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Estimating solute transport in streams from grab samples
Author(s) -
Johnson Arthur H.
Publication year - 1979
Publication title -
water resources research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.863
H-Index - 217
eISSN - 1944-7973
pISSN - 0043-1397
DOI - 10.1029/wr015i005p01224
Subject(s) - streams , flux (metallurgy) , environmental science , sample (material) , hydrology (agriculture) , weighting , flow (mathematics) , soil science , statistics , mathematics , geology , chemistry , geotechnical engineering , computer science , chromatography , physics , computer network , geometry , organic chemistry , acoustics
Several combinations of weighting procedures and schedules of sample collection resulted in substantial differences in calculated P transport by Fall Creek, New York. Calculation of P flux using regressions of concentration on flow are the most satisfactory for grab sample studies where solute concentration is correlated with stream discharge because regressions account for solute export at the highest flows better than other methods. Acceptable estimates of yearly solute flux in a stream can probably be obtained from samples collected weekly and representing all flow stages.