Name: Plateaus

Display Field: geomorphic

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The </SPAN><SPAN>plateau </SPAN><SPAN>geomorphic feature layer represents the spatial extent of the </SPAN><SPAN>plateau</SPAN><SPAN>s of the worlds oceans based on interpretation of the SRTM30 plus v7 global bathymetry model. The layer is one of the 25 layers that make up the global seafloor geomorphic features map (Harris et.al. 2014). </SPAN><SPAN><SPAN>Plateaus are “</SPAN></SPAN><SPAN><SPAN>flat or nearly flat elevations of considerable areal extent, d</SPAN></SPAN><SPAN><SPAN>ropping off abruptly on one or more sides”</SPAN></SPAN><SPAN><SPAN> (IHO, 2008). Plateaus were digitised by hand based on 100 m contours. In areas where plateaus abut the margin, the foot of slope was allowed to flow offshore to encompass the plateau feature, where a clear seaward dipping gradient was apparent. In other locations marginal plateaus are distinctly separate from the continental slope and form isolated, raised platforms. The geomorphic features map of Agapova et al (1979) and the GEBCO Gazetteer of geographic names of undersea features were used to ensure all named features were included.</SPAN></SPAN></P></DIV></DIV></DIV>

Service Item Id: ab9877e84b514604a5e20874622aa095

Copyright Text: The global seafloor geomorphic features map has been produced through a collaboration between Geoscience Australia, GRID-Arendal and Conservation International. Reference: Harris et. al. (2014) Geomorphology of the oceans.Marine Geology (in Press)

Default Visibility: true

MaxRecordCount: 1000

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Supported Query Formats: JSON, geoJSON, PBF

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Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: false

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Use Standardized Queries: true

Supports Datum Transformation: true

Extent:

XMin: -2.00375070672E7
YMin: -1.2249771777800001E7
XMax: 2.0037507067199998E7
YMax: 3.0240971958400004E7
Spatial Reference: 102100  (3857)

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Labeling Info:

Feature Draw Order:

N/A

Advanced Query Capabilities:

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Supports Sql Expression: true
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Supports Percentile Statistics: true
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Supports Query With Current User: true

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Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: N/A

Fields:

• objectid ( nullable: false, alias: objectid, type: esriFieldTypeOID )
• geomorphic ( nullable: true, length: 20, alias: Geomorphic, type: esriFieldTypeString )
• area_km2 ( nullable: true, alias: area_km2, type: esriFieldTypeDouble )
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Supported Operations:   Query   Query Attachments   Query Analytic   Generate Renderer   Return Updates

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