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RRS Discovery D206
Cruise summary report
Cruise Info. | |
Ship name (ship code) | RRS Discovery (74E3) |
Cruise identifier | D206 |
Cruise period | 1993-12-08 — 1994-01-20 |
Status | Completed |
Port of departure | Cadiz, Spain |
Port of return | Gibraltar, Gibraltar |
Purpose | Research |
Objectives | Investigating fluid flow regime of western Mediterranean ridge and mapping seabed features of Mediterranean ridge. (EC-Ref# 931208.012) |
Chief scientist | Graham K Westbrook (University of Birmingham School of Earth Sciences) |
Project | MEDRIFF/MAST II-0037 |
Coordinating body | School of Earth Sciences, University Birmingham (on behalf of CEC DG XII) |
Ocean/sea areas | |
General | Ionian Sea (Mediterranean Sea) Mediterranean Sea - Eastern basin |
Specific | Ionian Sea, Sea of Crete |
Track charts | |
Measurements | |
Geology and geophysics | |
Core - soft bottom | Quantity: number of cores = 18 Description: Piston cores (6 or 9m) |
In-situ seafloor measurement/sampling | Quantity: number of deployments = 20 Description: Heat flow measurements (9 or 6m probe),thermal gradient & cond. |
Single-beam echosounding | Quantity: activity duration in days = 30 Description: 3.5kHz echo-sounder: bathymetry/near surf. sedimentation structures |
Single-beam echosounding | Quantity: activity duration in days = 30 Description: Simrad EA500 echo-sounder bathymetry |
Long/short range side scan sonar | Quantity: activity duration in days = 11 Description: Towed Ocean Bottom Instrument (TOBI): 30 kHz sidescan sonar and |
Other geological/geophysical measurements | Quantity: activity duration in days = 11 Description: TOBI: 7 kHz acoustic sub-bottom profiler (~600 nautical miles) |
Other geological/geophysical measurements | Description: S/chlor. of pore water samples,permeability meas. - planned post cruise analysis |
Other geological/geophysical measurements | Description: Piston core geological description, P-wave velocity analysis |
Other geological/geophysical measurements | Quantity: number of deployments = 8 Description: Deployments of PUPPI1 and 6 were not successful |
Moorings, landers, buoys | |
Geology and geophysics | |
In-situ seafloor measurement/sampling | 34° 52' 0" N 20° 51' 0" E — PUPPI2: pop up pore pressure instrument. Depl. 1993 day 355; Rec. 1993 day 358 |
In-situ seafloor measurement/sampling | 34° 52' 59" N 20° 48' 0" E — PUPPI3: Depl. 1993 day 358, rec. 1993 day 364 |
In-situ seafloor measurement/sampling | 35° 13' 0" N 21° 31' 59" E — PUPPI8: Depl. 1994 day 011, rec. 1994 day 014 |
In-situ seafloor measurement/sampling | 35° 13' 59" N 21° 28' 0" E — PUPPI5: Depl. 1994 day 003, rec. 1994 day 007 |
In-situ seafloor measurement/sampling | 35° 16' 59" N 21° 28' 0" E — PUPPI7: Depl. 1994 day 007, rec. 1994 day 011 |
In-situ seafloor measurement/sampling | 34° 52' 59" N 20° 46' 59" E — PUPPI4: Depl. 1993 day 364, rec. 1994 day 003 |