676f38ea-5f63-41e0-918d-5bc259a96b51 eng Ev-K2-CNR +39 035 3230511 +39 035 3230551 Via San Bernardino 145 Bergamo BG 24126 Italy metadata@evk2cnr.org http://www.evk2cnr.org/ 2019-12-04T19:15:34 ISO 19115:2003/19139 1.0 Ice ablation and meteorological conditions on the debris-covered area of Baltoro glacier, Karakoram, Pakistan 2006-01-09T00:00:00 Annals of Glaciology 43 Annals of Glaciology Volume 43, Number 1 292-300 Annals of Glaciology, Volume 43, Number 1, September 2006 , pp. 292-300(9) During the recent Italian expedition ‘K2 2004 – 50 years later’ (June–July 2004) on Baltoro glacier, Karakoram, Pakistan, glaciological field experiments were carried out on the debris-covered area of this high-elevation glacier. The aim was to investigate the ice ablation and its relations with debris thermal properties and meteorological conditions. Ablation measurements along the glacier up to about 5000m and within a dedicated test field were combined with meteorological data from two automatic weather stations located at Urdukas (4022ma.s.l.) and at K2 Base Camp (5033ma.s.l.). In addition, temperature measurements of the debris cover at different depth levels along the glacier allowed the calculation of debris surface temperature and of the debris thermal resistance (R). Using the air temperature, the local mean lapse rate (0.00758 K/m) and the measured ablation, the degree-day factors (K) at different locations on the glacier were calculated. The ice ablation rates were related to debris thickness and elevation. They are typically on the order of 4cm/ day during the observation period. However, it was found that the surface topography (slope, aspect) has an influence on the total ablation similar to that of the debris thickness. Thermal resistance of the debris cover and its distribution over the glacier were estimated. Finally, a best-guess estimate of the total meltwater production was calculated from available climate data. Claudia Mihalcea University of Milan Via Mangiagalli, 34 Milano MI 20133 Italy claudia.mihalcea@unimi.it www.unimi.it Christoph Mayer Commission for Glaciology, Bavarian Academy of Sciences A. Goppel, 11 Munich 80539 Germany Christoph.Mayer@lrz.badw-muenchen.de Christoph.Mayer@kfg.badw.de http://www.badw.de/ Guglielmina Diolaiuti University of Milan +39 0250315510 +39 0250315494 Via Mangiagalli, 34 Milano MI 20133 Italy guglielmina.diolaiuti@unimi.it www.unimi.it International Glaciological Society +44 (0)1223355974 +44 (0)1223354 931 Lensfield Road Cambridge United Kingdom www.igsoc.org http://www.igsoc.org/ https://geoportal.mountaingenius.org/geonetwork/srv/eng/resources.get?uuid=676f38ea-5f63-41e0-918d-5bc259a96b51&fname=mountain_witness__s.png thumbnail png Baltoro glacier Karakoram Pakistan debris covered glacier buried ice ablation SHARE SEED eng elevation 60.8663 77.8239 23.688 37.0608 http://www.ingentaconnect.com/content/igsoc/agl/2006/00000043/00000001/art00044 WWW:LINK-1.0-http--link Abstract:"Ice ablation and meteorological conditions on the debris-covered area of Baltoro glacier, Karakoram, Pakistan” https://geoportal.mountaingenius.org/geonetwork/srv/en/resources.get?uuid=676f38ea-5f63-41e0-918d-5bc259a96b51&fname=Baltoro_Annals46a093.pdf&access=private WWW:DOWNLOAD-1.0-http--download Baltoro_Annals46a093.pdf Full Text(pdf):"Ice ablation and meteorological conditions on the debris-covered area of Baltoro glacier, Karakoram, Pakistan” “Ice ablation and meteorological conditions on the debris-covered area of Baltoro glacier, Karakoram, Pakistan” Authors: Mihalcea, Claudia; Mayer, Christoph; Diolaiuti, Guglielmina; Lambrecht, Astrid; Smiraglia, Claudio; Tartari, Gianni Source: Annals of Glaciology, Volume 43, Number 1, September 2006 , pp. 292-300(9) Publisher: International Glaciological Society