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Grain size analysis of sediments from the northern Andaman Sea: Comparison of laser diffraction and sieve-pipette techniques

DRS at CSIR-National Institute of Oceanography

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Title Grain size analysis of sediments from the northern Andaman Sea: Comparison of laser diffraction and sieve-pipette techniques
 
Creator Ramaswamy, V.
Rao, P.S.
 
Subject sediments
geochemistry
grain size
light diffraction
calibration
comparative studies
continental shelves
 
Description A comparison has been made of sand, silt, and clay percentage of 118 samples from the Ayeyarwady continental shelf, northern Andaman Sea, measured by the sieve-laser diffraction technique and by classical sieve-pipette methods. Clay and silt percentages determined by Malvern Mastersizer 2000 Laser Particle Size Analyzer are 37% and 157% of pipette clay and pipette silt percentages, respectively. Clay particles separated by the settling technique and having an apparent size of less than 2 mu m when measured with laser diffraction show that 99% of the particles have an upper size range between 4.8 and 7.7 mu m. A calibration relationship between pipette and laser diffraction techniques has been developed for the northern Andaman Sea. A clay particle size of 2 mu m defined by the pipette technique corresponds best to a size of 6.2 mu m defined by laser diffraction. For the laser data, when 6.2 mu m is taken as the boundary between silt and clay, the results are comparable to pipette analysis. Use of the calibration relationship enables one to make use of the rapid laser diffraction size analysis technique for routine sediment texture analysis with high precision.
 
Date 2008-02-12T04:38:06Z
2008-02-12T04:38:06Z
2006
 
Type Journal Article
 
Identifier Journal of coastal research, Vol.22; 1000-1009p.
http://drs.nio.org/drs/handle/2264/842
 
Language en
 
Rights Copyright [2006]. It is tried to respect the rights of the copyright holders to the best of the knowledge. If it is brought to our notice by copyright holder that the rights are voilated then the item would be withdrawn.
 
Publisher Coastal Education and Reserch Foundation