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FS Poseidon PO328

Cruise summary report

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Cruise Info. 
Ship name (ship code)FS Poseidon (06PO)
Cruise identifierPO328
Cruise period2005-09-06 — 2005-09-25
StatusCompleted
Port of departureTórshavn, Faroe Islands
Port of returnAberdeen, United Kingdom
PurposeResearch
ObjectivesOverall objectives in the POL science programme to 2007 include estimates of slope mixing and some of its oceanic effects. As part of this, objectives a) on the cruise were to make measurements to enable estimates of internal waves and their induced mixing and bottom boundary layer forms (over the West Shetland slope), and to enable the estimates to be related to context: slope, stratification, mean flow. [In the wider project, further allied objectives are: b) to derive, using 3-D fine-resolution and specialist process models for extrapolation, an estimated effect on the characteristics of water flowing adjacent to slopes with (internal-wave-induced) mixing; c) to estimate, using 3-D fine-resolution models for extrapolation, the role slope mixing and associated processes such as water mass transformation, play in cross-slope exchange of mass, heat, salt and nutrients].
Specific objectives for F.S. Poseidon cruise 328 were to (i) deploy and recover four ADCP moorings, three adjacent temperature-logger moorings and the specialist rigs STABLE, HOMER and NIOZ Lander and fast-sampling thermistor string, altogether in a ~ 7km cross near the 500m depth contour, (ii) carry out CTD (+LADCP) surveys of cross-slope centred on the mooring array and ~70 km to the east and west, (iii) carry out repeat (24-hr) CTD (+LADCP) stations, sequences of CTD (+LADCP) stations following any identified internal wave packets and record ship-borne ADCP, all for internal wave behaviour, (iv) obtain satellite images, underway surface and meteorological measurements as context information.
Chief scientistJohn Huthnance (Proudman Oceanographic Laboratory)
ProjectShelf-sea processes and function; POL Science Plan 2001-07 prog. 2
Coordinating bodyProudman Oceanographic Laboratory
Cruise reportFS Poseidon PO328 cruise report po328.pdf (2.34 MB) 
Ocean/sea areas 
SpecificFaroe-Shetland Channel (West Shetland slope), 3deg - 6deg W, 59.5deg - 61.0deg N.
Track chartsFS Poseidon PO328 cruise track — po328roscop4753trk.html
Measurements 
Physical oceanography 
Surface measurements underway (T,S)Quantity: activity duration in days = 19
Description: Ships continuous surface (2 m depth) recording system: temperature, conductivity, salinity, sigma (density)
CTD stationsQuantity: number of profiles = 105
Description: Seabird SBE 9plus; conductivity (giving salinity), temperature, depth. Casts 13-37, 38-57, 83-99, 100-105 form sections. 24-hour station casts 58-82. Salinity samples taken every 4-hour watch (more often initially) for calibration analysis by UKORS.
Current profiler (eg ADCP)Quantity: number of profiles = 97
Description: 300kHz ADCP lowered with CTD, giving profiles. Cast groupings as above.
Current profiler (eg ADCP)Quantity: activity duration in days = 12
Description: Vessel-mounted 75kHz ADCP. Includes 24-hour station: 0546, 11/9/05 to 0637, 12/9/05; repeat section: 0713 to 2155, 12/9/05. Records (Sept.) 6-13, 15-17, 19-22.
Meteorology 
Routine standard measurementsQuantity: activity duration in days = 19
Description: Ships continuous meteorological recording system: wind speed (S/P), direction (S/P), air temperature, relative humidity, pressure, water temperature
Geology and geophysics 
Single-beam echosoundingQuantity: activity duration in days = 19
Description: Ships continuous echo-sounder recording system: depth; uncalibrated but discriminates between different charts in Faroe-Shetland Channel.
Moorings, landers, buoys 
Physical oceanography 
CTD stations60° 13' 38" N  4° 39' 36" W — SM02Ch = HOMER, 597 m depth; 300kHz bottom-frame ADCP and yo-yo fast-sampling temperature to 150m above; deployed (released from surface) 7 Sept. 2005 at 0920, recovered on board 21 Sept. at 0955. [Data from yo-yo shear sensor lost].
Subsurface temperature measurements60° 12' 54" N  4° 41' 50" W — SM05Wt = microcat (lowest; temperature and conductivity) and 12 mini-loggers (temperature) @ 4m intervals on line, 601 m depth; deployed (released from surface) 7 Sept. 2005 at 1500, recovered on board 21 Sept. at 0841.
Subsurface temperature measurements60° 12' 47" N  4° 38' 26" W — SM10St = 12 mini-loggers (temperature) @ 4m intervals on line, 556 m depth; deployed (released from surface) 8 Sept. 2005 at 1034, recovered on board 21 Sept. at 1256.
Subsurface temperature measurements60° 14' 24" N  4° 37' 27" W — SM08Et = microcat (lowest; temperature and conductivity) and 12 mini-loggers (temperature) @ 4m intervals on line, 597 m depth; deployed (released from surface) 8 Sept. 2005 at 0827, recovered on board 21 Sept. at 0701.
Subsurface temperature measurements60° 13' 31" N  4° 40' 3" W — SM03Cn = NIOZ lander, 598 m depth; 300kHz bottom-frame ADCP, 2 MHz Nortek AquaDopp current meter, both ~1.75 mab, 112 thermistors every 0.5 m sampling each 2 s, 2 MHz Nortek AquaDopp current meter ~ 88 mab; deployed (released from surface) 7 Sept. 2005 at 1159, recovered on board 21 Sept. at 1128 (thermistors), 1140 (lander). Short, uncalibrated thermistor records, 9 failed.
Current meters60° 13' 46" N  4° 39' 9" W — SM01Cs = STABLE, 593 m depth; pair EMCMs and temperature at 0.3 and at 0.6 m ab, 3-frequency Acoustic back-scatter at 1.22 mab, rotors at 0.33, 0.51, 0.69, 0.87 m ab and vane above; deployed (released from surface) 7 Sept. 2005 at 0805, recovered on board Pelagia 1 Oct. at 0718.
Current meters60° 13' 38" N  4° 39' 36" W — SM02Ch = HOMER, 597 m depth; 300kHz bottom-frame ADCP and yo-yo fast-sampling temperature to 150m above; deployed (released from surface) 7 Sept. 2005 at 0920, recovered on board 21 Sept. at 0955. [Data from yo-yo shear sensor lost].
Current profiler (eg ADCP)60° 13' 31" N  4° 40' 3" W — SM03Cn = NIOZ lander, 598 m depth; 300kHz bottom-frame ADCP, 2 MHz Nortek AquaDopp current meter, both ~1.75 mab, 112 thermistors every 0.5 m sampling each 2 s, 2 MHz Nortek AquaDopp current meter ~ 88 mab; deployed (released from surface) 7 Sept. 2005 at 1159, recovered on board 21 Sept. at 1128 (thermistors), 1140 (lander). Short, uncalibrated thermistor records, 9 failed.
Current profiler (eg ADCP)60° 13' 38" N  4° 39' 36" W — SM02Ch = HOMER, 597 m depth; 300kHz bottom-frame ADCP and yo-yo fast-sampling temperature to 150m above; deployed (released from surface) 7 Sept. 2005 at 0920, recovered on board 21 Sept. at 0955. [Data from yo-yo shear sensor lost].
Current profiler (eg ADCP)60° 12' 48" N  4° 42' 0" W — SM04Wc = 150kHz bottom-frame ADCP and temperature, 599 m depth; deployed (released from surface) 7 Sept. 2005 at 1330, recovered on board 21 Sept. at 0809.
Current profiler (eg ADCP)60° 12' 42" N  4° 38' 35" W — SM09Sc = 150kHz bottom-frame ADCP and temperature, 553 m depth; deployed (released from surface) 8 Sept. 2005 at 0946, recovered on board 21 Sept. at 1230.
Current profiler (eg ADCP)60° 14' 29" N  4° 37' 13" W — SM07Ec = 600kHz bottom-frame ADCP, 597 m depth; deployed (released from surface) 8 Sept. 2005 at 0724, recovered on board 21 Sept. at 0644.
Current profiler (eg ADCP)60° 15' 0" N  4° 41' 18" W — SM06Nc = 75kHz moored ADCP, 653 m depth; deployed (released from surface) 7 Sept. 2005 at 1703, recovered on board Pelagia 30 Sept. at 1802.
Other physical oceanographic measurements60° 13' 38" N  4° 39' 36" W — SM02Ch = HOMER, 597 m depth; 300kHz bottom-frame ADCP and yo-yo fast-sampling temperature to 150m above; deployed (released from surface) 7 Sept. 2005 at 0920, recovered on board 21 Sept. at 0955. [Data from yo-yo shear sensor lost].
Other physical oceanographic measurements60° 14' 24" N  4° 37' 27" W — SM08Et = microcat (lowest; temperature and conductivity) and 12 mini-loggers (temperature) @ 4m intervals on line, 597 m depth; deployed (released from surface) 8 Sept. 2005 at 0827, recovered on board 21 Sept. at 0701.
Other physical oceanographic measurements60° 12' 54" N  4° 41' 50" W — SM05Wt = microcat (lowest; temperature and conductivity) and 12 mini-loggers (temperature) @ 4m intervals on line, 601 m depth; deployed (released from surface) 7 Sept. 2005 at 1500, recovered on board 21 Sept. at 0841.
Data held at BODC Get data
Series/Profiles 
2  Moored CTD
Reference numbers
Salinity of the water column
Temperature of the water column
Electrical conductivity of the water column
Sea level
Date and time
[Show series]
Reference numbers
Salinity of the water column
Temperature of the water column
Electrical conductivity of the water column
Sea level
Date and time
[Hide series]

BODC idDate/TimeLocationDoc.
11707032005-09-08 12:00:03  — 2005-09-21 15:11:02 60° 12' 54" N  4° 41' 50" W  View metadata report for BODC series reference number 1170703
11706962005-09-08 12:00:03  — 2005-09-21 16:14:03 60° 14' 24" N  4° 37' 27" W  View metadata report for BODC series reference number 1170696
37  Water temperature and/or salinity monitor
Reference numbers
Date and time
Temperature of the water column
[Show series]
Reference numbers
Date and time
Temperature of the water column
[Hide series]

BODC idDate/TimeLocationDoc.
11704022005-09-07 06:00  — 2005-09-22 17:12 60° 14' 24" N  4° 37' 27" W  View metadata report for BODC series reference number 1170402
11705312005-09-07 06:00  — 2005-09-23 12:44 60° 12' 47" N  4° 38' 26" W  View metadata report for BODC series reference number 1170531
11705672005-09-07 06:00  — 2005-09-23 10:28 60° 12' 54" N  4° 41' 50" W  View metadata report for BODC series reference number 1170567
11706352005-09-07 06:00  — 2005-09-23 09:36 60° 12' 54" N  4° 41' 50" W  View metadata report for BODC series reference number 1170635
11706592005-09-07 06:00  — 2005-09-23 08:04 60° 12' 54" N  4° 41' 50" W  View metadata report for BODC series reference number 1170659
11706602005-09-07 06:00  — 2005-09-23 07:38 60° 12' 54" N  4° 41' 50" W  View metadata report for BODC series reference number 1170660
11706842005-09-07 06:00  — 2005-09-22 15:20 60° 12' 48" N  4° 42' 0" W  View metadata report for BODC series reference number 1170684
11704992005-09-07 06:00  — 2005-09-23 13:16 60° 12' 47" N  4° 38' 26" W  View metadata report for BODC series reference number 1170499
11705432005-09-07 06:00  — 2005-09-23 12:36 60° 12' 47" N  4° 38' 26" W  View metadata report for BODC series reference number 1170543
11705552005-09-07 06:00  — 2005-09-23 12:28 60° 12' 47" N  4° 38' 26" W  View metadata report for BODC series reference number 1170555
11705792005-09-07 06:00  — 2005-09-23 10:16 60° 12' 54" N  4° 41' 50" W  View metadata report for BODC series reference number 1170579
11705922005-09-07 06:00  — 2005-09-23 10:00 60° 12' 54" N  4° 41' 50" W  View metadata report for BODC series reference number 1170592
11706722005-09-07 06:00  — 2005-09-22 14:52 60° 12' 42" N  4° 38' 35" W  View metadata report for BODC series reference number 1170672
11703102005-09-07 06:00  — 2005-09-22 17:52 60° 14' 24" N  4° 37' 27" W  View metadata report for BODC series reference number 1170310
11703342005-09-07 06:00  — 2005-09-22 19:20 60° 14' 24" N  4° 37' 27" W  View metadata report for BODC series reference number 1170334
11703582005-09-07 06:00  — 2005-09-22 18:30 60° 14' 24" N  4° 37' 27" W  View metadata report for BODC series reference number 1170358
11704382005-09-07 06:00  — 2005-09-23 13:54 60° 12' 47" N  4° 38' 26" W  View metadata report for BODC series reference number 1170438
11706472005-09-07 06:00  — 2005-09-23 08:24 60° 12' 54" N  4° 41' 50" W  View metadata report for BODC series reference number 1170647
11703092005-09-07 06:00  — 2005-09-22 15:32 60° 14' 24" N  4° 37' 27" W  View metadata report for BODC series reference number 1170309
11704142005-09-07 06:00  — 2005-09-23 14:20 60° 12' 47" N  4° 38' 26" W  View metadata report for BODC series reference number 1170414
11704632005-09-07 06:00  — 2005-09-23 13:40 60° 12' 47" N  4° 38' 26" W  View metadata report for BODC series reference number 1170463
11705062005-09-07 06:00  — 2005-09-23 13:00 60° 12' 47" N  4° 38' 26" W  View metadata report for BODC series reference number 1170506
11705182005-09-07 06:00  — 2005-09-23 12:52 60° 12' 47" N  4° 38' 26" W  View metadata report for BODC series reference number 1170518
11702912005-09-07 06:00  — 2005-09-22 19:02 60° 14' 24" N  4° 37' 27" W  View metadata report for BODC series reference number 1170291
11703222005-09-07 06:00  — 2005-09-22 17:28 60° 14' 24" N  4° 37' 27" W  View metadata report for BODC series reference number 1170322
11703462005-09-07 06:00  — 2005-09-22 18:12 60° 14' 24" N  4° 37' 27" W  View metadata report for BODC series reference number 1170346
11704512005-09-07 06:00  — 2005-09-23 13:44 60° 12' 47" N  4° 38' 26" W  View metadata report for BODC series reference number 1170451
11704872005-09-07 06:00  — 2005-09-23 13:22 60° 12' 47" N  4° 38' 26" W  View metadata report for BODC series reference number 1170487
11704752005-09-07 06:00  — 2005-09-23 13:32 60° 12' 47" N  4° 38' 26" W  View metadata report for BODC series reference number 1170475
11705802005-09-07 06:00  — 2005-09-23 10:08 60° 12' 54" N  4° 41' 50" W  View metadata report for BODC series reference number 1170580
11702782005-09-07 06:00  — 2005-09-22 17:20 60° 14' 24" N  4° 37' 27" W  View metadata report for BODC series reference number 1170278
11703712005-09-07 06:00  — 2005-09-22 17:04 60° 14' 24" N  4° 37' 27" W  View metadata report for BODC series reference number 1170371
11703832005-09-07 06:00  — 2005-09-22 18:02 60° 14' 24" N  4° 37' 27" W  View metadata report for BODC series reference number 1170383
11703952005-09-07 06:00  — 2005-09-22 17:38 60° 14' 24" N  4° 37' 27" W  View metadata report for BODC series reference number 1170395
11704262005-09-07 06:00  — 2005-09-23 14:00 60° 12' 47" N  4° 38' 26" W  View metadata report for BODC series reference number 1170426
11706112005-09-07 06:00  — 2005-09-23 09:54 60° 12' 54" N  4° 41' 50" W  View metadata report for BODC series reference number 1170611
11706232005-09-07 06:00  — 2005-09-23 09:48 60° 12' 54" N  4° 41' 50" W  View metadata report for BODC series reference number 1170623
Discrete samples 
105  CTD frame plus rosette samplerSalinity of the water column
Temperature of the water column
Dissolved oxygen parameters in the water column
Density of the water column

 

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