Ocean Sediment Composition Determined by Visible Light Spectra Synoptic and Time Series Applications

摘要利用可见光反射光谱，可以快速分析海洋沉积物岩心，半定量测定沉积物成分。目前，已有四种矿物(针铁矿、赤铁矿、绿泥石和蒙皂石)和有机碳含量从光谱中获得，本研究将寻求扩展数据处理技术。利用这些精细化的技术，将对热带大西洋的岩心进行分析，以了解冰川气候对亚马逊盆地以及撒哈拉沙漠附近风速和范围的相对影响。

Abstract Using visible light reflectance spectra, ocean sediment cores can be analyzed rapidly for semi-quantitative determination of sediment composition. At present, four minerals (goethite, hematite, chlorite and smectite) and organic carbon contents have been derived from the spectra, and the present study will seek to expand the data processing techniques. Using these refined techniques, cores from the tropical Atlantic will be analyzed to see the relative influence of glacial climate on the Amazon Basin and on the extent and velocity of winds off the Sahara.