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Whole Earth geohydrologic cycle, from the clouds to the core; the distribution of water in the dynamic Earth system

Robert J. Bodnar, Tristan Azbej, Stephen P. Becker, Claudia Cannatelli, Andras Fall and Matthew J. Severs
Whole Earth geohydrologic cycle, from the clouds to the core; the distribution of water in the dynamic Earth system (in The web of geological sciences; advances, impacts, and interactions, Marion E. Bickford (editor))
Special Paper - Geological Society of America (2013) 500: 431-461

Abstract

The whole Earth geohydrologic cycle describes the occurrence and movement of water from the clouds to the core. Reservoirs that comprise the conventional hydrologic cycle define the exosphere, whereas those reservoirs that are part of the solid Earth represent the geosphere. Exosphere reservoirs thus include the atmosphere, the oceans, surface water, glaciers and polar ice, the biosphere, and groundwater. Continental crust, oceanic crust, upper mantle, transition zone, lower mantle and the core make up the geosphere. The exosphere and geosphere are linked through the active plate tectonic processes of subduction and volcanism. While the storage capacities of reservoirs in the geosphere have been reasonably well constrained by experimental and observational studies, much uncertainty exists concerning the actual amount of water held in the geosphere. Assuming that the amount of water in the upper mantle, transition zone, and lower mantle represents only 10%, 10%, and 50% of their storage capacities, respectively, the total amount of water in the Earth's mantle (1.2 X 10 (super 21) kg) is comparable to the amount of water held in the world's oceans (1.37 X 10 (super 21) kg). Fluxes between reservoirs in the geohydrologic cycle vary by approximately 7 orders of magnitude, and range from 4.25 X 10 (super 17) kg/yr between the oceans and atmosphere, to 5 X 10 (super 10) kg/yr between the lower mantle and transition zone. Residence times for water in the various reservoirs of the geohydrologic cycle also show wide variation, and range from 2.6 X 10 (super -2) yr (approximately 10 days) for water in the atmosphere, to 6.6 X 10 (super 9) yr for water in the transition zone.


ISSN: 0072-1077
EISSN: 2331-219X
Coden: GSAPAZ
Serial Title: Special Paper - Geological Society of America
Serial Volume: 500
Title: Whole Earth geohydrologic cycle, from the clouds to the core; the distribution of water in the dynamic Earth system
Title: The web of geological sciences; advances, impacts, and interactions
Affiliation: Virginia Polytechnic Institute and State University, Department of Geosciences, Blacksburg, VA, United States
Affiliation: Syracuse University, Department of Earth Sciences, Syracuse, NY, United States
Pages: 431-461
Published: 2013
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
ISBN: 978-0-8137-2500-0
References: 168
Accession Number: 2013-086850
Categories: Hydrogeology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 2 tables
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 201351
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