Reconstructing Quaternary EnvironmentsRoutledge, 28 oct. 2014 - 568 pages This third edition of Reconstructing Quaternary Environments has been completely revised and updated to provide a new account of the history and scale of environmental changes during the Quaternary. The evidence is extremely diverse ranging from landforms and sediments to fossil assemblages and geochemical data, and includes new data from terrestrial, marine and ice-core records. Dating methods are described and evaluated, while the principles and practices of Quaternary stratigraphy are also discussed. The volume concludes with a new chapter which considers some of the key questions about the nature, causes and consequences of global climatic and environmental change over a range of temporal scales. This synthesis builds on the methods and approaches described earlier in the book to show how a number of exciting ideas that have emerged over the last two decades are providing new insights into the operation of the global earth-ocean-atmosphere system, and are now central to many areas of contemporary Quaternary research. This comprehensive and dynamic textbook is richly illustrated throughout with full-colour figures and photographs. The book will be of interest to undergraduates, postgraduates and professionals in Earth Science, Environmental Science, Physical Geography, Geology, Botany, Zoology, Ecology, Archaeology and Anthropology |
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... accumulation and ablation gradients, whereas studies of modern glaciers have shown that the ablation gradient usually tends to be steeper than the accumulation gradient (Oerlemans, 2001). The AABR method overcomes this problem by ...
... accumulation at the equilibrium line (Figure 2.22a) which, in turn, approximates average accumulation (A) over the whole glacier (Sutherland, 1984). For ten Norwegian glaciers, Ballantyne (1989) found that this relationship corresponds ...
... accumulation and mean summer temperature conditions (Ohmura et al., 1992). For reconstructed Quaternary glaciers, therefore, reference to such data allows summer temperature values to be estimated where the altitude of the former ...
... accumulation (defined as OctoberApril period) and mean temperature during the ablation season (MaySeptember) for modern glaciers in Norway. This curve has been used to estimate the temperature and precipitation values for former ...
... accumulation and ablation in the calculation of former ELAs (Ballantyne, 1989). Despite these limitations, this approach offers the potential for deriving quantitative palaeoclimatic data from, in the first instance, glacial ...
Autres éditions - Tout afficher
Reconstructing Quaternary Environments John Lowe,Mike Walker,Mike J. C. Walker Aucun aperçu disponible - 2014 |
Reconstructing Quaternary Environments J. John Lowe,Mike Walker,Mike J. C. Walker Aucun aperçu disponible - 2014 |