Biological product system around the halocline in the brackish water environment and the geological record.

为了研究这一问题，对阿巴什里湖、麻生海、乌拉努奇湾、诺托罗湖、中尾湖和新集湖进行了水质和底质调查。微咸水环境的特征是盐跃层难以发生上下混合的环境。因此，底层水团的平流主要是由入海侧的淡水水平产生的。底水与地表水混合，通过地表水的流动排出。表层水和底层水的流入方向相反。因此，弱混合发生在两个流动的边界上。此外，在水团末端，潮汐中的河流方向推动上升流，混合变得频繁。因此，Nakaumi湖和Abashiri湖富营养化的底层水混合，e…，与地表水保持高产。更多的TC..这种底层水循环的驱动力是来自河流的水流、风的混合作用、潮汐作用等。它从厚的氧化层沉积物不断地向只看到还原层的沉积物转变，直到最后几乎不间断地移动，这表明入口侧缺乏氧气，这表明对于表层沉积物来说，这种底层水循环是底层水被氧化的环境。从表层沉积物的有机组成来看，堆积在有机物易分解环境的入口侧，TOC含量较低。另一方面，在有机物难以分解的环境中堆积的末端，TOC含量较高。此外，由于盐跃层附近有一定的强化产层，底水团入口和末端的TOC含量极有可能出现差异。较少

Water quality and bottom sediment survey were carried out on Abashiri Lake, Aso sea, Uranouchi Bay, Notoro Lake and Nakaumi Lake and Shinji Lake in order to do this study problem. Features of the brackish environment are to be the environment where the top and bottom mixing is difficult to happen by the halocline. Therefore, the advection of water mass of bottom is mainly horizontally generated of the fresh water of the inflow side from the seaward. The bottom water mixes with the surface water, and it is discharged by the flow of the surface water. Inflow direction of surface water and bottom layer water is reverse-directional. Therefore, the weak mixing happens in the boundary of two flow. In addition, in the end of the water mass, the upwelling is generated by the river direction pushing in the tide, and the mixing becomes frequent. Therefore, the high production is maintained with the surface water by the mixture of bottom water of rich nutrient in Nakaumi Lake and Abashiri Lake, e … More tc.. Driving force of this bottom layer water circulation is water current from the river, mixed action by the wind, tide actions and so on. It continuously changes to the sediment of which only the reduced layer is seen from the sediment with thick oxidized layer in order to almost continuously shift to the end which shows absence of oxygen from entrance side which shows the environment where the bottom water is oxidative for such bottom water circulation for surface sediments. When it is considered at organic composition of the surface sediments, in entrance side which piles up in the environment where the organic substance is easy to be decomposed, the TOC contents is low. On the other hand, in end side which piles up in the environment where the organic substance is difficult to be decomposed, the TOC contents is high. In addition, the difference will be extremely possible for the TOC contents in entrance and end side of bottom water mass, since there is some the enhanced production layer near the halocline. Less