According of east abyssal plain of the Okinawa Trough with some volcanic materials, it show strong magnetic characteristics different from other sediment environments. 冲绳海槽东槽底平原沉积物含有较多的火山物质,磁学特征与其它沉积环境有明显差异,各磁性参数特征值也明显较强。
Sedimentary sequence of loess and paleosol is one of the most important land sediments, which, as well as abyssal sediment and polar ice-core, is regarded as the most reliable information carrier for paleoenvironment evolution globally. 黄土&古土壤沉积序列是重要陆相沉积体之一,与深海沉积物、极地冰芯一起被认为是全球最可靠的古环境演化的信息载体。