Deutsches Ozeanographisches
Datenzentrum Inventur der Maria S. Merian-Reise MSM35-Transit (DOD-Ref-No.20140214)
Inventory of Maria S. Merian Cruise MSM35-Transit (DOD-Ref-No.20140214)

Plattform
Platform
Reise-Nr.
Cruise-No.
Zeitraum
Period
Projekt
Project
Arbeitsgebiet
Working area
Maria S. Merian MSM35-Transit 05.02.2014 - 15.02.2014   Mediterranean Sea, Eastern Basin  

Fahrtleiter
Chief Scientist
Institut
Institute
Auslaufhafen
Port of departure
Einlaufhafen
Port of return
Stationskarte
Station map
Schiffsroute
Trackchart
Feseker Tomas Universitat Bremen - Fachbereich 5 - Geowissenschaften Istanbul Malaga   

Ziel der Reise / Objectives of Cruise:

Objectives The objective of cruise MSM-35T was to install an un-cabled seafloor observatory at Athina mud volcano. The observatory will monitor the temporal variability of fluid emissions in order to provide insights into the relationship between seismic activity and fluid emissions, and the role of gas hydrates at this mud volcano. The observatory consists of two independent devices. One device will measure the temperature profile in the upper 5 meters of the sediment column. The other device will measure absolute pressure at the sea floor and the pressure gradient between the seafloor and 3 m below the sea floor. In addition, it will collect pore water samples from 3 m below the sea floor. Both devices were deployed close to the peak of the mud volcano, where previous sediment temperature measurements have indicated high seepage rates. The instruments will be recovered using the ROV Quest 4000 during our next cruise to this area with R/V Meteor in November / December 2014. Narrative R/V Maria S. Merian left the port of Istanbul on Tuesday, 5 February 2014 at around 17:00 LT under good weather conditions. We crossed the Marmara Sea and the Dardanelles without any delay, and headed east towards the working area, approximately 180 km south of Antalya at 1800 m water depth. During the transit, we set up the two instruments on the working deck and prepared the deployments. Immediately after arriving at Athina mud volcano on Friday at 14:00 LT, we started to deploy the temperature lance. The weather conditions were excellent. Everything went as planned until the temperature lance had penetrated the sea floor and the acoustic releaser, which should disconnect the lance from the ship's wire, did not free the instrument. After heaving the lance back to sea surface, it turned out that the lance had remained on connected to the wire even though the releaser had opened. Only when trying to secure the lance using a second rope, the connection suddenly broke and the lance sank uncontrolled through the water column. Using another releaser provided by the ship, the pore pressure lance was installed afterwards without further difficulties. After the two deployments, we mapped the mud volcano using the ship's multibeam system. The scientific program was terminated at 19:00 LT. The following transit from the working area to Malaga was without any special incidents. As scheduled, R/V Maria S. Merian arrived at the port of Malaga on 15 February 2014 at 08:00 LT.

Messungen / Measurements

Institut
Institute
Wissenschaftler
Scientist
Anzahl
Number
Einheit
Unit
Typ der Messungen
Type of measurements
Kommentar
Comments
Daten im DOD
Data in DOD
GEOUNB Feseker Tomas 1 n miles H80
Other physical measurements
Underway measurements during the whole trip such as coordinates, depth, meteorological parameter and so on 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
GEOUNB Feseker Tomas G71 In situ pore pressure and pore water sampling lance 35° 23.5' N 30° 12.9' E no
GEOUNB Feseker Tomas G71 In situ sediment temperature lance 35° 23.6' N 30° 12.9' E no
23.3.2024