Seasonal Changes in Foraminiferal Flux and Shell Chemistry in the Northern North Atlantic

该项目将测量高纬度地区有孔虫生产的季节性。这些样本将在北大西洋和挪威-格陵兰海的沉积物陷阱的时间序列中收集，这些沉积物陷阱位于北大西洋深水形成的现址附近。两年的生产力和贝壳化学（稳定同位素）记录将与地表水水文和化学的实时观测进行比较，以便校准古环境条件的有孔虫记录。北大西洋北部和挪威-格陵兰海的微生物壳将用沉积物捕集器收集两年。在同一时间段内，将测量水的化学成分。研究结果将使研究人员能够将这些水的现代化学成分与地质记录中保存的有孔虫壳的化学成分进行校准。这种校准很重要，因为研究区域是北大西洋深水的形成地点；这些水团在地球气候史上扮演着重要的角色。

The project will measure the seasonality of foraminiferal production at high latitudes. The samples will be collected in a time-series of sediment traps in the North Atlantic and Norwegian-Greenland Sea near the present site of North Atlantic Deep Water formation. A two year record of productivity and shell chemistry (stable isotopes) will be compared to real-time observations of surface water hydrography and chemistry in order to calibrate the foraminiferal record of paleo-environmental conditions. %%% The shells of microscopic organisms in the northern North Atlantic and Norwegian-Greenland Seas will be collected with sediment traps for two years. The chemistry of the water will be measured during the same time period. The results will allow the researchers to calibrate the modern chemistry of these water with the chemistry of foraminiferal shells which are preserved in the geologic record. This calibration is important because the study area is the site of the formation of North Atlantic Deep Water; this water mass plays an importnat role in the climate history of the earth.