Deutsches Ozeanographisches
Datenzentrum Inventur der Poseidon-Reise POS414 (DOD-Ref-No.20110177)
Inventory of Poseidon Cruise POS414 (DOD-Ref-No.20110177)

Plattform
Platform
Reise-Nr.
Cruise-No.
Zeitraum
Period
Projekt
Project
Arbeitsgebiet
Working area
Poseidon POS414 31.05.2011 - 13.06.2011   Ionian Sea Mediterranean Sea Adriatic Sea Mediterranean Sea, Eastern Basin  

Fahrtleiter
Chief Scientist
Institut
Institute
Auslaufhafen
Port of departure
Einlaufhafen
Port of return
Stationskarte
Station map
Schiffsroute
Trackchart
Hainbucher Dagmar Institut fur Meereskunde der Universitat Hamburg Genova Messina   

Ziel der Reise / Objectives of Cruise:

Until the eighties the main source of deep water masses in the Ionian Basin was the southern Adriatic Sea. During the nineties a dramatic climatic change took place in the eastern Mediterranean Sea (Eastern Mediterranean Transient); deep water was formed of water originating from the Aegean Sea since then. This change in the deep water had extensive consequences for the whole circulation of the eastern Mediterranean Sea. Expeditions carried out in this region during the last years indicate now that the process of deep water formation might reverse again. The process of this re-reversing deep water formation is a long-term one. Therefore, the characteristics of the today`s deep water masses in the Ionian Basin, to which extent these characteristics differ from the deep water masses before the EMT and in which state the re-reversed Eastern Mediterranean deep water circulation is now, must be investigated continuously. The Adriatic deep water finds its way to the Ionian Basin on several routes with different entrainments rates. The entrainment rates might be a deciding factor for the Deep Ionian Waters and the resulting density might influence the role of the Aegean Deep Water for the Ionian Deep Waters as well. Therefore, it is crucial to identify and quantify the routes and entrainment rates of the Adriatic Deep Water. The cruise carried out is a continuation of the work carried out during the cruises POS298, M71/3, MSM13/2 and MSM15/4. The objective is to investigate the spatial and temporal variability of dispersion and mixing of the Ionian Deep Water. During the cruise CTD stations were carried out and samples for nutrient, oxygen and oxygen isotopes were taken. Continously measurements were made with the ship borne ADCP and thermosalinograph. Additionally, on the cruise students were trained on the use of the oceanographic equipment.

Messungen / Measurements

Institut
Institute
Wissenschaftler
Scientist
Anzahl
Number
Einheit
Unit
Typ der Messungen
Type of measurements
Kommentar
Comments
Daten im DOD
Data in DOD
IFMHH Hainbucher Dagmar 11 day(s) D71
Current profiler (e.g. ADCP)
shipborne ADCP,Thermosalinograph no
IFMHH Hainbucher Dagmar 33 stations H09
Water bottle stations
CTD stations (Pressure,T,S,O2), Samples for Oxygen, Nutrients, Oxygen Isotopes and S no
IFMHH Hainbucher Dagmar 33 stations H10
CTD-Stations
CTD stations (Pressure,T,S,O2), Samples for Oxygen, Nutrients, Oxygen Isotopes and S no
IFMHH Hainbucher Dagmar 33 stations H16
Transparency (e.g. transmissometer)
CTD stations (Pressure,T,S,O2), Samples for Oxygen, Nutrients, Oxygen Isotopes and S no
IFMHH Hainbucher Dagmar 11 day(s) H71
Surface measurements underway (T, S)
shipborne ADCP,Thermosalinograph no
24.8.2019