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This volume examines three forms of groundwater recharge processes in the western margin of the Great Artesian Basin (GAB): ephemeral river recharge, diffuse recharge and mountain block recharge. It presents when and how recharge currently occurs and concludes that present day rates of groundwater recharge are much less than in the past.--P. xvi.
Documents the declining quality and quantity of springs around the world and efforts to preserve, protect, and restore them Anthropogenic causes, including climate change, have been degrading springs around the world. Changes in spring water quality and flow impact human health, cultural values, ecology, and livelihoods. Threats to Springs in a Changing World: Science and Policies for Protection presents a range of international studies illustrating the causes of spring degradation and strategies being used to safeguard springs both now and for the future. Volume highlights include: Examples of threatened springs in diverse hydrogeologic settings Innovative methods and tools for understanding the hydrogeology of spring systems Current policy and governance approaches for alleviating damage to springs Different approaches to management of springs A call for practitioners, policy makers, scientists, and the public to work together The American Geophysical Union promotes discovery in Earth and space science for the benefit of humanity. Its publications disseminate scientific knowledge and provide resources for researchers, students, and professionals.
This book presents the results of an interdisciplinary project that examined how law, policy and ecological dynamics influence the governance of regional scale water based social-ecological systems in the United States and Australia. The volume explores the obstacles and opportunities for governance that is capable of management, adaptation, and transformation in these regional social-ecological systems as they respond to accelerating environmental change. With the onset of the Anthropocene, global and regional changes in biophysical inputs to these systems will challenge their capacity to respond while maintaining functions of water supply, flood control, hydropower production, water quality, and biodiversity. Governance lies at the heart of the capacity of these systems to meet these challenges. Assessment of water basins in the United States and Australia indicates that state-centric governance of these complex and dynamic social-environmental systems is evolving to a more complex, diverse, and complex array public and private arrangements. In this process, three challenges emerge for water governance to become adaptive to environmental change. First, is the need for legal reform to remove barriers to adaptive governance by authorizing government agencies to prepare for windows of opportunity through adaptive planning, and to institutionalize the results of innovative solutions that arise once a window opens. Second, is the need for legal reform to give government agencies the authority to facilitate and participate in adaptive management and governance. This must be accompanied by parallel legal reform to assure that engagement of private and economic actors and the increase in governmental flexibility does not destabilize basin economies or come at the expense of legitimacy, accountability, equity, and justice. Third, development of means to continually assess thresholds and resilience of social-ecological systems and the adaptive capacity of their current governance to structure actions at multiple scales. The massive investment in water infrastructure on the river basins studied has improved the agricultural, urban and economic sectors, largely at the cost of other social and environmental values. Today the infrastructure is aging and in need of substantial investment for those benefits to continue and adapt to ongoing environmental changes. The renewal of institutions and heavily engineered water systems also presents the opportunity to modernize these systems to address inequity and align with the values and objectives of the 21st century. Creative approaches are needed to transform and modernize water governance that increases the capacity of these water-based social-ecological systems to innovate, adapt, and learn, will provide the tools needed to navigate an uncertain future.
This volume presents a summary of background knowledge of the climate, physiology, geology and hydrogeology of the western margin of the Great Artesian Basin (GAB) that can support the work of managers, scientists and risk assessors in relation to the GAB resource and its associated extractions.--P. xiii.
This book is a printed edition of the Special Issue "Environmental Tracers" that was published in Water
This book outlines the minimum requirements for constructing, maintaining, rehabilitating, and decommissioning water bores in Australia. It is used extensively by regulators and the drilling industry, and provides a consistent standard reference across Australia for the licensing of bores and drillers. The requirements focus on protecting groundwater resources from contamination, deterioration, and uncontrolled flow associated with poorly constructed bores, and on the construction of bores to provide a good water supply.
This guidebook provides theoretical and practical information for using a variety of isotope tracers for dating old groundwater, i.e. water stored in geological formations for periods ranging from about 1000 to one million years. Theoretical underpinnings of the methods and guidelines for their use in different hydrogeological environments are described. The guidebook also presents a number of case studies providing insight into how various isotopes have been used in aquifers around the world. The methods, findings and conclusions presented in this publication will enable students and practicing groundwater scientists to evaluate the use of isotope dating tools for specific issues related to the assessment and management of groundwater resources. In addition, the guidebook will be of use to the scientific community interested in issues related to radioactive waste disposal in geological repositories.
Presents a summary of each of the volumes and outlines the key tools, methods and information arising from the research.