Posteruption chemical evolution of a volcanic caldera lake: Karymsky Lake, Kamchatka. Issue 19 (1st October 2013)

• Record Type: Journal Article
• Authors: Taran, Yuri; Inguaggiato, Salvatore; Cardellini, Carlo; Karpov, Gennady
• Is Part Of: Geophysical research letters. Volume 40:Issue 19(2013:Oct.)
• Page Start: 5142
• Page End: 5146
• Publication Date: 2013-10-01
• Subjects: Geophysics -- Periodicals; Planets -- Periodicals; Lunar geology -- Periodicals; 550
• DOI: 10.1002/grl.50961
• Languages: English
• ISSNs: 0094-8276

Abstract

<abstract abstract-type="main"> <title> <x xml:space="preserve">Abstract</x> </title> <p>[1] The 1996 short‐lived subaqueous eruption at the Karymsky caldera lake suddenly changed the composition of the lake water. The lake, with a surface area of ~10 km² and a volume of ~0.5 km³, became acidic, increased its salinity to ~1000 mg/kg, and became dominated by SO₄²⁻ and Ca²⁺. Since the eruption, the lake chemistry has evolved in a predictable manner described by simple box model. As a result of dilution by incoming SO₄‐Ca‐Mg‐poor water, SO₄, Ca, and Mg concentrations follow a simple exponential decrease with a characteristic time close to the residence time of the lake. Na, K, and Cl decrease relatively significantly slower, indicating a continuing input of these constituents into the lake that was initiated during the eruption. Thus, the dynamics of two groups of lake water solutes can be predicted by a simple box model for water and solute mass balance.</p> </abstract>