Search results for " volcanic lake"

showing 3 items of 3 documents

Intense magmatic degassing through the lake of Copahue volcano, 2013–2014

2015

Here we report on the first assessment of volatile fluxes from the hyperacid crater lake hosted within the summit crater of Copahue, a very active volcano on the Argentina-Chile border. Our observations were performed using a variety of in situ and remote sensing techniques during field campaigns in March 2013, when the crater hosted an active fumarole field, and in March 2014, when an acidic volcanic lake covered the fumarole field. In the latter campaign, we found that 566 to 1373 t d -1 of SO 2 were being emitted from the lake in a plume that appeared largely invisible. This, combined with our derived bulk plume composition, was converted into flux of other volcanic species (H 2 O ~ 1098…

Atmospheric Science010504 meteorology & atmospheric sciencesEarth scienceGeochemistrySoil ScienceAquatic ScienceOceanography010502 geochemistry & geophysics01 natural sciencesCiencias de la Tierra y relacionadas con el Medio AmbienteAtmosphereVulcanologíaFlux (metallurgy)Impact craterGeochemistry and PetrologyCrater lakeEarth and Planetary Sciences (miscellaneous)COPAHUECopahue volcanic lake degassingGeophysicCiencias Exactas y NaturalesChemical compositionWater Science and Technology0105 earth and related environmental sciencesvolcanic lakegeographyMagmatic gasesgeography.geographical_feature_categoryEcologyCopahuePaleontologydegassingForestryFumarolePlumeDEGASSINGGeophysicsVolcano13. Climate actionSpace and Planetary ScienceEarth-Surface ProcesseCopahue volcanovolatile flux from crater lakeCIENCIAS NATURALES Y EXACTASGeologyVOLCANIC LAKEJournal of Geophysical Research: Solid Earth
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Trace elements in Mirror of Venus lake waters (Pantelleria Island, Italy)

2016

Mirror of Venus lake (MV) is a small (1.5 km2) endorheic alkaline lake located in a calderic depression on the northern side of Pantelleria Island (South Italy), a quiescent Pleistocenic stratovolcano located in the NW-SE trending continental rift developed between North Africa and Sicily. The lake, sub-squared in shape (around ca 450 m long and ca 350 m wide and 13 m depth) water input contribution is essentially from the thermal springs situated on its shores (Q = 0.1 l.s-1) and from meteoric waters. A total volume of 580.000 m3 has been estimated in June 2014. CO2 flux measurements made with a floating accumulation chamber in 2014 on the MV surface (both diffusive and bubbling CO2) highl…

Pantelleria Trace elements volcanic lakeSettore GEO/08 - Geochimica E Vulcanologia
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Volcanic Lakes in Africa: The VOLADA_Africa 2.0 Database, and Implications for Volcanic Hazard

2021

Volcanic lakes pose specific hazards inherent to the presence of water: phreatic and phreatomagmatic eruptions, lahars, limnic gas bursts and dispersion of brines in the hydrological network. Here we introduce the updated, interactive and open-access database for African volcanic lakes, country by country. The previous database VOLADA (VOlcanic LAke DAta Base, Rouwet et al., Journal of Volcanology and Geothermal Research, 2014, 272, 78–97) reported 96 volcanic lakes for Africa. This number is now revised and established at 220, converting VOLADA_Africa 2.0 in the most comprehensive resource for African volcanic lakes: 81 in Uganda, 37 in Kenya, 33 in Cameroon, 28 in Madagascar, 19 in Ethiop…

geographyVolcanic hazardsgeography.geographical_feature_categoryRiftDatabaseLake NyosScienceLimnologyQVolcanismmaarcomputer.software_genreMaarhazard assessmentVolcanoAfricaAfrica volcanic lakes maar Lake Nyos database hazard assessmentPhreatomagmatic eruptionGeneral Earth and Planetary SciencesScoriacomputervolcanic lakesdatabaseFrontiers in Earth Science
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