Australian Hydrographic Service Surveys at Mawson Station - ITRF2000

Brief description

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.