BOTTLE,20191212CSICIIMFFP
# Data from Fiz F Perez via DIGITAL CSIC 12/12/2019 
# Ship: Investigador
# Cruise: Galicia XI 
# EXPOCODE 29IN19910510
# Dates: 1991-05-10 - 1991-05-14
# Region: Off NW Spain 
 
License:  The authors appreciate that users of these data: 1) Contact Fiz F. Perez (fiz.perez@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: Fiz F. Pérez, F.G. Figueiras, Carmen G. Castro, Anton Alvarez-Salgado, G. Rosón y Aida F. Ríos. CAMPAÑA GALICIA-XI:Datos basicos. Instituto de Investigaciones Marinas, Consejo Superior de Investigaciones Cientificas (CSIC). http://hdl.handle.net/10261/89607 and http://hdl.handle.net/10261/89630. 

# Chief Scientist - Fiz F. Perez/F.G. Figueiras
# 33 stations CTD cast (SBE9 with 12 1.5L Niskin) 
# Hydro: Who - Fiz F. Rios/G. Roson Status - final 
# Bottom depth approximated from global topography 
# Nuts/O2: Who -A. Alvarez-Salgado/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
# References:   https://agupubs.onlinelibrary.wiley.com/doi/10.1029/93JC02735  Castro et al. 1994 Hydrographic conditions associated with the relaxation of an upwelling event off the Galician coast (NW Spain)
# References https://doi.org/10.1016/S0278-4343(99)00071-0  Castro et al. 2000 Coupling between the thermohaline, chemical and biological fields during two contrasting upwelling events off the NW Iberian Peninsula


 Name            Units
 ___________    ____________    
STNNBR	
CASTNO	
BTLNBR	
BTLNBR_FLAG_W	
DATE	         'aaaammdd' 
LATITUDE	     'degrees'
LONGITUDE	     'degrees'
BOTTOMDEPTH      '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	         'micro/L'
CHLORA_FLAG_W	
THETA	         'DEGC'   



DESCRIPTION
From May 10 to May 14, 1991, the GALICIA-XI cruise was run on board R/V Investigador-S. The region studied is from 42ºN to 44ºN and from 7.7ºW to 10ºW. Thirty-nine stations were sampled along eight transects perpendicular to the coastline. 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. 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 (Mourino 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. 
    
Data available at https://digital.csic.es/