The Kallisti Limnes, carbon dioxide-accumulating subsea pools.
The Kallisti Limnes, carbon dioxide-accumulating subsea pools.
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DOI：
10.1038/srep12152
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发表时间：
2015-07-16
影响因子：
4.6
通讯作者：
Caldera Science Team
中科院分区：
文献类型：
--
作者：
Camilli R;Nomikou P;Escartín J;Ridao P;Mallios A;Kilias SP;Argyraki A;Caldera Science Team
据推测，浅海热液喷口自然释放的二氧化碳会混入水柱，而不会积聚到分层的海底水池中。我们提出了新发现的浅海底池位于希腊爱琴海南部的圣托里尼火山破火山口内，积累了地质水库的二氧化碳排放量。这类海底热液池含有高浓度的二氧化碳，提供了来自海底以下释放的浅层海底二氧化碳积累的直接证据。从这些酸性池内采集的样品没有钙化生物，池间的通道结构表明重力驱动的流动，这表明该地点海底释放的CO2可能优先影响底栖生态系统。这些自然形成的海底碳池可以提供早期火山活动的诊断指标，并可作为研究海底碳捕获和储存地点的二氧化碳泄漏和海底积累的模拟物。
Natural CO2 releases from shallow marine hydrothermal vents are assumed to mix into the water column, and not accumulate into stratified seafloor pools. We present newly discovered shallow subsea pools located within the Santorini volcanic caldera of the Southern Aegean Sea, Greece, that accumulate CO2 emissions from geologic reservoirs. This type of hydrothermal seafloor pool, containing highly concentrated CO2, provides direct evidence of shallow benthic CO2 accumulations originating from sub-seafloor releases. Samples taken from within these acidic pools are devoid of calcifying organisms, and channel structures among the pools indicate gravity driven flow, suggesting that seafloor release of CO2 at this site may preferentially impact benthic ecosystems. These naturally occurring seafloor pools may provide a diagnostic indicator of incipient volcanic activity and can serve as an analog for studying CO2 leakage and benthic accumulations from subsea carbon capture and storage sites.