From 1 - 3 / 3
  • Introduction The purpose of the 97/98 Antarctic survey season was to provide survey control and vertical and oblique aerial photography around Mawson, Davis, Beaver Lake, and the Prince Charles Mountains in support of the ANARE mapping program as well as providing survey support for other ANARE science programs. The following team carried out this survey work: Christopher Watson - Antarctic Division Volunteer Surveyor, John Hyslop - LANDINFO Surveyor. Project Outline The Antarctic Division's Brief to Surveyors which outlines the details of the program is included in Appendix A. The survey program for Antarctica 97/8 was divided into two main areas of interest. Mawson station from Voyage 2 to 4 which included photo control of offshore islands, aerial photography of penguin colonies with the Linhof camera, Mawson tide gauge network and updating the station map. Davis station from Voyage 4 to 5 which included aerial photography of the Rauer Group and Larsemann Hills, aerial photography and tide gauge work at Beaver Lake, and vertical and oblique aerial photography in the Southen Prince Charles Mountains. Also photo control at Scullin and Murray Monoliths and photography at Mount Brown, Mirny offshore island and features between Mirny and Davis. At Davis station surveys included Station detail surveys tide gauge connections and lake water levels in the Vestfold Hills. At Casey station during V2 stop over survey work was requested at the wharf area, levelling and detail survey updates. Recommendations: Aerial photography. The following suggestions are made. 1. The flight program be upgraded to allow a digital map to be shown on the screen. 2. The pilots display did not work in the helicopter and the problem needs to be fixed. I suspect it may have been due to the setting in the flight program. I had difficulty understanding what all the settings meant and perhaps more documentation may help. 3. Because of 2. more reliance was placed on the air crew navigating from the monitor and hence felt the need for more control over the display eg. Zooming in and out and run selection. 4. A video drift sight would be a great advantage. If this were somehow attached directly to the camera there would be more room and less leads involved. 5. Some of the film spools were too tight on the cogged drive shaft. At Beaver Lake when loading film in a black camera bag in the helicopter I had to wind the new film onto another spool that would fit. The spools need to be checked. Logistics. The need to return the helicopter to Davis each day seems to me to be an extremely expensive requirement. To get to the Southern Prince Charles Mountains is an eight hour return trip. 11 hour flying is about all the pilots can do in a day which does not leave much time for productive work. We did have an opportunity to do aerial photography on the way but on the two days we went to the PCMs we decided to make the first priority the main destination and hope for time on the return trip, but each occasion we were too late and returned by the most direct route. I could not help thinking how much more work we could have done if the helicopters had been based at Beaver Lake for a few days. There were also days when the weather was fine and suitable for flying in the PCMs but we could not leave Davis through bad weather on the way. This method of operation also understandably placed pressures on using the helicopters to the fullest. The last days flying in the PCMs was done with 4 people in the back of the S76. We then were asked if we could take 300kg of equipment back from a Mawson Escarpment camp. That made photographic operation a bit cramped but by then the weather was against further photography. I felt that through Joe Johnson, station leader and Jim Wilson, chief pilot we got excellent support for the photographic program but with the S76 deployed in the area of operation we could have achieved a lot more.

  • Taken from sections of the report: This report has been prepared as a supplement to the 1997/98 Survey Report by John Hyslop and contains solely comments and recommendations as seen from the perspective of the volunteer survey student. It is hoped this report may be of some use in the future planning and operation of Surveying and Mapping expeditions to Antarctica. The report has been divided according to each area visited and discusses the work achieved and highlights any possible improvements either in the actual surveys undertaken or the execution of the program as a whole. Typical issues include helicopter operations, aerial photography, the oblique mount, collaboration with other field parties, transportation and so on. VOYAGE SOUTH The voyage south provided the ideal opportunity to begin the detailed planning of the work to come. Flight planning for the photography was started and locations for photo control throughout the offshore islands at Mawson were determined. It was important to prioritize which work was to be undertaken first throughout the offshore islands at Mawson. This was to ensure the most important work was completed before the sea ice deteriorated and prevented travel on quads. The voyage to Mawson went via Casey where the surveyors were required to undertake a small amount of work during the stop over. Ice conditions prevented the Aurora reaching Casey. John and I were unable to make it to Casey due to the long fly off and limited time. Ian Sutherland (Station Leader at Casey) informed us that snow conditions over the station would have prevented most survey work anyway. This was the perfect example that survey work in Antarctica is totally dependent on current weather conditions in addition to the 'A' factor. This highlighted the fact that all plans for work in the Antarctic are required to be 'dynamic' and hence the various priorities listed in the brief were appreciated. It was quite frustrating spending close to 4 weeks on the Aurora before arriving on the continent and beginning the work proper. The frustration culminated in the problem with the Aurora's rudder and expeditioners being told we may be returning to Australia even though we were within fly-off distance to Mawson.

  • Taken from sections of the report: Introduction This report describes aspects of the fieldwork completed for the Australian Antarctic Division (AAD) mapping program during the Austral summer 2003-04. The mapping program was undertaken in harmony and collaboration with the Geoscience Australia geodesy program in Antarctica, between 16th November 2003 and 2nd February 2004. Surveyors from both organisations, including Henk Brolsma (Mapping Officer, AAD) and A. Corvino (author), teamed up to successfully complete a wide range of goals. The principal objective of the Geoscience Australia geodesy program was to install three remotely located continuous GPS stations in the southern Prince Charles Mountains (PCM) and Grove Mountains (Corvino, 2004). That project is not discussed further in this report. The main objectives of the AAD mapping program were to survey ground control points (GCPs) for geo-referencing new satellite imagery and to complete terrestrial survey work in the vicinity of Davis station. The following tasks were completed: - Downloading of the tide gauges at the Larsemann Hills and Davis station; - Transfer of local sea level at the Davis tide gauge to an absolute height datum using GPS; - Establishing a new survey mark at Beaver Lake and connecting it to the existing survey marks; - Conducting GPS surveys of selected ground features for geo-referencing satellite imagery at Beaver Lake, Marine Plain, the Grove Mountains and Wilson Bluff; - Establishing new survey marks at Marine Plain in the Vestfold Hills; - Computing the alignment of the UWOSCR instrument in the Space and Atmospheric Sciences (SAS) building at Davis station; - Surveying lake levels in the Vestfold Hills; and - Various local surveying tasks at Davis station. A few aspects of the fieldwork that were completed exclusively by surveyor Brolsma are not included in this report. In particular the report is concerned with the tasks that were undertaken using GPS survey methods, which includes the tide gauge surveys, image control surveys and the fieldwork at Beaver Lake and Marine Plain. Photographs that document the fieldwork and support the text are included throughout. GPS processing reports and photographs showing the locations of the GCPs are provided as Appendices.