Chemical and isotopic composition of seawater and waters from thermal spring sites of the Yankicha Island and Kraternaya Bay

A study of chemical and isotopic composition of coastal thermal springs and waters of the Kraternaya Bay, Yankicha Island, revealed that the total mineralization and concentrations of d18O and d2H decrease from the thermal spring site I to V. These waters are of marine origin with various proportions of local meteoric water. Thermal waters of the site VI have considerably altered chemical and isotopic composition due to high temperatures of surrounding rocks. Base temperatures calculated for this area were 130-200°C. Coastal thermal springs affect isotopic composition of water throughout the bay.

针对扬基恰岛（Yankicha Island）克拉特纳亚湾（Kraternaya Bay）沿岸热泉及湾内水体的化学与同位素组成开展的研究显示，总矿化度以及δ¹⁸O、δ²H的浓度从热泉站位I到站位V呈递减趋势。这些水体均源自海水，且混入了不同比例的当地大气降水。站位VI的热泉水体因受周围岩体高温影响，其化学与同位素组成发生了显著改变。该区域计算得到的基础温度为130~200℃。沿岸热泉会对整个海湾内水体的同位素组成产生影响。