DOI: 10.1002/2014GL061808
论文题名: New lava lake at Nyamuragira volcano revealed by combined ASTER and OMI SO<inf>2</inf> measurements
作者: Campion R.
刊名: Geophysical Research Letters
ISSN: 0094-9623
EISSN: 1944-9354
出版年: 2014
卷: 41, 期: 21 起始页码: 7485
结束页码: 7492
语种: 英语
英文关键词: ASTER
; lava lake
; Nyamuragira
; OMI
; remote sensing
; SO2 emission rates
Scopus关键词: Lakes
; Remote sensing
; Sulfur dioxide
; Volcanoes
; Advanced spaceborne thermal emission and reflection radiometer
; ASTER
; High-time resolution
; Nyamuragira
; OMI
; Ozone monitoring instruments
; Satellite measurements
; SO2 emissions
; Ultraviolet spectrometers
; ASTER
; caldera
; lava tube
; magma chamber
; sulfur dioxide
; volcanic eruption
; Democratic Republic Congo
; Nord Kivu
; Nyamuragira
英文摘要: We report recent satellite measurements of the SO2 emissions from the Virunga Volcanic Group (VVG), which comprises the very active Nyamuragira and Nyiragongo volcanoes. Combining high time resolution data from the UV-operating OMI (Ozone Monitoring Instrument) with high ground resolution data from the IR-operating ASTER (Advanced Spaceborne Thermal Emission and Reflection radiometer), we show that (1) the SO2 emissions from the VVG have increased severalfold since the end of the last eruption of Nyamuragira. (2) Nyamuragira, which used to have very low intereruptive emissions of SO2 before this eruption, is now contributing to 60 to 90% of the combined emissions measured by OMI. Considering the eruptive history of Nyamuragira, the evidence from previous research for the existence of a shallow magma chamber, and the detection of isolated thermal anomalies since April 2014, we conclude that a deep-seated lava lake has formed in the N pit of Nyamuragira's caldera. Key Points We measured SO2 fluxes from Virunga volcanoes using spaceborne sensorsCombining ASTER and OMI to resolve temporally and spatially the emission sourcesHigh gas fluxes and thermal anomalies prove a lava lake formed at Nyamuragira ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84912098684&doi=10.1002%2f2014GL061808&partnerID=40&md5=ee7d920bda90f1946639cc9edd9371c5
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/6887
Appears in Collections: 气候减缓与适应
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作者单位: Instituto de Geofísica, Universidad Nacional Autõnoma de México, Mexico City, Mexico
Recommended Citation:
Campion R.. New lava lake at Nyamuragira volcano revealed by combined ASTER and OMI SO<inf>2</inf> measurements[J]. Geophysical Research Letters,2014-01-01,41(21).