新华社"雪龙"号2月19日电（记者顾天成）北京时间19日，随着最后一个声学释放器从罗斯海成功回 收，中国第42次南极考察"雪龙"号大洋队完成了本航次大洋调查任务。 作业期间，一批新技术新装备得到应用。布放的极地生态潜标搭载的国产声学、光学探测模块，能够实 现对冰下海洋的长时间序列连续观测。"我们应用自主改进后的新型磷虾拖网发现，其多层设计有效提 升了捕获量，并有利于掌握不同水层磷虾分布情况。"大洋队队员、艉甲板作业组组长李帅说。 接下来，"雪龙"号大洋队队员、秦岭站度夏队员将乘坐"雪龙"号前往澳大利亚霍巴特港，转乘飞机返回 国内。"雪龙"号将前往中山站执行后续任务。 据"雪龙"号大洋队队长张海峰介绍，本航次，"雪龙"号大洋队在南极阿蒙森海、罗斯海及邻近海域开展 了水文环境、海洋生物、海洋化学、大气环境等多学科综合调查，并在此期间对企鹅栖息地开展调查。 1月24日至2月19日，"雪龙"号大洋队克服风雪、大雾、涌浪和严重冰情等不利天气因素，在目标海域开 展大洋调查。"我们以海洋生态系统关键要素调查为重点，开展了锚碇潜标回收布放、新型磷虾拖网应 用、抛弃式温盐深仪观测等作业。"张海峰说。 本航次，"雪龙"号大洋队累 ...

Core Insights - The China Polar Research Center has announced procurement intentions for 21 items of scientific instruments, with a total budget of 96.53 million yuan, expected to be procured by May 2026 [1][2]. Procurement Overview - The procurement includes various advanced instruments such as: - Deep-water multi-beam systems - Underwater autonomous geophysical measurement platforms - Surface gravity meters - Near-bottom gravity meters [2]. Detailed Procurement List - The procurement list includes: - Portable temperature and salinity depth gauge: 6.8 million yuan - Large-profile acoustic Doppler current profiler: 16 million yuan - Pressure-resistant buoy: 4 million yuan - Acoustic Doppler current profiler (ADCP 300k): 35 million yuan - Drifting wave buoy: 14.4 million yuan - Acoustic mooring anchor system: 19 million yuan - Acoustic release device: 16 million yuan - Acoustic detection for plankton and fish abundance: 13 million yuan - Towed sound source: 48 million yuan - Ice-based deep-water profile buoy: 44 million yuan - VLF monitoring device: 10 million yuan [4][5]. Organizational Background - The China Polar Research Center, established in 1989 and renamed in 2003, is the only institution in China dedicated to polar scientific research. It manages multiple Antarctic stations and provides logistical support for research activities [6]. - The center conducts fundamental scientific research across various fields, including glaciology, oceanography, ecology, and space physics, and manages national polar archives and scientific data centers [6].