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Layer: National Seafloor Geology (GLORIA) (ID: 13)

Name: National Seafloor Geology (GLORIA)

Display Field: description

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: In 1984, the U.S. Geological Survey (USGS) began a program to map deep water portions of the Exclusive Economic Zone (EEZ) by selecting the long-range side scan sonar system GLORIA (Geological Long-Range Inclined ASDIC). The USGS selected side-scan sonar as the mapping tool because it could be used to obtain information on geologic processes. The intensity of back-scattered sound from the seafloor is a function of the gradient or slope of the seafloor, surface roughness, and sediment characteristics such as texture. The darkness or brightness of a feature or an area on the sonographs and completed mosaics is therefore a function of how much sound is reflected from the seafloor. The recorded digital data are processed and used to construct digital maps of the seafloor.

Definition Expression: N/A

Copyright Text: U.S. Geological Survey

Default Visibility: true

MaxRecordCount: 10000

Supported Query Formats: JSON, AMF, geoJSON

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: true

Can Scale Symbols: false

Extent:
Drawing Info: Advanced Query Capabilities:
HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeNone

Type ID Field: null

Fields:
Supported Operations:   Query   Generate Renderer   Return Updates