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Fisher R4 AR4_2004
Cruise summary report
| Cruise Info. | |
| Ship name | Fisher R4 |
| Cruise identifier | AR4_2004 |
| Cruise period | 2004-04-16 — 2004-04-20 |
| Status | Completed |
| Port of departure | Canet-en-Roussillon, France |
| Port of return | Canet-en-Roussillon, France |
| Purpose | Research |
| Objectives | ADCP, CTD, EMCM, OBS, pressure sensor and bathymetry survey of the Têt mouth, delta top and front areas, including sediment sampling and water quality monitoring in the mouth area, surrounding beaches and within the lower reaches (~2 km inland) of the Têt river. The objectives were to gather information on seabed characteristics, waves and residual currents, and suspended sediment concentrations during an oceanic flood (flash flood) event.
This cruise was the seventh and last in a series planned for the Gulf of Lions (see also AR1-2003, FR1-2003, AR1-2004, AR2-2004, AR3-2004, SED2-2004) within Workpackage 1 (Shelf and River input systems) of the European Union FP5 project European Margin Strata Formation (EUROSTRATAFORM) (EVK3-CT-2002-00079). EUROSTRATAFORM objectives are to explore the fate of sediment particles from their source in rivers through to their deposition on shallow deltas, the continental shelf and deep sea basins. |
| Chief scientist | Carl L Amos (Southampton Oceanography Centre) |
| Project | EUROSTRATAFORM |
| Coordinating body | Challenger Division, SOC, Southampton, SO14 3ZH |
| Ocean/sea areas | |
| General | Mediterranean Sea |
| Specific | Gulf of Lions, northwest Mediterranean |
| Measurements | |
| Physical oceanography | |
| Surface measurements underway (T,S) | Quantity: track kilometres = 20.372 Description: Surface temperature measurements underway, single beam Lowrance echosounder 200kHz, surface water temperature, continuous recording |
| CTD stations | Quantity: number of stations = 6 Description: CTD casts, 6600EDS (YSI Inc.) CTD, Depth, Temperature, Turbidity, Salinity, Chlorophyll a, on 20/04/06 |
| Current profiler (eg ADCP) | Quantity: track kilometres = 12.964 Description: ADCP current profiler, RDI 600 kHz Workhorse, backscatter intensity, vertical profile, continuous recording |
| Current profiler (eg ADCP) | Quantity: track kilometres = 12.964 Description: ADCP current profiler, RDI 600 kHz Workhorse, current velocity, vertical profile, continuous recording |
| Current profiler (eg ADCP) | Quantity: track kilometres = 12.964 Description: ADCP current profiler, RDI 600 kHz Workhorse, depth to bottom and seabed morphology, continuous recording |
| Other physical oceanographic measurements | Quantity: number of stations = 1 Description: Surface river current velocity measurements, 16/04/04 to 20/04/04 |
| Contamination | |
| Suspended matter | Quantity: number of stations = 1 Description: 10 water bottle samples for river surface suspended matter concentration analysis at SOES laboratories, SOC, UK, 16/04/04 to 20/04/04 |
| Geology and geophysics | |
| Grab | Quantity: number of stations = 18 Description: Swash zone beach samples N and S of Têt river mouth on 17/04/04 to 19/04/04, hand sediment sampler, for provenance analysis at SOES labs, UK |
| Grab | Quantity: number of stations = 20 Description: Bottom samples from Têt river mouth, delta top and front areas on 18/04/04, Van Veen grab, for grain size and provenance analysis at SOES labs, UK |
| Single-beam echosounding | Quantity: track kilometres = 20.372 Description: Single beam echosounding, single beam Lowrance echosounder 200kHz, depth to bottom, continuous recording |
| Moorings, landers, buoys | |
| Physical oceanography | |
| Optics (eg underwater light levels) | 42° 42' 51" N 3° 2' 41" E — OBS (Valeport 730D), bottom turbidity, one instrument, 7.3 m water depth, deployed 18/04/04, recovered 19/04/04, in plume in front of Têt mouth |
| Optics (eg underwater light levels) | 42° 42' 49" N 3° 2' 45" E — OBS (Valeport 730D), bottom turbidity, one instrument, 9.8 m water depth, deployed 18/04/04, recovered 19/04/04, in plume in front of Têt mouth |
| Current meters | 42° 42' 52" N 3° 2' 39" E — EMCM (Valeport 730D), bottom current velocity, one instrument, 6.6 m water depth, deployed 18/04/04, recovered 19/04/04, in plume in front of Têt mouth |
| Current meters | 42° 42' 49" N 3° 2' 45" E — EMCM (Valeport 730D), bottom current velocity, one instrument, 9.8 m water depth, deployed 18/04/04, recovered 19/04/04, in plume in front of Têt mouth |
| Current meters | 42° 42' 51" N 3° 2' 41" E — EMCM (Valeport 730D), bottom current velocity, one instrument, 7.3 m water depth, deployed 18/04/04, recovered 19/04/04, in plume in front of Têt mouth |
| Sea level (inc. bot. press., inverted echosounder) | 42° 42' 52" N 3° 2' 39" E — Pressure sensor (Valeport 730D), bottom pressure, one instrument, 6.6 m water depth, deployed 18/04/04, recovered 19/04/04, in plume in front of Têt mouth |
| Sea level (inc. bot. press., inverted echosounder) | 42° 42' 51" N 3° 2' 41" E — Pressure sensor (Valeport 730D), bottom pressure, one instrument, 7.3 m water depth, deployed 18/04/04, recovered 19/04/04, in plume in front of Têt mouth |
| Sea level (inc. bot. press., inverted echosounder) | 42° 42' 52" N 3° 2' 39" E — OBS (Valeport 730D), bottom turbidity, one instrument, 6.6 m water depth, deployed 18/04/04, recovered 19/04/04, in plume in front of Têt mouth |
| Sea level (inc. bot. press., inverted echosounder) | 42° 42' 49" N 3° 2' 45" E — Pressure sensor (Valeport 730D), bottom pressure, one instrument, 9.8 m water depth, deployed 18/04/04, recovered 19/04/04, in plume in front of Têt mouth |
| Instrumented wave measurements | 42° 42' 52" N 3° 2' 39" E — Wave pressure sensor (Valeport 730D), wave frequency, wave velocity, wave amplitude, one instrument, 6.6 m water depth, deployed 18/04/04, recovered 19/04/04, in plume in front of Têt mouth |
| Instrumented wave measurements | 42° 42' 51" N 3° 2' 41" E — Wave pressure sensor (Valeport 730D), wave frequency, wave velocity, wave amplitude, one instrument, 7.3 m water depth, deployed 18/04/04, recovered 19/04/04, in plume in front of Têt mouth |
| Instrumented wave measurements | 42° 42' 49" N 3° 2' 45" E — Wave pressure sensor (Valeport 730D), wave frequency, wave velocity, wave amplitude, one instrument, 9.8 m water depth, deployed 18/04/04, recovered 19/04/04, in plume in front of Têt mouth |
