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

Détails

ID Serval
serval:BIB_94FF2253EE6A
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Titre
Perturbation of the heat flow by water circulation in a mountainous framework: Examples from the Swiss Alps
Périodique
Eclogae Geologicae Helvetiae
Auteur⸱e⸱s
Jaboyedoff M., Pastorelli S.
ISSN-L
0012-9402
Statut éditorial
Publié
Date de publication
2003
Peer-reviewed
Oui
Volume
96
Pages
37-47
Langue
anglais
Résumé
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.
Mots-clé
alpine chain, exhumation, heat flow density, groundwater circulation, geothermal systems
Création de la notice
25/11/2013 19:41
Dernière modification de la notice
20/08/2019 14:57
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