Results of evolved gas analysis (EGA) on ash + salt samples from the 15 January 2022 eruption of Hunga volcano, Tonga

Cite as:

Colombier, Mathieu; Ukstins, Ingrid A.; Tegtmeier, Susann; Scheu, Bettina; Cronin, Shane J.; Thivet, Simon; Paredes-Mariño, Joali; Cimarelli, Corrado; Hess, Kai-Uwe; Kula, Taaniela; Latu’ila, Folauhola H.; Dingwell, Donald B. (2023): Results of evolved gas analysis (EGA) on ash + salt samples from the 15 January 2022 eruption of Hunga volcano, Tonga. GFZ Data Services. https://doi.org/10.5880/fidgeo.2023.014

Status

I N R E V I E W : Colombier, Mathieu; Ukstins, Ingrid A.; Tegtmeier, Susann; Scheu, Bettina; Cronin, Shane J.; Thivet, Simon; Paredes-Mariño, Joali; Cimarelli, Corrado; Hess, Kai-Uwe; Kula, Taaniela; Latu’ila, Folauhola H.; Dingwell, Donald B. (2023): Results of evolved gas analysis (EGA) on ash + salt samples from the 15 January 2022 eruption of Hunga volcano, Tonga. GFZ Data Services. https://doi.org/10.5880/fidgeo.2023.014

Abstract

These data files contain the results of Evolved Gas Analysis (EGA) on a Mettler-Toledo TGA-DSC 3+ attached to a Pfeiffer Vacuum GSD 320 gas mass spectrometer on ash samples from the 15 January 2022 eruption of Hunga volcano, Tonga. Samples were heated in Nitrogen at a rate of 5 °C/min from 30 to 150 °C for dehydration purposes and then at a rate of 30 °C/min from 150 °C to 1300 °C. During heating, the relative amount of different volatile species (H2O, CO2, SO2, HCl, and H2S, which are extracted from mass-to-charge ratios of 18, 44, 64, 36, and 34, respectively) were recorded by the gas mass spectrometer. Natural samples collected for the analysis were bulk ash material or correspond to a given ash fraction. Particles were unwashed and dried at 40°C before analysis. We compared the signals for natural samples with (i) a mixture of salt-free dense glassy particles, white and dark pumice (HT10), (ii) pure halite, anhydrite, gypsum, calcite and pyrit, (iii) mix between pure magmatic particles (HT10) from (i) and manually added components from (iii).

Authors

Colombier, Mathieu;Ludwig-Maximilians-Universität München, Munich, Germany
Ukstins, Ingrid A.;School of Environment, University of Auckland, New Zealand
Tegtmeier, Susann;University of Saskatchewan, Institute of Space and Atmospheric Studies, Saskatoon, Canada
Scheu, Bettina;Ludwig-Maximilians-Universität München, Munich, Germany
Cronin, Shane J.;School of Environment, University of Auckland, New Zealand
Thivet, Simon;Ludwig-Maximilians-Universität München, Munich, Germany
Paredes-Mariño, Joali;School of Environment, University of Auckland, New Zealand
Cimarelli, Corrado;Ludwig-Maximilians-Universität München, Munich, Germany
Hess, Kai-Uwe;Ludwig-Maximilians-Universität München, Munich, Germany
Kula, Taaniela;Tonga Geological Services, Nuku’alofa, Kingdom of Tonga
Latu’ila, Folauhola H.;Tonga Geological Services, Nuku’alofa, Kingdom of Tonga
Dingwell, Donald B.;Ludwig-Maximilians-Universität München, Munich, Germany

Contact

Colombier, Mathieu (Post-doc); Ludwig-Maximilians-Universität München, Munich, Germany;

Funders

H2020 European Research Council: EAVESDROP (ERC ADG 2018 834225)

Keywords

Volcano, Submarine eruption, ash aggregation, salt formation, ash_and_lapilli, Composition, Scanning Electrone Microscope, Composition, Scanning Electrone Microscope, ash_and_lapilli

GCMD Science Keywords

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