Kurt Bucher – Författare

This text deals with deep groundwater in the granite and gneiss basement of the continents. It has become evident during the past years that highly mineralized water is present in an interconnected fracture network of the basement. Thus, the upper part of the crust of the continents can be viewed as an aquifer and investigated with tools common in hydrogeology. This book presents accounts on water-conducting features of crystalline rocks and summarizes the hydraulic properties of the basement. The volume includes reviews, new data and research on the often remarkable chemical composition of deep groundwater. Microbial processes in the deep basement aquifer are probably more important than previously thought. Two contributions focus on this recent extension of research of the biosphere to greater depth in the Earth. This book should be of interest to hydrologists and hydrogeologists working with water in crystalline rocks, but also to solid earth geophysicists, geochemists and petrologists with an interest in fluids in the crust. Scientists involved in nuclear waste disposal programs and geothermal energy development should also find many ideas in this volume useful.

The internal heat of the planet Earth represents an inexhaustible reservoir of thermal energy known as Geothermal Energy. Geothermal Energy is a base load energy available at all times independent of climate and weather.

The internal heat of the planet Earth represents an inexhaustible reservoir of thermal energy known as Geothermal Energy. Geothermal Energy is a base load energy available at all times independent of climate and weather.

This new edition of the classic textbook presents a large number of diagrams showing the stability relations among minerals and groups of minerals found in metamorphic rocks. Part I defines basic principles of metamorphism, introduces metamorphic processes, geologic thermometry and barometry and defines metamorphic grade.

Petrogenesis of Metamorphic Rocks presents a large number of diagrams showing the stability relations among minerals and groups of minerals found in metamorphic rocks. Part I defines basic principles of metamorphism, introduces metamorphic processes, geologic thermometry and barometry and defines metamorphic grade.

Geothermal energy is a form of renewable energy and its use is associated with very little or no CO2-emissions and its importance as an energy source has greatly increased as the effects of climate change become more prominent.

Dieses Buch vermittelt umfassend die Grundlagen und technischen Anwendungen der Geothermie als erneuerbare Energiequelle und zeigt das enorme Potenzial der Erdwärmenutzung als Grundlastenergie für eine umweltfreundliche Energieversorgung auf. Nach einer Einführung in die physikalischen und chemischen Grundlagen der natürlichen geothermischen Energie werden die wichtigsten thermischen und hydraulischen Parameter sowie alle derzeit verfügbaren geothermischen Nutzungssysteme – von oberflächennahen bis zu tiefen Geothermieanlagen – im Detail besprochen. Dies umfasst die Planung, den Bau und Betrieb von Erdwärmesonden, hydrothermalen Anlagen, Untergrundspeichern, EGS-Systemen und Hochenthalpienutzungen. Dabei liegt der Fokus sowohl auf der Effizienz als auch auf den potenziellen Umweltauswirkungen dieser Systeme.In der 4., überarbeiteten und aktualisierten Auflage werden zudem die neuesten Entwicklungen in der Geothermie vorgestellt, wie etwa die Möglichkeiten zur Sektorkopplung durch neu entwickelte Großwärmepumpen und die CO2-Sequestrierung in Hochenthalpie-Anlagen. Besondere Kapitel widmen sich der Hydraulik – inklusive der Durchführung und Auswertung hydraulischer Tests – der Hydrochemie, der Herkunft der Tiefenfluide, der Abschätzung von Reservoirtemperaturen mittels Geothermometern sowie den geophysikalischen Untersuchungsmethoden an der Erdoberfläche und im Bohrloch.Mit dieser Auflage wird die Geothermie erstmalig in ihrer gesamten Breite abgedeckt, und durch praxisnahe Erklärungen bietet das Buch eine wertvolle Grundlage für Forschende, Planer und Anwender im Bereich der geothermischen Energie.

Hydrogeology of Crystalline Rocks deals with deep groundwater in the granite and gneiss basement of the continents. It has become evident during the past years that highly mineralized water is present in an interconnected fracture network of the basement. Thus, the upper part of the crust of the continents can be viewed as an aquifer and investigated with tools common in hydrogeology. This book presents accounts on water-conducting features of crystalline rocks and summarizes the hydraulic properties of the basement. The volume includes reviews, new data and research on the often remarkable chemical composition of deep groundwater. Microbial processes in the deep basement aquifer are probably more important than previously thought. Two contributions focus on this recent extension of research of the biosphere to greater depth in the Earth. This book represents the first multidisciplinary and integrated account of deep groundwater hydrology in crystalline basement. It is of interest to hydrologists and hydrogeologists working with water in crystalline rocks, but also to solid earth geophysicists, geochemists and petrologists with an interest in fluids in the crust.Scientists involved in nuclear waste disposal programs and geothermal energy development will find a wealth of stimulating ideas in this volume.

The chemical interaction of water and rock is one of the most fascinating an d multifaceted process in geology. The composition of surface water and groundwater is largely controlled by the reaction of water with rocks and minerals. At elevated temperature, hydrothermal features, hydrothermal 0 re deposits and geothermal fields are associated with chemical effects of water-rock interaction. Surface outcrops of rocks from deeper levels in the crust, including exposures of lower crustal and mantle rocks, often display structures that formed by interaction of the rocks with a supercritical aqueous fluid at very high pT­ conditions. Understanding water-rock interaction is also of great importance to applied geology and geochemistry, particularly in areas such as geothermal energy, nuclear waste repositories and applied hydrogeology. The extremely wide-ranging research efforts on the universal water-rock interaction process is reflected in the wide diversity of themes presented at the regular International Symposia on Water-Rock Interaction (WRI). Because of the large and widespread interest in water-rock interaction, the European Union of Geosciences organized a special symposium on "water-rock interaction" at EUGI0, the biannual meeting in Strasbourg 1999 convened by the editors of this volume. In contrast to the regular WRI symposia addressed to the specialists, the EUG 10 "water-rock interaction" symposium brought the subject to a general platform This very successful symposium showed the way to the future of water-rock reaction research.