Organic Geochemical Flux Studies in the Equatorial Pacific Using Swimmer Excluding Rotator Traps

P.I.：S提议对中赤道太平洋的颗粒物通量进行有机地球化学调查。这项研究应该允许他们使用100多种单独的有机化合物，将主要生物化学物质(脂类、氨基酸、色素和碳水化合物)的水柱产生和下沉通量与相应的沉积物输送、积累和保存率进行协调。主要问题是：1)赤道太平洋表层颗粒的有机成分反映了什么动力学？2)表层水中产生的不同生物化学物质中有哪些部分到达深海并聚集在沉积物-水界面？3)底层沉积物中不同有机物的相对反应性是什么？4)生物化学分布与研究样带不同沉积物类型的无机成分有显著差异吗？为了解决这些问题，P.I.：S将通过现场抽水采样悬浮颗粒，使用我们新的泳者排除陷阱下沉颗粒，并与其他EQPAC调查人员合作，从横断面和时间序列站的箱形岩芯中采集海底沉积物。

The P.I.:s propose to conduct an organic geochemical investigation of the flux of particulate matter in the Central Equatorial Pacific (EQPAC). This study should allow them to reconcile water column production and sinking fluxes of the major biochemicals (lipids, amino acids, pigments, and carbohydrates) with the corresponding sediment deliver, accumulation and preservation rates, using well over 100 individual organic compounds. Major questions are: 1) What are the dynamics of particles in the surface Equatorial Pacific as reflected by their organic constituents? 2) What fractions of the different biochemicals produced in the surface waters reach the deep ocean and are accumulated at the sediment-water interface? 3) What are the relative reactivities of different organic substances in the underlying sediments? 4) Do biochemical distributions differ appreciably with the inorganic composition of the various sediment types along the study transect? To address these questions the P.I.:s will sample suspended particles by insitu pumping, sinking particles using our new swimmer-exclusion traps, and bottom sediments from box cores at transect and time-series stations in coordination sampling with other EQPAC investigators.