. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. 28 been combined into this single map. Figure 9 shows salinity as a function of distance from the lagoon pass. At the time of the survey, salinity increased with distance from the pass from an oceanic value of °/oo to a back-lagoon value of about o/oo. The trend is well approximated (coefficient of determination = 96%) by the following empirical quadratic regression equation: Si (o/oo) = + - (7) S[ is the calculated salinity at any location X km from the pass. Planimetry of the
. Atoll research bulletin. Coral reefs and islands; Marine biology; Marine sciences. 28 been combined into this single map. Figure 9 shows salinity as a function of distance from the lagoon pass. At the time of the survey, salinity increased with distance from the pass from an oceanic value of °/oo to a back-lagoon value of about o/oo. The trend is well approximated (coefficient of determination = 96%) by the following empirical quadratic regression equation: Si (o/oo) = + - (7) S[ is the calculated salinity at any location X km from the pass. Planimetry of the salinity map (Fig. 9) yields a mean lagoon salinity of about Figure 9. Salinity versus distance from pass, including quadratic regression line. Distance From Pass (km) The various values established above may be substituted into Eq. 2 in order to calculate the residence time of lagoon water. The estimated mean residence time is about 50 days; maximum residence time is about 95 days, and there is about a 25-day residence time for each 1 °/oo salinity increase over the oceanic value of o/oo. The above values are locally inapplicable on the intertidal flats along the lagoon rim. There, the salinity may increase by as much as 1 o/oo over a single tide cycle because the water is temporarily held on these flats and heated during daytime falling tides. On subsequent rising tides, this water is flushed off the flats and mixed with the bulk of the lagoon water. The area of these intertidal flats is sufficiently small so that this local effect has been ignored in constructing lagoon-wide Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smithsonian Institution. Press; National Research Council (U. S. ). Pacific Science Board; Smithsonian Institution; National Museum of Natural History (U. S
Size: 1671px × 1496px
Photo credit: © Library Book Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauth, bookauthorsmithsonianinstitutionpress, bookcentury1900
