Deutsches Ozeanographisches
Datenzentrum
Inventur der Poseidon-Reise 402 (DOD-Ref-No.20100294)
Inventory of Poseidon Cruise 402 (DOD-Ref-No.20100294)
Plattform Platform |
Reise-Nr. Cruise-No. |
Zeitraum Period |
Projekt Project |
Arbeitsgebiet Working area |
---|---|---|---|---|
Poseidon | 402 | 30.07.2010 - 10.08.2010 | NE Atlantic (Limit 40?W) |
Fahrtleiter Chief Scientist | Institut Institute | Auslaufhafen Port of departure | Einlaufhafen Port of return | Stationskarte Station map | Schiffsroute Trackchart |
---|---|---|---|---|---|
Borowski Christian | Max-Planck-Institut, Marine Mikrobiologie, Biogeochemie | Ponta Delgada | Ponta Delgada |
Ziel der Reise / Objectives of Cruise:
Menez Gwen is a ridge-centered seamount with neovolcanic and hydrothermal activity at 37.5AN on the Mid-Atlantic Ridge (MAR). Its summit harbors the Menez Gwen hydrothermal vent field which was discovered 1994 and remains one of the least investigated vent fields on the northern MAR. It was chosen as a key study site for interdisciplinary geological, chemical and biological studies within the Research Area F "Lithoshpere - Biosphere Interactions" of the German MARUM Research Cluster of Excellence. Cruise POS502 focused on two major questions: 1) What is the volcanic activity at Menez Gwen? and 2) Are there more active vent sites than previously described and did the hydrothermal activity on the young volcano in the rift graben change since last explorations in 1997? The bathymetry of the Menez Gwen Seamount was mapped with a cascade of multi-beam echosounder surveys: Initial mapping with a ship-based 50 kHz Multibeam Echosounder provided maps of the entire Menez Gwen seamount. More detailed bathymetric maps were produced by AUV based swath bathymetry mapping surveys of selected areas of interest. The extension of the neutral buoyant hydrothermal plumes was mapped with CTD/MAPR-tow-yo surveys and water samples collected with a CTD/Rosette along and acro?? the ridge axis.
Messungen / Measurements
Institut Institute |
Wissenschaftler Scientist |
Anzahl Number |
Einheit Unit |
Typ der Messungen Type of measurements |
Kommentar Comments |
Daten im DOD Data in DOD |
---|---|---|---|---|---|---|
MPIMHB | Borowski Christian | 5 | profiles | D90 Other physical oceanographic measurements |
CTD/MAPR-Tow-Yos for hydrothermal plume tracking, Eh-measurements, 02.08.-07.08.2010 | no |
MPIMHB | Borowski Christian | 5 | survey | G08 Bottom photography |
ROV dives, seafloor mapping and search for hydrothermal vents | no |
MPIMHB | Borowski Christian | 715 | km | G74 Multi-beam echosounding |
Bathymetry mapping 01.08.-08.08.2010 | no |
MARUM | Meinecke Gerrit | 1 | survey | G74 Multi-beam echosounding |
AUV mission for microbathymetry mapping | no |
MPIMHB | Borowski Christian | 9 | stations | H10 CTD-Stations |
CTD/Rosette casts for hydrothermal plume tracking, 31.07.-07.08.2010 | no |