20130206
09044900
1.0
FALSE
Shelf
-180.000000
180.000000
-78.686972
84.207354
1
27.761
002
Projected
GCS_WGS_1984
Linear Unit: Meter (1.000000)
<ProjectedCoordinateSystem xsi:type='typens:ProjectedCoordinateSystem' 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/2.8.0'><WKT>PROJCS["WGS_1984_Web_Mercator_Auxiliary_Sphere",GEOGCS["GCS_WGS_1984",DATUM["D_WGS_1984",SPHEROID["WGS_1984",6378137.0,298.257223563]],PRIMEM["Greenwich",0.0],UNIT["Degree",0.0174532925199433]],PROJECTION["Mercator_Auxiliary_Sphere"],PARAMETER["False_Easting",0.0],PARAMETER["False_Northing",0.0],PARAMETER["Central_Meridian",0.0],PARAMETER["Standard_Parallel_1",0.0],PARAMETER["Auxiliary_Sphere_Type",0.0],UNIT["Meter",1.0],AUTHORITY["EPSG",3857]]</WKT><XOrigin>-20037700</XOrigin><YOrigin>-30241100</YOrigin><XYScale>10000</XYScale><ZOrigin>-100000</ZOrigin><ZScale>10000</ZScale><MOrigin>-100000</MOrigin><MScale>10000</MScale><XYTolerance>0.001</XYTolerance><ZTolerance>0.001</ZTolerance><MTolerance>0.001</MTolerance><HighPrecision>true</HighPrecision><WKID>102100</WKID><LatestWKID>3857</LatestWKID></ProjectedCoordinateSystem>
WGS_1984_Web_Mercator_Auxiliary_Sphere
20211006
10121600
20211006
10121600
INSPIRE
Miles Macmillan-Lawler
GRID-Arendal
Miles.Macmillan-Lawler@grida.no
Shelf 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
The shelf geomorphic feature layer represents the spatial extent of the shelf areas 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). The global seafloor geomorphic features map is intended to support ocean management including feature inventories, spatial planning and biodiversity conservation.
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The </SPAN><SPAN>shelf </SPAN><SPAN>geomorphic feature layer represents the spatial extent of the </SPAN><SPAN>shelf </SPAN><SPAN>areas 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>The continental shelf is defined by IHO (2008)</SPAN></SPAN><SPAN><SPAN>as “</SPAN></SPAN><SPAN><SPAN>a zone adjacent to a continent (or around an island) and extending from the low water line to a depth at which there is usually a mark</SPAN></SPAN><SPAN><SPAN>ed increase of slope towards oceanic depths”</SPAN></SPAN><SPAN><SPAN>. The low-water mark is taken in this study as the 0 m depth contour. The shelf break (i.e. the line along which there is marked increase of slope at the seaward margin of a shelf) was digitised manually at a nominal spatial scale of 1:500,000 in ArcGIS based on 10 m, 50 m and 100 m contours, depending on the slope and bathymetric profile of the region. In most cases 100 m contours were sufficient at the selected scale of 1:500,000 to identify the shelf break. However, where there was a gradual break in slope over a broad area, more closely spaced contours were used. Floating ice shelves cover large sections of the Antarctic continental shelf and these areas were simply left blank.</SPAN></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
shelf
habitat
<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 12.8.0.29751
1
-180.000000
180.000000
84.207354
-78.686972
Shelf
Feature Class
0
The polygons represent the boundaries for the continents of the world.
ESRI
objectid
objectid
OID
4
10
0
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
Shape
shape
Geometry
8
0
0
Feature geometry.
ESRI
Coordinates defining the features.
Geomorphic
Geomorphic
String
16
0
0
area_km2
area_km2
Double
8
38
8
st_area(shape)
st_area(shape)
Double
0
0
0
st_length(shape)
st_length(shape)
Double
0
0
0
Enterprise Geodatabase Feature Class
27.761
dataset
EPSG
6.18.3(9.3.1.2)
0
Simple
FALSE
0
TRUE
FALSE
20211006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