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Estimating Groundwater Recharge
Understanding groundwater recharge is essential for successful management of water resources and modeling fluid and contaminant transport within the subsurface. This book provides a critical evaluation of the theory and assumptions that underlie methods for estimating rates of groundwater recharge. Detailed explanations of the methods are provided - allowing readers to apply many of the techniques themselves without needing to consult additional references. Numerous practical examples highlight benefits and limitations of each method. Approximately 900 references allow advanced practitioners to pursue additional information on any method. For the first time, theoretical and practical conside...
Global Groundwater
Global Groundwater: Source, Scarcity, Sustainability, Security, and Solutions presents a compilation of compelling insights into groundwater scenarios within all groundwater-stressed regions across the world. Thematic sub-sections include groundwater studies on sources, scarcity, sustainability, security, and solutions. The chapters in these sub-sections provide unique knowledge on groundwater for scientists, planners, and policymakers, and are written by leading global experts and researchers. Global Groundwater: Source, Scarcity, Sustainability, Security, and Solutions provides a unique, unparalleled opportunity to integrate the knowledge on groundwater, ranging from availability to pollut...
Groundwater Recharge in a Desert Environment
Published by the American Geophysical Union as part of the Water Science and Application Series, Volume 9. Groundwater recharge, the flux of water across the water table, is arguably the most difficult component of the hydrologic cycle to measure. In arid and semiarid regions the problem is exacerbated by extremely small recharge fluxes that are highly variable in space and time. --from the Preface Groundwater Recharge in a Desert Environment: The Southwestern United States speaks to these issues by presenting new interpretations and research after more than two decades of discipline-wide study. Discussions ondeveloping environmental tracers to fingerprint sources and amounts of groundwater at the basin scalethe critical role of vegetation in hydroecological processesnew geophysical methods in quantifying channel rechargeapplying Geographical Information System (GIS) models to land surface processescoupling process-based vadose zone to groundwater modeling, and more make this book a significant resource for hydmlogists, biogeoscientists, and geochemists concerned with water and water-related issues in arid and semiarid regions.
Collective Aquifer Governance
Modern models of groundwater governance require a rethink of scale and jurisdictional boundaries. Using case studies and a gaming activity to explore the incentives and challenges to aquifer governance, this book demonstrates how the principles of unitization agreements, applied to aquifers, could provide a new approach to governance models.
Liquid Asset
A sweeping, policy-oriented account of the private and public management of the world's essential natural resource. Governments dominated water management throughout the twentieth century. Tasked with ensuring a public supply of clean, safe, reliable, and affordable water, governmental agencies controlled water administration in most of the world. They built the dams, reservoirs, and aqueducts that store water when available and move that water to areas with increasing populations and economies. Private businesses sometimes played a part in managing water, but typically in a supporting position as consultants or contractors. Today, given the global need for innovative new technologies, insti...
Water, Peace, and War
Now in an updated edition, this pioneering and authoritative study considers the profound impact of the growing global water crunch on international peace and security as well as possible ways to mitigate the crisis. Although water is essential to sustaining life and livelihoods, geostrategist Brahma Chellaney argues that it remains the world’s most underappreciated and undervalued resource. One sobering fact is that the retail price of bottled water is already higher than the international spot price of crude oil. But unlike oil, water has no substitute, raising the specter of water becoming the next flashpoint for conflict. Water war as a concept may not mesh with the conventional constr...
Vadose Zone Hydrology
The vadose zone is the region between ground level and the upper limits of soil fully saturated with water. Hydrology in the zone is complex: nonlinear physical, chemical, and biological interactions all affect the transfer of heat, mass, and momentum between the atmosphere and the water table. This book takes an interdisciplinary approach to vadose zone hydrology, bringing together insights from soil science, hydrology, biology, chemistry, physics, and instrumentation design. The chapters present state-of-the-art research, focusing on new frontiers in theory, experiment, and management of soils. The collection addresses the full range of processes, from the pore-scale to field and landscape scales.
Soil Physics Companion
An authoritative reference on soil physics, Soil Physics Companion is lavishly illustrated with graphs, charts, line drawings, and equations. The book provides a valuable source of material and reference for most contemporary topics of soil physics and the vadose zone - arguably the most comprehensive volume available. In addition to being a reliab
Energy and Security
The second, completely updated edition of this widely read and respected guide is the most authoritative survey available on the perennial question of energy security. Energy and Security gathers today's topmost foreign policy and energy experts and leaders to assess how the United States can integrate its energy and national security interests. This edition offers fresh analysis and insight into • Fundamental shifts in the global energy balance • The revolution in shale gas and oil • New energy frontiers, from ultra deepwater to the Arctic • The rising agenda of safety concerns across the energy complex • Energy poverty • Infrastructure for modernizing power grids • Climate security in the current political and economic environment The contributors offer a lively discussion of the challenges and opportunities presented by these changes and how they affect national security and regional politics around the globe.
Integrating Multiscale Observations of U.S. Waters
Water is essential to life for humans and their food crops, and for ecosystems. Effective water management requires tracking the inflow, outflow, quantity and quality of ground-water and surface water, much like balancing a bank account. Currently, networks of ground-based instruments measure these in individual locations, while airborne and satellite sensors measure them over larger areas. Recent technological innovations offer unprecedented possibilities to integrate space, air, and land observations to advance water science and guide management decisions. This book concludes that in order to realize the potential of integrated data, agencies, universities, and the private sector must work together to develop new kinds of sensors, test them in field studies, and help users to apply this information to real problems.
