Air samples were corrected into 40 stainless-steel flasks on MR14-05 cruise. The collected air samples were analyzed for the concentrations of CO2, O2 (O2/N2), Ar (Ar/N2), CH4, CO, N2O, SF6 and H2 and the isotopic ratios of CO2, CH4, N2, O2 and Ar.The CO2, CH4, CO, N2O, SF6, H2 concentrations were determined against Tohoku Univ. primary standard gases. The isotopic ratios of CO2 were reported in per mil relative to vPDB scale. The isotopic ratios of CH4 were reported in per mil relative to Tohoku Univ. scale. The O2/N2, Ar/N2 and isotopic ratios of N2, O2 and Ar are reported in per meg relative to AIST scale. Please contact the investigator to know the details of the standard scales.
The person who hopes to use the data in a paper or a conference presentation must contact the investigator to consult about co-authorship.
Please refer to above "Use Constraints".
NDIR : non-dispersive infrared analyzer to measure CO2 concentration, FID : gas chromatography equiped with Flame Ionization Detector to measure CH4 concentration, ECD : gas chromatography equiped with Electron Capture Detector to measure N2O and SF6 concentration, RGA : gas chromatography equiped with a HgO reduction detector to measure CO and H2 concentration, IR-MS : a mass spectrometer to measure the isotopic ratios of CO2 and another mass spectrometer to measure O2/N2, Ar/N2, stable isotopic ratios of N2, O2 and Ar, GC-MS : gas chromatography mass spectrometry to measure isotopic ratios of CH4.