1. Australian Antarctic Data Centre
2. Discover and Manage Data
3. Records
4. AHS_Surveys_Mawson_ITRF2000

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.

The dataset was updated in August, 2023 to add a csv version of the data.

Purpose

The AADC (Australian Antarctic Data Centre) is in the process of converting all internally held spatial datasets to the ITRF2000 horizontal datum.

Quality

Vertical uncertainty ranges from 0.05 to 0.64 m and horizontal uncertainty ranges from 0.05 to 1.0 m

Access

These data are publicly available for download from the provided URL.

Temporal Coverages

• Start date: 2003-01-01 - Stop date: 2019-02-28

Spatial Coverages

Science Keywords

• EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > BATHYMETRY

Use Constraints

This data set conforms to the CCBY Attribution License (http://creativecommons.org/licenses/by/4.0/).

Please follow instructions listed in the citation reference provided at http://data.aad.gov.au/aadc/metadata/citation.cfm?entry_id=AHS_Surveys_Mawson_ITRF2000 when using these data.