Field Testing of a New IRS Sediment Trap Designed to ExcludeSwimmers

该提案是GOFS目前长期领先的一个延续。 时间项目，以测试毒药的有效性， 防止有机物分解的防腐剂 收集在沉积物收集器中。 我们已经完成了三个领域 并得出结论，最好的治疗方法 抑制细菌活性也导致了最大的 在通量和有机化学成分方面， 游泳人士请注意 为了排除游泳者，我们设计了一个 一种新颖的锯齿状旋转球时间序列陷阱 能力（IRS）。 我们建议测试这种新的陷阱设计， 华盛顿州达博湾，秋季开花期间，以及夏威夷时间序列 站 问题是：（1）详细 对新IRS收集的材料进行化学分析 沉积物收集器表明，这种设计排除了游泳者， 比传统的开放式集热器更有效的所有尺寸？ 2)游泳者产生的化学制品是否减少了 国税局的设计足以最终允许歧视 在处理过的捕集器中保存不稳定物质和 浮游动物游泳者的加入 3)国税局的陷阱 配备可靠的时间序列二次采样转盘 收集和原位实验？ 4)做国税局和 转盘式（IRSC）圈闭在所有深度都能正常工作 在开阔的海洋里 5)使用IRS陷阱，我们现在可以测量 准确地计算了各种有机物的垂直通量， 整个海洋的分子吗 如果是这样，这些数据是否可以用于 更好地定义粒子动力学和生产力 关系？ 我们预计这个新的陷阱 用于计划中的赤道太平洋GOFS实验， 1991/1992.

This proposal is a continuation of a present GOFS long-lead time project to test the effectiveness of poisons and preservatives on preventing the decomposition of organic matter collected in sediment traps. We have completed three field tests of this question and concluded that the best treatments for inhibiting bacterial activity also resulted in the greatest artifact in both flux and organic chemical composition from swimmers. In order to exclude swimmers, we have designed a novel trap with an indented rotating sphere and time-series capability (IRS). We propose to test this new trap design in Dabob Bay, WA, during fall bloom, and at the Hawaii time-series station. The questions being addressed are: 1) Do detailed chemical analyses of materials collected in the new IRS sediment trap indicate that this design excludes swimmers of all sizes more effectively than conventional open collectors? 2) Are the chemical artifacts resulting from swimmers reduced sufficiently by the IRS design to finally allow discrimination between preservation of labile substances in treated traps and the addition of zooplankton swimmers? 3) Can the IRS traps be fitted with dependable subsampling carousels for time-series collections and in-situ experiments? 4) Do the IRS and carousels-adapted (IRSC) traps perform suitably at all depths in the open ocean? 5) Using IRS traps, can we now measure accurately the vertical fluxes of a wide range of organic molecules throughout the ocean? If so, can these data be used to better define particle dynamics and productivity relationships? We anticipate that this new trap will be ready for use in the planned equatorial Pacific GOFS experiment in 1991/1992.