共查询到20条相似文献，搜索用时 31 毫秒
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Studia Geophysica et Geodaetica - 相似文献
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L.V. Bastian 《Quaternary Geochronology》2010,5(1):76-77
A proposal that the yellow sands which commonly overlie Pleistocene eolianites along the west coast of Western Australia may have their origin from major extensions of inland deserts during times of severe aridity, is refuted on several grounds. The eolianites typically are deeply degraded remnants of the original coastal dunes, which contained a high content of non-calcareous detritus. Hence plentiful residual sand will accumulate during weathering of a dune. Studies on heavy mineral content of the yellow sands have shown that there is an inland ageing trend consistent with local derivation from successive dune belts, and have also pointed to local sources for yellow color in the sand, without need to postulate a distant source. Localized denudations have however occurred, during which sand is blown inland to leave tracts of bared limestone. No remnants of the alleged desert extensions exist in the hinterland of the coastal belt. 相似文献
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<正>The author,Prof Subhasish Dey,presents an up-to-date and comprehensive consideration of hydrodynamic principles to analyze sediment transport phenomenon.The author is well known in the field of applied hydrodynamics and sediment transport,with wide experience in theoretical and applied research.The book is intended for postgraduate and research students,who already have a decent knowledge and understanding of fluid mechanics,as well as for model developers and users of theoretical models in the fluvial hydrodynamics field.The author's intention is to introduce the readers to the mechanics and physics of sediment transport by turbulent flow, 相似文献
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Studia Geophysica et Geodaetica - 相似文献
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V. G. Eselevich V. M. Bogod I. V. Chashey M. V. Eselevich Yu. I. Yermolaev 《Geomagnetism and Aeronomy》2009,49(1):133-135
The solar sources of the magnetic storms of November 8 and 10, 2004, are analyzed. The preliminary results of such an analysis [Yermolaev et al., 2005] are critically compared with the results of the paper [Tsurutani et al., 2008], where solar flares were put in correspondence with these magnetic storms. The method for determining solar sources that cause powerful magnetospheric storms is analyzed. It has been indicated that an optimal approach consists in considering coronal mass ejections (CMEs) as storm sources and accompanying flares as additional information about the location of CME origination. 相似文献
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Studia Geophysica et Geodaetica - 相似文献
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