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  • Other Sources  (3)
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  • 1
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    Transient propagation of electromagnetic waves in a stratified plasma (1971)
    In:  Other Sources
    Details
    Publication Date: 2019-06-27
    Description: Transient electromagnetic wave propagation in lossy directionally anisotropic time varying stratified plasma, using characteristics method
    Keywords: PHYSICS, PLASMA
    Type: ; ADEMIE DES SCIENCES
    Format: text
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    NASA TECHNICAL REPORTS
  • 2
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    Packaging and distributing ecological data from multisite studies (1996)
    In:  CASI
    Details
    Publication Date: 2019-08-15
    Description: Studies of global change and other regional issues depend on ecological data collected at multiple study areas or sites. An information system model is proposed for compiling diverse data from dispersed sources so that the data are consistent, complete, and readily available. The model includes investigators who collect and analyze field measurements, science teams that synthesize data, a project information system that collates data, a data archive center that distributes data to secondary users, and a master data directory that provides broader searching opportunities. Special attention to format consistency is required, such as units of measure, spatial coordinates, dates, and notation for missing values. Often data may need to be enhanced by estimating missing values, aggregating to common temporal units, or adding other related data such as climatic and soils data. Full documentation, an efficient data distribution mechanism, and an equitable way to acknowledge the original source of data are also required.
    Keywords: Documentation and Information Science
    Type: NASA-CR-204757 , NAS 1.26:204757 , CONF-961119-3 , DE96-014667 , Eco-Informa; Nov 04, 1996 - Nov 07, 1996; Lake Buena Vista, FL; United States
    Format: application/pdf
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    NASA TECHNICAL REPORTS
  • 3
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    Analysis of the demersal community of fish and cephalopods on the Agulhas Bank, South Africa (1993)
    Wiley
    In:  Journal of Fish Biology, 43 (Suppl. A). pp. 169-191.
    Details
    Publication Date: 2021-05-05
    Description: The demersal fish and cephalopod communities of the continental shelf and upper slope from 17 to 395m deep were studied during five annual cruises between Cape Agulhas and Port Alfred, South Africa. The cruises showed a consistent pattern of an inshore community (〈100m), a shelf community (c. 90–190m) and a shelf‐edge/upper slope fauna (〉200m). These groups were identified by dendrograms and multidimensional scaling cluster analysis, which supported on‐board observations of catch variation with depth. Although the boundaries are not clearly defined, examination of physical features at the clustered stations suggests that depth, temperature and, to a lesser extent, oxygen concentration are important in the grouping. Occasional, apparently anomalous associations of inshore stations suggested that water temperature and oxygen may over‐ride the normal depth distributions of the species groups. This intimates that patterns offish and cephalopod distribution may be dynamic and in part related to the physical parameters of the water body.
    Type: Article , PeerReviewed
    Format: text
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    PAPER (OCEANREP)
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