b4de850e-dd77-11eb-a512-0242c0a82008 eng utf8 dataset Seascape Belgium Marine Data & GIS Specialist Oostende 8400 BEL tim.collart@seascapebelgium.be pointOfContact Seascape Belgium Marine Data & GIS Specialist Oostende 8400 BEL tim.collart@seascapebelgium.be author 2022-02-22T14:49:18Z ISO 19115:2003 - Geographic information - Metadata ISO 19115:2003 4326 EPSG 6.11 geonode:Troughs Trough geomorphic feature layer 2014-02-05T00:00:00Z publication mapDigital The trough geomorphic feature layer represents the spatial extent of the troughs 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 IHO (IHO, 2008) definition of a trough is “a long depression of the sea floor characteristically flat bottomed and steep sided and normally shallower than a trench”. In this study we found that troughs are also commonly open at one end (i.e. not defined by closed bathymetric contours) and their broad, flat floors may exhibit a continuous gradient along a thalweg. Troughs may originate from glacial erosion processes or have formed through tectonic processes. In this study, glacial troughs incised into the shelf are a separate category; here we include all troughs not of a glacial origin, typically superimposed on the slope and/or abyssal base layers. Trenches that have been infilled with sediment may evolve into troughs, as appears to have occurred in troughs adjacent to North and South America, for example. Slumping on the sides of some troughs has formed a bridge across the trough, thereby dividing it into two separate sections (see “bridges” below). In this study all troughs were digitised by hand based on the interpretation of 100 m bathymetric contours. The trough geomorphic feature layer represents the spatial extent of the troughs 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. completed jesse.cleary@duke.edu originator http://www.geonode.iatlantic.eu/uploaded/thumbs/layer-b4de850e-dd77-11eb-a512-0242c0a82008-thumb.png Thumbnail for 'Trough geomorphic feature layer' image/png ESRI Shapefile 1.0 Downloadable Data features seafloor, geomorphic features, habitats Troughs theme Global place license Creative Commons Attribution 4.0 International (CC BY 4.0): This is a human-readable summary of (and not a substitute for) the license. Disclaimer. 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(https://creativecommons.org/licenses/by/4.0/) no limitations on public access eng utf8 oceans -180.0 180.0 -71.9051437378 89.0493850708 No information provided https://www.geonode.iatlantic.eu WWW:LINK-1.0-http--link Online link to the 'Trough geomorphic feature layer' description on GeoNode http://www.geonode.iatlantic.eu/uploaded/thumbs/layer-b4de850e-dd77-11eb-a512-0242c0a82008-thumb.png WWW:DOWNLOAD-1.0-http--download .png Trough geomorphic feature layer (Thumbnail Format) http://www.geonode.iatlantic.eu/geoserver/ows?layers=geonode:Troughs&crs=EPSG:4326&service=WMS&format=image/png8&access_token=uz5AggFg6sUvuYFlVSvVlqi3la0u2t&request=GetMap&height=180&width=240&version=1.1.1&bbox=-180.000000000000000,-71.905143737793000,180.000000000000000,89.049385070800800 WWW:DOWNLOAD-1.0-http--download .png Trough geomorphic feature layer (Remote Thumbnail Format) http://www.geonode.iatlantic.eu/geoserver/ows?service=WMS&request=GetLegendGraphic&format=image/png&WIDTH=20&HEIGHT=20&LAYER=geonode:Troughs&STYLE=Troughs&legend_options=fontAntiAliasing:true;fontSize:12;forceLabels:on WWW:DOWNLOAD-1.0-http--download .png Trough geomorphic feature layer (Legend Format) http://www.geonode.iatlantic.eu/geoserver/ows?srsName=EPSG%3A4326&outputFormat=json&service=WFS&srs=EPSG%3A4326&request=GetFeature&typename=geonode%3ATroughs&version=1.0.0 WWW:DOWNLOAD-1.0-http--download .json Trough geomorphic feature layer (GeoJSON Format) http://www.geonode.iatlantic.eu/geoserver/ows?outputFormat=excel&service=WFS&srs=EPSG%3A4326&request=GetFeature&typename=geonode%3ATroughs&version=1.0.0 WWW:DOWNLOAD-1.0-http--download .excel Trough geomorphic feature layer (Excel Format) http://www.geonode.iatlantic.eu/geoserver/ows?outputFormat=csv&service=WFS&srs=EPSG%3A4326&request=GetFeature&typename=geonode%3ATroughs&version=1.0.0 WWW:DOWNLOAD-1.0-http--download .csv Trough geomorphic feature layer (CSV Format) http://www.geonode.iatlantic.eu/geoserver/ows?outputFormat=text%2Fxml%3B+subtype%3Dgml%2F3.1.1&service=WFS&srs=EPSG%3A4326&request=GetFeature&typename=geonode%3ATroughs&version=1.0.0 WWW:DOWNLOAD-1.0-http--download .gml Trough geomorphic feature layer (GML 3.1.1 Format) http://www.geonode.iatlantic.eu/geoserver/ows?outputFormat=gml2&service=WFS&srs=EPSG%3A4326&request=GetFeature&typename=geonode%3ATroughs&version=1.0.0 WWW:DOWNLOAD-1.0-http--download .gml Trough geomorphic feature layer (GML 2.0 Format) http://www.geonode.iatlantic.eu/geoserver/ows?outputFormat=SHAPE-ZIP&service=WFS&srs=EPSG%3A4326&request=GetFeature&format_options=charset%3AUTF-8&typename=geonode%3ATroughs&version=1.0.0 WWW:DOWNLOAD-1.0-http--download .zip Trough geomorphic feature layer (Zipped Shapefile Format) http://www.geonode.iatlantic.eu/geoserver/ows?layers=geonode%3ATroughs&service=WMS&format=image%2Fpng&request=GetMap&height=550&width=550&bbox=-180.000000000000000%2C-71.905143737793000%2C180.000000000000000%2C89.049385070800800&srs=EPSG%3A4326 WWW:DOWNLOAD-1.0-http--download .png Trough geomorphic feature layer (PNG Format) http://www.geonode.iatlantic.eu/geoserver/ows?layers=geonode%3ATroughs&service=WMS&format=application%2Fpdf&request=GetMap&height=550&width=550&bbox=-180.000000000000000%2C-71.905143737793000%2C180.000000000000000%2C89.049385070800800&srs=EPSG%3A4326 WWW:DOWNLOAD-1.0-http--download .pdf Trough geomorphic feature layer (PDF Format) http://www.geonode.iatlantic.eu/geoserver/ows?layers=geonode%3ATroughs&service=WMS&format=image%2Fjpeg&request=GetMap&height=550&width=550&bbox=-180.000000000000000%2C-71.905143737793000%2C180.000000000000000%2C89.049385070800800&srs=EPSG%3A4326 WWW:DOWNLOAD-1.0-http--download .jpg Trough geomorphic feature layer (JPEG Format) http://www.geonode.iatlantic.eu/download/267 WWW:DOWNLOAD-1.0-http--download .zip Trough geomorphic feature layer (Original Dataset Format) http://www.geonode.iatlantic.eu/geoserver/ows OGC:WFS geonode:Troughs Service - Provides Layer: Trough geomorphic feature layer http://www.geonode.iatlantic.eu/geoserver/ows OGC:WMS geonode:Troughs Service - Provides Layer: Trough geomorphic feature layer dataset