DOI: 10.1002/jgrd.50591
论文题名: Time-averaged SO<inf>2</inf> fluxes of subduction-zone volcanoes: Example of a 32-year exhaustive survey for Japanese volcanoes
作者: Mori T. ; Shinohara H. ; Kazahaya K. ; Hirabayashi J.-I. ; Matsushima T. ; Mori T. ; Ohwada M. ; Odai M. ; Iino H. ; Miyashita M.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 15 起始页码: 8662
结束页码: 8674
语种: 英语
英文关键词: COSPEC
; DOAS
; sulfur dioxide flux
; volcanic gas
; volcanoes
Scopus关键词: Degassing
; Estimation
; Sulfur
; Sulfur dioxide
; Accurate estimation
; COSPEC
; DOAS
; Flux distributions
; Miyakejima volcano
; Power law distribution
; Temporal variation
; Volcanic gas
; Volcanoes
; atmospheric pollution
; degassing
; emission
; flux measurement
; subduction zone
; sulfur dioxide
; temporal variation
; volcanic gas
; Japan
英文摘要: All available SO2 flux data for 32 years (1975-2006) of Japanese volcanoes, accounting for about 10% of the world's arc volcanoes, were compiled to evaluate the temporal variation of the flux of each volcano and to estimate the time-averaged SO2 flux. The compiled data revealed that 6 volcanoes (Tokachi, Asama, Aso, Sakurajima, Satsuma-Iwojima, and Suwanosejima volcanoes) out of 17 significantly degassing volcanoes usually contributed more than 94% of the total flux. The time-averaged annual flux was 2.2 Tg a -1, which includes intense degassing of Miyakejima volcano after 2000, which raised the figure from 1.4 Tg a-1, indicating that a single huge emitter is capable of significantly skewing regional time-averaged degassing totals and indicating that the time-averaged flux assessments for infrequent huge emitters are important for accurate estimation. The regional SO2 flux distribution in cumulative frequency-flux plot does not obey a power law distribution. It shows a roll-off curve bending at about 500 t d-1, implying that it is misleading to assume the power law distribution for estimation of the global flux. Because the contribution of the major degassing volcanoes including the six volcanoes and additional sporadically degassing volcanoes during eruptive and posteruptive periods to the total flux is more than 95%, measurement of all large flux volcanoes can approximate the global flux. Key Points Compilation of sulfur dioxide flux of Japanese volcanoes during 1975-2006 Time-averaged annual sulfur dioxide flux of Japanese volcanoes is 2.2 Tg/a For the time-averaged flux assessments, infrequent huge emitters are important ©2013. American Geophysical Union. All Rights Reserved. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63472
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Geochemical Research Center, Graduate School of Science, University of Tokyo, Bunkyo-ku, Tokyo 113-0033, Japan; Geological Survey of Japan, AIST, Tsukuba, Japan; Volcanic Fluid Research Center, Tokyo Institute of Technology, Kusatsu, Japan; Institute of Seismology and Volcanology, Faculty of Science, Kyushu University, Shimabara, Japan; Earthquake Research Institute, University of Tokyo, Tokyo, Japan; Seismological and Volcanological Department, Japan Meteorological Agency, Tokyo, Japan
Recommended Citation:
Mori T.,Shinohara H.,Kazahaya K.,et al. Time-averaged SO<inf>2</inf> fluxes of subduction-zone volcanoes: Example of a 32-year exhaustive survey for Japanese volcanoes[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(15)