| Plattform Platform |
Reise-Nr. Cruise-No. |
Zeitraum Period |
Projekt Project |
Arbeitsgebiet Working area |
|---|---|---|---|---|
| Poseidon | 240 | 19.06.1998 - 10.07.1998 | MAST |
North Atlantic Ocean |
| Fahrtleiter Chief Scientist | Institut Institute | Auslaufhafen Port of departure | Einlaufhafen Port of return | Stationskarte Station map | Schiffsroute Trackchart |
|---|---|---|---|---|---|
| German C.R. | National Oceanography Centre, Southampton | Southampton | Southampton |
Ziel der Reise / Objectives of Cruise:
The cruise was a follow-up to the original "FLAME" and "MARVEL" cruises in 1997 which carried out some preliminary investigations of hydrothermal activity at the "RAINBOW" vent-site, 36?N, Mid-Atlantic Ridge. The objectives of the cruise were three-fold: 1) to recover a series of 11 long-term (up to 12 mth) current meter + trap moorings. 2) to continue a study of the physical and chemical dispersion of the rainbow hydrothermal plume using CTD-nephelometer stations coupled with shipboard and shorebased analyses for TDMn, CH4 + 3HE. 3) to raise sediment cores from different locations benath the plume, as targetted from tobi and bridget data.
Messungen / Measurements
| Institut Institute |
Wissenschaftler Scientist |
Anzahl Number |
Einheit Unit |
Typ der Messungen Type of measurements |
Kommentar Comments |
Daten im DOD Data in DOD |
|---|---|---|---|---|---|---|
| IFREMR | Khripounoff A. | 3 | stations | D01 Current meters |
2 stat.: 2 Sediment Trap mooring + 2 RCMs, 1 stat.: single Sediment Trap mooring + 1 RCM | no |
| NOCS | Richards K.J. | 8 | stations | D01 Current meters |
7 stat.: all moorings had 3 current meters plus an acoustic release 100m off-bottom + buoyancy, 1stat.: with 4 RCMs (not recovered) | no |
| NOCS | German C.R. | 4 | cores | G04 Core-soft bottom (no. of cores) |
Box cores taken for time-series investigation of hydrothermal plume fall - at accumulation of riff-vally floor sediments | no |
| NOCS | Richards K.J. | 36 | casts | H10 CTD-Stations |
Vertical CTD hydrocasts with optical sensors sampling of hydrothermal plumes for salinity, TDMn, CH4 and 3HE | no |
| IFREMR | Khripounoff A. | 3 | stations | H16 Transparency (e.g. transmissometer) |
2 stat.: 2 Sediment Trap mooring + 2 RCMs, 1 stat.: single Sediment Trap mooring + 1 RCM | no |
| NOCS | Richards K.J. | 8 | stations | H16 Transparency (e.g. transmissometer) |
7 stat.: all moorings had 3 current meters plus an acoustic release 100m off-bottom + buoyancy, 1stat.: with 4 RCMs (not recovered) | no |