Title
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Plateau geomorphic feature layer |
Date
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2013-06-05 |
Date type
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Creation: Date identifies when the resource was brought into existence
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Date
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2014-02-14 |
Date type
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Publication: Date identifies when the resource was issued
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Edition
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Version 1 |
Code
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6edb6c8f-3660-4caf-b768-4fcb759fdc48 |
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Presentation form
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Digital map: Map represented in raster or vector form
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Abstract
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The plateau geomorphic feature layer represents the spatial extent of the plateaus 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). Plateaus are “flat or nearly flat elevations of considerable areal extent, dropping off
abruptly on one or more sides” (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.
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Purpose
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The plateau geomorphic feature layer represents the spatial extent of the plateaus 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.
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Credit
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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)
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Maintenance and update frequency
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Irregular: Data is updated in intervals that are uneven in duration
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Descriptive keywords
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Geology (theme). |
Descriptive keywords
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global (place). |
Descriptive keywords
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seafloor, geomorphic features, habitats (theme). |
Descriptive keywords
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Downloadable Data . |
Use limitation
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The global seafloor geomorphic feature map is available for download from bluehabitats.org |
Access constraints
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Other restrictions: Limitation not listed
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Other constraints
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no limitations |
Spatial representation type
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Vector: Vector data is used to represent geographic data
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Character set
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UTF8: 8-bit variable size UCS Transfer Format, based on ISO/IEC 10646
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Topic category code
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Oceans |
Environment description
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Microsoft Windows 7 Version 6.1 (Build 7601) Service Pack 1; ESRI ArcGIS 10.0.4.4000 |
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