A Newly Discovered Hawaiian Volcano on Kaena Ridge

最近绘制的海底地图以及对瓦胡岛附近海底火山岩的重力和地球化学分析表明，沿着海底的Kaena Ridge可能有一座火山。如果得到证实，新发现的大楼将提供有关夏威夷岩浆活动及其随时间演变的基本新信息。它还将有助于解释构成夏威夷岛链的重叠火山建筑物的地球物理数据。为了追求这一新发现，该项目带着学生/教师运营的海洋邮轮返回该地区，该邮轮使用远程操作工具从海底关键位置收集更多重力数据和现场火山岩样本。返回实验室的样品将被分析主要和痕量元素以及关键的放射性同位素(Nd、Sr、Pb)。样品将使用K-Ar和Ar-Ar方法进行测年。这项工作的更广泛影响包括与法国科学家的国际合作，以及对学生的研究和教育的紧密结合。在这个项目中，学生们参与到各个层面，从项目规划到参加海洋巡游，到进行地球化学工作，再到在国家会议上发表演讲。

Recent mapping of the seafloor along with gravity and geochemical analyses of seafloor volcanic rocks off the Island of Oahu suggests that there may be a volcano along the submarine Kaena Ridge. If validated, the newly discovery edifice would provide fundamental new information about Hawaiian magmatic activity and its evolution in time. It will also help in the interpretation of geophysical data of the overlapping volcanic edifices that make up the Hawaiian Island chain. The project pursues this new discovery by returning to the area with a student/faculty-run oceanographic cruise that uses a remotely operated vehicle to collect more gravity data and spot-sample volcanic rocks from critical locations on the seafloor. Samples returned to the lab will be analyzed for major and trace elements and key radiogenic isotopes (Nd, Sr, Pb). Samples will be dated using K-Ar and Ar-Ar methods. Broader impacts of the work include international collaboration with French scientists and strong integration of research and education for students. In this project, students are engaged at all levels from project planning to participating in an oceanographic cruise, to carrying out the geochemical work, to making presentations at national meetings.