Jordan, E.; Ungerechts, L.; Cáceres, B. & Penafiel, A. (2005): <b>Estimation by photogrammetry of the glacier recession on the Cotopaxi Volcano (Ecuador) between 1956 and 1997</b>. <i>Hydrological Sciences</i> <b>50</b>, 949-961.
Resource Description
Title:
Estimation by photogrammetry of the glacier recession on the Cotopaxi Volcano (Ecuador) between 1956 and 1997
Short Name:
DEM Cotopaxi
FOR816dw ID:
985
Publication Date:
2005-12-13
License and Usage Rights:
This copy of the article was taken from <br/>
http://www.apmpk.com/Cuurent_Projects/Research_material/Glacier%20Receding.pdf<br/>
on 23.05.2011
Resource Owner(s):
Individual:
E. Jordan
Contact:
email:
webmaster <at> tropicalmountainforest.com
Individual:
Lars Ungerechts
Contact:
email:
webmaster <at> tropicalmountainforest.org
Düsseldorf
Individual:
B. Cáceres
Contact:
email:
webmaster <at> tropicalmountainforest.org
Individual:
A. Penafiel
Contact:
email:
webmaster <at> tropicalmountainforest.com
Abstract:
Aerial photographs of the Cotopaxi Volcano ice cap dating from 1956 to 1997 were used to quantify the evolution of the surface area. Results were obtained using precise stereoscopic methods that give the most accurate information. In addition four specific glacier tongues were investigated in detail to measure the ice mass lost between 1976 and 1997. Surprisingly, the bedrock morphology is shown to be very irregular and this explains a large extent of the variability found in the ice losses. The results show that glaciers stagnated from 1956 to 1976 and lost about 30% of their surface area between 1976 and 1997. Slope exposure did not seem to have any significant effect since all the glaciers of the volcano retreated in the same proportion. In accordance with specific measurements performed on the nearby Antizana 15 Glaciers, it is suggested that the strong recession observed after 1976 was associated with increasing melting conditions which have occurred repeatedly during the intense/long-duration warm ENSO phases.<br/>
Key words: climatic change; Cotopaxi Volcano; Ecuador; glacier retreat; photogrammetry; South America
Additional Infos:
This article describes the method how the DEM 10m (Ungerechts L. (2010): DEM 10m (triangulated from aerial photo - b/w). Available online (http://www.tropicalmountainforest.org/data_pre.do?citid=901) from DFG-FOR816dw.) was derived from aerial photographs. The data for the available DEM were captured in the same campaign in 1997 as it is described in the articel in chapter: Data setting and methods to estimate glacierized areas.
