Analysis of short-terms height changes of the Hans Glacier using quasi-continuous GPS observations

• Autorzy: Walo J. , Adamek A. , Puczko D.
• Konferencja: Current problems of engineering surveying / Proceedings of the 8th Scientific Technical Conference (VIII ; 30-31.03. 2007 ; Warsaw-Białobrzegi, Poland)
• Języki publikacji: EN

Abstrakty

EN

The analysis of the measurement results exemplifies very valuable information about the glacier behavior which glaciologists need to understand phenomena occurring on the glacier in different seasons. Beside the experiences collected during this experiment it will be the background to design similar investigations from survey technology and methodology point of view. Basing on these results and experiment analysis we can draw some conclusions: - In the period of the experiment the glacier surface felt down as much as 2 meters. This is the natural tendency and consequences of flowing down the glacier to the fiord and his ablation. - In the figures we could notice wavy nature of the phenomenon of the glacier surface which probably is connected with topography of the fiord bottom, ocean tides affected on the glacier front and some processes connected with the ablation water delivery to the glacier bed. This problem requires a detailed study based on environmental data. - The results of determined heights were periodically disrupted by atmospheric conditions (snowing, wind). - The GPS data used to follow the vertical velocity of the glacier surface let us to monitor the glacier with height accuracy. Also the automation of the survey and post-processing is possible. - There are some disadvantages of using this monitoring technology in surveys: one point of observations, influence of atmospheric conditions on the results of surveys, periodically hard access to equipment and not good enough way of installation of the satellite antenna on the glacier (ablation pole).

Słowa kluczowe

EN

GPS satellite; Global Positioning System; Hans Glacier; glacier height; engineering surveying

PL

GPS; satelita GPS; system pozycjonowania obiektów; lodowiec Hans; wysokośc lodowca; pomiary geodezyjne

• Wydawca: Wydział Geodezji i Kartografii Politechniki Warszawskiej
• Czasopismo: Reports on Geodesy
• Rocznik: 2007
• Tom: z. 1/82
• Strony: 367--373
• Opis fizyczny: Bibliogr. 5 poz., rys., wykr.

Twórcy

autor

Walo J.

autor

Adamek A.

autor

Puczko D.

• Warsaw University of Technology

Bibliografia

• JANIA, J.: Glaciology, PWN 1997 Warsaw, (In Polish).
• PACHUTA, A., ADAMEK, A., WOŹNIAK, M.: Investigation of movement of the Hans glacier by GPS methods in the Hornsund fjord on Spitsbergen, Reports on Geodesy, No. 2 (73), pp. 285-290, 2005.
• SZPUNAR, R.: Satellite movement monitoring in quasi-real time. Doctor Thesis, Warsaw, 2006, (In Polish).
• VIELI, A., JANIA, J., BLATTER, H., FUNK, M.: Short-term velocity variations on Hansbreen, a tidewater glacier in Spitsbergen. J. Glaciol., Vol. 50, No. 170, pp. 389-398, 2004.
• WALO, J., PUCZKO, D., ADAMEK, A., WĘZKA, K., MALINOWSKI, Z., RAJNER M.: Monitoring of Hans Glacier movement dynamics (Horsund Sw Spitsbergen, Svalbard), Reports on Geodesy, No. 1 (76), pp. 173-180, Warsaw 2006.