| snippet:
|
The seamount geomorphic feature layer represents the spatial extent of the seamounts 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. |
| summary:
|
The seamount geomorphic feature layer represents the spatial extent of the seamounts 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. |
| accessInformation:
|
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) |
| thumbnail:
|
|
| maxScale:
|
NaN |
| typeKeywords:
|
[] |
| description:
|
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>The </SPAN><SPAN>seamount </SPAN><SPAN>geomorphic feature layer represents the spatial extent of the </SPAN><SPAN>seamounts</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>Seamounts are “</SPAN></SPAN><SPAN><SPAN>a discrete (or group of) large isolated e</SPAN></SPAN><SPAN><SPAN>levation(s), greater than 1,000 m in relief above the sea floor, characteristically of conical form”</SPAN></SPAN><SPAN><SPAN> (IHO, 2008). Seamounts are thus defined as peaks that rise over 1,000 m above the seafloor, calculated based on the SRTM30_PLUS model. We adhered str</SPAN></SPAN><SPAN><SPAN>ictly to the requirement that seamounts are “of conical form”, thus distinguishing “seamounts”</SPAN></SPAN><SPAN><SPAN> (having a length/with ratio <2) from ridges (having a length/wid</SPAN></SPAN><SPAN><SPAN>th ratio ≥</SPAN></SPAN><SPAN>2). The criterion of a length/with ratio <2 for seamounts is consistent with the geomorphic analysis of Mitchell (2001). Seamounts are, furthermore, distinguished from flat-topped guyots</SPAN><SPAN>.</SPAN></P></DIV></DIV></DIV> |
| licenseInfo:
|
<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> |
| catalogPath:
|
|
| title:
|
Seamount geomorphic feature layer |
| type:
|
|
| url:
|
|
| tags:
|
["global","seafloor","geomorphology","geomorphic feature","seamount","habitat"] |
| culture:
|
en-US |
| portalUrl:
|
|
| name:
|
|
| guid:
|
|
| minScale:
|
NaN |
| spatialReference:
|
|