This consolidated dataset consists of Australian Hydrographic Service (AHS) surveys HI621A and HI545 converted to International Terrestrial Reference Frame 2000 (ITRF2000) horizontal datum with Z conversion values for multiple height datums. The data was provided to the Australian Antarctic Division by Paul Digney of Jacobs consulting in February 2021. Included survey datasets: - HI621A.shp (Validated folder) - 1812_5093-HI621A_CASEY_Terrestrial.shp - QC_HI545_12pt5_appraised All data are in horizontal datum ITRF2000 and have been combined into a single ESRI geodatabase feature class titled AHS_Surveys_Casey_ITRF2000. Attribute data shows quality information, conversion factors (shift in metres) for multiple datums and the MSL orthometric height for Casey: Column Name, Alias, Meaning Easting, Easting, Easting ITRF2000 Northing, Northing, Northing ITRF2000 CD_To_GRS8, CD_To_GRS80, LAT (Chart Datum) to the Ellipsoid CD_TO_MSL_Casey, CD_To_MSL_Casey, Ellipsoid to Casey MSL Z_To_GRS80, Z_To_GRS80, Height to the Ellipsoid Z_To_MSL_Casey, Z_To_MSL_Casey, Local MSL orthometric height Vert_Uncer, Vertical_Uncertainty, How good is the Vertical Position Horiz_Unce, Horizontal Uncertainty, How good is the Horizontal Position Uncertaint, Uncertainty Comments, Depth_Comm, Depth_Comments, Vertical uncertainty ranges from 0.05 to 0.64 m and horizontal uncertainty ranges from 0.05 to 1.0 m See the attached document ‘Metadata Record Casey Final.xlsx’ for further details.

This consolidated dataset consisting of Australian Hydrographic Service (AHS) surveys HI468, HI590, HI621 and HI634 converted to International Terrestrial Reference Frame 2000 (ITRF2000) horizontal datum with Z conversion values for multiple height datums. The data was provided to the AAD by Paul Digney of Jacobs consulting in February 2021. Included survey datasets: - HI468_Davis_Z43_Appraised_Part_ITRF2000 - HI468_Davis_Z44_Appraised_ITRF2000 - HI590_Davis_Part_ITRF2000 - HI621B_Davis_Merged_ITRF2000 - HI634_Davis_AreaA_ITRF2000 - HI634_Davis_AreaD_ITRF2000 - HI634_Davis_AreaF_ITRF2000 - HI634_Davis_AreaI_ITRF2000 - HI634_Davis_AreaJ3_ITRF2000 - HI634_Davis_AreaJ4_ITRF2000 - HI634_Davis_Rocks_ITRF2000 All data are in horizontal datum ITRF2000 and have been combined into a single ESRI geodatabase feature class titled AHS_Surveys_Davis_ITRF2000. Attribute data shows quality information, conversion factors (shift in metres) for multiple datums and the MSL orthometric height in the Davis 83 datum: Column Name Alias Meaning Easting, Easting, Easting ITRF2000 Northing, Northing, Northing ITRF2000 CD_To_GRS8, CD_To_GRS80, LAT (Chart Datum) to the Ellipsoid GRS80_To_D, GRS80_To_DAVIS83_MSL, Ellipsoid to DAVIS Height Datum 83 Z_To_GRS80, Z_To_GRS80, Height to the Ellipsoid Z_To_DAVIS, Z_To_DAVIS83_MSL, Local MSL orthometric height (DAVIS Height Datum 83) Vertical_U, Vertical_Uncertainty, How good is the Vertical Position Horizontal, Horizontal Uncertainty, How good is the Horizontal Position Uncertaint, Uncertainty Comments, Depth_Comm, Depth_Comments, Vertical uncertainty is 0.24 to 0.5 m for hydrographic values and 0.25 to 0.5 m for terrestrial values. See the attached document ‘Metadata_Record_Davis_Final (002).xlsx’ for further details.

The RAN Australian Hydrographic Service conducted hydrographic survey HI320 at Commonwealth Bay, December 2000 to January 2001. The survey area was the north and north-west coast of Cape Denison, including Boat Harbour. Some survey lines were also followed further out in Commonwealth Bay, including in the vicinity of Mackellar Islands. The survey dataset, which includes the Report of Survey, was provided to the Australian Antarctic Data Centre by the Australian Hydrographic Office and is available for download from a Related URL in this metadata record. The survey was conducted by LCDR J.Daetz. The data are not suitable for navigation.

The RAN Australian Hydrographic Service conducted hydrographic survey HI242 at Macquarie Island in November and December 1996. The main survey areas were Buckles Bay and Hasselborough Bay. Survey lines were also followed from Elliott Reef down the west coast to Langdon Bay and down the east coast to Buckles Bay. The survey dataset, which includes metadata, was provided to the Australian Antarctic Data Centre by the Australian Hydrographic Office and is available for download from a Related URL in this metadata record. The survey was lead by LT M.A.R.Matthews. The data are not suitable for navigation.

The RAN Australian Hydrographic Service conducted hydrographic survey HI545 at Casey, December 2013 to January 2014. The survey areas were Newcomb Bay and O'Brien Bay. A multibeam sonar system was used. The survey dataset, which includes the Report of Survey, was provided to the Australian Antarctic Data Centre by the Australian Hydrographic Office and is available from the Australian Antarctic Data Centre on request. The survey was lead by LT P.S.Waring. The data are not suitable for navigation.

The RAN Australian Hydrographic Service conducted hydrographic survey HI468 at Davis, January to March 2010. The survey was conducted jointly with Geoscience Australia and the Australian Antarctic Division. The main survey area was near Davis but additional survey lines were followed to Long Fjord to the north and to Crooked Fjord and the Sorsdal Glacier in the south. The survey dataset, which includes the Report of Survey, was provided to the Australian Antarctic Data Centre by the Australian Hydrographic Office and is available from the Australian Antarctic Data Centre by request. The RAN Australian Hydrographic Service team was lead by LCDR R.D.Bowden. The data are not suitable for navigation. Geoscience Australia produced bathymetric and backscatter gridded datasets from the survey data which are available via the metadata record 'Coastal seabed mapping survey, Vestfold Hills, Antarctica, February-March 2010' with Entry ID: Davis_multibeam_grids. The Australian Antarctic Division produced two bathymetric maps from the survey data. See Related URLs in this metadata record.

The RAN Australian Hydrographic Service conducted hydrographic survey HI290 at Heard Island, February to March 1997. The survey dataset, which includes the Report of Survey, was provided to the Australian Antarctic Data Centre by the Australian Hydrographic Office and is available for download from a Related URL in this metadata record. The survey was lead by LT R.D.Bowden. The spatial extent given in this metadata record is that of Heard Island as the spatial extent of the survey is unknown to the Australian Antarctic Data Centre. The data are not suitable for navigation.

The RAN Australian Hydrographic Service conducted hydrographic survey HI176 at Macquarie Island in December 1993. The main survey area was adjacent to the north-east coast between North Head and The Nuggets. Survey lines were also followed part way down the west coast of the island and in the vicinity of Judge and Clerk Islets and Bishop and Clerk Islets. The survey dataset, which includes metadata, was provided to the Australian Antarctic Data Centre by the Australian Hydrographic Office and is available for download from a Related URL in this metadata record. The survey was lead by LT A.J.Withers. The data are not suitable for navigation.

The RAN Australian Hydrographic Service conducted hydrographic survey HI560 at Casey, December 2014 to February 2015. The survey was conducted jointly with Geoscience Australia. The survey area was offshore from Clark Peninsula south to Beall Island, but not including Newcomb Bay and O'Brien Bay which were surveyed in 2013/14 (see the metadata record with ID HI545_hydrographic_survey). A multibeam sonar system was used. The survey dataset, which includes the Report of Survey, was provided to the Australian Antarctic Data Centre by the Australian Hydrographic Office. The RAN Australian Hydrographic Service team was lead by LCDR G.A.Walker. The data are not suitable for navigation.

The RAN Australian Hydrographic Service conducted hydrographic survey HI350 at Mawson, January to March 2002. The survey area was north of the station between Williams Rocks and Parallactic Islands and also at Moller Bank. The survey dataset, which includes metadata, was provided to the Australian Antarctic Data Centre by the Australian Hydrographic Office and is available for download from a Related URL in this metadata record. The survey was lead by LCDR M.Pounder. The data are not suitable for navigation.