| Plattform Platform |
Reise-Nr. Cruise-No. |
Zeitraum Period |
Projekt Project |
Arbeitsgebiet Working area |
|---|---|---|---|---|
| Poseidon | POS469 | 02.05.2014 - 22.05.2014 | ECO2 ROBEX |
Mediterranean Sea |
| Fahrtleiter Chief Scientist | Institut Institute | Auslaufhafen Port of departure | Einlaufhafen Port of return | Stationskarte Station map | Schiffsroute Trackchart |
|---|---|---|---|---|---|
| Linke Peter | Helmholtz Centre for Ocean Research Kiel (GEOMAR) | Bari | Malaga |
Ziel der Reise / Objectives of Cruise:
POSEIDON cruise POS469 to the submarine volcanic gas discharge sites off Panarea (Aeolian Islands, South Italy) was conducted within the framework of the ECO2 project (EU) and the Helmholtz-Alliance "ROBEX – Robotic Exploration of Extreme Environments". The Panarea gas vents represent a unique environment as carbon dioxide (CO2), methane (CH4), hydrogen (H2), nitrogen (N2), helium (He) as well as hydrogen sulfide (H2S) is simultaneously emitted into the water column. This and the different source strengths of gas discharge render the Panarea area an ideal test bed for the study of the dynamics of gas discharge and associated plume formation. The major aim of the cruise was to quantitatively understand the dynamics of plume formation and its effects on the distribution of different gases dissolved in the ambient seawater applying appropriate plume models that enable the determination of the source strength of the respective gas discharge site. Under consideration of bubble rise velocity and bubble size, the models will be parameterized and validated by gas measurements of pCO2, CH4, H2S, N2, oxygen (O2), and argon (Ar) conducted in the surrounding of gas discharge. Gases were simultaneously measured using the prototype of a novel Underwater Membrane Inlet Mass Spectrometer (MIMS). Investigations will be conducted along transects across discharge sites using the ROV PHOCA and a towed video-guided pump CTD. In parallel to these ship based deployments, measurements were conducted by divers at the shallow gas vents off Panarea Island.
Messungen / Measurements
| Institut Institute |
Wissenschaftler Scientist |
Anzahl Number |
Einheit Unit |
Typ der Messungen Type of measurements |
Kommentar Comments |
Daten im DOD Data in DOD |
|---|---|---|---|---|---|---|
| GEOMAH | Linke Peter | 1 | meas. | D71 Current profiler (e.g. ADCP) |
ADCP was deployed during ROV dives. | no |
| GEOMAH | Linke Peter | 7 | Film(s) | G08 Bottom photography |
Images obtained during towed CTD deployments. | no |
| GEOMAH | Linke Peter | 13 | Film(s) | G08 Bottom photography |
images obtained with ROV Phoca . | no |
| GEOMAH | Schneider von Deimling Jens | 1 | survey | G74 Multi-beam echosounding |
seafloor bathymetrical mapping during entire cruise (night). | no |
| GEOMAH | Schneider von Deimling Jens | 1 | meas. | G90 Other geological or geophysical measurements |
dye experiments with fluorescein during ROV dives. | no |
| GEOMAH | Schneider von Deimling Jens | 1 | meas. | G90 Other geological or geophysical measurements |
gas flux measurements close to the seafloor conducted during ROV dives. | no |
| GEOMAH | Schmidt Mark | 3 | stations | H10 CTD-Stations |
gas measurements, CH4, H2S, CO2, O2. | no |
| GEOMAH | Schmidt Mark | 2 | diving(s) | H33 Other dissolved gases |
discrete water samples obtained during dives at shallow vent systems. | no |
| GEOMAH | Schmidt Mark | 5 | meas. | H33 Other dissolved gases |
discrete water samples obtained during ROV dives. | no |
| GEOMAH | Schmidt Mark | 7 | survey | H33 Other dissolved gases |
diss. gas measurements with towed pump CTD,CH4, H2S, CO2, O2, TA. | no |
| GEOMAH | Sommer Stefan | 7 | survey | H33 Other dissolved gases |
Membrane inlet mass spectrometry during deployments with the towed pump CTDs, CO2 measurements. | no |