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

私家侦探们建议对中赤道太平洋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将主要生物化学物质（脂质、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、积累和保存速率相协调，使用超过100种单独的有机化合物。主要问题是：1)赤道太平洋表面粒子的有机成分所反映的动力学是什么？2)地表水中产生的不同生物化学物质的哪些部分到达深海并在沉积物-水界面积聚？3)下伏沉积物中不同有机物的相对反应性如何？4)生物化学分布是否随研究样带不同沉积物类型的无机组成而明显不同？为了解决这些问题，P.I:s将通过原位泵送取样悬浮颗粒，使用我们新的游泳者隔离陷阱取样下沉颗粒，以及与其他EQPAC调查人员协调取样，从样带和时间序列站的箱形岩心中取样底部沉积物。

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.