Consolidated dataset of hydrographic surveys at Macquarie Island, 1999-2019, ITRF2000

The AADC (Australian Antarctic Data Centre) is in the process of converting all internally held spatial datasets to the ITRF2000 horizontal datum. This consolidated dataset consists of surveys HI623_alatB_gg, HI625_alatB_GG, HI632_alat_B_gg, HI632_alat_C_gg, LADSII_MMI20756_HSDB_T0001_SD_100029052_op, LADSII_MMI20756_HSDB_T0001_SD_100029053_op, LADSII_MMI20756_HSDB_T0001_SD_100029054_op converted to 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 March 2021.Included survey datasets:•    HI623_alatB_gg•    HI625_alatB_GG•    HI632_alat_B_gg•    HI632_alat_C_gg•    LADSII_MMI20756_HSDB_T0001_SD_100029052_op•    LADSII_MMI20756_HSDB_T0001_SD_100029053_op•    LADSII_MMI20756_HSDB_T0001_SD_100029054_opAll data are in horizontal datum ITRF2000 and have been combined into a single ESRI geodatabase feature class titled AHS_Surveys_Macca_ITRF2000.Attribute data shows quality information, conversion factors (shift in metres) for multiple datums and the MSL orthometric height:Column Name     Alias    MeaningEasting    Easting    Easting ITRF2000Northing    Northing    Northing ITRF2000LAT_to_GRS    LAT_to_GRS    LAT (Chart Datum) to GSR80LAT_to_Mac    LAT_to_Mac    LAT to Macca MSLZ_To_GRS80    Z_To_GRS80    Height to the EllipsoidZ_To_Macca    Z_To_Macca    Local MSL orthometric heightVertical_U    Vertical_U    How good is the Vertical PositionHorizontal    Horizontal    How good is the Horizontal PositionUncertaint    Uncertaint    Uncertainty CommentsDepth_Comm     Depth_Comments            Vertical uncertainty ranges from 0.5 to 1.2 m and horizontal uncertainty ranges from 2 to 5.5 m. Null values indicate unknown uncertainty.See the attached document ‘Metadata_Record_Macqaurie Island Final.xlsx’ for further details.