Larsemann Hills - Mapping from aerial photography captured February 1998

Full description

This mapping completed the Larsemann Hills photogrammetric mapping project.
The project was commenced on 14 December 2001 and completed in April 2003.
It includes the integration of newly mapped data with dataset gis136. (Larsemann Hills - Mapping from Landsat 7 imagery captured January 2000)

A report on the project is available at the url given below.

Lineage

Progress Code: completed

Statement: This mapping project was completed using photography flown by the AAD on 1998-02-01 and Ground Control Points surveyed in the summer of 2000/2001. The aerial photography used was: Film - ANTC 1063 Run 3 Frames 82 to 102 (Q info 487) Film - ANTC 1063 Run 4 Frames 59 to 80 (Q info 487) Film - ANTC 1063 Run 5 Frames 5 to 19 (Q info 488) Film - ANTC 1067 Run 1 Frames 44 to 57 (Q info 487) Film - ANTC 1067 Run 2 Frames 20 to 38 (Q info 487) Film - ANTC 1067 Run 5A Frames 93 to 97 (Q info 488) Ground control points used, were derived from the survey report prepared by Hydro Tasmania for the 2000/2001 summer lodged with the Mapping Officer, Australian Antarctic Division. All the stereo models were setup in a Zeiss P3 analytical stereo plotter and plotted using Microstation interfaced with Cadmap for feature coding. Plotting work was completed with a planimetric accuracy of +/- 5m and a vertical accuracy of +/- 5m for Film ANTC 1063 Runs 3 and 4 and ANTC 1067 Runs 1 and 2. Plotting work was completed with a planimetric accuracy of +/- 15m and a vertical accuracy of +/- 15m for Film ANTC 1063 Run 5 and ANTC 1067 Run 5a. The Microstation files were converted to Arc/Info coverages ensuring that all attributes (level, colour, line weights, and line styles) were imported. The CAD attributes were used to assign feature attributes to the mapped arcs and points. Three datasets were used in the Larsemann Hills mapping project: 1. Lars25k - 1:25,000 Larsemann Hills, compiled in 1989 from aerial photography flown in November 1960 and contours on ice from Russian maps. 2. gis135 - Larsemann Hills mapping from aerial photography flown on 1998-02-01. 3. gis136 - Larsemann Hills Landsat 7 captured January 2000 Topographic information digitised by Geoscience Australia from Landsat 7 satellite imagery captured on 2000-01-30 Path 126 Row 109. Dataset gis135 was integrated with gis136. To integrate the data the extent of the new mapping was inserted into gis136. All data within this extent was deleted and the remainder integrated with the newly mapped data. Nodes in the Coastline, Continent and Ice layers were moved to ensure correct snapping with the newly mapped data. Only the rock layers from gis 136 were integrated. There was no contour data in gis136 to integrate with gis135. Project specifications required that Lars25k topographic data be integrated with gis135 topographic data. The planimetric information of Lars25k agreed very closely with that of gis135. The planimetric topographic information of Lars25k therefore, was not transformed. The contours for Lars25k did not correlate at all with those of gis135 and no attempt was made to integrate them. The origin of the contours on the ice in Lars25k is from the digitising of Russian maps for which we have no metadata information so it is not surprising there is no correlation. The Data are on the GRS80 ellipsoid and all GIS data processing was computed on UTM zone 43. The final data were un-projected and delivered in geographical coordinates. A copy of the report as pdf is available for download at the url given below. Usually mapped to a Universal Transverse Mercator projection, Zone 43.