(Table 1) Calcium and magnesium in porewater at DSDP Hole 94-608@en

The suggestion that nuclear waste material might be buried within the sediments of the deep ocean has increased interest in possible ways that vertical pore-water movement might be detected and measured. A heat-flow station (Discovery 10335) previously occupied near Kings Trough indicated nonlinear temperature-depth profiles in the surficial sediments, which could be interpreted in terms of a very high upward pore-water velocity. The calcium and magnesium pore-water profiles at Site 608, however, prove to be unusually linear and show a strong inverse correlation with each other. In these circumstances it is very unlikely that vertical pore-water movements have occurred, and the application of a simple model indicates that, given the assumptions of this model, the vertical pore-water advection velocity has been zero ± 0.006 cm yr**-1. for a substantial fraction of the recent sedimentological history of this area.关于可将核废料（nuclear waste material）埋藏于深海沉积物中的提议，提升了学界对孔隙水垂直运移（vertical pore-water movement）的探测与测量方法的研究关注度。此前在金斯海槽（Kings Trough）附近部署的热流站位（heat-flow station）“发现号10335”（Discovery 10335）观测到，该站位的表层沉积物（surficial sediments）存在温度-深度非线性剖面（nonlinear temperature-depth profiles），据此可将其解释为存在极高的孔隙水向上运移速率。然而，608站位（Site 608）的钙（calcium）、镁（magnesium）孔隙水剖面却呈现异常线性分布，且二者间存在显著的负相关关系。在此情形下，该区域几乎未发生孔隙水垂直运移；结合该模型的假设前提，通过简单模型（simple model）的分析可知，在该区域近期沉积学历史（sedimentological history）的相当大一部分时段内，孔隙水垂直平流速率（vertical pore-water advection velocity）为0 ± 0.006 厘米/年。