Measuring and interpreting heat fluxes from shallow volcanic bodies using vertical temperature profiles: a preliminary test |
| |
| Authors: | Michel Lardy Alain Tabbagh |
| |
| Institution: | (1) Orstom, B.P. 76, Port-Vila, Vanuatu, VU;(2) Département de Géophysique appliquée, UMR-7619 Université Pierre et Marie Curie et CNRS, Centre de Recherches Géophysiques, F-58150 Garchy, France, FR |
| |
| Abstract: | To test the potential of heat flux prospecting in active volcanic areas using shallow temperature data taken along vertical
profiles, we carried out two thermal profile surveys, one not far from Yasur cone on Tanna Island, and another inside the
caldera of Ambrym (New Hebrides arc, southwestern Pacific). The basic steady heat flux of internal volcanic origin was determined,
taking into account both conductive and convective heat transfers. At both locations there exists, over small distances, significant
differences in the heat flux. These differences correspond to shallow sources of heat. The use of a network of vertical profiles
allowed: (a) heat flux mapping; (b) location of shallow volcanic heat sources; and (c) observation of the detailed structure
of the heat release at quiescent but active volcanoes.
Received: 18 July 1997 / Accepted: 13 May 1998 |
| |
| Keywords: | Shallow temperature profiles Surface heat flux |
| 本文献已被 SpringerLink 等数据库收录！ |
|
