Expeditions and Field Work
In our investigations of nutrient fluxes and transformations within the GB2 project, it is pivotal to work on fresh, undisturbed samples to achieve an ideal inference of the natural conditions from our data. We are glad to have the privilege to participate in a number of seagoing expeditions. On board we take samples, conduct measurements of sensitive parameters such as oxygen and nutrient concentrations, and perform labeling experiments with radioactive and stable isotopes.
Inter alia, samples will be obtained from expeditions to oxygen minimum zones off southwest and northwest Africa and the Makran Margin. These areas cover a large range in bottom water oxygen concentrations, POM abundance and sedimentary reactive iron content. To date, we have participated in the following research cruises:
|April 2010||POS 398, Continental Margin off NW Africa. Sarah Sokoll, Tobias Goldhammer|
|February 2011||M84-1 DARCSEAS, Mediterranean, Marmara and Black Sea. Matthias Zabel, Tobias Goldhammer|
|April 2011||MSM17-4, Continental Margin off NW Africa. Sarah Sokoll, Moritz Holtappelts, Gaute Lavik|
|October 2011||MSM19-1c, Continental Margin off Namibia. Sarah Sokoll, Moritz Holtappelts, Matthias Zabel|
Surface sediments are sampled using a multi corer. (V. Diekamp/MARUM)