Cruise inventory

RRS Discovery D206

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Discovery (74E3)
Cruise identifierD206
Cruise period1993-12-08 — 1994-01-20
StatusCompleted
Port of departureCadiz, Spain
Port of returnGibraltar, Gibraltar
PurposeResearch
ObjectivesInvestigating fluid flow regime of western Mediterranean ridge and mapping seabed features of Mediterranean ridge. (EC-Ref# 931208.012)
Chief scientistGraham K Westbrook (University of Birmingham School of Earth Sciences)
ProjectMEDRIFF/MAST II-0037
Coordinating bodySchool of Earth Sciences, University Birmingham (on behalf of CEC DG XII)
Ocean/sea areas 
GeneralIonian Sea (Mediterranean Sea)
Mediterranean Sea - Eastern basin
SpecificIonian Sea, Sea of Crete
Track chartsRRS Discovery D206 cruise track — trk3954.html RRS Discovery D206 cruise track — trk3954b.html
Measurements 
Geology and geophysics 
Core - soft bottomQuantity: number of cores = 18
Description: Piston cores (6 or 9m)
In-situ seafloor measurement/samplingQuantity: number of deployments = 20
Description: Heat flow measurements (9 or 6m probe),thermal gradient & cond.
Single-beam echosoundingQuantity: activity duration in days = 30
Description: Simrad EA500 echo-sounder bathymetry
Single-beam echosoundingQuantity: activity duration in days = 30
Description: 3.5kHz echo-sounder: bathymetry/near surf. sedimentation structures
Long/short range side scan sonarQuantity: activity duration in days = 11
Description: Towed Ocean Bottom Instrument (TOBI): 30 kHz sidescan sonar and
Other geological/geophysical measurementsQuantity: activity duration in days = 11
Description: TOBI: 7 kHz acoustic sub-bottom profiler (~600 nautical miles)
Other geological/geophysical measurementsDescription: Piston core geological description, P-wave velocity analysis
Other geological/geophysical measurementsDescription: S/chlor. of pore water samples,permeability meas. - planned post cruise analysis
Other geological/geophysical measurementsQuantity: number of deployments = 8
Description: Deployments of PUPPI1 and 6 were not successful
Moorings, landers, buoys 
Geology and geophysics 
In-situ seafloor measurement/sampling34° 52' 59" N  20° 48' 0" E — PUPPI3: Depl. 1993 day 358, rec. 1993 day 364
In-situ seafloor measurement/sampling34° 52' 59" N  20° 46' 59" E — PUPPI4: Depl. 1993 day 364, rec. 1994 day 003
In-situ seafloor measurement/sampling35° 13' 59" N  21° 28' 0" E — PUPPI5: Depl. 1994 day 003, rec. 1994 day 007
In-situ seafloor measurement/sampling34° 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/sampling35° 13' 0" N  21° 31' 59" E — PUPPI8: Depl. 1994 day 011, rec. 1994 day 014
In-situ seafloor measurement/sampling35° 16' 59" N  21° 28' 0" E — PUPPI7: Depl. 1994 day 007, rec. 1994 day 011