论文部分内容阅读
本文主要论述了大洋的水动力状况及其对有机质、二氧化硅和碳酸钙在海底沉积物中堆积的影响。一、任务的提出沉积物中的生物组分——有机碳、二氧化硅和碳酸钙——对予大洋沉积作用理论的研究,有着十分重要的意义。通过对它们的研究,可以发现沉积过程中的相互微妙关系,这一成果从其它组分的研究中是得不到的。问题就在于生命,即生命物质,不同于矿物悬浮物质,它需要不断地获得许多化学物质,进行不断地代谢,其中最重要的是磷、氮、二氧化硅和微量元素。因为从空中——从带来雨水的大气中——这些物质是得不到的。对于浮游生物来说,这些物质唯一来源于大洋的深部,在那里这些物质的储备是大量的。使得表层水与较深部的水产生混合作用的水的各种运动,即大洋的水动力性质,乃是光合作用带中氮、磷及其它元素补给的基本机理,表层水的年温度变化也是引起水的混合作用一个补充因素,年温度变化的幅度越大,则水的混合程度也越高。在大洋的不同区域,这两种混合作用的幅度是不同的,它们的关系是复杂的,并控制着程度不同的
This paper discusses the oceanic hydrodynamic conditions and their effects on the deposition of organic matter, silica and calcium carbonate in seabed sediments. First, the task proposed The biological components of sediments - organic carbon, silicon dioxide and calcium carbonate - to the theory of the role of ocean sediment has great significance. Through their research, we can find the subtle relationship between the deposition process, this result from other components of the study is not available. The problem lies in the fact that life, that is, living matter, unlike mineral suspended matter, requires constant access to many chemicals for continuous metabolism, most notably phosphorus, nitrogen, silica and trace elements. Because from the air - from the atmosphere that brings rain - these things are not available. For plankton, these are the only ones that originate in the depths of the oceans, where the reserves of these materials are substantial. The various movements of the water that make the surface water mix with the deeper water, the oceans’ hydrodynamic properties, are the basic mechanisms for the replenishment of nitrogen, phosphorus and other elements in the photosynthetic zone, as are the annual temperature changes in surface waters Water mixing a complementary factor, the greater the magnitude of annual temperature changes, the higher the degree of water mixing. In different regions of the oceans, the amplitudes of the two types of mixing are different, their relationship is complex, and their degree of control is different