. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FERTILIZATION IN SURGE CHANNELS 223 1:0 100 £ 60 -. 0 1 2 Still Water Level (ml Figure 2. The relation between still water level and surge channel volume for the four embayments used in this study. These curves were calculated using the topographical maps of Figure I. maximal probability. If the average period between surges is T seconds, the probability that a dye particle is carried out of the channel in one second is thus k = m AV (V0 +AV)T' () where k is again the exchange parameter of Eq. I. Vn, AV, T, and k can be
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. FERTILIZATION IN SURGE CHANNELS 223 1:0 100 £ 60 -. 0 1 2 Still Water Level (ml Figure 2. The relation between still water level and surge channel volume for the four embayments used in this study. These curves were calculated using the topographical maps of Figure I. maximal probability. If the average period between surges is T seconds, the probability that a dye particle is carried out of the channel in one second is thus k = m AV (V0 +AV)T' () where k is again the exchange parameter of Eq. I. Vn, AV, T, and k can be determined experimentally, allowing us to calculate the mixing parameter m: m = k(V0 +AV)T AV () Abundance of surge channels The abundance of surge channels on a shore is strongly dependent on the local topography, and therefore may vary greatly from site to site. Due to the fractal nature of shorelines ( Mandelbrot, 1982; Denny, in press), it is dif- ficult to quantify precisely the abundance of surge chan- nels for even a single site, because the exact location of the shoreline varies with the scale at which the shore is examined. An estimate of the abundance of surge channels on the shores at Hopkins Marine Station was made, how- ever, using the following technique (Fig. 3 ). An aerial photograph of the shore was traced onto paper to provide a two-dimensional representation of the shore- line with accurate detail present at a scale smaller than that used in the analysis. A point was chosen at random on this trace, and a caliper placed with one tip at this point. The caliper was then "walked" down the trace, and the distance between the tips of the caliper set the scale at which the shoreline was measured. The series of con- tiguous lines joining points where the caliper intersected the trace denned one realization of the "average" shoreline at that particular scale (Fig. 3). Segments of the actual shore that lie shoreward of this average were denned
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
