2D structural and thermal models in southeastern Norway based on the recently drilled Årvollskogen borehole and 2D density, magnetic and thermal modellingReportar como inadecuado




2D structural and thermal models in southeastern Norway based on the recently drilled Årvollskogen borehole and 2D density, magnetic and thermal modelling - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

Geothermal Energy

, 2:15

First Online: 23 December 2014Received: 02 August 2014Accepted: 12 November 2014

Abstract

BackgroundWe have made an attempt to understand the main mechanism which controls the conductive heat transfer in the Årvollskogen borehole. This has been done in order to determine the 2D subsurface temperature distribution within the deep-seated crystalline rocks and, therefore, to estimate the geothermal potential in the Moss area near Oslo.

MethodsAn integrated 2D density, magnetic and conductive thermal analysis has been performed in order to recognise the major structural features and thermal pattern of the crystalline crust.

ResultsBased on 2D density and magnetic modelling, a 2D structural model has been constructed for the Moss area. This 2D model has been used during the 2D thermal modelling. The results of the 2D thermal modelling demonstrate that a significant decrease of the Earth’s surface temperatures during the last glaciations still affects the subsurface thermal field of the study area in terms of reduced temperatures within the uppermost crystalline crust. The modelled temperatures are characterised by almost horizontal isotherms without considerable vertical disturbances, reflecting the predominance of subhorizontal layering within the crystalline crust of the Moss area.

ConclusionThe 2D density and magnetic modelling, with consideration of all available geological and structural data, allows us to reveal the deep structure of the crystalline crust within the Moss area. According to the results of the 2D thermal modelling, the predicted temperatures within the upper crystalline crust are in the range of expected values for this part of Fennoscandia.

KeywordsDensity Magnetic and thermal modelling Deep structure Subsurface temperature Conductive heat transfer Geothermal potential Norway Electronic supplementary materialThe online version of this article doi:10.1186-s40517-014-0015-z contains supplementary material, which is available to authorized users.

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Autor: Yuriy Petrovich Maystrenko - Harald Kristian Elvebakk - Guri Venvik Ganerød - Ole Lutro - Odleiv Olesen - Jan Steinar R

Fuente: https://link.springer.com/







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