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利用我国第九次南极考察队获得的德雷克海峡地区水温资料,并结合国外锚碇浮标和测流资料,分析和研究了德雷克海峡绕极流和锋面的时间变化和空间变化。研究表明,德雷克海峡绕极流的流速共有3个强流区,就德雷克海峡上层海流的空间变化而言,以亚南极锋附近的海流最强,流向和流速也最稳定少变。德雷克海峡深层海流的空间分布特点与上层海流的空间分布特点不同,深层流速明显减弱,且稳定性差。德雷克海峡绕极流有着明显的时间变化,但是这种时间变化因地而异·极锋附近在冬春季节是稳定的深层北向流,它与南半球高纬度的冬、春季节的Ventila-tion过程有着密切的关系,德雷克海峡上层水温的空间分布具有明显的锋面分布特征。水温在德雷克海峡的高纬度区更加稳定少变,而极锋附近深层海水温度随时间的变化最大。
Based on the data of water temperature in the Drake Strait obtained by the 9th Antarctic expedition team and the data of buoy and flow measured by the anchorage in foreign countries, the temporal and spatial changes of the polar current and frontal surface in the Drake Strait are analyzed and studied. The study shows that there are three strong flow areas in the Drake Strait around the current, and the strongest current in the vicinity of the sub-Antarctic front in terms of the spatial variation of the upper currents in the Drake Strait. . The spatial distribution characteristics of the deep current in the Drake Strait are different from the spatial distribution characteristics of the upper current. The deep flow rate is obviously weakened and the stability is poor. Drake Strait around the polar current has obvious time changes, but this time varies from place to place near the polar front in winter and spring is a stable deep northward flow, and its high latitudes in the southern hemisphere winter and spring Ventila- tion process is closely related to the distribution of the upper water temperature in the Drake Strait has a clear frontal distribution. The water temperature is more stable and less variable in the high latitudes of the Drake Strait while the temperature of deep seawater near Polar Fold changes most with time.