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Author:
Publisher:
ISBN:
Category : Coastal ecology
Languages : en
Pages : 150
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Author:
Publisher:
ISBN:
Category : Coastal ecology
Languages : en
Pages : 150
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Author:
Publisher:
ISBN:
Category : Hydrology
Languages : en
Pages : 36
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Author:
Publisher:
ISBN:
Category : Hydrology
Languages : en
Pages : 32
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Author: Charlotte Munchmeyer Ashby
Publisher:
ISBN:
Category : Hydrology
Languages : en
Pages : 40
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Author: John Woeppel Conrad
Publisher:
ISBN:
Category : Artificial satellites in oceanography
Languages : en
Pages : 452
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Satellite IR images of the California coast off Point Sur reveal recurrent surface features which appear to be 'thermal discontinuities' associated with aperiodic upwelling events. Some of these have associated 'chemical fronts' and increased biological activity. Satellite IR imagery was used to locate 'discontinuities' and with in situ monitoring the development of three features were studied. Interrelationships between sea surface temperature nutrients and microplanktonic biomass were investigated. Nutrient ratios, satellite imagery, wind stress data and correlations between nutrients and temperature were used to develop an estimate of 'age' within a simplified upwelling 'life cycle' model. The features range in scale from tens to hundreds of kilometers. Two upwelling features exhibited very strong correlations between nutrient and temperature but a third feature had considerable nutrient variability. This suggests a considerable impact from the dynamic and biological processes. The technique of coupling satellite imagery and in situ monitoring was found to be a feasible method to provide real time inferences of the nutrient structure associated with an upwelled thermal feature. (Author).
Author: Kent S. Short
Publisher:
ISBN:
Category : Ocean circulation
Languages : en
Pages : 450
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Author: R. Boje
Publisher: Springer Science & Business Media
ISBN: 3642669859
Category : Science
Languages : en
Pages : 310
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Upwelling areas are among the most fertile regions of the ocean. In principle, upwelling is caused by the divergence of the flow in the surface layer of the ocean which arises as a consequence of a particular wind field, the presence of a coastline, or other special conditions. Since deeper oceanic layers are usually enriched wi th nutrients, it is the permanent supply of nutrients which forms the basis for the high producti vi ty of upwelling reg ions. The study of upwelling and its consequences were, for a long time, the task of individual scientists from all disciplines of marine science. Today, it is perhaps the branch of oceanography where interdisciplinary coopera tion has developed best. Becoming aware of the large potential yield of upwelling regions, governments in creased the funds for upwelling research. With research activities developed on a larger scale, interdisciplin ary cooperation became a necessity. On the international level, several symposia documented the rapid development. Three volumes reflect the results of these scientific meetings (Rapp. Proc.-Verb. 159, 1970; Inv. Pesq. 35, 1, 1971; Tethys §.' 1-2, 1974). The present book contains selected papers from the Third Symposium on Upwelling Ecosystems, which was held in Kiel in September 1975. Although the third of a series of meetings, it was the first where the word "ecosystem" stood in the title for a scientific program.
Author: Michael H. Glantz
Publisher: CRC Press
ISBN: 0429726228
Category : Science
Languages : en
Pages : 264
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The United Nations Water Conference (in Argentina in March 1977) and the United Nations Conference to Combat Desertification (in Kenya in August 1977) reflect the worldwide attention that recent global food shortages and growing populations have drawn to the destruction of arable and potentially arable land. This collection of articles focuses on a primary form of such destruction: desertification—the creation of desert-like conditions in arid or semiarid regions either by changes in climate patterns or by human mismanagement, or both. The contributors—representing a range of disciplines—examine and evaluate the social, political, economic, environmental, and technical problems related to the causes and effects of desertification.
Author:
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Category : Electronic journals
Languages : en
Pages : 838
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Author: United States. National Marine Fisheries Service. Industry and Consumer Services Division
Publisher:
ISBN:
Category : Fish meal industry
Languages : en
Pages : 134
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