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Layer: Liquefaction Potential (ID: 0)

Name: Liquefaction Potential

Display Field: DESCRIPTIO

Type: Feature Layer

Geometry Type: esriGeometryPolygon

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.'

Copyright Text: copyright 2011

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