Deutsches Ozeanographisches
Datenzentrum Inventur der Maria S. Merian-Reise MSM15-4 (DOD-Ref-No.20100201)
Inventory of Maria S. Merian Cruise MSM15-4 (DOD-Ref-No.20100201)

Plattform
Platform
Reise-Nr.
Cruise-No.
Zeitraum
Period
Projekt
Project
Arbeitsgebiet
Working area
Maria S. Merian MSM15-4 07.07.2010 - 17.07.2010   Adriatic Sea Ionian 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 Marsaxlokk La Valetta   

Ziel der Reise / Objectives of Cruise:

After the Eastern Mediterranean Transient (EMT), which occurred in the late 1980s, the abyssal water masses of the eastern Mediterranean were dominated by water masses of Aegean origin. Data from cruises carried out in recent years now indicate that the process of deep water formation has again been reversed, with Adriatic deep water being the main source for the deep water formation. The reversal of deep water production in the Ionian Sea is a long-term process and therefore it needs to be monitored over a period of years. The characteristics which are crucial for the deep water today, how it differs from the deep water before the EMT and in which state of the reversal it resides, these are the questions which have to be investigated continuously during the coming years. The cruises which have been accomplished (such as Poseidon 298, Meteor M71-3, Merian MSM13/2) and the currentone shall fulfill this purpose. Furthermore, observations and model simulations have shown that the Adriatic Deep Water (ADW) reaches the Ionian Basin along different routes with different mixing rates. In the process, the mixing rate could be a determining factor for the characteristics of the Ionian Deep Water and the density resulting from the ADW also determines the importance of Aegean Deep Water on the deep water in the Ionian basin. Therefore, it is crucial to identify the transport routes of the ADW and to quantify ist mixing rates. Additionally, the composition and the activity of microorganisms of different water masses will be analysed, in order to ascertain the origin of the Ionian Deep Water. 3 moorings which were deployed during MERIAN cruise 13/2 in October 2009 will be recovered on the cruise. One mooring is located in the Strait of Otranto for measuring the outflow of Adriatic deep water during winter. Three other moorings are located enter the unique number, name or acronym assigned to the cruise (or cruise leg, if appropriate). 2 slightly south of the Strait. They should cover the possible transport routes of ADW in order to identify the different mixing rates. Additionally, CTD and XBT sections will be carried out in the southern Adriatic Sea and in the northern and central Ionian Basin. Here, stations will be repeated which were already occupied on other cruises for investigating the modification of the water mass characteristics. The microbiological works focus on DNA analyses and on diversity studies. RV MARIA S. MERIAN cruise MSM13/1-2 was carried out by the Institut fur Meereskunde at the ZMAW of the University of Hamburg. Scientists and technicians from the Institut fur Biogeochemie und Meereschemie, ZMAW, University of Hamburg, from the Istituto Nazionale di Oceanografia e di Geofisica Sperimentale, from the Department of Environmental Sciences, University of Venice and of the Department of Food Science and Microbiology, University of Milano also participated in the cruise.

Messungen / Measurements

Institut
Institute
Wissenschaftler
Scientist
Anzahl
Number
Einheit
Unit
Typ der Messungen
Type of measurements
Kommentar
Comments
Daten im DOD
Data in DOD
DISTAM Mapelli Francesca 18 stations B90
Other biological / fishery measurements
Filter samples from CTD bottles for determining DNA from bacteria no
IFMHH Hainbucher Dagmar 10 day(s) D71
Current profiler (e.g. ADCP)
shipborne ADCP,Thermosalinograph yes
IFMHH Hainbucher Dagmar 29 stations H09
Water bottle stations
CTD stations (Pressure,T,S,O2,Fluorescence,Tranmission), Samples for Oxygen and S no
IFMHH Hainbucher Dagmar 30 stations H10
CTD-Stations
CTD stations (Pressure,T,S,O2,Fluorescence,Tranmission), Samples for Oxygen and S yes
IFMHH Hainbucher Dagmar 24 stations H13
Bathythermograph drops
XBT measurements yes
IFMHH Hainbucher Dagmar 29 stations H16
Transparency (e.g. transmissometer)
CTD stations (Pressure,T,S,O2,Fluorescence,Tranmission), Samples for Oxygen and S no
IFMHH Hainbucher Dagmar 10 day(s) H71
Surface measurements underway (T, S)
Thermosalinograph yes
IFMHH Hainbucher Dagmar 1 n miles H80
Other physical measurements
Underway measurements during the whole trip such as coordinates, depth, meteorological parameter and so on yes
IFMHH Hainbucher Dagmar 3 stations H90
Other chemical oceanographic measurements
Moorings yes

Verankerungen / Moorings

Institut
Institute
Wissenschaftler
Scientist
Typ der Messungen
Type of measurements
Kommentar
Comments
geogr.Breite
Latitude
geogr.Länge
Longitude
Daten im DOD
Data in DOD
IFMHH Hainbucher Dagmar D01 Microcats, Aanderraa current meters,T-sensors, ADCP, up to 100m above bottom, 40° 20.0' N 18° 50.0' E -
IFMHH Hainbucher Dagmar D01 Microcats, Aanderraa current meters,T-sensors, up to 100m above bottom, 39° 8.0' N 18° 51.0' E -
IFMHH Hainbucher Dagmar D01 Microcats, Aanderraa current meters,T-sensors, up to 100m above bottom, recovered 39° 10.0' N 19° 36.0' E -
IFMHH Hainbucher Dagmar D71 Microcats, Aanderraa current meters,T-sensors, ADCP, up to 100m above bottom, 40° 20.0' N 18° 50.0' E -
IFMHH Hainbucher Dagmar H72 Microcats, Aanderraa current meters,T-sensors, ADCP, up to 100m above bottom, 40° 20.0' N 18° 50.0' E -
IFMHH Hainbucher Dagmar H72 Microcats, Aanderraa current meters,T-sensors, up to 100m above bottom, 39° 8.0' N 18° 51.0' E -
IFMHH Hainbucher Dagmar H72 Microcats, Aanderraa current meters,T-sensors, up to 100m above bottom, recovered 39° 10.0' N 19° 36.0' E -
23.3.2024