Product catalogue
Benthic Position Index Grid of Darwin Harbour
The Benthic (Topographic) Position Index (Weiss 2001) grid indicates the topographic positions of the cells. Positive TPI values represent locations that are higher than the average of their surrounding (ridges); negative TPI values represent locations that are lower than their surrounding (valleys); TPI values near zero are either flat areas or areas of constant slope. The benthic position index grid was derived from the bathymetry grid of Darwin Harbour. Please see the metadata of the bathymety grid for more details (GeoCat No: 74915).
Weiss, A.D., 2001. Topographic position and landforms analysis. In: ESRI international user
conference, 9-13 July 2001, San Diego, CA.
Simple
Identification info
- Date (Publication)
- 2013-01-01T00:00:00
- Date (Revision)
- 2019-05-09T06:15:24
- Date (Revision)
- 2019-05-09T06:26:06
- Citation identifier
- Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/75392
- Citation identifier
- Digital Object Identifier/http://dx.doi.org/10.4225/25/562EC934ADC84
- Cited responsible party
-
Role Organisation / Individual Name Details Publisher Geoscience Australia
Canberra Author Huang, Z.
1
- Point of contact
-
Role Organisation / Individual Name Details Custodian EGD
Owner Commonwealth of Australia (Geoscience Australia)
Custodian Commonwealth of Australia (Geoscience Australia)
Voice
- Topic category
-
- Oceans
Extent
))
Temporal extent
- Time period
- 2013-02-23 2013-02-23
- Maintenance and update frequency
- Not planned
- Keywords
-
-
Marine Data
-
Bathymetry Grid
-
- Theme
-
-
bathymetry
-
- Theme
-
-
marine
-
- Keywords
-
-
AU-NT
-
- Australian and New Zealand Standard Research Classification (ANZSRC)
-
-
Marine Geoscience
-
- Keywords
-
-
Published_External
-
Resource constraints
- Title
-
Creative Commons Attribution 4.0 International Licence
- Alternate title
-
CC-BY
- Edition
-
4.0
- Access constraints
- License
- Use constraints
- License
Resource constraints
- Title
-
Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
- Language
- English
- Character encoding
- UTF8
Distribution Information
- Distributor contact
-
Role Organisation / Individual Name Details Distributor Commonwealth of Australia (Geoscience Australia)
Voice
- OnLine resource
-
File download
Download the file (ArcGIS-grid)
Resource lineage
- Statement
-
The equation used for the calculation of the benthic position index grid is:
tpi = bathy - focalmean(bathy, rectangle, 3, 3) where bathy is the bathymety grid; focalmean() function is avaiable in ArcGIS.
- Hierarchy level
- Dataset
- Description
-
NERP Marine Biodiversity Hub
Extent
))
Reference System Information
- Reference system identifier
- EPSG/WGS 84 / UTM zone 52S (EPSG:32752)
Metadata constraints
- Title
-
Australian Government Security ClassificationSystem
- Edition date
- 2018-11-01T00:00:00
- Classification
- Unclassified
Metadata
- Metadata identifier
-
urn:uuid/d69466d6-1553-490e-e044-00144fdd4fa6
- Title
-
GeoNetwork UUID
- Language
- English
- Character encoding
- UTF8
- Contact
-
Role Organisation / Individual Name Details Point of contact Commonwealth of Australia (Geoscience Australia)
Voice
Type of resource
- Resource scope
- Dataset
- Name
-
dataset
Alternative metadata reference
- Title
-
Geoscience Australia - short identifier for metadata record with
uuid
- Citation identifier
- eCatId/75392
- Date info (Revision)
- 2018-04-22T08:35:31
- Date info (Creation)
- 2013-02-26T00:00:00
Metadata standard
- Title
-
AU/NZS ISO 19115-1:2014
Metadata standard
- Title
-
ISO 19115-1:2014
Metadata standard
- Title
-
ISO 19115-3
- Title
-
Geoscience Australia Community Metadata Profile of ISO 19115-1:2014
- Edition
-
Version 2.0, September 2018
- Citation identifier
- https://pid.geoscience.gov.au/dataset/ga/122551