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  Mapping permeability over the surface of the Earth

Gleeson, T., Smith, L., Moosdorf, N., Hartmann, J., Durr, H. H., Manning, A. H., et al. (2011). Mapping permeability over the surface of the Earth. GEOPHYSICAL RESEARCH LETTERS, 38: L02401. doi:10.1029/2010GL045565.

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 Creators:
Gleeson, Tom1, Author
Smith, Leslie1, Author
Moosdorf, Nils2, Author           
Hartmann, Jens3, Author           
Durr, Hans H.1, Author
Manning, Andrew H.1, Author
van Beek, Ludovicus P. H.1, Author
Jellinek, A. M.1, Author
Affiliations:
1external, ou_persistent22              
2The CliSAP Cluster of Excellence, External Organizations, ou_1832285              
3CRG Chemistry of Natural Aqueous Solutions, Research Area B: Climate Manifestations and Impacts, The CliSAP Cluster of Excellence, External Organizations, Bundesstraße 53, 20146 Hamburg, DE, ou_2025293              

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Free keywords: HYDRAULIC CONDUCTIVITY; CONTINENTAL-CRUST; GROUNDWATER; FLOW; DYNAMICS; MODELS
 Abstract: Permeability, the ease of fluid flow through porous rocks and soils, is a fundamental but often poorly quantified component in the analysis of regional-scale water fluxes. Permeability is difficult to quantify because it varies over more than 13 orders of magnitude and is heterogeneous and dependent on flow direction. Indeed, at the regional scale, maps of permeability only exist for soil to depths of 1-2 m. Here we use an extensive compilation of results from hydrogeologic models to show that regional-scale (>5 km) permeability of consolidated and unconsolidated geologic units below soil horizons (hydrolithologies) can be characterized in a statistically meaningful way. The representative permeabilities of these hydrolithologies are used to map the distribution of near-surface (on the order of 100 m depth) permeability globally and over North America. The distribution of each hydrolithology is generally scale independent. The near-surface mean permeability is of the order of similar to 5 x 10(-14) m(2). The results provide the first global picture of near-surface permeability and will be of particular value for evaluating global water resources and modeling the influence of climate-surface-subsurface interactions on global climate change. Citation: Gleeson, T., L. Smith, N. Moosdorf, J. Hartmann, H. H. Durr, A. H. Manning, L. P. H. van Beek, and A. M. Jellinek (2011), Mapping permeability over the surface of the Earth, Geophys. Res. Lett., 38, L02401, doi: 10.1029/2010GL045565.

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Language(s): eng - English
 Dates: 2011
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Identifiers: ISI: 000286517100003
DOI: 10.1029/2010GL045565
 Degree: -

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Title: GEOPHYSICAL RESEARCH LETTERS
Source Genre: Journal
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Pages: - Volume / Issue: 38 Sequence Number: L02401 Start / End Page: - Identifier: ISSN: 0094-8276