Immobilisation dose rates for Weddell seals during expedition FIL2021

Weddell seals (Leptonychotes weddellii) were immobilised during expedition PS124 (2021) for the purpose of deployments with satellite transmitters. The deployments (n=10) were located in the Filchner-Outflow-System (FOS), southern Weddell Sea. The seals were captured along the ships' tracks during ahead flights of the board helicopter and immobilised and instrumented on pack ice with Argos-linked (CLS, Toulouse, France) satellite-relayed dive loggers combined with CTD's (CTD-SRDLs, Sea Mammal Research Unit, UK) to investigate their ranging and foraging behaviour in the context of oceanographic features.

在2021年的PS124科考航次中，为部署卫星发射装置，科研人员对威德尔海豹（Leptonychotes weddellii）实施了麻醉固定。本次共完成10台设备部署，部署点位位于威德尔海南部的菲尔希纳外流系统（Filchner-Outflow-System，FOS）。科研人员通过舰载直升机的前置侦察飞行沿航迹捕获目标海豹，随后在浮冰上对其进行麻醉固定，并安装与Argos系统（CLS，法国图卢兹）对接的卫星中继潜水记录仪，该设备集成了温盐深卫星中继数据记录仪（CTD-SRDLs，英国海洋哺乳动物研究单元，Sea Mammal Research Unit, UK），旨在结合海洋学特征，研究威德尔海豹的活动范围与觅食行为。