Volcanic Contribution of Chlorine to the Stratosphere: More Significant to Ozone Than Previously Estimated?
Volcanic Contribution of Chlorine to the Stratosphere: More Significant to Ozone Than Previously Estimated?
复制标题
火山对平流层氯的贡献：对臭氧层的影响比之前估计的更重要？
作者：
D. A. Johnston
早先根据对爆发前岩浆氯含量的评估对火山氯排放量的估计对于某些爆发性火山来说太低了，低了20至40倍或更多。1976年阿拉斯加奥古斯丁火山喷发的火山灰脱气释放了525 × 106公斤氯（-40%），其中82 × 106至175 × 106公斤可能以氯化氢的形式喷射到平流层。平流层的贡献相当于1975年世界工业生产的氟碳化合物中氯的17%至36%。
Earlier estimates of the chlorine emission from volcanoes, based upon evaluations of the preeruption magmatic chlorine content, are too low for some explosive volcanoes by a factor of 20 to 40 or more. Degassing of ash erupted during 1976 by Augustine Volcano in Alaska released 525 x 106 kilograms of chlorine (� 40 percent), of which 82 x 106 to 175 x 106 kilograms may have been ejected into the stratosphere as hydrogen chloride. This stratospheric contribution is equivalent to 17 to 36 percent of the 1975 world industrial production of chlorine in fluorocarbons.