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
23.3.2024