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首页> 外文期刊>International journal of remote sensing >Exceptional Sulfur Degassing From Nyamuragira Volcano, 1979-2005
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Exceptional Sulfur Degassing From Nyamuragira Volcano, 1979-2005

机译:1979-2005年从Nyamuragira火山脱硫的极佳脱气

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The sulfur dioxide (SO_2) output from Nyamuragira volcano has been monitored by the Total Ozone Mapping Spectrometer (TOMS) since 1979, and is evaluated here to quantify the emissions from this highly productive volcano. The majority of Nyamuragira's emissions were emplaced in the lower to middle troposphere, with SO_2 removal rates of 30-90% per day (k=4.13 × 10~(-6) to 2.66 × 10~(-5)s~(-1)). We have tested a new method of back-calculating persistent, effusive emission fluxes from once-daily observations, which accounts for this rapid daily removal of SO_2 that cannot be measured using satellite 'snapshots'. Twelve of the 14 eruptions during this period each produced ≥0.8 teragrams (Tg) of SO_2. Nyamuragira erupted nearly 25 Tg of SO_2 during these eruptions, and probably emitted significantly more than we could measure by TOMS. Nyamuragira may be the largest volcanic source of sulfur to the atmosphere for the past few decades.
机译:自1979年以来,Nyamuragira火山的二氧化硫(SO_2)一直由总臭氧图谱仪(TOMS)进行监测,并在此处进行评估以量化该高产火山的排放量。 Nyamuragira的大部分排放物位于对流层中低层,SO_2去除率每天为30-90%(k = 4.13×10〜(-6)至2.66×10〜(-5)s〜(-1) ))。我们已经测试了一种从每天一次的观测值中反算出持续性,排放性排放通量的新方法,该方法说明了SO_2的这种快速每日清除,这无法使用卫星“快照”进行测量。在此期间的14次喷发中,有12次喷发产生的SO_2≥0.8毫克(Tg)。 Nyamuragira在这些喷发期间喷发了将近25 Tg的SO_2,其排放量可能大大超过我们用TOMS测得的水平。在过去的几十年中,尼亚穆拉吉拉火山可能是大气中最大的火山硫来源。

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