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 | - |