Publikationsdatum:
2022-05-25
Beschreibung:
This technical report presents the results of analyses on opal, organic carbon,
nitrogen and phosphorus content in each of 156 specimen samples collected from
the moored sediment trap experiment that was a part of JGOFS North Atlantic
Bloom Experiment. The analyzed samples represent a spatio-temporal matrix
formed by 6 time-series sediment traps that provided 26 periods of uniform and
synchronized periods of 14 days, except for one longer and one shorter period. Traps
were deployed at 3 depths, 1 km, 2 km and 0.7 km above the bottom, and at 2
stations, 34°N 21°W and 48°N 21°W from April 4, 1989 to April 17, 1990, as shown in
Tables 1 and 2. There was an 20-day hiatus in September /October 1989 for
changeover of the trap moorings. Some samples were unusable because of the
in trusion of fish.
Samples were separated into several aliquots by wet-splitting, then water
sieved into larger-than- and smaller-than-1-mm sizes. The fluxes of biogeochemical
elements and constituents were determined on these aliquots and size fractions for:
carbonate by vacuum gasometric method; opal by selective leaching method;
reactive phosphorus by high temperature oxidation hydrolysis method; and organic
carbon and nitrogen by applying an elementary analyzer. The annual fluxes, fluxes
during the bloom, pre- and post-bloom episodes were normalized to a 365-day
calendar year (Table 6) and are summarized in Tables 7 to 12. Variabilty of particle
fluxes by each period at the two stations in terms of size fractions, sedimentary
constituents and elements are shown in Tables 13 and 14. The molar ratios between
pairs of critical biogeochemical elements during each episode and annually, shown
at various depths and stations, are included in Tables 10 through 14.
Beschreibung:
Funding was provided by the National Science Foundation through
Grant No. OCE 88-14228.
Schlagwort(e):
Particle flux
;
Bloom
;
North Atlantic Ocean
;
Terminal ratio
;
Ocean interior
;
Atlantis II (Ship : 1963-) Cruise AII119-2
;
Endeavor (Ship: 1976-) Cruise EN203
;
Charles Darwin (Ship) Cruise CD5B
Repository-Name:
Woods Hole Open Access Server
Materialart:
Technical Report
Format:
6589166 bytes
Format:
application/pdf
Permalink
