RRS Challenger CH96
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | RRS Challenger (74CH) |
| Cruise identifier | CH96 |
| Cruise period | 1992-09-01 — 1992-09-21 |
| Status | Completed |
| Port of departure | Southampton, United Kingdom |
| Port of return | Barry, United Kingdom |
| Purpose | Research |
| Objectives | Study of Rhine outflow ROFI (Region of Freshwater Influence) |
| Chief scientist | John H Simpson (University of Wales, Bangor School of Ocean Sciences) |
| Project | MAST 50 PROFILE (EC) |
| Coordinating body | POL |
| Ocean/sea areas | |
| General | North Sea |
| Specific | North Sea near to Netherlands coast, Rhine outflow |
| Track charts |  |
| Measurements | |
| Physical oceanography | |
| CTD stations | Quantity: number of profiles = 170 Description: plus Searover, undulating CTD. 120h at 7 knots |
| Transparency (eg transmissometer) | Quantity: track kilometres = 3600 Description: SeaRover with transmissometer |
| Transparency (eg transmissometer) | Quantity: number of profiles = 170 Description: Profiles of transmittance and along track data, and calibration samples |
| Current meters | Quantity: number of stations = 5 Description: 19 cms |
| Current profiler (eg ADCP) | Description: Shipboard ADCP, continuous observations of velocity relative to bottom |
| Chemical oceanography | |
| Nitrate | Quantity: number of profiles = 100 Description: from discrete samples |
| Biology and fisheries | |
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Quantity: track kilometres = 3600 Description: SeaRover with fluorometer |
| Phytoplankton pigs (eg chlorophyll, fluorescence) | Quantity: number of profiles = 170 Description: Profiles of chlorophyll fluorescence and alongtrack data,+ calibration samples |
| Geology and geophysics | |
| Other geological/geophysical measurements | Quantity: number of samples = 120 Description: Particle size spectra determined by laser scattering |
| Other geological/geophysical measurements | Quantity: number of experiments = 17 Description: (spectra) settling velocities of particles for samples in settling vel. tubes |
| Moorings, landers, buoys | |
| Physical oceanography | |
| Transparency (eg transmissometer) | 53° 13' 0" N 4° 13' 48" E — 2 transmissometers |
| Transparency (eg transmissometer) | 52° 17' 30" N 4° 12' 0" E — 2 transmissometers, 1 fluorometer |
| Transparency (eg transmissometer) | 52° 16' 47" N 4° 4' 30" E — 2 transmissometers |
| Current meters | 52° 18' 36" N 4° 19' 17" E — Mooring D: as mooring B, but only 1 transmissometer, water depth 19m |
| Current meters | 52° 22' 0" N 4° 10' 0" E — Mooring C: 4 current meters, 1 temperature/salinity logger, water depth 18m |
| Current meters | 52° 16' 47" N 4° 4' 30" E — Mooring B: 4 current meters, 1 temperature/salinity logger, water depth 20m |
| Current meters | 52° 13' 0" N 4° 13' 48" E — Mooring A: 4 current meters, 1 temperature/salinity logger, water depth 20m |
| Current meters | 52° 17' 30" N 4° 12' 0" E — Mooring E: 3 current meters, 1 temperature/salinity logger |
| Current profiler (eg ADCP) | 52° 16' 47" N 4° 4' 30" E — 1 bottom mounted ADCP |
| Current profiler (eg ADCP) | 52° 13' 0" N 4° 13' 48" E — 1 bottom mounted ADCP |
| Current profiler (eg ADCP) | 52° 22' 0" N 4° 10' 0" E — 1 bottom mounted ADCP |
| Sea level (inc. bot. press., inverted echosounder) | 52° 13' 0" N 4° 13' 48" E — 1 bottom pressure recorder |
| Sea level (inc. bot. press., inverted echosounder) | 52° 16' 47" N 4° 4' 30" E — 1 bottom mounted ADCP |
| Biology and fisheries | |
| Phytoplankton pigs (eg chlorophyll, fluorescence) | 52° 13' 0" N 4° 13' 48" E — 1 fluorometer |
| Meteorology | |
| Routine standard measurements | 52° 17' 30" N 4° 12' 0" E — Met. instruments: wind sp/dir, air temp, pressure, solar irrad., waverider buoy |
