A reassessment of current volcanic emissions from the Central American arc with specific examples from Nicaragua

Mather, Tamsin A.; Pyle, David M.; Tsanev, V.; McGonigle, Andrew J. S.; Oppenheimer, Clive; Allen, Andrew G.

doi:10.1016/j.jvolgeores.2005.07.021

Cited by 90 publications

(138 citation statements)

References 55 publications

Supporting

Mentioning

125

Contrasting

Order By: Relevance

“…More specifically, our results are qualitatively consistent with the CO 2 /SO 2 ratio of 2.7, proposed by Hilton et al (2002) as representative of volcanic gas emissions in the Central american Volcanic arc (CaVa). a slightly lower CO 2 /SO 2 ratio (1-2.2) was proposed for CaVa by (Mather et al 2006), which is still within the range of variation of our results.…”

Section: Discussionsupporting

confidence: 88%

Measurements of volcanic SO2 and CO2 fluxes by combined DOAS, Multi-GAS and FTIR observations: a case study from Turrialba and Telica volcanoes

Conde

Robidoux

Avard³

et al. 2014

Int J Earth Sci (Geol Rundsch)

View full text Add to dashboard Cite

crateric SO 2 emissions, and electrochemical/nDIR multicomponent gas analyser system (multi-GaS) instruments for measuring CO 2 /SO 2 ratios of excerpts of the volcanic plume. This study aims to quantify the representativeness of excerpts of CO 2 /SO 2 ratios measured by Multi-GaS as a fraction of the whole plume composition, by comparison with simultaneously measured CO 2 /SO 2 ratios using crosscrater Fourier transform infrared spectroscopy (FTIR). Two study cases are presented: Telica volcano (nicaragua), with a homogenous plume, quiescent degassing from a deep source and ambient temperature, and Turrialba volcano (Costa Rica), which has a non-homogeneous plume from three main sources with different compositions and temperatures. Our comparison shows that in our "easier case" (Telica), FTIR and Multi-GaS CO 2 /SO 2 ratios agree within a factor about 3 %. In our "complicated case" (Turrialba), Multi-GaS and FTIR yield CO 2 /SO 2 ratios differing by approximately 13-25 % at most. These results suggest that a fair estimation of volcanic CO 2 emissions can be provided by the combination of DOaS and Multi-GaS instruments for volcanoes with similar degassing conditions as Telica or Turrialba. Based on the results of this comparison, we report that by the time our measurements were made, Telica and Turrialba were emitting approximately 100 and 1,000 t day −1 of CO 2 , respectively.

show abstract

Section: Discussionsupporting

confidence: 88%

Measurements of volcanic SO2 and CO2 fluxes by combined DOAS, Multi-GAS and FTIR observations: a case study from Turrialba and Telica volcanoes

Conde

Robidoux

Avard³

et al. 2014

Int J Earth Sci (Geol Rundsch)

View full text Add to dashboard Cite

show abstract

“…Such corrections account for dark spectrum, offset and stray light. We estimate that the error in the column amount contributes 0.006-0.014 to the squared variation coefficient of the total flux, whilst error contributions from the distance traversed perpendicular to the plume and from the assumed wind direction following the approached detailed in Mather et al (2006) are 0.001-0.006 and ∼ 0.003 respectively. Note however that all these errors are negligible in comparison to uncertainties in the plume speed (e.g., Stoiber et al, 1983).…”

Section: Errors In the So 2 Flux Measurementsmentioning

confidence: 93%

“…Error in the SO 2 flux measurements is derived from four different factors, including the retrieved column amount, the distance perpendicular to the plume transport direction, the angle between the assumed wind direction and the traverse path and the plume transport speed (Mather et al, 2006). Error in the retrieved SO 2 column amount depends on many factors (Stutz and Platt, 1996;Hausmann et al, 1999;Kern et al, 2010), but we assume that the dominant error is induced by variable cloudiness that we compensate using artificial constant dark, calculated from each recorded spectrum, in the range of blind pixel (pixel below 290 nm) (Tsanev, 2008).…”

Section: Errors In the So 2 Flux Measurementsmentioning

confidence: 99%

“…Over the last ten years, the increasing development in the field of remote sensing has improved our knowledge on the distribution of volcanic volatile sources across the earth and even on the remote and less accessible edifices (McGonigle et al, 2004;Mather et al, 2006;Bani et al, 2012;McCormick et al, 2012). But still many volcanoes on earth have never had their degassing rates evaluated.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Sulfur dioxide emissions from Papandayan and Bromo, two Indonesian volcanoes

Bani

Surono²,

Hendrasto³

et al. 2013

Nat. Hazards Earth Syst. Sci.

View full text Add to dashboard Cite

Abstract. Indonesia hosts 79 active volcanoes, representing 14 % of all active volcanoes worldwide. However, little is known about their SO 2 contribution into the atmosphere, due to isolation and access difficulties. Existing SO 2 emission budgets for the Indonesian archipelago are based on extrapolations and inferences as there is a considerable lack of field assessments of degassing. Here, we present the first SO 2 flux measurements using differential optical absorption spectroscopy (DOAS) for Papandayan and Bromo, two of the most active volcanoes in Indonesia. Results indicate mean SO 2 emission rates of 1.4 t d −1 from the fumarolic activity of Papandayan and more than 22-32 t d −1 of SO 2 released by Bromo during a declining eruptive phase. These DOAS results are very encouraging and pave the way for a better evaluation of Indonesian volcanic emissions.

show abstract

“…In the days of our observations, mean wind speed and direction were of ~5 m s -1 toward the SW. Error in SO 2 flux detection by UV spectroscopy depends mainly on the uncertainty in the plume-wind speed (e.g. Doukas, 2002;Mather et al, 2006). Stoiber et al (1983) estimated uncertainty in flux calculation between 10-40%.…”

Section: Uv Spectroscopymentioning

confidence: 99%

Heat and SO2 Emission Rates at Active Volcanoes - The Case Study of Masaya, Nicaragua

Spampinato¹,

Salerno²

2012

New Achievements in Geoscience

View full text Add to dashboard Cite

A reassessment of current volcanic emissions from the Central American arc with specific examples from Nicaragua

Cited by 90 publications

References 55 publications

Measurements of volcanic SO2 and CO2 fluxes by combined DOAS, Multi-GAS and FTIR observations: a case study from Turrialba and Telica volcanoes

Measurements of volcanic SO2 and CO2 fluxes by combined DOAS, Multi-GAS and FTIR observations: a case study from Turrialba and Telica volcanoes

Sulfur dioxide emissions from Papandayan and Bromo, two Indonesian volcanoes

Heat and SO2 Emission Rates at Active Volcanoes - The Case Study of Masaya, Nicaragua

Contact Info

Product

Resources

About