Title Experimental application of GPS and laser-GPS to Recent glacier mass balance in Calderone Glacier; results and outlook [Applicazioni sperimentali GPS e laser-GPS ai recenti bilanci di massa glaciali del ghiacciaio del Calderone; risultati e prospettive]
Author D'Aquila, P.; Pecci, M.; Pignotti, S.
Author Affil D'Aquila, P., Ente Italiano della Montagna, Rome, Italy
Source Memorie della Societa Geografica Italiana, 87(2), p.557-568, ; II convegno nazionale A. I. Geo, Turin, Italy, March 28- 30, 2007, V. Agnesi. Publisher: Societa Geografica Italiana, Rome, Italy. ISSN: 0391- 5190
Publication Date 2009
Notes In Italian with English summary. 16 refs. GeoRef Acc. No: 308653
Index Terms ablation; cirques; experimentation; geomorphology; geophysical surveys; glaciers; glacier ablation; lasers; mass balance; surveys; Italy--Abruzzi; Apennines--Central Apennines; Abruzzi Italy; Apennines; Calderone Glacier; Cenozoic; Central Apennines; Europe; experimental studies; geophysical methods; glacial features; Global Positioning System; Holocene; Italy; laser methods; Quaternary; Southern Europe
Abstract The recent geomorphologic, GPS and Laser-GPS surveys indicate a "differential" thickness variation between the upward sector of the Ghiacciaio del Calderone (increasing as far as the year 2006) and the bottom and lower sector (in strong shrinkage, namely in 2007). Starting from the simple multitemporal photographic comparison, it is clearly evident the progressive depression of the lower sector of the glacier due to a negative mass balance; while the traditional methodology highlights a substantially stationary mass balance since the year 2006. The principal instrumental limit of the traditional methods consists in the limited depth of driving of the ablation stakes, due to the presence of blocks and glacial debris "floating" into the superficial ice mass, and the related predisposition in falling down and loosing data. The GPS and Laser-GPS surveys can represent, therefore, an useful and cheap integration of the mass balance realized with traditional methods, for such a type of apparatus. In the case of a cirque glacier with limited dimension, like the Ghiacciaio del Calderone of the Gran Sasso d'Italia, the authors suggest that such a methodology can be proposed as integrative to the traditional one, especially when complex ablation processes and a sub-glacial stream erosion ice collapse-inducing are hypothesised.
Publication Type conference paper or compendium article
Record ID 65005532