Plattform Platform	Reise-Nr. Cruise-No.	Zeitraum Period	Projekt Project	Arbeitsgebiet Working area
Meteor	M76-2	17.05.2008 - 04.06.2008	GENUS	SE Atlantic (Limit 20?W)

Fahrtleiter Chief Scientist	Institut Institute	Auslaufhafen Port of departure	Einlaufhafen Port of return	Stationskarte Station map	Schiffsroute Trackchart
Emeis Kay-Christian	Institut fur Biogeochemie und Meereschemie der Universitat Hamburg	Walvis Bay	Walvis Bay

Ziel der Reise / Objectives of Cruise:

The expedition investigated the reasons for and consequences of variable oxygenation of shelf waters offshore Namibia in the Northern Benguela Coastal Upwelling System. These variable oxygen conditions impact on the fluxes of dissolved constitutents from sediments to the water column and are modulated by microbial communities. The main questions to be addressed were: 1) How does the physical circulation system affect oxygen conditions on the shelf? 2) How are nutrient element cycles and ratios between nutrients affected by variable oxygen conditions? 3) Which processes in the cycling of nitrogen are responsible for unusual nutrient ratios in the upwelling waters? 4) What is the magnitude of sediment-water exchange processes under variable oxygen condition? The expedition is one of a series in the framework of the GENUS (Geochemistry and Ecosystem Research in the Namibian Upwelling System) project. The ship left Walvis Bay on May 17, 2008 and collected data from a series of stations aligned in 6 transects perpendicular to the coast (at roughly 23?S, 22?S, 21?S, 20?S, 19?S and 17?30'S). At all stations CTD casts (including water sampling with a rosette sampler) and multicore hauls were done. At 6 stations, we deployed autonomous benthic landers (chamber lander, bottom water profiler, bottom-water sampler) to measure benthic fluxes and an autonomous bottom-mounted ADCP, and we profiled the water column with a pumpcast CTD system and in-situ pumps. In addition, sediments were

Messungen / Measurements

Verankerungen / Moorings