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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... permafrost (Figure 2.24), that is, ground that is permanently or seasonally frozen. Today continuous permafrost exists where mean annual air temperature(MAAT) is about or below 6 to 8°C (Smith & Riseborough, 2002). Those areas that are ...
... permafrost distribution in the northern hemisphere based on modern climatic data and computed 'frost index' values (FIVs) which define the southern limits of permafrost zones, as follows: continuous permafrost – FIV of 0.67; extensive ...
... sensing techniques (Grosse et al., 2005), and reflect the extensive areas of continuous and discontinuous permafrost that developed during the cold stages of the Quaternary. Patterned ground forms, for example, can frequently be identified.
... permafrost regions, and are nearly always found at the foot of steep cliffs, where they form steplike or lobate extensions ofthe lower parts of talus slopes (Harrison et al., 2008). Protalus lobes and rock glaciers are characteristic ...
... permafrost aggradation; and the 'opensystem' (hydraulic) orEast Greenland type, in which the ice core is fed by subsurface groundwater seepage from unfrozen parts of discontinuous permafrost. Smaller cryogenic mounds also occur in the ...
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 |