FN Archimer Export Format PT J TI Hydrothermal fluid flow triggered by an earthquake in Iceland BT AF Geoffroy, Laurent Dorbath, Catherine Ágústsson, Kristján Kristjánsdóttir, Sigríður Flóvenz, Ólafur G. Doubre, Cécile Gudmundsson, Ólafur Barreyre, Thibaut Bazin, Sara Franco, Aurore AS 1:1;2:2;3:3;4:3;5:3;6:2;7:4;8:5;9:1;10:1; FF 1:;2:;3:;4:;5:;6:;7:;8:;9:;10:; C1 IUEM, CNRS, University of Western Britany, Brest, France EOST, CNRS, Université de Strasbourg, Strasbourg, France Iceland GeoSurvey, Reykjavik, Iceland Uppsala University, Uppsala, Sweden Centre of Deep-Sea Research, University of Bergen, Bergen, Norway C2 UBO, FRANCE CNRS, FRANCE ICELAND GEOSURVEY, ICELAND UNIV UPPSALA, SWEDEN UNIV BERGEN, NORWAY UM GEO-OCEAN IN WOS Cotutelle UMR DOAJ copubli-france copubli-europe IF 7.9 TC 1 UR https://archimer.ifremer.fr/doc/00755/86691/92136.pdf https://archimer.ifremer.fr/doc/00755/86691/92137.pdf LA English DT Article AB Microearthquake hypocenters were analyzed in the Krýsuvík geothermal area in SW-Iceland with data taken from two consecutive passive seismic surveys, 2005 and 2009. Five years prior to the 2005 survey, this area was struck by an earthquake initiating a major top-to-bottom fluid migration in the upper crust. We observe from our surveys a complex bottom-to-top migration of seismicity with time following this fluid penetration, suggesting the migration of a pore pressure front controlled by the upper-crust fracture system. We interpret these data as the time and space development of high-temperature hydrothermal cells from a deep upper crustal fluid reservoir in the supercritical field. These results provide an insight into the coupling mechanisms between active tectonics and fluid flow in upper-crustal extensional systems with high thermal flux. PY 2022 PD MAR SO Communications Earth & Environment SN 2662-4435 PU Springer Science and Business Media LLC VL 3 IS 1 UT 000767365500003 DI 10.1038/s43247-022-00382-0 ID 86691 ER EF