Title
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Spreading ridges 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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d3b04f70-53aa-4152-a574-2f627d75b6a0 |
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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 spreading ridge geomorphic feature layer represents the spatial extent of the spreading ridges 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). Mid-ocean spreading ridges are “the linked major mid-oceanic mountain
systems of global extent” (IHO, 2008). Spreading ridges are distinguished from other ridges in this study (see definition
of ridges below). They were mapped by hand based on their appearance as ridge-like features that coincide with the youngest
ocean crust as mapped by Müller et al. (1997) in their “EarthByte” digital age grid of the ocean floor. Spreading ridges
that were not visible in the SRTM30_PLUS bathymetry (100 m contours) were not included in our interpretation, but there
is otherwise no size limitation on spreading ridges.
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Purpose
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The spreading ridge geomorphic feature layer represents the spatial extent of the spreading ridges 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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