Geochemical survey of Levante Bay, Vulcano Island (Italy), a natural laboratory for the study of ocean acidification
Geochemical survey of Levante Bay, Vulcano Island (Italy), a natural laboratory for the study of ocean acidification
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DOI：
10.1016/j.marpolbul.2013.01.029
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发表时间：
2013-08-30
影响因子：
5.8
通讯作者：
Parello, F.
中科院分区：
文献类型：
--
作者：
Boatta, F.;D'Alessandro, W.;Parello, F.
（意大利）武尔卡诺岛莱万特湾的浅层海底气体喷口每天排放约3.6吨二氧化碳，为研究与海底二氧化碳泄漏和海洋酸化有关的地球化学过程提供了天然实验室。在70多个站位进行了主要理化参数（T、pH和Eh）的测定，采集了40个海水样品进行化学分析。主排气口区的溶解热液气体浓度高，pH值低，氧化还原值为负值，在距离主排气口约400米的地方，所有这些都恢复到正常的海水值。喷口周围的大部分海湾对碳酸钙具有腐蚀性;北岸的海水碳酸盐化学梯度非常适合研究二氧化碳水平长期增加的影响。这条海岸线缺乏有毒化合物（如H2S），并具有碳酸盐饱和状态的梯度。(C)2013爱思唯尔有限公司保留所有权利。
Shallow submarine gas vents in Levante Bay, Vulcano Island (Italy), emit around 3.6t CO2 per day providing a natural laboratory for the study of biogeochemical processes related to seabed CO2 leaks and ocean acidification. The main physico-chemical parameters (T, pH and Eh) were measured at more than 70 stations with 40 seawater samples were collected for chemical analyses. The main gas vent area had high concentrations of dissolved hydrothermal gases, low pH and negative redox values all of which returned to normal seawater values at distances of about 400 m from the main vents. Much of the bay around the vents is corrosive to calcium carbonate; the north shore has a gradient in seawater carbonate chemistry that is well suited to studies of the effects of long-term increases in CO2 levels. This shoreline lacks toxic compounds (such as H2S) and has a gradient in carbonate saturation states. (C) 2013 Elsevier Ltd. All rights reserved.