Renewal of the Drake Passage High Density XBT/XCTD Program

该项目是对德雷克海峡上层海洋结构的季节变化和长期变化的研究。 它由美国南极计划的研究船劳伦斯M号在每次穿越时获得的高密度切片组成。古尔德，使用一次性深海温度计，辅以一次性电导率-温度-深度探头。 这些资料将继续导致建立一个高质量的数据库，用以研究季节信号的强度和穿透深度、与大气作用力的联系以及年际变化的影响，例如与南极绕极波有关的影响。 南极绕极流连接着大西洋、太平洋和印度洋的环流，为海洋间的热量和盐分异常传递提供了一条全球通道。 德雷克海峡是太平洋和南大西洋/印度洋系统之间进行财产交换的一个方便而狭窄的咽喉点。 这些部分将补充自1996年9月以来获得的大约40个部分。 探测器由船上的科研人员在每次巡航时发射。 ***

This project is a study of the seasonal variability and long-term change of the upper ocean structure of the Drake Passage. It consists of high density sections obtained on each crossing by the U.S. Antarctic Program's research vessel Laurence M. Gould, using expendable bathythermographs, supplemented by expendable conductivity-temperature-depth probes. This information will continue to lead to the establishment of a high quality data base with which to study the magnitude and depth of penetration of the seasonal signals, connections to atmospheric forcing, and the effects of interannual variations such as those associated with the Antarctic Circumpolar Wave. The Antarctic Circumpolar Current links the circulation of the Atlantic, Pacific, and Indian Oceans, providing a global pathway for the interocean transfer of heat and salt anomalies. Drake Passage is a convenient narrow choke point for property exchange between the Pacific and the South Atlantic/Indian Ocean system. These sections will supplement the approximately forty sections have been obtained since September 1996. The probes are launched by the scientific shipboard personnel on each cruise. ***