Preface The expedition ARK XIX/3 with the German icebreaking RV ...

from the shallow trap in 340 m were obtained. The amount of material collected in the
bottles of the long-term mooring clearly show a seasonal pattern as well as differences
between the two sampling depths (Fig. C1-1). In 260 m somewhat higher fluxes can
be deduced during the period August-October 2002, very low sedimentation
seemingly occurred after this period till March/April 2003 when the amount of material
intercepted by this trap started to increase again showing highest amounts in the
period end of May/June when the sampling ended. In 2310 m much less material than
in the shallow sediment trap was collected and also no increase in summer/autumn is
obvious. Increasing fluxes in this depth occurred in June 2003, ~ 6 weeks after the
increase occurred in the shallow trap at 260 m. In the shallow trap of the mooring
FEVI-4, that sampled with a high time resolution of 4 days from end of April 2003 until
the middle of July 2003 an increase in the collected material is obvious at the
beginning of June, declining afterwards till the last sampling event in the middle of July
when the amount of material in the collection jars started to increase again. From this
visual inspection of the sampling jars only a rough impression can be obtained, more
detailed information will be obtained after detailed chemical, biochemical and
microscopic analysis of the samples later on.
259m
2309m
Aug. 02 Sept. Oct. Nov. Dec Jan 03
259m
2309m
Jan. Feb. Mar. Apr. May June
Fig. C1-1: Bottles filled with sedimented material from the two traps of mooring FEVI-3.
- 231 -