20250725
14351500
1.0
FALSE
ebu_polygons_SummarizeWithin
-176.840644
178.681674
-76.753506
88.441597
1
0.175
002
https://www.arcgis.com/sharing/rest/content/items/753dda86f070474eb8e5e8c8f9e897b2/info/thumbnail/ago_downloaded.png
Geographic
GCS_WGS_1984
Angular Unit: Degree (0.017453)
<GeographicCoordinateSystem xsi:type='typens:GeographicCoordinateSystem' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:xs='http://www.w3.org/2001/XMLSchema' xmlns:typens='http://www.esri.com/schemas/ArcGIS/3.5.0'><WKT>GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433],AUTHORITY["EPSG",4326]]</WKT><XOrigin>-400</XOrigin><YOrigin>-400</YOrigin><XYScale>1111948722.2222221</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>8.983152841195215e-09</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><LeftLongitude>-180</LeftLongitude><WKID>4326</WKID><LatestWKID>4326</LatestWKID></GeographicCoordinateSystem>
20250724
19144300
20250724
19144300
INSPIRE
Miles Macmillan-Lawler
GRID-Arendal
Miles.Macmillan-Lawler@grida.no
Sill geomorphic feature layer
vector digital data
2013-06-05T00:00:00
2014-02-14T00:00:00
Version 1
Miles Macmillan-Lawler
GRID-Arendal
Miles.Macmillan-Lawler@grida.no
Global Coverage
Ecological Benthic Units
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The </SPAN><SPAN>sill </SPAN><SPAN>geomorphic feature layer represents the spatial extent of the </SPAN><SPAN>sills</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>Sills are “</SPAN></SPAN><SPAN><SPAN>a sea floor barrier of relatively shallow depth re</SPAN></SPAN><SPAN><SPAN>stricting water movement between basins”</SPAN></SPAN><SPAN><SPAN> (IHO, 2008). Thus every basin has a sill, over which fluid would escape if the basin were filled to overflowing. The identification of sills in this study is based on selecting contours at a specified interval of 10 m (shelf except for Antarctica), 50 m (Antarctic shelf) or 100 m (all other areas) depending upon the location. Selecting the most shoal, closed contour defines the basin; one contour interval above this typically identifies a discrete location where c</SPAN></SPAN><SPAN><SPAN>ontours “escape”</SPAN></SPAN><SPAN> from the basin and join into the regional bathymetry. This location is mapped as the sill. Sills were mapped for all of the major ocean basins and seas and for the larger basins perched on the continental shelf; sills were not mapped for the smaller basins perched on the slope or shelf or for the smaller abyssal basins.</SPAN></P></DIV></DIV></DIV>
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)
global
seafloor
geomorphology
geomorphic feature
habitat
ebu
exu
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The global seafloor geomorphic feature map is available for download from bluehabitats.org</SPAN></P></DIV></DIV></DIV>
seafloor, geomorphic features, habitats
global
Miles Macmillan-Lawler
GRID-Arendal
Miles.Macmillan-Lawler@grida.no
Esri ArcGIS 13.5.2.57366
1
-176.840644
178.681674
88.441597
-76.753506
ebu_polygons_SummarizeWithin
Feature Class
0
The polygons represent the boundaries for the continents of the world.
ESRI
OBJECTID
OBJECTID
OID
4
0
0
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
Shape
Shape
Geometry
0
0
0
Feature geometry.
ESRI
Coordinates defining the features.
Geomorphic
Geomorphic
String
512
0
0
group_cluster
group_cluster
String
3
0
0
geodesic_area_km2
geodesic_area_km2
Double
8
0
0
Description
Description
String
255
0
0
MAJORITY
MAJORITY
Integer
4
0
0
MAJORITY_PERCENT
MAJORITY_PERCENT
Single
4
0
0
ebu_type
ebu_type
String
512
0
0
Shape_Length
Shape_Length
Double
8
0
0
Length of feature in internal units.
Esri
Positive real numbers that are automatically generated.
Shape_Area
Shape_Area
Double
8
0
0
Area of feature in internal units squared.
Esri
Positive real numbers that are automatically generated.
File Geodatabase Feature Class
0.175
dataset
EPSG
6.2(3.0.1)
0
Simple
FALSE
0
TRUE
FALSE
20250724
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