DOI: 10.1002/2014GL059856
论文题名: A glimpse beneath earth's surface: GLobal HYdrogeology MaPS (GLHYMPS) of permeability and porosity
作者: Gleeson T. ; Moosdorf N. ; Hartmann J. ; Van Beek L.P.H.
刊名: Geophysical Research Letters
ISSN: 0094-10563
EISSN: 1944-10294
出版年: 2014
卷: 41, 期: 11 起始页码: 3891
结束页码: 3898
语种: 英语
英文关键词: groundwater
; hydrology models
; land surface models
; permeability
Scopus关键词: Climate models
; Groundwater
; Hydrogeology
; Lithology
; Mechanical permeability
; Porosity
; Spatial distribution
; Surface measurement
; Coarse-grained sediments
; Earth's surface
; Global land surface
; Groundwater dynamics
; Hydrology models
; Land surface models
; Permeability and porosities
; Subsurface data
; Permafrost
; global perspective
; lithology
; mapping
; permeability
; polygon
; porosity
英文摘要: The lack of robust, spatially distributed subsurface data is the key obstacle limiting the implementation of complex and realistic groundwater dynamics into global land surface, hydrologic, and climate models. We map and analyze permeability and porosity globally and at high resolution for the first time. The new permeability and porosity maps are based on a recently completed high-resolution global lithology map that differentiates fine and coarse-grained sediments and sedimentary rocks, which is important since these have different permeabilities. The average polygon size in the new map is ~100 km2, which is a more than hundredfold increase in resolution compared to the previous map which has an average polygon size of ~14,000 km2. We also significantly improve the representation in regions of weathered tropical soils and permafrost. The spatially distributed mean global permeability ~10 -15 m2 with permafrost or ~10-14 m2 without permafrost. The spatially distributed mean porosity of the globe is 14%. The maps will enable further integration of groundwater dynamics into land surface, hydrologic, and climate models. © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84901877067&doi=10.1002%2f2014GL059856&partnerID=40&md5=60ef6fb1349dd6cce3cfeca60b9e2e90
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7827
Appears in Collections: 气候减缓与适应
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作者单位: Department of Civil Engineering, McGill University, Montreal, QC, Canada
Recommended Citation:
Gleeson T.,Moosdorf N.,Hartmann J.,et al. A glimpse beneath earth's surface: GLobal HYdrogeology MaPS (GLHYMPS) of permeability and porosity[J]. Geophysical Research Letters,2014-01-01,41(11).