Seasonally intermittent water flow through deep fractures in an Alpine Rock Ridge: Gemsstock, Central Swiss Alps
Seasonally intermittent water flow through deep fractures in an Alpine Rock Ridge: Gemsstock, Central Swiss Alps
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季节性间歇性水流穿过高山岩脊的深层裂缝:瑞士中部阿尔卑斯山的 Gemsstock
DOI:
10.1016/j.coldregions.2016.02.010
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发表时间:
2016
影响因子:
4.1
通讯作者:
R. Kenner
中科院分区:
文献类型:
--
作者:
Phillips;Haberkorn;Draebing;Krautblatter;Rhyner;R. Kenner
Geological investigations and seismic refraction tomography reveal a series of 70° steep, parallel and continuous fractures at 2950 m asl within the Gemsstock rock ridge (Central Swiss Alps), at the lower fringe of alpine permafrost. Temperature measurements in a 40 m horizontal borehole through the base of the ridge show that whilst conductive heat transfer dominates within the rock mass, brief negative and positive temperature anomalies are registered in summer. These have very small amplitudes and coincide with summer rainfall events lasting longer than 12 h. In contrast, a complete lack of anomalous thermal signals during spring snowmelt suggests that runoff does not penetrate the open joints, despite high snow water equivalents of around 400 mm. This is attributed to the development of an approximately 20 cm thick, continuous and impermeable basal ice layer which forms at the interface between the snow cover and the cold rock on the shady North facing rock wall during snowmelt. Spring snowmelt water therefore does not affect rock temperatures in the centre of the rock mass, despite the presence of deep open joints. The mechanical impact of snowmelt infiltration on rock wall stability at depth is thus assumed to be negligible at this site.
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影响因子:
3.9
作者:
G. Wieczorek;Stefan Jäger
通讯作者:
Stefan Jäger
DOI:
--
发表时间:
2015
期刊:
影响因子:
--
作者:
A. Haberkorn;M. Phillips;R. Kenner;H. Rhyner;M. Bavay;Stephan Galos;M. Hoelzle
通讯作者:
M. Hoelzle
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
J. Nötzli;S. Gruber;A. Poschinger
通讯作者:
A. Poschinger
DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
F. Magnin;P. Deline;L. Ravanel;J. Noetzli;P. Pogliotti
通讯作者:
P. Pogliotti
影响因子:
5
作者:
A. Hasler;S. Gruber;M. Font;A. Dubois
通讯作者:
A. Hasler;S. Gruber;M. Font;A. Dubois