Additions and Corrections 1996, Volume 30, Pages 1527-1532 Jordan F. Clark,* Peter Schlosser, Martin Stute, and H. James Simpson: SF6-3He Tracer Release Experiment: A New Method of Determining Longitudinal Dispersion Coefficients In Large Rivers The standard deviation and calculated dispersion coefficients were uniformly too large because the axial distributions were fit with a function of the form:
( )
f(x) ) a exp -
x2 σ2
(1)
rather than with the appropriate function:
( )
f(x) ) a exp -
x2 2σ2
(2)
The values of the standard deviation, σ, listed in Table 1 and variances, σ2, plotted in Figure 5 should be replaced with the following:
TABLE 1 time after injection (day) σ raw (m) σ corrected (m) r 2 corrected 1.08 2.10 3.08 4.10 5.21 6.29 7.28 8.20 9.23 10.06 11.04 12.04 13.06
1819 2005 2798 4081
2216 ( 72 2781 ( 160 2979 ( 114 4106 ( 168
0.98 0.96 0.98 0.97
4360
4917 ( 338
0.90
7004 10227 8873 8377
7444 ( 749 8686 ( 249 9533 ( 319 9046 ( 545
0.94 0.98 0.97 0.98
FIGURE 5. Throughout the abstract and text, the values of the longitudinal dispersion coefficients should be replaced with 23 ( 3 m2 s-1 and 78 ( 17 m2 s-1, respectively, for the first (days 3-8) and second (days 8-13) periods. ES962016O
308
9
ENVIRONMENTAL SCIENCE & TECHNOLOGY / VOL. 31, NO. 1, 1997
S0013-936X(96)02016-0 CCC: $14.00
1996 American Chemical Society
