Intercomparison of in situ suspended matter (floc) size measurements
| Autor: | D. Eisma, A.J. Bale, W. van Leussen, A. Pfeiffer, M.J. Fennessy, M.-A. Maldiney, John T. Wells, M.P. Dearnaley |
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| Přispěvatelé: | Netherlands Inst. for Sea Research, P.O. Box 59, 1790 AB Den Burg, Texel, affiliation inconnue, Plymouth Marine Laboratory, Prospect Place, West Hoe, Plymouth PL1 3DH, HR Wallingford Limited, Institute of Marine Studies, University of Plymouth, Drake Circus, Plymouth PL4 8AA, Rijksinstituut Voor Kust en Zee/RIKZ, P.O. Box 20907, 2500 EX Den Haag, CERGRENE (CERGRENE), Ecole Nationale du Génie Rural, des Eaux et des Forêts (ENGREF)-École des Ponts ParisTech (ENPC), Inst. F. Biogeochemie Meereschemie, Martin-Luther-King Platz 6, D-20146 Hamburg 13, Institute of Marine Sciences, Univ. of N. Carolina at Chapel Hill, 3431 Arendell Street, Morehead City, NC 28557, United States, Enpc, Ist |
| Jazyk: | angličtina |
| Rok vydání: | 1996 |
| Předmět: |
0106 biological sciences
In situ Hydrology [SDE] Environmental Sciences Flocculation 010504 meteorology & atmospheric sciences 010604 marine biology & hydrobiology Soil science Aquatic Science Oceanography 01 natural sciences Degree (temperature) Volume (thermodynamics) Consistency (statistics) [SDE]Environmental Sciences Range (statistics) Environmental science Particle Suspended matter Ecology Evolution Behavior and Systematics 0105 earth and related environmental sciences |
| Zdroj: | Journal of Sea Research (JSR) Journal of Sea Research (JSR), Elsevier, 1996, 36 (41306), pp.3 |
| ISSN: | 1385-1101 1873-1414 |
| Popis: | International audience; Simultaneous measurements of in situ particle (floc) size were performed with different instruments during several tidal cycles in the Elbe estuary in June 1993. Comparison of the size distributions (by volume) indicates that six instruments produced data that could be compared, while two instruments produced only estimates of mean, minimum and maximum size. The minimum size measured was related to the characteristics of the instrument, the maximum size to the concentration (by number) of the largest flocs, to the volume of the water measured, and to the degree of floc break-up during handling and/or measuring of the sample. The size distributions generally follow a log-probability curve so that the differences in size range measured do not strongly influence the median values. The variability of the results obtained with different instruments shows that measurements can best be made with only one instrument so that a maximum of consistency is obtained. |
| Databáze: | OpenAIRE |
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