منابع مشابه
Dust storms and ephemeral lakes
In drylands, both dust storms and ephemeral salt lakes (playas) are common. Observations using remote sensing and ground studies have shown that these playas can be major sources of saline dust storms. Some basins have recently become desiccated as a result of water abstraction by humans, and these have become significant sources of dust. The timing and amounts of dust emissions depends on such...
متن کاملEphemeral lakes and desert dust sources
[1] The processes that determine which areas are strong sources of mineral aerosols are not well known. In this study we consider the role of ephemeral lakes in modulating emissions of atmospheric mineral aerosols. We focus on two ephemeral lake regions that have been identified as source regions: the zone of Chotts in Tunisia and Algeria, and Etosha Pan in Namibia. Comparisons of satellite ret...
متن کاملSeasonal characterization of CDOM for lakes in semi-arid regions of Northeast China
Introduction Conclusions References
متن کاملSemi-arid Regions and Deserts
12.2 Biological Crusts of Arid Regions ............................. 346 12.2.1 Characteristic Species ................................................... 346 12.2.2 Taxonomic Problems in Describing Crust Cyanobacteria ...................................................... 347 12.2.3 Environmental Factors .................................................. 348 12.2.3.1 Light .......................
متن کاملfactors controlling the morphology and volume –length relations of ephemeral gullies in the western arid regions of iran
understanding the development of gully volumes requires the empirical relations between gully volume (v) and length (l) to be established in the field. so far, such v–l relations have been proposed for a limited number of gullies/environments and were especially developed for ephemeral gullies.in this study, v–l relations were established for ephemeral gullies in southern ilam. in order to take...
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ژورنال
عنوان ژورنال: American Journal of Science
سال: 1903
ISSN: 0002-9599
DOI: 10.2475/ajs.s4-16.95.377