An Interpretation of the 1997 Airborne Electromagnetic (AEM( Survey, Fort Huachuca Vicinity, Cochine County, Arizona, with Digital Data

Edité par U. S. Geological Survey, Washington 25 D. C., 1999

Vendeur : Crossroads Books, Reno, NV, Etats-UnisCrossroads Books

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Thin hard case with no covers. Modern time-domain electromagnetic systems now record the induced signal as a vector and in enough time channels so that the resulting data can be used to investigate flat lying conductors as well as steeply dipping ones. Such systems can therefore be used to provide insight into such questions as the distribution of silt and clay (generally conductive) relative to sand and gravel (generally less conductive) in basin fill sediments and the conductivity of the ground water due to impurities (e. G. , calcium from limestone or metallic sulphides). These results have important applications in hydrologic studies of ground water quality and quantity, and in geologic studies of the basin fill which also bear on hydrologic issues. The upper San Pedro Valley in southeastern Arizona is an area of concern over ground water resources due to competing land uses which include commercial development, preservation of riparian environment, and mandated sustainability of water resources. In early 1997 an airborne electromagnetic survey was flown over the Fort Huachuca Military Reservation and immediately surrounding areas. The objectives were to gather data which would be used to help map geologic structures which might control ground water flow, to map the distribution of areas containing significant volume fraction of silt and clay in three dimensions, and to evaluate the utility of the method in mapping the depth to water beneath the Earth's surface. In addition, the survey provided a map of the magnetic anomaly field which was used to define the location of faults and fractures in the rocks beneath the basin (and in some cases within the basin fill) and to provide another set of estimates of depth of fill of the basin. ; U. S. Geological Survey Open-File Report 99-7A; 5.60 X 4.80 X 0.40 inches.…

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Détails bibliographiques

Titre
An Interpretation of the 1997 Airborne Electromagnetic (AEM( Survey, Fort Huachuca Vicinity, Cochine County, Arizona, with Digital Data
Auteur
Bultman, M. W. , Gettings, M. E. , and Wynn, Jeff
Éditeur
U. S. Geological Survey, Washington 25 D. C.
Année de publication
1999
État de l'article
Very Good
Reliure
CD-ROM
Poids de l'article
1 livre
Catalogues du vendeur
Earth Science, Mining

Crossroads Books

Reno, NV, Etats-Unis

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