Plattform Platform	Reise-Nr. Cruise-No.	Zeitraum Period	Projekt Project	Arbeitsgebiet Working area
Alkor	290	10.10.2006 - 01.11.2006	COMET	Northern North Sea Western Baltic Sea North Sea

Fahrtleiter Chief Scientist	Institut Institute	Auslaufhafen Port of departure	Einlaufhafen Port of return	Stationskarte Station map	Schiffsroute Trackchart
Pfannkuche Olaf	Leibniz-Institut fur Meereswissenschaften an der Universitat Kiel	Kiel	Kiel	Karte Map

Ziel der Reise / Objectives of Cruise:

The Cruise was part of the investigations of the collaborative project COMET. Objective of this cruise was: how the benthic boundary layer methane turnover is regulated at shallow gassy sediments in comparison to gas hydrate bearing sediments at continental margins. We surveyed the water column and seafloor in the vicinity of active gas flares and pockmarks with hydro-acoustic methods and TV-cameras mounted to a towed frame and a manned submersible.Water samples for physical and chemical water properties as well as for methane were obtained from rosette water sampler profiles. Gas flux from discrete gas flares was quantified with an oblique multi-beam system integrated into a bottom lander. Physical benthic boundary layer processes were monitored with another lander system. Landers were only deployed for the duration of our working activities in the respective areas. Work permissions were granted for the EEZ of UK and Norway. Station work focussed on the Gullfaks and Tommeliten OIL/Gas Field (Norwegian EEZ). In the UK EEZ station works was mainly carrie out at a'former gas blow out near the Fladen Ground which is still active. Aditional investigations were carried out in the Eckernforde Bay (western Baltic, German EEZ) since we had to leave Tommeliten earlier to escape an arriving hurricane.

Messungen / Measurements

Verankerungen / Moorings