Authors / CoAuthors
Abstract
No abstract available
Product Type
dataset
eCat Id
63465
Contact for the resource
Custodian
Point of contact
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
Keywords
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- GIS Dataset
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_Internal
Publication Date
2005-04-13T00:00:00
Creation Date
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Purpose
Maintenance Information
asNeeded
Topic Category
geoscientificInformation
Series Information
Lineage
The Sedimentary Facies were defined in 2004 as part of a program run by Geoscience Australia, CSIRO and Marine Research and the National Oceans Office to create a spatial inventory of large-scale benthic biogeographical regions for Australia's Exclusive Economic Zone. The geomorphic datasets used in the derivation of the sedimentary facies came from the geomorphic features map completed in 2002 by Geoscience Australia (Harris et al., 2005). The sedimentary data (mean grain size, %Gravel, %Mud and %CaCO3) were compiled from approximately 7,800 samples from the continental shelf contained in Geoscience Australia's MARine Sediments (MARS) database (Passlow et al., 2005), except for CaCO3 which was derived from approximately 4,500 samples. The oceanographic data (wave- and tide-exceedance, mean wave energy and maximum tidal current speed) were derived from the latest version of Geoscience Australia's sediment mobility model GEOMAT (Harris et al., 2000). Not all the data are available for all of the shelf areas and analyses were carried out for four separate regions. The input datasets were clustered into sedimentary facies for each region using an unsupervised ISOCLASS algorithm in the spatial analysis software package ERMapper®. When the cluster analysis was completed, the boundaries defining the polygons in each of the sedimentary facies were stored as an ARC/GIS shape file.
Parent Information
Extents
[-45.0, -9.0, 110.0, 145.0]
Reference System
Spatial Resolution
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