南极普里兹湾北部深海沉降颗粒物的垂直通量研究I.沉积物捕获器的误差来源及相关建议

捕获器是目前研究沉降颗粒物的生物地球化学循环最直接的手段。捕获器不仅能够定量不同时间、空间以及不同深度的颗粒物通量 ,而且还能够收集到进行物理、化学分析的样品。但是尽管捕获器被广泛地认为是海洋中的“颗粒物测量器” ,然而关于捕获器的绝对精确度仍存在异议。本文综合了当前的众多研究 ,对有关捕获器偏差的误差来源及相关建议做了一定的总结。重点讨论了一些大家关注的诸如“swimmers”的去除以及样品保护的问题

STUDY OF VERTICAL PARTICLE FLUXES IN THE DEEP OCEAN OF THE NORTH OPEN SEA OF PRYDZ BAY,ANTARCTIC I:SOURCES OF ERRORS IN SEDIMENT TRAP MEASUREMENT AND RECOMMENDATIONS

Much of the current understanding of biogeochemical processes can be traced directly to data from sediment traps. Traps are used to quantify not only the flux patterns with space, time and depth, but also to serve as collectors for sampling sinking particles for chemical and physical analysis. While traps are widely relied upon to serve as accurate “particle gauges” in the oceans, there are different opinions about the absolute accuracy of traps. In this paper, based on the current researches, we report the results about the sources of errors in sediment trap measurements and corresponding recommendations, and focus primarily on the problems of “swimmers” removal methods and conservation of particles.