For identifying common patterns of
N.G. Prouty et al. / Marine Chemistry 154 (2013) 55–66 57
variability in the multivariate metal records, Empirical Orthogonal
Function (EOF) analysis was used (Preisendorfer, 1988). In a similar
manner to principal component analysis, there is decomposition
of the dataset to a new coordinate system. The advantage of EOF
analysis is that both temporal and spatial patterns can be evaluated
(e.g., Fisher, 2002). Meteorological data (e.g., wind) were obtained
from National Climatic Data Center (NCDC) and total observations per
year were calculated from hourly observations for winds originating
from the southeastern quadrant (80–190°) at 10, 15, and 20 m/s.
Winds from these directions were selected as they would be blowing
over the greatest fetch and thus would be most capable of developing
the largest waves and strongest currents that could, in turn, resuspend
seabed sediment either at the site of the corals or in adjacent shallower
waters and advect it past the corals. Cumulative annual precipitation
was computed from hourly precipitation records from the Bermuda
Weather Service
For identifying common patterns ofN.G. Prouty et al. / Marine Chemistry 154 (2013) 55–66 57variability in the multivariate metal records, Empirical OrthogonalFunction (EOF) analysis was used (Preisendorfer, 1988). In a similarmanner to principal component analysis, there is decompositionof the dataset to a new coordinate system. The advantage of EOFanalysis is that both temporal and spatial patterns can be evaluated(e.g., Fisher, 2002). Meteorological data (e.g., wind) were obtainedfrom National Climatic Data Center (NCDC) and total observations peryear were calculated from hourly observations for winds originatingfrom the southeastern quadrant (80–190°) at 10, 15, and 20 m/s.Winds from these directions were selected as they would be blowingover the greatest fetch and thus would be most capable of developingthe largest waves and strongest currents that could, in turn, resuspendseabed sediment either at the site of the corals or in adjacent shallowerwaters and advect it past the corals. Cumulative annual precipitationwas computed from hourly precipitation records from the BermudaWeather Service
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