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Fig. 11.3 A sidescan-sonar image of the site 345580 showing 100
100 m of seabed. Green
arrows point to some of the tree trunks covered almost completely with a thin sand layer. White
arrows point to dumped debris
Scientists from the Polish Central Maritime Museum extracted two tree stumps,
and during the German expedition, 17 fragments of trunks were extracted. The
German divers have also taken two short (30-35 cm) sediment cores.
Dendrological analyses were carried out on 17 wood samples. Four samples
of wood were radiocarbon-dated by AMS at the Poznan Radiocarbon Laboratory.
Fifteen samples of gyttja and peat from two cores were palynologically analysed,
and 10 samples from two cores were analysed for diatom assembly composition,
according to standard methods (Faegri and Iversen 1975 , Berglund 1985 , Battarbee
1986 ) .
Sonar records were registered and analysed by Franz Tauber. Underwater work
was carried out by Harald Lübke and a German team of scuba divers. The palynolog-
ical analyses were performed by Grazyna Miotk-Szpiganowicz, the dendrological
analysis by Marek Kr apiec and diatomological analyses by Małgorzata Witak.
 
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