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Short term variability in vertical chlorophyll structure 1
Author(s) -
Denman Kenneth L.
Publication year - 1977
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1977.22.3.0434
Subject(s) - chlorophyll , chlorophyll a , advection , nova scotia , environmental science , bay , series (stratigraphy) , term (time) , geology , atmospheric sciences , oceanography , physics , biology , botany , paleontology , thermodynamics , quantum mechanics
A 26‐h series of vertical profiles of chlorophyll a and temperature, one every 15 min, was obtained during 22–23 April 1974 in 35 m of water in St. Margaret’s Bay, Nova Scotia. From the original profiles, derived contour plots, and spectral analysis of the series, it appears that the temporal changes in the vertical structure resulted mainly from tidal advection. Of the several simple parameters examined, the average chlorophyll and the maximum chlorophyll over the profile were the best indices of changes in the vertical structure. The most commonly used parameter, chlorophyll concentration at a fixed depth, is shown to be readily contaminated by internal waves and therefore makes a poor indicator of changes representative of the whole chlorophyll layer.