Add-on of light penetration measurements to selected NRWQN rivers

The National Rivers Water Quality Network (NRWQN) includes routine measurement of three optical variables: visual clarity, turbidity, and coloured dissolved organic matter (CDOM; indexed by the filtrate absorption coefficients at 440 and 340 nm). The purpose of this add-on to the NRWQN was to see if it was possible to develop a simple Multiple linear regression (MLR) model of light penetration into river waters as a function of the routine optical measures so as to predict lighting at the river bottom. The dataset was further extended by measurements on five rivers on the west coast South Island , three large glacial-flour laden alpine rivers, and two small wetland-fed lowland rivers with very high CDOM. The dataset was published as Davies-Colley & Nagels (2008). [Davies-Colley, R.J.; Nagels, J.W.(2008). Predicting light penetration into river waters. Journal of Geophysical Research Vol. 113, G03028, doi:10.1029/2008JG000722.]
 
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Date ( Creation )
2015-05-28T21:21:00
Date ( Revision )
2015-05-28T21:21:00
Purpose
To develop a simple model of light penetration as a function of routinely-measured optical variables in rivers 
Credit
Rob Davies-Colley, John Nagels 
Status
Completed  

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Spatial representation type
Vector  
Topic category
  • Inland waters
Description
New Zealand Regions 
N
S
E
W


TimePeriod
2004-01-01T00:00:002006-12-31T00:00:00 
  • Light penetration, rivers, light attenuation, visual clarity, turbidity
NIWA Project Codes
  • NDBA035NDBA055
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NO constraints 
Classification
Unclassified  
Language
English  
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Metadata identifier
1666afb0-3cdb-4ea0-681d-87818bac3a27

Language
English  
Character encoding
UTF8  

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Resource scope
Dataset  
Date info ( Creation )
2015-06-18T10:41:56
Title
ISO 19115-3 
 
 

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