Installation of a Thermistor Array at ODP Site 642 to Document and Monitor Bottom Water Temperature Variations Through Time

这个为期5年的项目将于2005年初在挪威ODP站点642附近的一个新井眼中安装一个热敏电阻阵列，作为IODP平台非立管平台计划的一部分，该井眼将监测温度，直到2010年重新访问该井眼。该项目是有史以来第一次在海洋井眼中安装长期温度监测装置，有可能深入了解北大西洋这部分地区过去100年来的底部水温历史。选定的研究地点的一个关键优势是它靠近海洋气象站迈克，该气象站收集了现有最长的海底水温和盐度变化时间序列。在大陆环境下进行的类似的长期井下温度研究，通过分析与地表温度扰动相关的向下传播的异常，提高了对气候变化的认识。该项目不仅将加强国际海洋发展计划的可用工具，而且还将加强海底海洋观测倡议的可用工具。

This 5-year project will install a thermistor array in a new borehole to be drilled on the Norwegian margin near ODP Site 642 in early 2005 as part of a scheduled leg aboard the non-riser IODP platform and will monitor temperatures until the borehole is revisited in 2010. The project represents the first-ever long-term temperature monitoring installation in an oceanic borehole and has the potential to yield insight into the bottom water temperature history of this part of the North Atlantic over the past 100 years. A key advantage of the chosen study site is its proximity to Ocean Weather Station Mike, which has collected the longest existing time series of bottom water temperature and salinity variations. Similar long-term downhole temperature studies in continental settings have advanced understanding of climate change through the analysis of downward propagating anomalies associated with perturbations of surface temperature. The project will enhance the tools available not only for IODP, but also for seafloor ocean observatories initiatives.