NORDATLANTIK 1993, [METEOR] Cruise No. 26, 24 August - 26 Neovember 1993

Suess, Erwin, Kremling, Klaus and Mienert, Jürgen, eds . (1994) NORDATLANTIK 1993, [METEOR] Cruise No. 26, 24 August - 26 Neovember 1993 Meteor-Berichte, 94-4 . Leitstelle METEOR, Hamburg, Germany.

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The 26"1 voyage of RV METEOR to the North Atlantic, the Skagerrak, the Norwegian, East
Greenland and Barents Seas consisted of three legs whose research programs served several
. large integrated, and multi-disciplinary projects. During the first leg, M 26/1, the programs
were related to WOCE (World Ocean Circulation Experiment), specifically the North
Atlantic overturning rate determination and to the JGOFS project (Joint Global Ocean Flux
Of seven WOCE moorings three (M2, El and E2) had to be dredged because of release
problems and/or possible loss of buoyancy. Two of them (F2 and W2) released and surfaced
as planned; another two moorings (D2 and AZ) could not be located for different reasons.
Hydrographic parameters for characterization of water masses were also obtained at all sites
as well as at those of the JGOFS moorings (Ll, L2, L3). All three of these were successfully
redeployed during M 26/1 after they had been recovered in early summer of 1993 by the deep
submersibles MIR. Throughout most of M 26/1, a continuous and contamination-free
pumping system was deployed and a composite transect of chemical parameters measured.
Among them are the nutrients, organic acids, biomarkers and trace elements. They are
important basic data for several of the JGOFS subprojects which examine the interaction of
dissolved and particulate trace constituents in relation to seasonal and meridional particle
production and flux.

During the second and third legs, M 26/2 and M 26/3, the research programs served the
Sonderforschungsbereich 313 (Environmental Change in the northern North Atlantic) as well
as those of two European Community projects SEEP (Gas and Water Seepage on the
European Continental Margin) and ENAM (European North Atlantic Margin). Other projects,
addressing the well-known cold water carbonates of the Norwegian Sea (Boreale
Flachwasserkarbonate) and the history of post-glacial rebound of the Scandinavian shield
(Hebungsgeschichte Skandinaviens), were also part ofM 26.
The SFB-work concerned two long-term sediment trap moorings in the Norwegian and
Greenland Basins, the first of them was successfully recovered and redeployed, the second
one failed to surface. Work on the Norwegian, East Greenland, and Barents Sea margins
yielded many miles of shallow subsurface acoustic images, sufficient core material, surface
samples, hydrographic, plankton and benthos samples to serve the needs of five of the eight
SFB-subprojects. The micropaleontological and planktological assemblages of these samples
were further characterized by environmental parameters like nutrients, salinity and
temperature, from throughout the water column. The objectives concerned reconstruction of
Late Pleistocene temperatures, rates and controls of production of benthic and pelagic
biogenic carbonates and formation and imprinting of geophysical signals.


Document Type: Report (Cruise Report)
Keywords: RV Meteor; M26; Cruise report
Research affiliation: OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-CH Chemical Oceanography
OceanRep > GEOMAR > FB2 Marine Biogeochemistry > FB2-MG Marine Geosystems
ISSN: 0936-8957
Date Deposited: 22 Jan 2016 09:03
Last Modified: 31 Aug 2017 09:38

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