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(Light fields and optics in coastal waters)
(Manual Sediment Transport Measurements in Rivers, Estuaries and Coastal Seas)
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==Light fields and optics in coastal waters==
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==Manual Sediment Transport Measurements in Rivers, Estuaries and Coastal Seas==
  
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The quantitative study of underwater light fields in coastal waters and shelf seas has important applications in ecology, engineering and [[remote sensing]]. This article introduces the theoretical basis of optical measurements. Attention is paid to descriptors of light fields, optical properties of natural waters and light field modelling. For more information about the measurement of light field, see also the article [[Optical measurements in coastal waters]].
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[[Image:manual.jpg|thumb|right|manual sediment transport measurements]]
  
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'''Relevance'''
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This article introduces the ''Manual Sediment Transport Measurements in Rivers, Estauries and Coastal Seas'' (Van Rijn, 1986<ref>Rijn, L. C. van (1986). ''Manual sediment transport measurements''. Delft, The Netherlands: Delft Hydraulics Laboratory</ref>; 2007<ref>Rijn, L.C. van (2007)''Manual sediment transport measurements in rivers,estuaries and coastal seas'', Aquapublications, The Netherlands. 500 p.</ref>). The article contains links to articles with summaries of the manual and to the pdf-files of the manual. See also the '''[[:Category:Manual sediment transport measurements|alphabetic overview of all articles]]''' with summaries of the manual.
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The quantitative study of underwater light fields in coastal waters and shelf seas has important applications in ecology, engineering and [[remote sensing]]. Underwater light fields:
 
  
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# play an important role in determining rates of photosynthesis by phytoplankton and macrophytes, and therefore set limits on the productivity of marine ecosystems.
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The '''Manual Sediment Transport Measurements in Rivers, Estauries and Coastal Seas'''  is a volume of about 500 pages containing all details of measurement instruments and methods for mud, silt and sand transport in rivers, estuaries and coastal seas. The manual includes: definitions and measuring principles and errors involved, methods to compute sediment transport from measured data, a wide range of instruments from simple mechanical samplers to sophisticated electronic equipment. [[Bed load]] transport as well as [[suspended load]] transport are addressed. Methods and instruments to measure particle size and particle fall velocity are discussed. Laboratory and [[in-situ]] sample analysis are described. Instrumentation for determining the wet bulk density of bed material (important for dredging studies) is presented. [[Remote sensing]] by video camera recording is also discussed. Regular updates of the methods and instrumentation are made.  
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# influence the range at which objects are visible under water, which is of great significance for diving and engineering operations and also for visual interactions between predators and prey species.
 
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# determine the volume reflectance of seawater which is important for [[optical remote sensing]].
 
  
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Underwater light fields are vulnerable to human activities. Anthropogenic disturbances such as eutrophication, dredging operations and accelerated soil erosion due to the de-afforestation of river catchments can modify underwater light climates in coastal regions. Increases in [[turbidity]] produced by these activities can damage important ecosystem components such as coral reefs and sea grass beds.
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The Coastal Wiki comprises a summary of the manual. All summarizing articles contain links to pdf-files of the manual, which are hosted on a website of [http://www.wldelft.nl/rnd/intro/fields/morphology/manual.html#indexmanual WL|Delft Hydraulics]

Revision as of 13:47, 28 July 2008

Manual Sediment Transport Measurements in Rivers, Estuaries and Coastal Seas

manual sediment transport measurements

This article introduces the Manual Sediment Transport Measurements in Rivers, Estauries and Coastal Seas (Van Rijn, 1986[1]; 2007[2]). The article contains links to articles with summaries of the manual and to the pdf-files of the manual. See also the alphabetic overview of all articles with summaries of the manual.

The Manual Sediment Transport Measurements in Rivers, Estauries and Coastal Seas is a volume of about 500 pages containing all details of measurement instruments and methods for mud, silt and sand transport in rivers, estuaries and coastal seas. The manual includes: definitions and measuring principles and errors involved, methods to compute sediment transport from measured data, a wide range of instruments from simple mechanical samplers to sophisticated electronic equipment. Bed load transport as well as suspended load transport are addressed. Methods and instruments to measure particle size and particle fall velocity are discussed. Laboratory and in-situ sample analysis are described. Instrumentation for determining the wet bulk density of bed material (important for dredging studies) is presented. Remote sensing by video camera recording is also discussed. Regular updates of the methods and instrumentation are made.

The Coastal Wiki comprises a summary of the manual. All summarizing articles contain links to pdf-files of the manual, which are hosted on a website of WL|Delft Hydraulics
  1. ↑ Rijn, L. C. van (1986). Manual sediment transport measurements. Delft, The Netherlands: Delft Hydraulics Laboratory
  2. ↑ Rijn, L.C. van (2007)Manual sediment transport measurements in rivers,estuaries and coastal seas, Aquapublications, The Netherlands. 500 p.
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