%0 Dataset %T The 25th Chinese Antarctic Expedition to Emery Ice Lake Airdropped XCTD Observation Raw Data (2008) %J National Cryosphere Desert Data Center %I National Cryosphere Desert Data Center(www.ncdc.ac.cn) %U http://www.ncdc.ac.cn/portal/metadata/19e1b3b0-0de2-11e6-a761-5cc5d45ad3ae %W NCDC %R 10.12072/ncdc.azs.db3009.2023 %A Hu hongqiao %K Emory;Polar;South Pole;Salinity;Ice Lake %X This data shows a helicopter hovering over the ice lake on the west side of the leading edge of the Emery Ice Shelf, 20 meters above the sea surface. Launch three XCTD probes from the helicopter cabin at three stations to obtain temperature and salinity profile data as deep as the seabed. This dataset is the original data of XCTD airdropped observations from Emery Ice Lake during China's 25th Antarctic Expedition in 2008. XCTD (Expendable Conductivity Temperature and Depth System), also known as abandoned seawater temperature and salinity depth profiling instrument, is a marine scientific research instrument that can quickly obtain temperature and salinity profile data of the sea area. It has the characteristics of navigation, real-time, large-area, low-cost, and high-precision measurement. It consists of a launch device, a probe, a data transmission enameled wire (between the probe and the launch device), and a data collector. The probe is launched into the water by a shipborne launch device, and real-time collection of seawater temperature and conductivity signals is carried out. The data signals are transmitted to the data acquisition board through a data transmission enameled wire (copper wire) and enter the computer. After automatic processing by the computer, the corresponding temperature and depth data data (curve) are obtained.