Isotope Hydrology


Book Description

Within the realm of the newly evolving discipline of environmental sciences, the stable-isotope methodology is being used to an ever-increasing extent, especially in the study of the water cycle and of paleo-climatology. This book introduces the rules of the game, by reviewing the natural variability of stable isotopes in the hydrosphere, describing the physico-chemical basis of isotope fractionation, and applying this knowledge to natural waters as they move through the hydrologic cycle from the ocean to the atmosphere, the biosphere and the lithosphere. There is a special focus on the processes at the surface?atmosphere and land?biosphere?atmosphere interfaces, since these are the sites of major changes in isotope composition. In response to the increasing awareness of our changing climate, a discussion on the global view of the changing water cycle, in the past and future, winds up the presentation.




Isotopes in the Water Cycle


Book Description

Environmental isotope and nuclear techniques provide unmatched insights into the processes governing the water cycle and its variability. This monograph presents state of the art applications and new developments of isotopes in hydrology, environmental disciplines and climate change studies. Coverage ranges from the assessment of groundwater resources in terms of recharge and flow regime to studies of the past and present global environmental and climate changes.




Stable Isotope Studies of the Water Cycle and Terrestrial Environments


Book Description

This volume is devoted to Earth surface environmental reconstructions and environmental changes that may be deciphered and modelled using stable isotopes along with mineralogical/chemical, sedimentological, palaeontological/biological and climatological methodologies. The book is divided into two sections, both using stable isotopes (see www.geolsoc.org.uk/SP507) in various samples and phases as the main research tool. The first section is devoted to studies focusing on the distribution of isotopes in precipitation, groundwater, lakes, rivers, springs, tap water, mine water and their relationship with terrestrial environments at regional to continental scale. In relation to this, the second section includes case studies from a range of continental settings, investigating cave deposits (stalagmites, bat guano), animal skeletons (dinosaurs, alligators, turtles, bivalves), present and past soils (palaeosols) and limestones. The sections focus on the interaction between the surficial water cycle and underground water storage with deposits acting as archives of short- to long-term climatic and environmental changes. Examples from the Early Cretaceous to present time come from Europe, Asia, Africa, North and South America.




Groundwater Recharge from Run-off, Infiltration and Percolation


Book Description

To face the threats to the water supply and to maintain sustainable water management policies, detailed knowledge is needed on the surface-to-subsurface transformation link in the water cycle. Recharge flux is covered in this book as well as many other groundwater issues, including a comparison of the traditional and modern approaches to determine groundwater recharge. The authors also explain in detail the fate of groundwater recharge in the subsurface by hydraulic and geologic means, in order to stimulate adapted groundwater-management strategies.




Isotope Hydrology


Book Description




Rainfall - Observations and Modelling


Book Description

This book provides chapters with subjects ranging from the basic understanding of rainfall variability to the impact of climate change with novel methodologies and concepts. This book is mainly intended for post-graduate doctoral students and early career researchers for their use in academic and research programs. This book compiles the chapters with different data sets that are publicly available and from site-based measurements along with the data generation methods and modeling aspects. Rainfall plays an important role; its deficiency leads to meteorological droughts and further impacts hydrological, agricultural, and socioeconomic droughts, and its surplus causes floods over urban areas. With the advancement of technology, it is possible to determine future rainfall accurately by collating the data from observations, radar, and satellite and model simulations. The current book is of immense help in evaluating and understanding the atmospheric processes governed by the various physical laws, and the results of the chapters provide deep insight for a better understanding of rainfall phenomena across the different regions of the world.







Chemical Events in the Atmosphere and their Impact on the Environment


Book Description

This book covers the proceedings of a study week held to bring together the most varied experiences in the many disciplines which form the background of ecology. The purpose of the meeting was to examine the present state of knowledge and the need for research in order to gather the information necessary for action to protect the environment and biosphere. Many aspects of the anthropogenic effects on the atmosphere have been studied. However more research is needed to quantify the impact of the various chemicals on the changes occurring in the atmosphere. Acid rain formation mechanisms, although investigated, are not yet fully understood. It is thus necessary to program carefully our future, after further interdisciplinary research, in order to avoid irreversible damage to our environment.The guidelines of this action, as a result of the presentations and discussions, are reported in the conclusions. The main points stressed are: tropospheric chemistry, the problem of the conservation of the ozone layer, the growth of carbon dioxide and climate changes, atmospheric acidity, the effects of changes on water, soils and biota as well as the particular problems of the tropical world. The book will be ideal for postgraduates studying atmospheric chemistry and for environmental protection agencies.







Isotopes in Hydrology, Hydrogeology and Water Resources


Book Description

Table of Contents Ch. 1 Introduction 1 Ch. 2 Basic concepts of nuclear physics 8 Ch. 3 Nuclear instrumentation techniques 25 Ch. 4 Environmental isotopes of water molecule and the applications 37 Ch. 5 Tritium, radio carbon and chlorine-36 dating 69 Ch. 6 Chlorofluorocarbons (C Cl[subscript 3]F, CFC - 11, and C Cl[subscript 2]F[subscript 2]) CFC-12 as dating tools and hydrologic tracers 93 Ch. 7 Artificial radioactive isotopes as tracers in surface, subsurface and ground water resources 99 Ch. 8 Application of sealed sources 122 Ch. 9 Sediment studies 149.