At surface behaviour of adult male southern elephant seals from King George Island from expedition JUB2000

Adult male southern elephant seals instrumented in 2000 on King George Island (n = 13), travelled both to the north (doi:10.1594/PANGAEA.231580, doi:10.1594/PANGAEA.231585) and to the east (doi:10.1594/PANGAEA.231571, doi:10.1594/PANGAEA.231579, doi:10.1594/PANGAEA.261708, doi:10.1594/PANGAEA.261709, doi:10.1594/PANGAEA.261710, doi:10.1594/PANGAEA.261711) of the Antarctic Peninsula. Five males (doi:10.1594/PANGAEA.231571, doi:10.1594/PANGAEA.231579, doi:10.1594/PANGAEA.231580, doi:10.1594/PANGAEA.261710, doi:10.1594/PANGAEA.231585) remained within 500 km of the island and focusing movements in the Bransfield Strait and around the Antarctic Peninsula. Sea-surface temperatures encountered by these animals showed little variation and they seemed to move about irrespective of sea ice cover, but frequented areas of shallow bathymetry. Three males (doi:10.1594/PANGAEA.261708, doi:10.1594/PANGAEA.261709, doi:10.1594/PANGAEA.261711) moved as far as 75°S to the east of the peninsula, into the Weddell Sea, with maximum distances of more than 1500 km from King George Island. They travelled into the Weddell Sea along the western continental shelf break until they reached the region of the Filchner Trough outflow. Here the bathymetry consists of canyons and ridges which support the intensive mixing between the warm saline waters of the Weddell Gyre and the very cold outflow waters with Ice Shelf water ingredients at the Antarctic Slope Front. Another five data sets were shorter then 40 days, and excluded from analyses (doi:10.1594/PANGAEA.231568, doi:10.1594/PANGAEA.231576, doi:10.1594/PANGAEA.231572, doi:10.1594/PANGAEA.231577, doi:10.1594/PANGAEA.264710). A computer animation was developed to visualize the animal movements in relation to the extent and concentration of sea ice (doi:10.1594/PANGAEA.509404). The need for re-instrumentation of adult males from King George Island is highlighted to investigate whether males continue to travel to similar areas and to obtain higher resolution data.

2000年在乔治王岛（King George Island）佩戴追踪设备的成年雄性南象海豹（southern elephant seals）共计13头（n = 13），其活动范围覆盖南极半岛（Antarctic Peninsula）以北海域（对应数据集DOI：10.1594/PANGAEA.231580、10.1594/PANGAEA.231585）与以东海域（对应数据集DOI：10.1594/PANGAEA.231571、10.1594/PANGAEA.231579、10.1594/PANGAEA.261708、10.1594/PANGAEA.261709、10.1594/PANGAEA.261710、10.1594/PANGAEA.261711）。

其中5头雄性海豹（对应数据集DOI：10.1594/PANGAEA.231571、10.1594/PANGAEA.231579、10.1594/PANGAEA.231580、10.1594/PANGAEA.261710、10.1594/PANGAEA.231585）的活动区域始终距乔治王岛500公里以内，活动集中于布兰斯菲尔德海峡（Bransfield Strait）及南极半岛周边海域。此类海豹遭遇的海表温度波动极小，其移动似乎不受海冰覆盖状态影响，但常活动于浅海地形区域。

另有3头雄性海豹（对应数据集DOI：10.1594/PANGAEA.261708、10.1594/PANGAEA.261709、10.1594/PANGAEA.261711）向东行进至南极半岛以南75°S的威德尔海（Weddell Sea），距乔治王岛的最大移动距离超过1500公里。它们沿南极半岛西部大陆架陆坡向威德尔海行进，直至菲尔希纳海槽（Filchner Trough）溢流区。该区域的海底地形以峡谷与海岭为主，可驱动威德尔环流（Weddell Gyre）的暖盐水体与南极坡锋（Antarctic Slope Front）处含冰架水成分的极冷溢流水体发生强烈混合。

另有5组数据集时长不足40天，未纳入本次分析（对应数据集DOI：10.1594/PANGAEA.231568、10.1594/PANGAEA.231576、10.1594/PANGAEA.231572、10.1594/PANGAEA.231577、10.1594/PANGAEA.264710）。

研究人员开发了计算机动画（computer animation）以可视化海豹活动与海冰范围、浓度的关联关系（对应数据集DOI：10.1594/PANGAEA.509404）。本研究强调，需对乔治王岛的成年雄性南象海豹重新佩戴追踪设备，以探究雄性海豹是否会持续前往相似海域，并获取更高分辨率的观测数据。