Publications
Filter Total Items: 56
Groundwater resources of Ribeira Paúl basin, island of Santo Antão, Cape Verde, West Africa
Groundwater resources in Cape Verde provide water for agriculture, industry, and human consumption. These resources are limited and susceptible to contamination. Additional groundwater resources are needed for continued agricultural development, particularly during times of drought, but increased use and (or) climatic change may have adverse effects on the quantity and quality of freshwater availa
Authors
Victor M. Heilweil, Stephen B. Gingerich, Ingrid M. Verstraeten
Groundwater resources of Mosteiros basin, island of Fogo, Cape Verde, West Africa
Groundwater resources in Cape Verde provide water for agriculture, industry, and human consumption. These resources are limited and susceptible to contamination. Additional groundwater resources are needed for continued agricultural development, particularly during times of drought, but increased use and (or) climatic change may have adverse effects on the quantity and quality of freshwater availa
Authors
Victor M. Heilweil, Stephen B. Gingerich, Niel Plummer, Ingrid M. Verstraeten
Oxygen, hydrogen, and helium isotopes for investigating groundwater systems of the Cape Verde Islands, West Africa
Stable isotopes (??18O, ??2H), tritium (3H), and helium isotopes (3He, 4He) were used for evaluating groundwater recharge sources, flow paths, and residence times of three watersheds in the Cape Verde Islands (West Africa). Stable isotopes indicate the predominance of high-elevation precipitation that undergoes little evaporation prior to groundwater recharge. In contrast to other active oceanic h
Authors
V.M. Heilweil, K.D. Solomon, S. B. Gingerich, Ingrid M. Verstraeten
Water-balance simulations of runoff and reservoir storage for the Upper Helmand watershed and Kajakai Reservoir, central Afghanistan
A study was performed to provide information on monthly historical and hypothetical future runoff for the Upper Helmand watershed and reservoir storage in Kajakai Reservoir that could be used by Afghanistan authorities to make economic and demographic decisions concerning reservoir design and operation, reservoir sedimentation, and development along the Helmand River. Estimated reservoir volume at
Authors
Kevin C. Vining, Aldo V. Vecchia
Atmospheric bromine flux from the coastal Abu Dhabi sabkhat: A ground-water mass-balance investigation
A solute mass-balance study of ground water of the 3000 km2 coastal sabkhat (salt flats) of the Emirate of Abu Dhabi, United Arab Emirates, documents an annual bromide loss of approximately 255 metric tons (0.0032 Gmoles), or 85 kg/km2. This value is an order of magnitude greater than previously published direct measurements from the atmosphere over an evaporative environment of a salar in Bolivia
Authors
W.W. Wood, W. E. Sanford
Evaluation of baseline ground-water conditions in the Mosteiros, Ribeira Paul, and Ribeira Fajã Basins, Republic of Cape Verde, West Africa, 2005-06
This report documents current (2005-06) baseline ground-water conditions in three basins within the West African Republic of Cape Verde (Mosteiros on Fogo, Ribeira Paul on Santo Antão, and Ribeira Fajã on São Nicolau) based on existing data and additional data collected during this study. Ground-water conditions (indicators) include ground-water levels, ground-water recharge altitude, ground-water
Authors
Victor M. Heilweil, John D. Earle, Jay R. Cederberg, Mickey M. Messer, Brent E. Jorgensen, Ingrid M. Verstraeten, Miguel A. Moura, Arrigo Querido, Spencer, Tatiana Osorio
Ad Duwayhi, Saudi Arabia: Geology and geochronology of a neoproterozoic intrusion-related gold system in the Arabian shield
The Ad Duwayhi gold deposit, located in the east-central part of the Arabian shield, is the newest gold discovery in Saudi Arabia. Exploration to date has identified a gold resource of greater than 1 million ounces (oz) with significant potential for expansion. Gold mineralization was closely associated, in time and space, with emplacement of a late- to postorogenic, intracrustal, northwest-orient
Authors
Jeff L. Doebrich, S.G. Zahony, J.D. Leavitt, J.S. Portacio, A.A. Siddiqui, Joseph L. Wooden, Robert J. Fleck, Holly J. Stein
Source of solutes to the coastal sabkha of Abu Dhabi
An ascending-brine model is proposed to address the observed isotope geochemistry, solute composition, and solute and water fluxes in the coastal sabkha of the Emirate of Abu Dhabi. Mass-balance measurements document that >95% of the solutes are derived from ascending continental brines; minor amounts are derived from rainfall and from groundwater entering from upgradient areas. Nearly 100% of the
Authors
W.W. Wood, W. E. Sanford, A.R.S. Al Habshi
Hydrology of the coastal sabkhas of Abu Dhabi, United Arab Emirates
Water fluxes were estimated and a water budget developed for the land surface and a surficial 10-m-deep section of the coastal sabkhas that extend from the city of Abu Dhabi, United Arab Emirates, west to the border with Saudi Arabia. The fluxes were estimated on the basis of water levels and hydraulic conductivities measured in wells and evaporation rates measured with a humidity chamber. In cont
Authors
Ward E. Sanford, Warren W. Wood
Change analysis in the United Arab Emirates: An investigation of techniques
Much of the landscape of the United Arab Emirates has been transformed over the past 15 years by massive afforestation, beautification, and agricultural programs. The "greening" of the United Arab Emirates has had environmental consequences, however, including degraded groundwater quality and possible damage to natural regional ecosystems. Personnel from the Ground- Water Research project, a joint
Authors
Terry L. Sohl
Simulation of aquifer storage recovery of excess desalinated seawater, al ain area, Abu Dhabi Emirate
No abstract available.
Authors
C. B. Hutchinson
Bibliography of National Drilling Company--United States Geological Survey reports on the water resources of Abu Dhabi Emirate, 1987-1997
No abstract available.
Authors
C. B. Hutchinson