This unique addition to reference literature provides an introduction to the major concepts and contemporary issues that are essential for students of environmental science and environmental studies to know. With over 200 entries authored by world-class names like Anthony Brazel, John Day and Edward Keller, this text is divided into six sections: Environmental Science, Environments, Paradigms & Concepts, Processes & Dynamics, Scales & Techniques, and Environmental Issues.
Periglacial, a term first used by Lozinski (1909) to describe frost weathering conditions in the Carpathians, is used for the type of climate and the climatically controlled surface features and processes adjacent to glaciated areas. Subsequently, periglacial environment was extended to apply to non-glacial processes and features of cold climates, including freeze-thaw processes and frost action typical of the processes in the periglacial zone and in some cases the processes associated with permafrost, but also found in high altitude, alpine, areas of temperate regions. Periglacial environments at present cover approximately 20% of the Earth's land surface, and were extensive in the past occurring extensively in parts of central Siberia and Alaska and the Yukon in western North America which were not glaciated for ...