Shallow geothermal energy system in fractured basalt: A case study from Kollafjørður, Faroe Islands, NE-Atlantic Ocean

TY - JOUR

T1 - Shallow geothermal energy system in fractured basalt

T2 - A case study from Kollafjørður, Faroe Islands, NE-Atlantic Ocean

AU - Eidesgaard, O. R.

AU - Schovsbo, N. H.

AU - Boldreel, L. O.

AU - Ólavsdóttir, J.

PY - 2019

Y1 - 2019

N2 - A shallow (≈200 m) geothermal energy system is examined in the Faroe Islands, a 60-million-year-old volcanic archipelago in the Northeast Atlantic. The geothermal water has a heating capacity of approximately 150 individual households and consists of meteoric water approximately 3 years old. Water temperatures as high as 27 °C in artesian wells are explained by a topography-driven vertical convection. The water flows into the boreholes from the north-northwest through fractures and flow tops and bases in the basalt exposed in surrounding high terrains. Of six influx zones, three are water carrying fractures that strike N–S and dip E.

AB - A shallow (≈200 m) geothermal energy system is examined in the Faroe Islands, a 60-million-year-old volcanic archipelago in the Northeast Atlantic. The geothermal water has a heating capacity of approximately 150 individual households and consists of meteoric water approximately 3 years old. Water temperatures as high as 27 °C in artesian wells are explained by a topography-driven vertical convection. The water flows into the boreholes from the north-northwest through fractures and flow tops and bases in the basalt exposed in surrounding high terrains. Of six influx zones, three are water carrying fractures that strike N–S and dip E.

KW - Faroe Islands

KW - Fractured basalt

KW - Optical televiewer

KW - Plateau basalt

KW - Shallow-geothermal energy

KW - Wireline logs

U2 - 10.1016/j.geothermics.2019.07.005

DO - 10.1016/j.geothermics.2019.07.005

M3 - Journal article

AN - SCOPUS:85070655963

SN - 0375-6505

VL - 82

SP - 296

EP - 314

JO - Geothermics

JF - Geothermics

ER -