BOTTLE,20191212CSICIIMFFP # Data from Fiz F Perez via DIGITAL CSIC 12/12/201 # Ship: Investigador # Cruise: Galicia-XII # EXPOCODE 29IN19910910 # Dates: 1991-09-10 - 1991-09-26 # Region: Off NW Spain License: The authors appreciate that users of these data: 1) Contact F.G. Figueiras (paco@iim.csic.es) or Anton Velo (avelo@iim.csic.es) to follow the uses of the data, and 2) Include the requested acknowledgment (cite using the DOI of this dataset) in any presentations or publications. Authors: F.G. Figueiras, F.F. Perez, C.G. Castro, X.A. Alvarez-Salgado, G. Rosón y Aida F. Rios. CAMPAÑA GALICIA-XII:Datos basicos. Instituto de Investigaciones Marinas, Consejo Superior de Investigaciones Cientificas (CSIC). http://dx.doi.org/10.1016/S0079-6611(03)00007-7 and http://dx.doi.org/10.1007/s002270050271 # Chief Scientist - F.G. Figueiras # 37 Oceanic stations CTD cast (SBE9 with 12 1.5L Niskin) # 7 Coastal station repeated 6 times and a 24 hours station # Hydro: Who - Fiz F. Rios/ G. Roson Status - fina # Bottom depth approximated from global topography # Nuts/O2: Who -A. Alvarez-Salgado/C.G. Castro/Fiz F Perez; Status - final # Notes: Winkler titration Pt electrode # Nitrate Autoanalizer using Cd-Cu reduction Mouriño and Fraga 1985 # Nitite Autoanalizer diazotacion of sulphamide and naftiletilendiamine # Phosphate Autoanalizer Hansen and Grasshof (1983) # Silicate Autoanalizer Hansen and Grasshof (1983) # TA: Who - Rios/Perez; Status - final # Notes: precision 0.1%; accuracy 2.3 micromol/kg # No CRM # pH: Who - Rios/Perez; Status - final # Notes: pHNBS at 15 DEGC # Potentiometric with glass electrode # Claimed accuracy of 0.010 # Perez and Fraga 1987 # CHLORA fluoremetrically determined.Particulate C,N and P are also analyzed using a PerkinElmer analizer # References: http://dx.doi.org/10.1007/s002270050271 Alvarez-Salgado et al. 1998 Hydrodynamic and chemical conditions during onset of a red-tide assemblage in an estuarine upwelling ecosystem, Name Units ___________ ____________ STNNBR CASTNO BTLNBR BTLNBR_FLAG_W DATE 'aaaammdd' LATITUDE 'degrees' LONGITUDE 'degrees' BOTTOM DEPTH 'meters' DEPTH 'meters' CTDPRS 'DeciBARS' CTDTMP 'ITS-90' SALNTY 'PSS-78' SALNTY_FLAG_W OXYGEN 'micromol/kg' OXYGEN_FLAG_W SILCAT 'micromol/kg' SILCAT_FLAG_W NITRAT 'micromol/kg' NITRAT_FLAG_W NITRIT 'micromol/kg' NITRIT_FLAG_W PHSPHT 'micromol/kg' PHSPHT_FLAG_W ALKALI 'micromol/kg' ALKALI_FLAG_W PH_NBS 'pH units' PH_TEMP 'DEGC' PH_NBS_FLAG_W AMMONIUM 'micromol/kg' AMMONIUM_flag CHLORA 'microg/L' CHLORA_FLAG_W NOP 'micromol/L' NOP_flag POC 'micromol/L' POC_flag POP 'micromol/L' POP_flag THETA 'DEGC' DESCRIPTION The main aim of the study was to study the patterns of vertical migration of red-tide species belonging to the subsurface chlorophyll maximum, the correlation of hydrographic conditions with ecological responses of migratory species, and the possible origin of phytoplankton blooms in nutrient-depleted surface layers. From Setember 10 to Setember 26, 1991, the GALICIA-XII cruise was run on R/V Investigador-S. The region studied is from 41.7N to 44N and from 7W to 10W. Thirty-seven stations were sampled along eight transects perpendicular to the coastline. In addition seven stations inside of the Ria of Vigo was done 6 times during 3 weeks and a fix station in the central position in the Ria of Vigo was repeated during 24 hours at 2 hours of intervals Hydrographic sampling was performed with an SBE 9 conductivity-temperature-depth (CTD) probe incorporated into a rosette sampler with 1.7 L PVC Niskin bottles. Subsamples of salinity, nutrients and chlorophyIl a were taken with 1.7 L polyvinyl chloride Niskin bottles, placed around the rosette, at 0, 10, 20, 30, 40, 50, 75, 100, 125, 150,200,250,300, 350 and 400 m depth. In the Ria of Vigo, water samples were taken with 5 litre Niskin bottles. Salinity, chlorophyll a fluorescence, nitrate, ammonium, silicate, An a SBE-25 CTD is used to get temperature and salinity profiles. Salinity was calculated from conductivity measurements with an AUTOSAL 8400A using Eq. (6) of UNESCO (1981), with an estimated analytical error of 0.003. Nutrient concentrations were determined by segmented flow analysis with Technicon AAII systems, following Hansen and Grasshof (1983) with some improvements (Mouriño and Fraga, 1985; Alvarez-Salgado et al., 1992). The analytical errors were 0.02 micromol/kg for nitrite, 0.05 micromol/kg for nitrate, ammonium and silicate and 0.01 micromol/kg for phosphate. Dissolved oxygen was determined by Winkler potentiometric titration. The estimated analytical error was 1 micromol/kg. pH (NBS) was measured potentiometrically with an error of 0.010 and normalised to 15 DEGC (Perez and Fraga, 1987a). Alkalinity was determined by potentiometric titration with HCl to a final pH of 4.45 (Perez and Fraga, 1987b). The analytical error was 2 micromol/kg. Chlorophyll was measured after 90% acetone extraction in a 10,000 R Turner fluorometer (Yentsch and Menzel, 1963). The precision was 0.05 microgr/L. Particulate organic carbon and nitrogen were collected on Whatman GF/F filters in the upper 10 m. The filtration volume was about 500 ml. Analyses were performed in a PE2400 CHN elemental analyser with a precision of 0.1 micromol/kg for carbon and 0.04 micromol/kg for nitrogen. Data available at https://digital.csic.es/