Aeolian sand and sand dunes
著者
書誌事項
Aeolian sand and sand dunes
Unwin Hyman, 1990
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注記
Bibliography: p. [344]-391
Includes index
内容説明・目次
内容説明
Written principally for use by more advanced undergraduates, postgraduates and senior research workers in geomorphology and sedimentology, the emphasis is on physical processes and sediment properties rather than ecology, human usage and management. This book attempts to review the whole field of aeolian sand research and to provide as broad a perspective as possible, and to draw attention to an extensive multi-disciplinary scientific literature.
目次
- The nature and importance of aeolian sand research
- the nature of airflow - physical properties of air and the Earth's atmosphere, nature and types of air motion, storm types that generate sand transporting winds, flow in the atmospheric boundary layer
- characterisitics of windblow sediments - general properties of sediment grains, grain shape, porosity and permeability and grain package arrangement, grain size characterisitics of aeolian sediments, shape characterisitics of aeolian dune sands, surface textures on aeolian sand grains, porosity and permeability of aeolian sands, sources and mineralogical composition of aeolian sand
- mechanics of aeolian sand transport - particle entrainment, transport of particles by the wind
- the formation of sand seas and dunefields - definition of sand seas and dunefields, global distribution of sand seas, factors controlling the distribution and magnitude of sand seas, development of sand seas in relation to topography, wind regime and regional sandflow paths, evolution of sand sea in response to climatic changes, effect of sea level change on development of coastal dunefields, effect of sea level change on continental dunefields
- aeolian bedforms - types of aeolian sand accumulation and bedform terminology, ripples, sand dunes, formation of dunes influenced by vegetation (phyotegenic dunes), sand sheets, summary of factors determining the morphology of aeolian sand accumulations
- internal sedimentary structures of aeolian sand deposits - the general nature of internal structures, sand dune internal structures, secondary sedimentary structures in dunes, sedimentary structures of interdune areas and sand sheets, structures characteristic of niveo-aeolian deposits and cold-climate dunes
- post-depositional modification of sand dunes - denudation by rainsplash, surface wash soil creep and gullying, near-surface compaction, addition of allochthonous material, weathering and pedogenesis of siliceous dune sands, formation of carbonate aeolinites, early diagenetic cementation by evaporate minerals
- management and human use of sand dune environments - physical properties of sand which influence vegetation growth, water courses in sand dune areas, control of windblown sand, human use of sand dune areas
- aeolian research methods - wind tunnel studies, measurement of sand movement using sand traps, sand tracer techniques, methods of sample collection for grain size and mineralogical analysis, methods of grain size determination, characterization of airflow, methods of monitoring rates of morphological change. Appendix: SI units with C.G.S. equivalents.
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