TY - JOUR
T1 - Opportunistic observations of Mount Erebus volcanic plume HCl, HF and SO2 by high resolution solar occultation mid infra-red spectroscopy
AU - Smale, Dan
AU - Hannigan, James W.
AU - Lad, Sanil
AU - Murphy, Mark
AU - McGaw, Jamie
AU - Robinson, John
N1 - Publisher Copyright:
© 2023 National Institute of Water and Atmospheric Research
PY - 2023/10
Y1 - 2023/10
N2 - Opportunistic large bandwidth, high resolution, high signal to noise ratio mid-infrared solar occultation spectral measurements of the Mount Erebus (Ross Island, Antarctica) volcanic plume have been analysed to retrieve HCl, HF and SO2 plume volume mixing ratios. Such measurements are sparse, comprising of only eight observations spanning 26 years. The calculated mean mass ratios of HF/HCl (2.11+/-0.38), HCl/SO2 (0.56+/-0.08) and HF/SO2 (0.35+/-0.06) are comparable to other measurements. The mean mass ratios are consistent over time indicating long term stability of Erebus volcanic processes and composition.
AB - Opportunistic large bandwidth, high resolution, high signal to noise ratio mid-infrared solar occultation spectral measurements of the Mount Erebus (Ross Island, Antarctica) volcanic plume have been analysed to retrieve HCl, HF and SO2 plume volume mixing ratios. Such measurements are sparse, comprising of only eight observations spanning 26 years. The calculated mean mass ratios of HF/HCl (2.11+/-0.38), HCl/SO2 (0.56+/-0.08) and HF/SO2 (0.35+/-0.06) are comparable to other measurements. The mean mass ratios are consistent over time indicating long term stability of Erebus volcanic processes and composition.
KW - MIR FTIR spectroscopy
KW - Mount Erebus
KW - Volcanic plume composition
UR - https://www.scopus.com/pages/publications/85160019244
U2 - 10.1016/j.jqsrt.2023.108665
DO - 10.1016/j.jqsrt.2023.108665
M3 - Article
AN - SCOPUS:85160019244
SN - 0022-4073
VL - 307
JO - Journal of Quantitative Spectroscopy and Radiative Transfer
JF - Journal of Quantitative Spectroscopy and Radiative Transfer
M1 - 108665
ER -