Stable gas plume composition measured by OP-FTIR spectroscopy at Masaya Volcano, Nicaragua, 1998-1999.

L Horrocks; M Burton; P Francis; C Oppenheimer

doi:Doi 10.1029/1999gl008383

Stable gas plume composition measured by OP-FTIR spectroscopy at Masaya Volcano, Nicaragua, 1998-1999.

L Horrocks, M Burton, P Francis, C Oppenheimer

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Abstract

We report non-eruptive plume gas composition data collected by open-path. Fourier transform infrared (OP-FTIR) stectroscopy at the summit of Masaya's plume is characterized by SO2/HCl and HCl/HF mass ratios of 2.8-3.0 and 8.1-8.2 respectively. When combined with COSPEC SO2 emission rate data, these ratios indicate average emission rates of HC and, HF of 7.3 kgs(-1) and 0.9 kgs(-1). The gas composition is remarkably consistent, showing little temporal variation on the scale of days, weeks or even between the two observation periods, one-year apart. Such striking uniformity is best explained by steady-state open system degassing.

Original language	English
Pages (from-to)	3497-3500
Number of pages	4
Journal	Geophysical Research Letters
Volume	26
Issue number	23
DOIs	https://doi.org/Doi 10.1029/1999gl008383
Publication status	Published - 1999

Keywords

infrared-spectroscopy

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@article{0a592efd15fd4719a045f24aa851f251,

title = "Stable gas plume composition measured by OP-FTIR spectroscopy at Masaya Volcano, Nicaragua, 1998-1999.",

abstract = "We report non-eruptive plume gas composition data collected by open-path. Fourier transform infrared (OP-FTIR) stectroscopy at the summit of Masaya's plume is characterized by SO2/HCl and HCl/HF mass ratios of 2.8-3.0 and 8.1-8.2 respectively. When combined with COSPEC SO2 emission rate data, these ratios indicate average emission rates of HC and, HF of 7.3 kgs(-1) and 0.9 kgs(-1). The gas composition is remarkably consistent, showing little temporal variation on the scale of days, weeks or even between the two observation periods, one-year apart. Such striking uniformity is best explained by steady-state open system degassing.",

keywords = "infrared-spectroscopy",

author = "L Horrocks and M Burton and P Francis and C Oppenheimer",

note = "261ln Times Cited:48 Cited References Count:12",

year = "1999",

doi = "Doi 10.1029/1999gl008383",

language = "English",

volume = "26",

pages = "3497--3500",

journal = "Geophysical Research Letters",

publisher = "American Geophysical Union ",

number = "23",

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TY - JOUR

T1 - Stable gas plume composition measured by OP-FTIR spectroscopy at Masaya Volcano, Nicaragua, 1998-1999.

AU - Horrocks, L

AU - Burton, M

AU - Francis, P

AU - Oppenheimer, C

N1 - 261ln Times Cited:48 Cited References Count:12

PY - 1999

Y1 - 1999

N2 - We report non-eruptive plume gas composition data collected by open-path. Fourier transform infrared (OP-FTIR) stectroscopy at the summit of Masaya's plume is characterized by SO2/HCl and HCl/HF mass ratios of 2.8-3.0 and 8.1-8.2 respectively. When combined with COSPEC SO2 emission rate data, these ratios indicate average emission rates of HC and, HF of 7.3 kgs(-1) and 0.9 kgs(-1). The gas composition is remarkably consistent, showing little temporal variation on the scale of days, weeks or even between the two observation periods, one-year apart. Such striking uniformity is best explained by steady-state open system degassing.

AB - We report non-eruptive plume gas composition data collected by open-path. Fourier transform infrared (OP-FTIR) stectroscopy at the summit of Masaya's plume is characterized by SO2/HCl and HCl/HF mass ratios of 2.8-3.0 and 8.1-8.2 respectively. When combined with COSPEC SO2 emission rate data, these ratios indicate average emission rates of HC and, HF of 7.3 kgs(-1) and 0.9 kgs(-1). The gas composition is remarkably consistent, showing little temporal variation on the scale of days, weeks or even between the two observation periods, one-year apart. Such striking uniformity is best explained by steady-state open system degassing.

KW - infrared-spectroscopy

U2 - Doi 10.1029/1999gl008383

DO - Doi 10.1029/1999gl008383

M3 - Article

VL - 26

SP - 3497

EP - 3500

JO - Geophysical Research Letters

JF - Geophysical Research Letters

IS - 23

ER -

Stable gas plume composition measured by OP-FTIR spectroscopy at Masaya Volcano, Nicaragua, 1998-1999.

Abstract

Keywords

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