Data

Darwin Harbour Habitat Mapping Program: Morphology Surfaces

Geoscience Australia
Nanson, R.
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=https://pid.geoscience.gov.au/dataset/ga/127262&rft.title=Darwin Harbour Habitat Mapping Program: Morphology Surfaces&rft.identifier=https://pid.geoscience.gov.au/dataset/ga/127262&rft.description=The seafloor morphology mapping approach used to derive this dataset follows Geoscience Australia’s draft National Seafloor GeoMorphology (NSGM) mapping scheme (Nanson and Nichol, 2018). The NSGM scheme is an extension of the Dove et al. (2016) approach, which characterises the seafloor in two sequential parts: Part 1 maps the seafloor Morphology (shape) using bathymetry data, and Part 2 uses additional data to interpret seafloor Geomorphology for those mapped morphological shapes. Part 1 of the NSGM scheme was applied to the project dataset, and consists of three hierarchical levels: Province, Surface and Feature. This dataset contains Surface shapefiles that comprise three categories: Plane (10 degrees).This dataset is published with the permission of the CEO, Geoscience AustraliaMaintenance and Update Frequency: asNeededStatement: NSGM Morphology Surfaces represent bathymetric slopes as discrete polygons. For this geomorphic study on the Darwin Habitat Mapping Project area, a 10 m bathymetric grid was resampled from the 1m resolution, primary bathymetric dataset for this project (eCat 127094). From the 10 m bathymetric grid a 10 m slope grid was created. The NSGM Morphology Surfaces were derived by applying a Majority Filter (ArcGIS) to the resampled 10m bathymetry slope grid. The majority of the study area Surfaces are low gradient Plane (95.9%), with minor proportions of the grid as Slope (4.0%) and Escarpment (0.1%). .&rft.creator=Nanson, R. &rft.date=2019&rft.coverage=westlimit=130.25; southlimit=-12.725; eastlimit=131.2; northlimit=-12.125&rft.coverage=westlimit=130.25; southlimit=-12.725; eastlimit=131.2; northlimit=-12.125&rft_rights=&rft_rights=Creative Commons Attribution 4.0 International Licence&rft_rights=CC-BY&rft_rights=4.0&rft_rights=http://creativecommons.org/licenses/&rft_rights=Australian Government Security ClassificationSystem&rft_rights=https://www.protectivesecurity.gov.au/Pages/default.aspx&rft_rights=WWW:LINK-1.0-http--link&rft_rights=Creative Commons Attribution 4.0 International Licence http://creativecommons.org/licenses/by/4.0&rft_subject=geoscientificInformation&rft_subject=seabed geomorphology&rft_subject=Published_External&rft.type=dataset&rft.language=English Access the data
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CC-BY

Creative Commons Attribution 4.0 International Licence
http://creativecommons.org/licenses/by/4.0

Creative Commons Attribution 4.0 International Licence

CC-BY

4.0

http://creativecommons.org/licenses/

Australian Government Security ClassificationSystem

https://www.protectivesecurity.gov.au/Pages/default.aspx

WWW:LINK-1.0-http--link

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Open

Contact Information

clientservices@ga.gov.au

Brief description

The seafloor morphology mapping approach used to derive this dataset follows Geoscience Australia’s draft National Seafloor GeoMorphology (NSGM) mapping scheme (Nanson and Nichol, 2018). The NSGM scheme is an extension of the Dove et al. (2016) approach, which characterises the seafloor in two sequential parts: Part 1 maps the seafloor Morphology (shape) using bathymetry data, and Part 2 uses additional data to interpret seafloor Geomorphology for those mapped morphological shapes. Part 1 of the NSGM scheme was applied to the project dataset, and consists of three hierarchical levels: Province, Surface and Feature. This dataset contains Surface shapefiles that comprise three categories: Plane (<2 degrees), Slope (2-10 degrees) and Escarpment (>10 degrees).This dataset is published with the permission of the CEO, Geoscience Australia

Lineage

Maintenance and Update Frequency: asNeeded
Statement: NSGM Morphology Surfaces represent bathymetric slopes as discrete polygons. For this geomorphic study on the Darwin Habitat Mapping Project area, a 10 m bathymetric grid was resampled from the 1m resolution, primary bathymetric dataset for this project (eCat 127094). From the 10 m bathymetric grid a 10 m slope grid was created. The NSGM Morphology Surfaces were derived by applying a Majority Filter (ArcGIS) to the resampled 10m bathymetry slope grid. The majority of the study area Surfaces are low gradient Plane (95.9%), with minor proportions of the grid as Slope (4.0%) and Escarpment (0.1%).
.

Created: 26 02 2019

Issued: 15 01 2020

Data time period: 2011 to 2017

This dataset is part of a larger collection

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131.2,-12.125 131.2,-12.725 130.25,-12.725 130.25,-12.125 131.2,-12.125

130.725,-12.425

text: westlimit=130.25; southlimit=-12.725; eastlimit=131.2; northlimit=-12.125

Subjects
Published_External | geoscientificInformation | seabed geomorphology |

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Other Information
Download the data (shp) [1 MB]

uri : https://d28rz98at9flks.cloudfront.net/127262/127262_00_0.zip

Link to collection record

uri : https://pid.geoscience.gov.au/dataset/ga/127494

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