Perturbation of the heat flow by water circulation in a mountainous framework: Examples from the Swiss Alps

Details

Serval ID
serval:BIB_94FF2253EE6A
Type
Article: article from journal or magazin.
Collection
Publications
Title
Perturbation of the heat flow by water circulation in a mountainous framework: Examples from the Swiss Alps
Journal
Eclogae Geologicae Helvetiae
Author(s)
Jaboyedoff M., Pastorelli S.
ISSN-L
0012-9402
Publication state
Published
Issued date
2003
Peer-reviewed
Oui
Volume
96
Pages
37-47
Language
english
Abstract
In the Swiss heat flow density (HFD) map (Medici & Rybach 1995), areas
with the lowest heat flow values correspond to the alpine highest
relief and, often. where the highest uplift values are found. 1 D
thermal simulations show that the exhumation of metamorphic rocks,
and consequently the HFD values. should be higher than those observed,
as already proposed by Oxburgh & England (1980). The low HFD values
in the Alpine region might reflect large amounts of cold groundwater
circulating into the massifs that decrease the internal temperatures.
This is confirmed by introducing the effect of water circulation
in the I D thermal model. On the contrary, ascending warm waters
with relatively high flow rates can heat the surrounding rocks and
consequently induce locally positive geothermal anomalies.
Keywords
alpine chain, exhumation, heat flow density, groundwater circulation, geothermal systems
Create date
25/11/2013 19:41
Last modification date
20/08/2019 14:57
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