The Creation of High Resolution Bathymetry Grids for Cocos (Keeling) Island

Cocos (Keeling) Island is located approximately 3,685km almost due west of Darwin. It is a mid-ocean atoll with a coral reef, and a very shallow (1 - 20 m) shelf surrounds the island. Bathymetry data are required in this area to help identify major seabed processes and habitats. The data are also required to enable modelling of tsunami as they interact with the shelf around the island and the coast. This report describes the methodology employed in creating detailed bathymetry data grids of the Cocos (Keeling) Island region. It covers data collection, quality control and gridding. Descriptions are provided of each dataset employed, the methods used to integrate the different datasets and the attributes of the new bathymetry models. Four new bathymetry grids are presented, including grids that integrate bathymetry with the island's topography.<p><p>This dataset is not to be used for navigational purposes.

Simple

Identification info

Date (Publication)
2010-01-01T00:00:00
Citation identifier
Geoscience Australia Persistent Identifier/https://pid.geoscience.gov.au/dataset/ga/70663

Cited responsible party
Role Organisation / Individual Name Details
Publisher

Geoscience Australia

 Canberra
Author

Mleczko, R.

 1
Author

Sagar, S.

 2
Name

Record

Issue identification

2010/038

ISBN

9781921781438

Point of contact
Role Organisation / Individual Name Details
Owner

Commonwealth of Australia (Geoscience Australia)
Custodian

Commonwealth of Australia (Geoscience Australia)

 Voice
Point of contact

Spinoccia, M.

 Place and Communities Internal Contact
Topic category
  • Geoscientific information

Extent

N
S
E
W


Maintenance and update frequency
As needed

Resource format

Title

Product data repository: Various Formats

Website

Data Store directory containing the digital product files

Data Store directory containing one or more files, possibly in a variety of formats, accessible to Geoscience Australia staff only for internal purposes

Australian and New Zealand Standard Research Classification (ANZSRC)

  • Earth Sciences

Keywords

  • HVC_144641

Project

  • AusSeabed

Keywords

  • GA Publication Record

Theme

  • 3D model

Theme

  • DEM

Theme

  • bathymetry

Theme

  • multibeam

Theme

  • seabed

Theme

  • marine

Keywords

  • CC

Keywords

  • Published_External

Instrument

  • Compilation

Instrument

  • Multibeam

Instrument

  • Satellite-Derived

Instrument

  • Chart-Derived

Instrument

  • Singlebeam

Resource constraints

Title

Creative Commons Attribution 4.0 International Licence

Alternate title

CC-BY

Edition

4.0

Website

http://creativecommons.org/licenses/

Access constraints
License
Use constraints
License

Resource constraints

Title

Australian Government Security ClassificationSystem

Edition date
2018-11-01T00:00:00
Website

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

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

Download the Record (pdf)

Download the Record (pdf)

Distribution format

  • pdf

OnLine resource

Cocos Island Bathymetry 2010 10m-250m (zip) [27.4 MB]

Cocos Island Bathymetry 2010 10m-250m (zip) [27.4 MB]

Distribution format

  • zip

    File decompression technique

    unzip

Resource lineage

Statement

The grids are derived from data in Geoscience Australia databases and recent sources which will eventually be entered into those databases. Satellite derived bathymetry was used in shallow waters. Two swath datasets acquired between 2003 and 2008 were used. Both surveys supply extensive regional coverage. A high quality coastline, as well as topography data of Cocos and its islands were obtained from the GEMD GIS. Eleven singlebeam surveys from the GA MARDAT database. These data range in vintage from 1965 to 2000 and were edited to remove suspect datapoints, but were left uncorrected with regards speed of sound issues. Chart data from the AHS was used in both deep and shallow water. One singlebeam survey commissioned by DoTaRS that was previously unknown to GA was used.

Hierarchy level
Non geographic dataset
Other

GA Publication

Description

Source data not available.

Metadata constraints

Title

Australian Government Security ClassificationSystem

Edition date
2018-11-01T00:00:00
Website

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

Classification
Unclassified

Metadata

Metadata identifier
urn:uuid/a05f7892-f85b-7506-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
Document
Name

GA publication: Record

Alternative metadata reference

Title

Geoscience Australia - short identifier for metadata record with

uuid

Citation identifier
eCatId/70663

Metadata linkage

https://ecat.ga.gov.au/geonetwork/srv/eng/catalog.search#/metadata/a05f7892-f85b-7506-e044-00144fdd4fa6

Date info (Revision)
2018-04-20T06:19:38
Date info (Creation)
2010-07-02T00:00:00

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

 
 

Spatial extent

N
S
E
W


Keywords

3D model AusSeabed CC Chart-Derived Compilation DEM GA Publication Record HVC_144641 Multibeam Published_External Satellite-Derived Singlebeam bathymetry marine multibeam seabed

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