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Geology/Seismic_Earthquake_Liquefaction_Potential (MapServer)

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Service Description: Liquefaction Potential of Surficial Materials in Indiana, 2011 (1:500,000) - Shows shows highly generalized categories (low, moderate, and high) of liquefaction potential, based on soil classes of the National Earthquake Hazards Reduction Program (NEHRP). This data set provides a digital coverage of the predicted response of surficial geologic materials in Indiana to liquefaction induced by earthquakes. It is intended to be used by Indiana Department of Homeland Security, emergency planners, and responders on the state and local level as a general reference guide to identify potential areas of evaluated risks of liquefaction. Low liquefaction potential includes NEHRP Soil Class B (consisting of rock: sandstone, limestone, shale). Moderate liquefaction potential includes NEHRP Soil Class C (hard or stiff soil, or gravel) and part of NEHRP Soil Class D (stiff soil, stiff clay, and some gravel). High liquefaction potential includes parts of NEHRP Soil Class D (stiff soil, stiff clay, and some gravel), and all of NEHRP Soil Class E (soft soil and soft to medium clay) and F (lake and river deposits of sand and mud). The following is excerpted from Indiana Geological Survey Miscellaneous Map 81: 'Liquefaction is a common ground-failure hazard associated with earthquakes. It is defined as the sudden and temporary loss of strength of a water-saturated sediment. This could result in the structural failure of buildings, bridges, and other structures.'

Map Name: Layers


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Layers: Description:

Copyright Text: National Earthquake Hazard Reductions Program (NEHRP), Federal Emergency Management Agency (FEMA), Indiana Department of Homeland Security (IDHS), Indiana Geological Survey Miscellaneous Map 81 (2011)

Spatial Reference: 26916  (26916)

Single Fused Map Cache: true

Tile Info: Initial Extent: Full Extent: Units: esriMeters


Document Info: Supports Dynamic Layers: false

MaxRecordCount: 100

MaxImageHeight: 2048

MaxImageWidth: 2048

Supported Query Formats: JSON, geoJSON

Supports Query Data Elements:

Min Scale: 2500000

Max Scale: 1000

Supports Datum Transformation: true

Child Resources:   Info

Supported Operations:   Export Map   Identify   QueryDomains   QueryLegends   Find   Return Updates   Generate KML