Cruise inventory

RRS Charles Darwin CD110A

Cruise summary report

Cruise Info. 
Ship name (ship code)RRS Charles Darwin (74AB)
Cruise identifierCD110A
Cruise period1997-12-23 — 1998-01-05
StatusCompleted
Port of departureLisbon, Portugal
Port of returnVigo, Spain
PurposeResearch
ObjectivesThe cruise was one of several at approximately 6 monthly intervals for OMEX, focusing on the NW Iberian Shelf and Slope. Aims are to construct and understand the cycles of carbon and associated elements. This involves the transfer of organic carbon, nutrients and other trace elements which may be rapidly deposited to the sediments and buried, and physical processes affecting lateral and vertical transport.


Leg A was primarily concerned with systematic mapping of water properties over the area 41.5 to 43° N, mooring recovery and deployment and obtaining core and grab samples of the sea bed to derive sediment records and distributions.
Chief scientistJohn Huthnance (Proudman Oceanographic Laboratory)
ProjectOcean Margin Exchange (OMEX)
Coordinating bodyUniversite Libre de Bruxelles (for EU-MAST)
Cruise reportRRS Charles Darwin CD110A cruise report cd110a.pdf — access key 'C' (0.46 MB) 
Ocean/sea areas 
GeneralNorth East Atlantic Ocean (limit 40W)
SpecificContinental shelf and slope off NW Portugal and Spain
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Quantity: activity duration in days = 12
Description: underway thermosalinograph, PAR, transmittance, fluorescence
BathythermographQuantity: number of stations = 57
Description: XBT stations: profiles of T
CTD stationsQuantity: number of stations = 39
Description: CTD stations, almost all with one water bottle sample for salinity calibration (only); profiles of T, S, transmittance (x 2), optical backscatter, fluorescence, dissolved oxygen, downwelling radiance
Transparency (eg transmissometer)Quantity: activity duration in days = 12
Description: underway thermosalinograph, PAR, transmittance, fluorescence
Transparency (eg transmissometer)Quantity: number of stations = 39
Description: CTD stations, almost all with one water bottle sample for salinity calibration (only); profiles of T, S, transmittance (x 2), optical backscatter, fluorescence, dissolved oxygen, downwelling radiance
Optics (eg underwater light levels)Quantity: number of stations = 39
Description: CTD stations, almost all with one water bottle sample for salinity calibration (only); profiles of T, S, transmittance (x 2), optical backscatter, fluorescence, dissolved oxygen, downwelling radiance
Current profiler (eg ADCP)Quantity: activity duration in days = 13
Description: Ship-borne ADCP - current profiles at 10 min, 4 metres
Chemical oceanography 
OxygenQuantity: number of stations = 39
Description: CTD stations, almost all with one water bottle sample for salinity calibration (only); profiles of T, S, transmittance (x 2), optical backscatter, fluorescence, dissolved oxygen, downwelling radiance
Biology and fisheries 
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: activity duration in days = 12
Description: underway thermosalinograph, PAR, transmittance, fluorescence
Phytoplankton pigs (eg chlorophyll, fluorescence)Quantity: number of stations = 39
Description: CTD stations, almost all with one water bottle sample for salinity calibration (only); profiles of T, S, transmittance (x 2), optical backscatter, fluorescence, dissolved oxygen, downwelling radiance
PhytoplanktonQuantity: number of stations = 22
Description: Plankton net hauls, 100m to surface, 40um for phytoplankton
Meteorology 
Incident radiationQuantity: activity duration in days = 12
Description: underway thermosalinograph, PAR, transmittance, fluorescence
Geology and geophysics 
GrabQuantity: number of samples = 46
Description: Grab samples, Shipek grab
Core - soft bottomQuantity: number of cores = 1
Description: Kasten corer (3 others short, disturbed samples)
Core - soft bottomQuantity: number of deployments = 4
Description: Multicorer - 3 or 4 cores retained for each drop
Bottom photographyQuantity: number of deployments = 3
Description: Bed-hop camera - sequence of 19-25 bottom photos
Moorings, landers, buoys 
Physical oceanography 
Current meters42° 39' 59" N  9° 33' 59" W — Current meter mooring (deployed June 1997 on CD105) - acoustic release found but mooring did not rise from bottom - not recovered
Current profiler (eg ADCP)42° 40' 59" N  9° 30' 0" W — Sediment transport and boundary layer equipment (STABLE): lander for near-bed currents, turbulence, suspended sediment profiles
Current profiler (eg ADCP)42° 40' 59" N  9° 28' 59" W — Bottom mounted ADCP (deployed June 1997 on CD105) - not found
Geology and geophysics 
In-situ seafloor measurement/sampling42° 40' 59" N  9° 30' 0" W — Sediment transport and boundary layer equipment (STABLE): lander for near-bed currents, turbulence, suspended sediment profiles
Data held at BODC 
Series/Profiles 
2  Bottom Lander (miscellaneous instruments)
Platform or instrument orientation
Sea level
Horizontal velocity of the water column (currents)
Concentration of suspended particulate material in the water column
Temperature of the water column
Date and time
Platform or instrument orientation
Sea level
Horizontal velocity of the water column (currents)
Concentration of suspended particulate material in the water column
Temperature of the water column
Date and time

BODC idDate/TimeLocationDoc.
5176011997-12-28 00:00  — 1998-01-13 23:00 42° 40' 40" N  9° 30' 31" W  View metadata report for BODC series reference number 517601
5175821997-12-27 11:18  — 1998-01-14 13:03 42° 40' 40" N  9° 30' 31" W  View metadata report for BODC series reference number 517582
39  CTD/STD cast
Raw suspended particulate material concentration sensor output
Density of the water column
Visible waveband radiance and irradiance measurements in the water column
Transmittance and attenuance of the water column
Chlorophyll pigment concentrations in water bodies
Raw fluorometer output
Vertical spatial coordinates
Salinity of the water column
Temperature of the water column
Raw light meter output
Raw suspended particulate material concentration sensor output
Density of the water column
Visible waveband radiance and irradiance measurements in the water column
Transmittance and attenuance of the water column
Chlorophyll pigment concentrations in water bodies
Raw fluorometer output
Vertical spatial coordinates
Salinity of the water column
Temperature of the water column
Raw light meter output

BODC idDate/TimeLocationDoc.
8666951998-01-03 21:15 42° 0' 1" N  9° 40' 54" W  View metadata report for BODC series reference number 866695
8667021997-12-24 17:29 41° 20' 6" N  9° 13' 40" W  View metadata report for BODC series reference number 866702
8667141997-12-25 21:46 43° 0' 38" N  9° 24' 23" W  View metadata report for BODC series reference number 866714
8667261997-12-27 20:30 42° 8' 59" N  9° 18' 45" W  View metadata report for BODC series reference number 866726
8667381997-12-28 06:19 42° 9' 9" N  9° 25' 56" W  View metadata report for BODC series reference number 866738
8667511997-12-29 01:03 42° 0' 8" N  9° 26' 43" W  View metadata report for BODC series reference number 866751
8667631997-12-29 09:11 41° 47' 51" N  9° 1' 9" W  View metadata report for BODC series reference number 866763
8667751997-12-30 02:34 41° 48' 8" N  9° 25' 49" W  View metadata report for BODC series reference number 866775
8667871998-01-01 06:07 42° 49' 55" N  9° 23' 44" W  View metadata report for BODC series reference number 866787
8667991998-01-01 09:41 42° 50' 6" N  9° 37' 52" W  View metadata report for BODC series reference number 866799
8668061997-12-30 20:35 42° 40' 13" N  9° 12' 33" W  View metadata report for BODC series reference number 866806
8668181998-01-01 11:33 42° 50' 14" N  9° 43' 39" W  View metadata report for BODC series reference number 866818
8668311997-12-25 14:58 43° 0' 37" N  9° 42' 47" W  View metadata report for BODC series reference number 866831
8668431997-12-28 01:28 42° 9' 2" N  8° 57' 26" W  View metadata report for BODC series reference number 866843
8668551997-12-29 04:40 42° 0' 7" N  9° 16' 45" W  View metadata report for BODC series reference number 866855
8668671997-12-30 16:06 42° 20' 6" N  8° 59' 52" W  View metadata report for BODC series reference number 866867
8668791998-01-03 18:51 42° 0' 8" N  9° 33' 10" W  View metadata report for BODC series reference number 866879
8668801997-12-24 04:55 41° 20' 31" N  9° 0' 4" W  View metadata report for BODC series reference number 866880
8668921997-12-24 13:49 41° 20' 23" N  9° 8' 57" W  View metadata report for BODC series reference number 866892
8669111997-12-25 17:00 43° 0' 21" N  9° 38' 48" W  View metadata report for BODC series reference number 866911
8669231997-12-25 18:59 43° 0' 15" N  9° 30' 55" W  View metadata report for BODC series reference number 866923
8669351997-12-26 17:33 42° 39' 55" N  9° 12' 49" W  View metadata report for BODC series reference number 866935
8669471997-12-27 07:32 42° 20' 25" N  9° 16' 37" W  View metadata report for BODC series reference number 866947
8669591997-12-27 12:05 42° 40' 34" N  9° 29' 36" W  View metadata report for BODC series reference number 866959
8669601997-12-28 02:26 42° 9' 7" N  9° 2' 57" W  View metadata report for BODC series reference number 866960
8669721997-12-28 03:42 42° 9' 7" N  9° 8' 24" W  View metadata report for BODC series reference number 866972
8669841997-12-28 20:52 41° 59' 40" N  9° 40' 20" W  View metadata report for BODC series reference number 866984
8669961997-12-28 23:02 42° 0' 1" N  9° 33' 6" W  View metadata report for BODC series reference number 866996
8670111997-12-29 02:33 42° 0' 6" N  9° 22' 57" W  View metadata report for BODC series reference number 867011
8670231997-12-29 05:25 42° 0' 15" N  9° 13' 45" W  View metadata report for BODC series reference number 867023
8670351997-12-29 07:41 42° 0' 0" N  9° 0' 6" W  View metadata report for BODC series reference number 867035
8670471997-12-29 10:23 41° 47' 58" N  9° 5' 59" W  View metadata report for BODC series reference number 867047
8670591997-12-29 13:53 41° 48' 6" N  9° 8' 56" W  View metadata report for BODC series reference number 867059
8670601997-12-30 04:03 41° 47' 54" N  9° 21' 56" W  View metadata report for BODC series reference number 867060
8670721997-12-30 18:15 42° 29' 49" N  9° 10' 57" W  View metadata report for BODC series reference number 867072
8670841998-01-01 05:12 42° 49' 49" N  9° 19' 12" W  View metadata report for BODC series reference number 867084
8670961998-01-01 07:18 42° 49' 52" N  9° 29' 49" W  View metadata report for BODC series reference number 867096
8671031998-01-01 08:46 42° 50' 12" N  9° 35' 59" W  View metadata report for BODC series reference number 867103
8671151998-01-03 16:28 42° 0' 11" N  9° 26' 39" W  View metadata report for BODC series reference number 867115
Discrete samples 
30  CTD frame plus rosette samplerRaw suspended particulate material concentration sensor output
Density of the water column
Visible waveband radiance and irradiance measurements in the water column
Transmittance and attenuance of the water column
Chlorophyll pigment concentrations in water bodies
Raw fluorometer output
Salinity of the water column
Temperature of the water column
Raw light meter output
60  Expendable BathythermographTemperature of the water column
1  Kasten corerCarbon concentrations in sediment
Sediment grain size parameters
3  MulticorerGeological sample radioactivity
Carbon concentrations in sediment
Inorganic chemical composition of sediment or rocks
Sediment grain size parameters
Nitrogen concentrations in sediment
Mineralogical composition
Amino acids in sediment
16  Sample taken from ship's non-toxic supplySalinity of the water column
1  Shipek grabCarbon concentrations in sediment
Sediment grain size parameters