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现代海洋环境的稳定程度,取决于地壳内营力和外营力相互作用的结果。所谓内营力是指地壳升降、断裂活动、地震、火山、热流以及大地构造性质等对海洋环境的控制和影响;外营力是指潮汐、河流、风暴、浊流、沿岸流、海平面升降变化、生物作用以及沉积物的特性对海洋环境的影响。在构造相对稳定的海域,海洋环境的稳定程度主要取决于外营力的影响;在构造活动强烈的海城,则主要决定于内营力的作用。这样的海域一旦发生强烈地壳运动及伴随而来的强震、海啸或火山喷发,往往瞬间就会给海洋工程带来惨重的灾难。因此,许多沿岸国家都十分重视研究影响海洋环境的新构造运动,把它作为海洋工程区域稳定性评价的一项基础工作。
The stability of the modern marine environment depends on the results of the intracrustal and extracurricular interactions. The so-called internal force refers to the crustal movements, fracture activities, earthquakes, volcanoes, heat flow and the nature of the earth structure and other marine environmental control and influence; external power refers to tides, rivers, storms, turbidity, coastal currents, sea level movements Changes, biological effects and the sediment characteristics of the marine environment. In a relatively stable sea area, the stability of the marine environment mainly depends on the influence of external power; in Haicheng, where the tectonic activity is strong, it mainly depends on the role of internal power. In the event of a strong crustal movement in this sea area and the accompanying strong earthquakes, tsunamis and volcanic eruptions, they often cause heavy disasters to marine engineering. Therefore, many coastal countries attach great importance to studying the new tectonic movement that affects the marine environment as a basis for the stability assessment of marine engineering.