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本文根据黄河口海域的特点,提出了一个新的模式描述沉积过程。将岩芯分成几个较大的部份,每一部份都代表一种沉积环境。在一种沉积环境中,输沙量虽有波动,但这种波动是有周期性的。在不同的周期中,可以认为。~(210)Pb的沉积通量是恒定的。计算不同层段之间的沉积时间可以采用公式: 由于输沙量的周期性变化,沉积物的含水量也往往呈现有规律的周期性变化。文中求出了各岩芯含水量W与。~(210)Pb含量之间的回归方程式,发现相关系数普遍较高。
Based on the characteristics of the Yellow River Estuary, this paper presents a new model to describe the deposition process. The core is divided into several larger sections, each of which represents a sedimentary environment. In a sedimentary environment, although the amount of sediment is fluctuating, the fluctuations are cyclical. In different periods, it can be considered. The deposition flux of ~ (210) Pb is constant. Calculating the deposition time between different intervals can adopt the formula: Due to the periodic change of sediment load, the sediment moisture content also tends to show regular periodic changes. In this paper, the core of the water content W and. ~ (210) Pb content of the regression equation, found that the correlation coefficient is generally higher.