Plattform Platform	Reise-Nr. Cruise-No.	Zeitraum Period	Projekt Project	Arbeitsgebiet Working area
Elisabeth Mann Borgese	06EZ1212	06.07.2012 - 19.07.2012		Baltic Sea

Fahrtleiter Chief Scientist	Institut Institute	Auslaufhafen Port of departure	Einlaufhafen Port of return	Stationskarte Station map	Schiffsroute Trackchart
Burchard Hans	Leibniz-Institut fur Ostseeforschung, Warnemunde	Rostock	Rostock	Karte Map

Ziel der Reise / Objectives of Cruise:

Objective: It was intended to investigate the meso-scale and sub-meso-scale dynamics of the upper layers (upper 80 m) in the central Baltic Sea, using towed instruments and acoustic profilers, to better understand the physical conditions for cyanobacteria blooms. Short narrative: July 6 - July 7: 6:30 h: Leaving Marienehe. R?nne is reached around 17:00 h to to unboard one scientist. Around 18:00 h the vessel leaves R?nne heading for the target area around station TF 271 in the Central Gotland Sea. TF 271 is reached around 16:00 h. Radio contact with the chief scientist of Meteor could be established and he came over to EMB by zodiac to briefly discuss the coordination between the two vessels. Start of the scanfish first matrace is July 7, 19:00 h. July 8: The scanfish transect had to be aborted in the morning, because it got entangled with a sediment trap mooring set out by Meteor. The scanfish and the mooring could be retrieved, but the scanfish cable was damaged in a way that the scanfish could not be further deployed during the entire cruise. The mooring was then redeployed. Afterwards, a towed CTD matrace was carried out. At the end of this second transect however the SW wind had become so strong that the catamaran was endangered. Therefore CTD chain and catamaran were retrieved. July 9: Afterwards, a complete 10 X 10 nm matrace was carried out until July 9 without any towed instruments. The multi net was then deployed. Afterwards, the central transect is profiled northwards. Afterwards the central transect is taken southwards. Finally, a cross pattern is driven around station 271 with 10 nm transect length first from east to west. July 10: Around 2:30 h the cable oft he micro-structure profiler breaks. The profiler is not lost, because the loose end of the cable is twisted into the winch. Afterwards, the southward transect is completed. Due to increasing wind, the CTD chain is not deployed, and instead a CTD grid along the matrace is carried out. July 11: The CTD grid is aborted around 16:00 h on July 11 because of decrease of the wind speed which means favorable conditions for the towed CTD chain. A multi net tow is carried out at the SE corner of the matrace, then the CTD chain is deployed and calibrated by means of 3 CTD profiles. Around 19:00 h a reduced matrace is carried out. July 12: Towed CTD chain observations are finished around 10:00 h at the NW corner of the matrace. The CTD chain is retrieved and the vessel transits to the NE corner. There, a CTD profile is carried out and a horizontal multi net tow is made. Afterwards, EMB transits towards Ventspils where it reaches the approach buoy around 16:0 h. The crew exchange through a pilot boat works very smoothly, and EMB can transit directly back to the NE corner of the matrace. Afterwards a reduced micro-structure matrace is carried out at a speed of 3 knots. July 13: The matrace is continued during the night. In the morning wind is increasing, in the afternoon force 7 is reached. Matrace is completed at 19:00 h. Until 22:15 h, no observations due to bad weather conditions. Afterwards a CTD cast and a horizontal multi net track are carried out against the wind. Around 22:50 h transit to NE corner of target area and start of a matrace without towed instruments. July 14: Afterwards, a towed CTD chain matrace is started from the NW corner of the target area, initiated with 3 CTD casts. It rains and the wind has force 5 from SE. Around the evening of July 14 increasing wind is forecasted. Therefore CTD chain is retrieved around 22:00 h. Matrace is completed without CTD chain. July 15 - July 18: Around 10:00 h of July 15, it is decided to abort the cruise and transit back to Warnemunde, since the weather forecast is not promising. On July 16 arrival in Warnemunde at 21:30 h. The next morning (July 17) IOW dismounts ist gear from EMB. On July 18 around 8:00 h in Kiel dismounting EMB from FWG gear starts and is finished at about 11:

Messungen / Measurements