Bøger i The Cryosphere Science Series serien

The cryosphere, that region of the world where water is temporarily or permanently frozen, plays a crucial role on our planet. Recent developments in remote sensing techniques, and the acquisition of new data sets, have resulted in significant advances in our understanding of all components of the cryosphere and its processes.

Provides the first comprehensive review of the current state of the science on tills It is critical that glacial scientists continue to refine their interpretations of ancient archives of subglacial processes, specifically those represented by tills and associated deposits, as they form the most widespread and accessible record of processes at the ice-bed interface. Unfortunately, despite a long history of investigation and a lexicon of process-based nomenclature, glacial sedimentologists have yet to reach a consensus on diagnostic criteria for identifying till genesis in the geological record. What should be called till? Based on the author's extensive field research, as well as the latest literature on the subject, this book attempts to provide a definitive answer to that question. It critically reviews the global till literature and experimental and laboratory-based assessments of subglacial processes, as well as the theoretical constructs that have emerged from process sedimentology over the past century. Drawing on a wide range of knowledge bases, David Evans develops a more precise, contemporary till nomenclature and new investigatory strategies for understanding a critical aspect of glacial process sedimentology. Provides an in-depth discussion of subglacial sedimentary processes, with an emphasis on the origins of till matrix and terminal grade and the latest observations on till evolution Describes contemporary laboratory and modelling experiments on till evolution and techniques for measuring strain signatures in glacial deposits Develops an updated till nomenclature based on an array of knowledge bases and describes new strategies for field description and analysis of glacial diamictons Written by an internationally recognised expert in the field, this book represents an important step forward in the modern understanding of glacial process sedimentology. As such, Till: A Glacial Process Sedimentology is an indispensable resource for advanced undergraduates and researchers in sedimentology, glacier science and related areas.

Glaciers are considered a key and an iconic indicator of climate change. The World Glacier Monitoring Service has noted that global alpine balance has been negative for 35 consecutive years. This highlights the dire future that alpine glaciers face.The goal of this volume is to tell the story, glacier by glacier, of response to climate change from 1984ΓÇô2015. Of the 165 glaciers examined in 10 different alpine regions, 162 have retreated significantly. It is evident that the changes are significant, not happening at a "glacial" pace, and are profoundly affecting alpine regions. There is a consistent result that reverberates from mountain range to mountain range, which emphasizes that although regional glacier and climate feedbacks differ, global changes are driving the response. This book considers ten different glaciated regions around the individual glaciers, and offers a different tune to the same chorus of glacier volume loss in the face of climate change.

A complete and timely reference on the application of geophysical methods to the cryosphere Applied Geophysics in the Cryospheric Sciences provides comprehensive coverage of the acquisition, processing, and use of geophysical data for understanding cryospheric problems. Bringing together contributions by world-renowned experts in the field, this authoritative volume presents up-to-date information on the properties and processes of debris-covered glaciers, permafrost and rock glaciers, ice, snow, and glacial sedimentary landforms. Individual sections focus on the application of geophysical techniques to subglacial and englacial ice, crustal-scale ice sheets, the structure and hydrology of snowpacks, the past and present flow of ice sheets and ice caps, the physical properties of sea ice over wide areas, and more. Encompassing all key geophysical methods, Applied Geophysics in the Cryospheric Sciences also includes GPS techniques for in situ monitoring of ice sheet and glacier flow, the processing of ice-mass GPS data, the interpretation of ice-electrical processes, and sonic and ultrasonic logging of deep ice boreholes, and recent advances in geophysical survey technology. Integrates geophysics with sedimentology and hydrology of cryosphereCovers the full spectrum of geophysical methods and approaches, including modeling, field observation, and remote sensingDiscusses long-term glacier behavior, paleorecord interpretation, and ice-mass change in response to climatic change Includes recent case studies from a wide range of international sources and explores the future outlook of the fieldPart of the Cryosphere Science series, Applied Geophysics in the Cryospheric Sciences is an indispensable resource for advanced students, academic researchers, applied scientists, and professionals working on cryospheric problems in fields such as geophysics, glaciology, geomorphology, and sedimentology.