气候变化领域集成服务门户(CCPortal): Carbon Dioxide in Taal Volcanic Lake: A Simple Gasometer for Volcano Monitoring

CCPortal

DOI	10.1029/2020GL090884
	Carbon Dioxide in Taal Volcanic Lake: A Simple Gasometer for Volcano Monitoring
	Bernard A.; Villacorte E.; Maussen K.; Caudron C.; Robic J.; Maximo R.; Rebadulla R.; Bornas M.A.A.V.; Solidum R.U.; Jr.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:24
英文摘要	We report here an increase in the amount of carbon dioxide in Taal lake during the year preceding the January 2020 eruption. Starting in February 2019, the CO2 emissions from the lake increased from background value (700 t day−1) to a flux close to 2,400 t day−1 at the time of the eruption. We show that the lake acts as a highly sensitive gasometer where CO2 (aq) reflects the balance between CO2 supplied to the lake (by hot springs) and CO2 lost by diffusion at air-water interface. The lake waters are extremely enriched in dissolved carbon dioxide with pCO2 values as high as 0.35 atm (350,000 ppmV) equivalent to a CO2(aq) of 9.32 mmol l−1. The residence time of CO2 in the lake is around 1 week which allows for fast detection of change in magma degassing and makes carbon dioxide a very promising tool for volcano monitoring. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Air; Hot springs; Lakes; Phase interfaces; Volcanoes; Air water interfaces; Background value; Dissolved carbon dioxide; Fast detections; Magma degassing; Residence time; Volcanic lakes; Volcano monitoring; Carbon dioxide
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169298
作者单位	Laboratoire de Volcanologie, DGES, Université Libre de Bruxelles, Brussels, Belgium; Department of Science and Technology (DOST), Philippines Institute of Volcanology and Seismology (PHIVOLCS), Quezon City, Philippines; ISTerre, Grenoble, France
推荐引用方式 GB/T 7714	Bernard A.,Villacorte E.,Maussen K.,et al. Carbon Dioxide in Taal Volcanic Lake: A Simple Gasometer for Volcano Monitoring[J],2020,47(24).
APA	Bernard A..,Villacorte E..,Maussen K..,Caudron C..,Robic J..,...&Jr..(2020).Carbon Dioxide in Taal Volcanic Lake: A Simple Gasometer for Volcano Monitoring.Geophysical Research Letters,47(24).
MLA	Bernard A.,et al."Carbon Dioxide in Taal Volcanic Lake: A Simple Gasometer for Volcano Monitoring".Geophysical Research Letters 47.24(2020).