RV Pelagia PE108
Cruise summary report
| Cruise Info. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ship name (ship code) | RV Pelagia (64PE) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Cruise identifier | PE108 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Cruise period | 1997-06-23 — 1997-07-14 | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Status | Completed | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Port of departure | Het Horntje, Netherlands | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Port of return | Vigo, Spain | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Objectives | OMEX II - leg 1
Benthic Biology of the Iberian Upwelling Margin. This cruise is a pilot study with the primary aim to make an extensive survey of the sea floor topography and the benthos prior to any detailed local sampling and in-situ measurements in later cruises. Objectives: 1. To investigate the existence of depocentres of labile organics on the Iberian margin, measure their importance in terms of carbon assimilation (by in-situ SCOC and growth measurements), and attempt to trace the sources fuelling them (phytopigment analyses). 2. To investigate the coupling between the responses of benthic communities and the fluxes of carbon in the OMEX area. 3. Use video and Agassiz trawl surveys help to plan benthic sampling. Narrative: Sampling planned along 3 transects and compare data with those of Omex-I (only 2 transects with sediment sampling). A seismic survey was made of each transect with a 3.5Kc echosounder to locate sampling locations. A video-Agassiz trawl was used to map the megafauna and the small-scale topography of the sea-floor. At each trawling station a CTD profile of the water column was made and samples of near-bottom water were taken. Sediment samples were colllected with a box- or multi-corer for the analysis of: macrofauna, meiofauna, mesofauna, phytopigments, nucleic acids, C/N and porosity. Phytopigments in the near-bottom water and surface sediment samples used as biomarkers for quality and origin of the phytodetritus. Preliminary measurements of SCOC in shipboard incubated cores of 30cm diameter were made. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Chief scientist | Gerard C A Duineveld (Royal Netherlands Institute for Sea Research) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Project | OMEX II | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Cruise report |  (4.58 MB) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Ocean/sea areas | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| General | North East Atlantic Ocean (limit 40W) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Track charts | (0.08 MB) | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Measurements | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Physical oceanography | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| CTD stations | Quantity: number of profiles = 13 Description: A number of CTD casts were made throughout the cruise. No. of casts not noted. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Biology and fisheries | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Crustaceans | Quantity: number of hauls = 12 Description: video-Agassiz trawls made throughout the cruise, a number of shrimp and Galathea's were caught | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Other biological/fisheries measurement | Quantity: number of hauls = 12 Description: video-Agassiz trawls made throughout the cruise, a number of shrimp and Galathea's were caught | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Geology and geophysics | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Core - soft bottom | Quantity: number of cores = 84 Description: 16 multi-cores and 68 box-cores | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Multi-beam echosounding | Quantity: number of profiles = 23 Description: echo-sounder profiles made before each station | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Data held at BODC | Get data | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Series/Profiles | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 7 Bottle station | Reference numbers Vertical spatial coordinates Chlorophyll pigment concentrations in water bodies Quality control flags Reference numbers Vertical spatial coordinates Chlorophyll pigment concentrations in water bodies Quality control flags
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| 13 CTD/STD cast | Transmittance and attenuance of the water column Dissolved oxygen parameters in the water column Salinity of the water column Temperature of the water column Vertical spatial coordinates Density of the water column Chlorophyll pigment concentrations in water bodies Transmittance and attenuance of the water column Dissolved oxygen parameters in the water column Salinity of the water column Temperature of the water column Vertical spatial coordinates Density of the water column Chlorophyll pigment concentrations in water bodies
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| Discrete samples | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 44 Box core | Insect and earthworm taxonomy-related abundance per unit area of the bed Zoobenthos taxonomic abundance Other fluxes between the bed and the water column Zoobenthos taxonomy-related wet weight biomass per unit area of the bed Zoobenthos generic abundance Phaeopigment concentrations in sediment Sediment water content, porosity and surface area Chlorophyll pigment concentrations in sediment Zoobenthos dry weight biomass Sediment grain size parameters Nitrogen concentrations in sediment Carbon concentrations in sediment | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 13 CTD frame plus rosette sampler | Transmittance and attenuance of the water column Dissolved oxygen parameters in the water column Salinity of the water column Temperature of the water column Density of the water column Chlorophyll pigment concentrations in water bodies | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 12 Epibenthic Sledge | Zoobenthos taxonomic abundance Zoobenthos taxonomy-related wet weight biomass per unit area of the bed | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| 7 Multicorer | Insect and earthworm taxonomy-related abundance per unit area of the bed Zoobenthos taxonomic abundance Phaeopigment concentrations in sediment Sediment water content, porosity and surface area Chlorophyll pigment concentrations in sediment Zoobenthos dry weight biomass Sediment grain size parameters Nitrogen concentrations in sediment Carbon concentrations in sediment |
