View In:   ArcGIS Online Map Viewer

Name: Trenches

Display Field: geomorphic

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The </SPAN><SPAN>trench </SPAN><SPAN>geomorphic feature layer represents the spatial extent of the </SPAN><SPAN>trenches</SPAN><SPAN> 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>Trenches are “a long narrow, characteristically very deep and asymmetrical depression of the sea floor, with relatively steep sides”</SPAN></SPAN><SPAN><SPAN> (IHO, 2008)</SPAN></SPAN><SPAN><SPAN>. Trenches are generally distinguished from troughs by their “V”</SPAN></SPAN><SPAN><SPAN> shape in cross section (in contrast with flat-bottomed troughs). In this study trenches were mapped by selecting closed bathymetric contours that defined basins contained within the trench feature, and then joining the basin segments together by hand digitizing along more elevated sections. In this way, bridge features were also identified</SPAN></SPAN><SPAN><SPAN> (as coinciding with infilled sections of trenches; see section on “bridges”</SPAN></SPAN><SPAN><SPAN>). </SPAN></SPAN></P></DIV></DIV></DIV>

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

MaxSelectionCount: 0

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0.0

Max Scale: 0.0

Supports Advanced Queries: true

Supports Statistics: true

Can Scale Symbols: false

Use Standardized Queries: true

Supports ValidateSQL: true

Supports Calculate: true

Supports Datum Transformation: true

Extent:

XMin: -2.00375070672E7
YMin: -8640229.460900001
XMax: 2.0037507067199998E7
YMax: 7464717.378399998
Spatial Reference: 102100  (3857)

Drawing Info:

Renderer:
Simple Renderer:
Symbol:
Style: esriSFSSolid
Color: [191, 252, 242, 255]
Outline:
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Color: [110, 110, 110, 255]
Width: 0
Label: N/A
Description: N/A
Transparency: 0
Labeling Info:

Feature Draw Order:

N/A

Advanced Query Capabilities:

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Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports TrueCurve: true
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: true
Supports Returning Geometry Centroid: true
Supports Binning LOD: false
Supports Query With LOD Spatial Reference: false
Supports Percentile Statistics: true
Supports Having Clause: true
Supports Count Distinct: true
Supports Time Relation: false
Supports Sql Format: false
Supports Query Analytic: true
Supports Query With Current User: true

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field:

Fields:

• objectid ( modelName: objectid, nullable: false, editable: false, defaultValue: N/A, alias: objectid, type: esriFieldTypeOID )
• geomorphic ( modelName: geomorphic, nullable: true, editable: true, defaultValue: N/A, length: 20, alias: Geomorphic, type: esriFieldTypeString )
• area_km2 ( modelName: area_km2, nullable: true, editable: true, defaultValue: N/A, alias: area_km2, type: esriFieldTypeDouble )
• srmn ( modelName: srmn, nullable: true, editable: true, defaultValue: N/A, alias: srMN, type: esriFieldTypeDouble )
• Shape__Area ( modelName: st_area(shape), nullable: true, editable: false, defaultValue: N/A, alias: st_area(shape), type: esriFieldTypeDouble, required: true )
• Shape__Length ( modelName: st_length(shape), nullable: true, editable: false, defaultValue: N/A, alias: st_length(shape), type: esriFieldTypeDouble, required: true )

Templates:

• Name: Trenches
  Description:
  Prototype:
  srmn: null
  geomorphic: null
  area_km2: null
  
  Drawing Tool: esriFeatureEditToolPolygon

Capabilities: Query

Sync Can Return Changes: false

Is Data Versioned: false

Supports Rollback On Failure: true

Supports ApplyEdits With Global Ids: false

Supports Query With Historic Moment: false

Supports Coordinates Quantization: true

Child Resources:

Supported Operations:   Query   Query Analytic   Append   Validate SQL   Generate Renderer   Return Updates   Iteminfo   Thumbnail   Metadata