Comment on "Mean First Passage Time for Anomalous Diffusion"

We correct a previously erroneous calculation [Phys. Rev. E 62, 6065 (2000)] of the mean first passage time of a subdiffusive process to reach either end of a finite interval in one dimension. The mean first passage time is in fact infinite.Comment: To appear in Phys. Rev.

Small-Scale Variations in Precipitation Loading Near Dorset, Ontario

Abstract A five station network of on-lake precipitation collectors was established in 1976 on Red Chalk Lake, a small Precambrian shield lake near Dorset, Ontario. Collection of bulk precipitation (wet and dry fall) on an event basis was carried out during spring, summer, and fall of 1976 and 1977. Chemical analyses of pH, nutrients, and major ions were performed and loadings calculated. Two-way analysis of variance showed that significant variance in precipitation depth and chemical loading occurred between sample period but not between stations. The same result was obtained when the Red Chalk stations were compared to a similar station located on Harp Lake, 25 km. to the northwest. Comparison of the Red Chalk on-lake stations with 6 additional stations placed in the watershed showed significant variation between the on- and off-lake sets and between the individual off-lake stations themselves.</jats:p