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It’s hydrogeology but not as we know it: Sub seafloor groundwater flow driven by thermal gradients

Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review

Authors

  • A. Desens
  • V. E.A. Post
  • G. J. Houben
  • T. Kuhn
  • Thomas Graf

Research Organisations

External Research Organisations

  • Federal Institute for Geosciences and Natural Resources (BGR)
  • Helmholtz Zentrum München - German Research Center for Environmental Health
  • Technische Universität Dresden

Details

Original languageEnglish
Title of host publicationProceedings 25th Salt Water Intrusion Meeting, SWIM 2018
Place of PublicationGdansk
Pages66-70
Publication statusPublished - 17 Sept 2018
Event25th Salt Water Intrusion Meeting, SWIM 2018 - Gdansk, Poland
Duration: 17 Jun 2018 → 22 Jun 2018

Publication series

NameE3S Web of Conferences
PublisherEDP Sciences
Volume54
ISSN (electronic)2267-1242

Abstract

Groundwater flow beneath the oceans plays an important role for cooling the earth's crust and geochemical cycles, yet it remains an understudied subject in hydrogeology. This contribution focuses on the circulation of seawater through basalt covered by deep-sea sediments in the equatorial northeast Pacific Ocean. Numerical model simulations are used to infer the factors controlling the flow patterns that develop between basalt outcrops. The energy to drive the flow is derived from the crustal heat flux. It is found that the sediment thickness plays a key role in determining the development of hydrothermal siphons, i.e. the flow between two adjacent seamounts where one acts as a recharge point and the other as a discharge point for seawater. Amongst the various factors tested, the outcrop width was an important factor as well.

ASJC Scopus subject areas

Cite this

It’s hydrogeology but not as we know it: Sub seafloor groundwater flow driven by thermal gradients. / Desens, A.; Post, V. E.A.; Houben, G. J. et al.
Proceedings 25th Salt Water Intrusion Meeting, SWIM 2018. Gdansk, 2018. p. 66-70 (E3S Web of Conferences; Vol. 54).

Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review

Desens, A, Post, VEA, Houben, GJ, Kuhn, T, Walther, M & Graf, T 2018, It’s hydrogeology but not as we know it: Sub seafloor groundwater flow driven by thermal gradients. in Proceedings 25th Salt Water Intrusion Meeting, SWIM 2018. E3S Web of Conferences, vol. 54, Gdansk, pp. 66-70, 25th Salt Water Intrusion Meeting, SWIM 2018, Gdansk, Poland, 17 Jun 2018. https://doi.org/10.1051/e3sconf/20185400008, https://doi.org/10.15488/4269
Desens, A., Post, V. E. A., Houben, G. J., Kuhn, T., Walther, M., & Graf, T. (2018). It’s hydrogeology but not as we know it: Sub seafloor groundwater flow driven by thermal gradients. In Proceedings 25th Salt Water Intrusion Meeting, SWIM 2018 (pp. 66-70). (E3S Web of Conferences; Vol. 54).. https://doi.org/10.1051/e3sconf/20185400008, https://doi.org/10.15488/4269
Desens A, Post VEA, Houben GJ, Kuhn T, Walther M, Graf T. It’s hydrogeology but not as we know it: Sub seafloor groundwater flow driven by thermal gradients. In Proceedings 25th Salt Water Intrusion Meeting, SWIM 2018. Gdansk. 2018. p. 66-70. (E3S Web of Conferences). doi: 10.1051/e3sconf/20185400008, 10.15488/4269
Desens, A. ; Post, V. E.A. ; Houben, G. J. et al. / It’s hydrogeology but not as we know it : Sub seafloor groundwater flow driven by thermal gradients. Proceedings 25th Salt Water Intrusion Meeting, SWIM 2018. Gdansk, 2018. pp. 66-70 (E3S Web of Conferences).
Download
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