Full description
This metadata record is a modified child record of an original parent record originating from custodians of data associated with Geoscience Australia (The identifier of the parent record is ANZCW0703009248, and can be found on the Australian Spatial Data Directory website - see the URL given below).Taken from the report:
A bathymetric grid of the Heard Island-Kerguelen Plateau Region (Longitudes 68 degrees E - 80 degrees E, Latitudes 48 degrees S - 56 degrees S) is produced. In doing so, the individual datasets used have been closely examined and any deficiencies noted for further follow up or have been rectified immediately and the changes documented. These datasets include modern multibeam data, coastline data obtained from the World Vector Shoreline, echosounder data from research, fishing and Customs vessels and satellite derived bathymetric data.
A hierarchical system was employed whereby the best and most extensive datasets were gridded first and applied as a mask to the next best dataset. A new masking grid would be formed from these datasets to pass non-overlapping data in the next best dataset. This procedure was employed until finally the satellite data were masked. All the various levels of masked data were then brought together by the gridding algorithm (Intrepid - Desmond Fitzgerald Associates) and an ERMapper format grid produced.
A grid cell size of 0.005 degrees (nominal 500m) was used with many iterations of minimum curvature gridding and several passes of smoothing.
The final grid is available in ERMapper, ArcInfo and ASCII xyz formats.
Lineage
Progress Code: completedData time period: 2005-06-01 to 2005-07-17
Data time period: 1956-01-01 to 2004-12-31
text: westlimit=68.0; southlimit=-56.0; eastlimit=80.0; northlimit=-48.0
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Download point for the bathymetric data (ArcInfo interchange file) (GET DATA)
uri :
http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=2262
Download point for the bathymetric data (ArcInfo ascii file) (GET DATA)
uri :
http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=2682
Download point for bathymetric data (ASCII xyz) (GET DATA)
uri :
http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=2277
Download point for the report (GET DATA)
uri :
http://data.aad.gov.au/aadc/portal/download_file.cfm?file_id=2261
Geoscience Australia Website (VIEW RELATED INFORMATION)
uri :
http://www.ga.gov.au
Citation reference for this metadata record and dataset (VIEW RELATED INFORMATION)
uri :
http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AADC_Heard_bathy_grid
- global : AADC_Heard_bathy_grid