Agust Gudmundsson – författare

Rock fractures control many of Earth's dynamic processes, including plate-boundary development, tectonic earthquakes, volcanic eruptions, and fluid transport in the crust. An understanding of rock fractures is also essential for effective exploitation of natural resources such as ground water, geothermal water, and petroleum. This book combines results from fracture mechanics, materials science, rock mechanics, structural geology, hydrogeology, and fluid mechanics to explore and explain fracture processes and fluid transport in the crust. Basic concepts are developed from first principles and illustrated with worked examples linking models of geological processes to real field observations and measurements. Many additional examples and exercises are provided online, allowing readers to practise formulating and quantitative testing of models. Rock Fractures in Geological Processes is designed for courses at the advanced undergraduate and graduate level but also forms a vital resource for researchers and industry professionals concerned with fractures and fluid transport in the Earth's crust.

A volcanic eruption occurs when a magma-filled fracture propagates from its source to the surface. Analysing and understanding the conditions that allow this to happen constitute a major part of the scientific field of volcanotectonics. This new volume introduces this cutting-edge and interdisciplinary topic in volcanological research, which incorporates principles and methods from structural geology, tectonics, volcano-deformation studies, physical volcanology, seismology, and physics. It explains and illustrates the physical processes that operate inside volcanoes and which control the frequencies, locations, durations, and sizes of volcanic eruptions. Featuring a clear theoretical framework and helpful summary descriptions of various volcanic structures and products, as well as many worked examples and exercises, this book is an ideal resource for students, researchers and practitioners seeking an understanding of the processes that give rise to volcanic deformation, earthquakes, and eruptions.

A volcanic eruption occurs when a magma-filled fracture propagates from its source to the surface. Analysing and understanding the conditions that allow this to happen constitute a major part of the scientific field of volcanotectonics. This new volume introduces this cutting-edge and interdisciplinary topic in volcanological research, which incorporates principles and methods from structural geology, tectonics, volcano-deformation studies, physical volcanology, seismology, and physics. It explains and illustrates the physical processes that operate inside volcanoes and which control the frequencies, locations, durations, and sizes of volcanic eruptions. Featuring a clear theoretical framework and helpful summary descriptions of various volcanic structures and products, as well as many worked examples and exercises, this book is an ideal resource for students, researchers and practitioners seeking an understanding of the processes that give rise to volcanic deformation, earthquakes, and eruptions.

This is the first book describing the glorious geology of Iceland’s Golden Circle and four additional excursions:(1) the beautiful valleys and mountains of the fjord of Hvalfjördur, (2) the unique landscape and geothermal fields of the Hengill Volcano, (3) the explosion craters, volcanic fissures, and lava fields of the Reykjanes Peninsula, and (4) the volcanoes (Hekla, Eyjafjallajökull, Katla), waterfalls, sandur plains, and rock columns of South Iceland. The Golden Circle offers a unique opportunity to observe and understand many of our planet’s forces in action. These forces move the Earth’s tectonic plates, rupture the crust, and generate earthquakes, volcanic eruptions, channels for rivers and waterfalls, and heat sources for hot springs and geysers. The Golden Circle includes the famous rifting and earthquake fracture sites at Thingvellir, the hot springs of the Geysir area, the waterfall of Gullfoss, and the Kerid volcanic crater. As the book is primarily intended forpeople with no background in geosciences, no geological knowledge is assumed and technical terms are avoided as far as possible (those used are explained in a glossary). With more than 240 illustrations – mostly photographs – explaining geological structures and processes, it is also a useful resource for geoscientists.

This is the first book describing the glorious geology of Iceland’s Golden Circle and four additional excursions:(1) the beautiful valleys and mountains of the fjord of Hvalfjördur, (2) the unique landscape and geothermal fields of the Hengill Volcano, (3) the explosion craters, volcanic fissures, and lava fields of the Reykjanes Peninsula, and (4) the volcanoes (Hekla, Eyjafjallajökull, Katla), waterfalls, sandur plains, and rock columns of South Iceland. The Golden Circle offers a unique opportunity to observe and understand many of our planet’s forces in action. These forces move the Earth’s tectonic plates, rupture the crust, and generate earthquakes, volcanic eruptions, channels for rivers and waterfalls, and heat sources for hot springs and geysers. The Golden Circle includes the famous rifting and earthquake fracture sites at Thingvellir, the hot springs of the Geysir area, the waterfall of Gullfoss, and the Kerid volcanic crater. As the book is primarily intended forpeople with no background in geosciences, no geological knowledge is assumed and technical terms are avoided as far as possible (those used are explained in a glossary). With more than 240 illustrations – mostly photographs – explaining geological structures and processes, it is also a useful resource for geoscientists. 

Steigen Sie mit diesem einzigartigen Buch in die faszinierende Geologie von Islands Südwesten ein. Entdecken Sie entlang von fünf bekannten Touren die geologische Vielfalt dieser Insel: (1) Der berühmte "Goldene Ring" (Golden Circle), (2) Täler und Berge des Fjordes Hvalfjördur, (3) die einzigartige Landschaft und Geothermalfelder des Hengill-Vulkans, (4) Explosionskrater, Vulkanspalten und Lavafelder der Reykjanes-Halbinsel und (5) Vulkane (Hekla, Eyjafjallajökull, Katla), Wasserfälle, Sanderflächen und Basaltsäulen Südislands. Der Goldene Ring ermöglicht, die Kräfte unseres Planeten auf einzigartige Weise zu beobachten und zu verstehen. Diese Kräfte bewegen die tektonischen Platten, reißen die Kruste auf und führen zu Erdbeben, Vulkanausbrüchen, Flussbetten und Wasserfällen sowie Wärmequellen für heiße Quellen und Geysire. Der Goldene Ring umfasst Thingvellir, bekannt für Rifting und Erdbebenbrüche, die heißen Quellen von Geysir, den Wasserfall Gullfoss und den Vulkankrater Kerid. Dieses Buch wendet sich in erster Linie an interessierte Laien ohne geowissenschaftliche Vorkenntnisse. Aus diesem Grund wurde leicht verständliche Sprache gewählt, die mit wenigen geologischen Fachbegriffen auskommt.  Ein ausführliches Glossar liefert die Erklärung zu den einzelnen Begriffen. Auch für Geowissenschaftler ist dieses Buch wegen seiner über 240 Abbildungen – überwiegend Fotografien – von Interesse.