Australian Hydrographic Service Surveys at Mawson Station - ITRF2000

This consolidated dataset consists of Australian Hydrographic Service (AHS) surveys HI621C, 5135 (Terrestrial), HI364, HI514, and HI607 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:
• HI621C_MAWSON_merged.shp
• HI621C_MAWSON_merged.shp
• Terrestrial_Data_5135
• HI364_HSDB_T0001_SD_100035029_op_soundings
• QC_HI 514 HDCS_FDD_appraised (Mawson Approches)
• HI607.Shp

All data are in horizontal datum ITRF2000 and have been combined into a single ESRI geodatabase feature class titled AHS_Surveys_Mawson_ITRF2000.

Attribute data shows quality information, conversion factors (shift in metres) for multiple datums and the MSL orthometric height:

Column Name, Alias, Meaning
Easting, Easting, Easting ITRF2000
Northing, Northing, Northing ITRF2000
CD_To_GRS8, CD_To_GRS80, LAT (Chart Datum) to the Ellipsoid
LAT_to_GRS80, LAT_to_GRS80, LAT (Chart Datum) to GSR80
LAT_to_MSL_Mawson, LAT_to_MSL_Mawson, LAT to Mawson MSL
Z_To_GRS80, Z_To_GRS80, Height to the Ellipsoid
Z_To_MSL_Mawson, Z_To_MSL_Mawson, Local MSL orthometric height
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 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_Mawson Final REV2.xlsx’ for further details.