors along the conduits leading from the Bull Run watershed. Washington State Department of Natural Resources: Liquefaction maps by county Liquefaction Hazard Maps 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. pacific northwest seismic hazards maps. Please note that creating presentations is not supported in Internet Explorer versions 6, 7.
But not all risky areas are along waterways.
Such areas along
Hazard maps are developed to illuminate areas that are affected or vulnerable to a particular hazard. Portland International Airport is in a red high-risk area. City of Portland The City of Portland has released a new map showing the most dangerous places to be during an earthquake. Find local businesses, view maps and get driving directions in Google Maps. King County, WA liquefaction susceptibility map (2010) indicates much of the Port of Seattle and the Boeing Company's Renton jet factory lie on high risk zones. Fundamentally, the best measure of cyclic demand would account for the intensity, duration, and to a lesser extent the frequency content of The Portland Bureau of Emergency Management released a map and database on unreinforced masonry buildings. The highest hazard areas shown by the liquefaction hazard maps are concentrated in regions of man-made landfill, especially fill that was placed many decades ago in areas that were once submerged bay floor. Earthquake hazard maps of the Portland quadrangle, Multnomah and Washington Counties, Oregon, and Clark County, Washington. 110 Liquefaction A common cause of damage during earthquakes is the result of liquefaction of the soil.
The Geologic Information Portal has a Natural Hazards single-topic map that contains the site class, liquefaction, and seismic design categories data. The map categorizes masonry buildings based on their hazard level. The maps will be used by state and local governments to update existing hazard mitigation plans and to delineate geologically hazardous areas under the Growth Management Act.