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Studia Geophysica et Geodaetica - 相似文献
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《Marine pollution bulletin》1987,18(4):195-196
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A. D. Gilbert 《地球物理与天体物理流体动力学》2013,107(3-4):309-311
Abstract Edited by J.-P. Zhan and J. Zinn-Justin, Elsevier, 1993. XXIV+ 615 pp., US$248.50, hardbound (ISBN-0-444-81797-2). 相似文献
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Shinji Ohsawa Kenji Sugimori Hiroshi Yamauchi Tomoyuki Koeda Hiroaki Inaba Yoshihisa Kataoka Tsuneomi Kagiyama 《Bulletin of Volcanology》2014,76(5):1-10
A drastic change in lake water color from blue-green to brown was observed in the summit crater lake of Mt. Shinmoe-dake, Kirishima Volcano about 8 months after its 2008 eruption. The color change lasted for about 2 months (April–June 2009). The discoloration was attributed to a brownish color suspension that had formed in the lake water. X-ray fluorescence and Fourier transform infrared analyses of a sample of the suspension identified schwertmannite (Fe8O8(OH)6(SO4)). A cultivation test of iron-oxidizing bacteria for the sampled lake water with lakebed sediment revealed that the crater lake hosts iron-oxidizing bacteria, which likely participated in schwertmannite formation. We suggest that pyrite (FeS2) provided an energy source for the iron-oxidizing bacteria since the mineral was identified in hydrothermally altered tephra ejected by the August 2008 eruption. From consideration of these and other factors, the brownish discoloration of the summit crater lake of Mt. Shinmoe-dake was inferred to have resulted from a combined volcanic–microbial process. 相似文献
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