IDENTIFYING RESUSPENDED PARTICLES USING ISOTOPE RATIOS

被引:24
作者
CORNETT, RJ [1 ]
CHANT, LA [1 ]
RISTO, BA [1 ]
BONVIN, E [1 ]
机构
[1] AECL RES,CHALK RIVER LABS,NEUTRON & SOLID STATE PHYSBRANCH,CHALK RIVER K04 1J0,ON,CANADA
关键词
D O I
10.1007/BF00005732
中图分类号
Q17 [水生生物学];
学科分类号
071004 ;
摘要
Three simple methods were developed to estimate the proportion of particles in lake water derived from resuspended material. These techniques use the different distributions of long and short-lived radioisotopes sorbed onto particles and were tested in the three basins of Lake Erie using Be-7, Cs-137 and Po-210/Pb-210. While the concentration of Po-210 on particles did not vary significantly in the lake, resuspended particles were characterized by high concentrations of Cs-137 and low concentrations of Be-7. The distribution of these radioisotopes is consistent with a simple mixing model in which the fraction of particles in the lake water derived from resuspension ranged from less-than-or-equal-to 8% to about 100%. Higher concentrations of resuspended particles were found in deeper samples from the nepheloid layer and in the shallow western basin where thermal stratification was very weak.
引用
收藏
页码:69 / 77
页数:9
相关论文
共 15 条
  • [2] A REVIEW OF METHODS USED TO MEASURE SEDIMENT RESUSPENSION
    BLOESCH, J
    [J]. HYDROBIOLOGIA, 1994, 284 (01) : 13 - 18
  • [3] PROCESSES WITHIN LAKE ERIE
    BURNS, NM
    JAQUET, JM
    KEMP, ALW
    LAM, DCL
    LEACH, JH
    MUNAWAR, M
    SIMONS, TJ
    SLY, PG
    THOMAS, RL
    WATSON, NHF
    WILLIAMS, JDH
    [J]. JOURNAL OF THE FISHERIES RESEARCH BOARD OF CANADA, 1976, 33 (03): : 639 - 643
  • [4] CORNETT R. J., 1984, WATER POLLUT RES J C, V19, P97
  • [5] CORNETT RJ, 1992, DEV HYDROBIOL, V75, P533
  • [6] RETENTION AND RESUSPENSION OF PHOSPHORUS, NITROGEN, AND IRON IN A CENTRAL ONTARIO LAKE
    DILLON, PJ
    EVANS, RD
    MOLOT, LA
    [J]. CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES, 1990, 47 (07) : 1269 - 1274
  • [7] RESIDENCE TIMES OF TH-234 AND BE-7 IN LAKE GENEVA
    DOMINIK, J
    SCHULER, C
    SANTSCHI, PH
    [J]. EARTH AND PLANETARY SCIENCE LETTERS, 1989, 93 (3-4) : 345 - 358
  • [8] EMPIRICAL-EVIDENCE OF THE IMPORTANCE OF SEDIMENT RESUSPENSION IN LAKES
    EVANS, RD
    [J]. HYDROBIOLOGIA, 1994, 284 (01) : 5 - 12
  • [9] THE PARTITIONING OF BERYLLIUM-7 IN FRESH-WATER
    HAWLEY, N
    ROBBINS, JA
    EADIE, BJ
    [J]. GEOCHIMICA ET COSMOCHIMICA ACTA, 1986, 50 (06) : 1127 - 1131
  • [10] SEASONAL CYCLING OF TRACE-ELEMENTS CS-137, BE-7, AND PU-239+240 IN LAKE-MICHIGAN
    ROBBINS, JA
    EADIE, BJ
    [J]. JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS, 1991, 96 (C9) : 17081 - 17104