Name: Habitat_OffshoreHalfMoonBay

Display Field: HabCode

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: This part of DS 781 presents data for the habitat map of the seafloor of the Offshore of Half Moon Bay map area, California. The polygon shapefile is included in "Habitat_OffshoreHalfMoonBay.zip," which is accessible from http://pubs.usgs.gov/ds/781/OffshoreHalfMoonBay/data_catalog_OffshoreHalfMoonBay.html. Using multibeam echosounder (MBES) bathymetry and backscatter data (see Bathymetry; Backscatter A [8101]; and Backscatter B [7125]--Offshore Half Moon Bay, California, DS 781), potential marine benthic habitat maps were constructed. The habitats were based on substrate types and documented or "ground truthed" using underwater video images and seafloor samples obtained by the USGS. These maps display various habitat types that range from flat, soft, unconsolidated sediment-covered seafloor to hard, deformed (folded), or highly rugose and differentially eroded bedrock exposures. Rugged, high-relief, rocky outcrops that have been eroded to form ledges and small caves are ideal habitat for rockfish (Sebastes spp.) and other bottom fish such as lingcod (Ophiodon elongatus). Habitat map is presented in a map format generated in a GIS (ArcMap), and both digital and hard-copy versions will be produced.

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Copyright Text:

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YMin: 4493025.416693014
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Spatial Reference: 102100  (3857)

Drawing Info:

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Field 1: HabCode
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Type ID Field: null

Fields:

• FID ( type: esriFieldTypeOID , alias: FID )
• Shape ( type: esriFieldTypeGeometry , alias: Shape )
• Id ( type: esriFieldTypeInteger , alias: Id )
• HabCode ( type: esriFieldTypeString , alias: HabCode , length: 25 )
• Hab_Type ( type: esriFieldTypeString , alias: Hab_Type , length: 100 )
• Mega_ID ( type: esriFieldTypeString , alias: Mega_ID , length: 5 )
• Mega ( type: esriFieldTypeString , alias: Mega , length: 25 )
• Ind_ID ( type: esriFieldTypeString , alias: Ind_ID , length: 25 )
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• Mod_ID ( type: esriFieldTypeString , alias: Mod_ID , length: 25 )
• Mod ( type: esriFieldTypeString , alias: Mod , length: 35 )
• Hab_Desc ( type: esriFieldTypeString , alias: Hab_Desc , length: 200 )
• Sed_ID ( type: esriFieldTypeString , alias: Sed_ID , length: 15 )
• Sed ( type: esriFieldTypeString , alias: Sed , length: 35 )
• area_m2 ( type: esriFieldTypeDouble , alias: area_m2 )
• ET_ID ( type: esriFieldTypeInteger , alias: ET_ID )

Supported Operations:   Query   Generate Renderer   Return Updates

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