We found a match
Your institution may have rights to this item. Sign in to continue.
- Title
Globally Significant CO2 Emissions From Katla, a Subglacial Volcano in Iceland.
- Authors
Ilyinskaya, Evgenia; Mobbs, Stephen; Burton, Ralph; Burton, Mike; Pardini, Federica; Pfeffer, Melissa Anne; Purvis, Ruth; Lee, James; Baguitte, Stephane; Brooks, Barbara; Colfescu, Ionna; Petersen, Gudrun Nina; Wellpott, Axel; Bergsson, Baldur
- Abstract
Volcanoes are a key natural source of CO2, but global estimates of volcanic CO2 flux are predominantly based on measurements from a fraction of world's actively degassing volcanoes. We combine high‐precision airborne measurements from 2016 and 2017 with atmospheric dispersion modeling to quantify CO2 emissions from Katla, a major subglacial volcanic caldera in Iceland that last erupted 100 years ago but has been undergoing significant unrest in recent decades. Katla's sustained CO2 flux, 12–24 kt/d, is up to an order of magnitude greater than previous estimates of total CO2 release from Iceland's natural sources. Katla is one of the largest volcanic sources of CO2 on the planet, contributing up to 4% of global emissions from nonerupting volcanoes. Further measurements on subglacial volcanoes worldwide are urgently required to establish if Katla is exceptional, or if there is a significant previously unrecognized contribution to global CO2 emissions from natural sources.
- Subjects
ICELAND; VOLCANOES; CALDERAS; VOLCANIC plumes; MAGNITUDE (Mathematics); ATMOSPHERIC models
- Publication
Geophysical Research Abstracts, 2019, Vol 21, p1
- ISSN
1029-7006
- Publication type
Article