| 词条 | Multi-component gas analyzer system |
| 释义 |
A multi-component gas analyzer system (Multi-GAS) is an instrument package used to take real-time high-resolution measurements of volcanic gas plumes.[1] A Multi-GAS package includes an infrared spectrometer for CO2, two electrochemical sensors for SO2 and H2S, and pressure–temperature–humidity sensors, all in a weatherproof box weighing approximately 3 kg,[2] as well as radio transmitters to transmit data to remote locations. The instrument package is portable, and its operation and data analysis are simple enough to be conducted by non-specialists.[3] Multi-GAS instruments have been used to measure volcanic gas plumes at Mount Etna, Stromboli, Vulcano Italy, Villarrica (volcano) Chile, Masaya Volcano Nicaragua, Mount Yasur and Ambrym Vanuatu, Miyake-jima and Mount Asama Japan, Soufrière Hills Montserrat, with permanent installations at Etna and Stromboli.[4] Multi-GAS measurements of CO2/SO2 ratios can allow detection of the pre-eruptive degassing of rising magmas, improving prediction of volcanic activity.[1] References1. ^1 {{cite journal|url=http://geology.geoscienceworld.org/content/35/12/1115/|title=Forecasting Etna eruptions by real-time observation of volcanic gas composition|journal=Geology|volume=35|issue=12|pages=1115|doi=10.1130/G24149A.1|year=2007|last1=Aiuppa|first1=Alessandro|last2=Moretti|first2=Roberto|last3=Federico|first3=Cinzia|last4=Giudice|first4=Gaetano|last5=Gurrieri|first5=Sergio|last6=Liuzzo|first6=Marco|last7=Papale|first7=Paolo|last8=Shinohara|first8=Hiroshi|last9=Valenza|first9=Mariano}} {{geology-stub}}2. ^{{cite journal|title=Chemical mapping of a fumarolic field: La Fossa Crater, Vulcano Island (Aeolian Islands, Italy) | doi=10.1029/2005GL023207 | bibcode=2005GeoRL..3213309A|volume=32| issue=13 | pages=L13309 |journal=Geophysical Research Letters|last1 = Aiuppa|first1 = A.| last2=Federico | first2=C. | last3=Giudice | first3=G. | last4=Gurrieri | first4=S. | year=2005 }} 3. ^{{cite journal|url=http://www.sciencedirect.com/science/article/pii/S0377027304004238/|title=A new technique to estimate volcanic gas composition: plume measurements with a portable multi-sensor system | doi=10.1016/j.jvolgeores.2004.12.004 | volume=143|issue=4 |journal=Journal of Volcanology and Geothermal Research|pages=319–333|date=2005-05-30 |last1=Shinohara |first1=Hiroshi }} 4. ^{{cite web|url=https://www.cambridge.org/core/books/volcanism-and-global-environmental-change/volcanic-gas-monitoring/178D65AE5878B26882C086C3C01710D7/core-reader|title=Volcanic gas monitoring, Ch 6 in Volcanism and Global Environmental Change|date=January 2015}} 2 : Scientific instruments|Volcanology |
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