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

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Desens, A.; Post, V.E.A.; Houben, G.J.; Kuhn, T.; Walther, M.; Graf, T.: It's hydrogeology but not as we know it: Sub-seafloor groundwater flow driven by thermal gradients. In: E3S Web of Conferences 54 (2018), 8. DOI:

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Sum total of downloads: 81

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.
License of this version: CC BY 4.0 Unported
Document Type: Article
Publishing status: publishedVersion
Issue Date: 2018
Appears in Collections:Naturwissenschaftliche Fakultät

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pos. country downloads
total perc.
1 image of flag of Germany Germany 54 66.67%
2 image of flag of United States United States 13 16.05%
3 image of flag of China China 4 4.94%
4 image of flag of No geo information available No geo information available 2 2.47%
5 image of flag of Vietnam Vietnam 1 1.23%
6 image of flag of Taiwan Taiwan 1 1.23%
7 image of flag of Sweden Sweden 1 1.23%
8 image of flag of Netherlands Netherlands 1 1.23%
9 image of flag of Iran, Islamic Republic of Iran, Islamic Republic of 1 1.23%
10 image of flag of Czech Republic Czech Republic 1 1.23%
    other countries 2 2.47%

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