Data

Bathymetric grid of Macquarie Island Region (2004)

Australian Antarctic Data Centre
SEXTON, MIKE ; TULLY, MORGAN ; SMITH, DAVID T. ; BROLSMA, HENK
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://data.aad.gov.au/metadata/records/AADC_Macquarie_bathy_grid&rft.title=Bathymetric grid of Macquarie Island Region (2004)&rft.identifier=https://data.aad.gov.au/metadata/records/AADC_Macquarie_bathy_grid&rft.publisher=Australian Antarctic Data Centre&rft.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 ANZCW0703006701, and can be found on the Australian Spatial Data Directory website - see the URL given below). A bathymetric grid of the Macquarie Island Region (Longitudes 151 E and 167 E, Latitudes 48 S and 62 S) was produced. In doing so, the individual datasets used were closely examined and any deficiencies noted for further follow up or were rectified immediately and the changes documented. These datasets include modern multibeam data, coastline data obtained from georeferenced SPOT imagery, hydrographic quality data, echosounder data from research and fishing 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 and Desmond Fitzgerald Associates) and an ERMapper format grid produced. A grid cell size of 0.00225 (nominal 250m) was used with many iterations of minimum curvature gridding and several passes of smoothing. The final grid is available in geotiff, ArcInfo ascii and xyz text formats. A detailed report of the work completed is also available.&rft.creator=SEXTON, MIKE &rft.creator=TULLY, MORGAN &rft.creator=SMITH, DAVID T. &rft.creator=BROLSMA, HENK &rft.date=2007&rft.coverage=northlimit=-48.0; southlimit=-62.0; westlimit=151.0; eastLimit=167.0; projection=WGS84&rft.coverage=northlimit=-48.0; southlimit=-62.0; westlimit=151.0; eastLimit=167.0; projection=WGS84&rft_rights=This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). When using these data, Geoscience Australia must be acknowledged. If the data were obtained from the Australian Antarctic Data Centre, that must also be acknowledged (Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AADC_Macquarie_bathy_grid when using these data).&rft_subject=oceans&rft_subject=WATER DEPTH&rft_subject=EARTH SCIENCE&rft_subject=OCEANS&rft_subject=BATHYMETRY/SEAFLOOR TOPOGRAPHY&rft_subject=MARINE GEOPHYSICS&rft_subject=BATHYMETRY&rft_subject=Macquarie Island&rft_subject=bathymetry&rft_subject=swath&rft_subject=grid&rft_subject=depth&rft_subject=MSBS > Multibeam Swath Bathymetry System&rft_subject=SHIPS&rft_subject=SATELLITES&rft_subject=OCEAN > SOUTHERN OCEAN&rft_subject=OCEAN > SOUTHERN OCEAN > MACQUARIE ISLAND&rft_subject=GEOGRAPHIC REGION > POLAR&rft_place=Hobart&rft.type=dataset&rft.language=English Access the data
Cite Saved to MyRDA Save to MyRDA

Licence & Rights:

view details

This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/). When using these data, Geoscience Australia must be acknowledged. If the data were obtained from the Australian Antarctic Data Centre, that must also be acknowledged (Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AADC_Macquarie_bathy_grid when using these data).

Access:

Other view details

Data are stored in digital format - ER Mapper raster dataset Geographic WGS84. Data are available in digital format from the provided URLs - geotiff Geographic WGS84 ArcInfo ascii Geographic WGS84 text file in x,y,z format Geographic WGS84. The report is also available from a provided URL.

Brief 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 ANZCW0703006701, and can be found on the Australian Spatial Data Directory website - see the URL given below). A bathymetric grid of the Macquarie Island Region (Longitudes 151 E and 167 E, Latitudes 48 S and 62 S) was produced. In doing so, the individual datasets used were closely examined and any deficiencies noted for further follow up or were rectified immediately and the changes documented. These datasets include modern multibeam data, coastline data obtained from georeferenced SPOT imagery, hydrographic quality data, echosounder data from research and fishing 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 and Desmond Fitzgerald Associates) and an ERMapper format grid produced. A grid cell size of 0.00225 (nominal 250m) was used with many iterations of minimum curvature gridding and several passes of smoothing. The final grid is available in geotiff, ArcInfo ascii and xyz text formats. A detailed report of the work completed is also available.

Issued: 2007-02-20

Data time period: 2004-03-01 to 2004-06-01

Data time period: 1994-01-01 to 2003-12-31

This dataset is part of a larger collection

Click to explore relationships graph
Help

Related Organisations

Related People

167,-48 167,-62 151,-62 151,-48 167,-48

159,-55

text: northlimit=-48.0; southlimit=-62.0; westlimit=151.0; eastLimit=167.0; projection=WGS84

Subjects
BATHYMETRY | BATHYMETRY/SEAFLOOR TOPOGRAPHY | EARTH SCIENCE | GEOGRAPHIC REGION > POLAR | MARINE GEOPHYSICS | MSBS > Multibeam Swath Bathymetry System | Macquarie Island | OCEAN > SOUTHERN OCEAN | OCEAN > SOUTHERN OCEAN > MACQUARIE ISLAND | OCEANS | SATELLITES | SHIPS | WATER DEPTH | bathymetry | depth | grid | oceans | swath |

User Contributed Tags    

Login to tag this record with meaningful keywords to make it easier to discover

Identifiers
Similar data you may be interested in: