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AIP Conf. Proc. / Volume 971 / Issue 1

A Comparison On Efficiency Of Sampling Techniques For Sediment Estimation In Rivers

AIP Conf. Proc. -- January 30, 2008 -- Volume 971, pp. 270-273
INTERNATIONAL CONFERENCE ON MATHEMATICAL BIOLOGY 2007: ICMB07; doi:10.1063/1.2883859

Issue Date: 30 January 2008

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ABSTRACT

M. Arabkhedri,^a,c F. S. Lai,^a I. Noor Akma,^b and M. K. Mohamad Roslan^a
^aFaculty of Forestry, University Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
^bInstitute for Mathematical Research (INSPEM), University Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia
^cSoil Conservation and Watershed Management Research Institute, P.O. Box: 13445-1136, Tehran, Iran

Inthis study, we compared the efficiency of adaptive cluster samplingagainst SALT (a special kind of probability proportion to size)and simple random sampling for estimating the suspended sediment yieldin Gorgan-Rood River, Iran. About 300 sample sets, grouped indifferent sizes and replicates, were extracted from a five-year dailysuspended sediment records, by three study sampling methods including adaptive,SALT and calendar-based. In the next step, total loads wereestimated by appropriate sampling estimators; then the loads were comparedamong themselves and with observed total load as well. Theresults suggested that all three studied sampling techniques' average estimatesshowed satisfactory accuracy. However, adaptive and SALT were more precisethan simple random sampling. SALT and adaptive cluster sampling obtainedthe optimum accuracy and precision with an average of almostweekly samplings. The result of this study may suggest theapplication of the adaptive cluster sampling in river monitoring programs. ©2008 American Institute of Physics

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