摘要
近些年来，秦皇岛地区海岸侵蚀已成为一种严重的地质灾害。通过分析计算，本区地壳上升的速度量级很小，不会对海岸的侵蚀造成显著的影响。海平面的升高，使区内一些稳定区及下降区的海岸侵蚀加强。尽管秦皇岛所处的渤海周围有许多特别是象黄河这样的高泥沙含量的河流，但其大部分泥沙只分布在沿岸地带。潮汐、环流和水团对秦皇岛沿岸的泥沙运移具有重大的影响。由顺岸风产生的顺岸流是海岸带侵蚀与淤积的直接因素。在本区入海的一些河流上兴修的水库与挖沙采石，减少了入海泥沙量，这些人为因素是现今秦皇岛海岸侵蚀灾害的主要原因。
Recently,coast erosion is becoming a serious hazard that occurs in Qinhuangdao region.The coast change is influenced by complex multiple factors,that is,tectonic movement,sea level change,river dynamic and human activities.By analysis and calculation,we conclude that velocity of crust lifting is negligible in the region and therefore can not influence coast erosion.The rise of sea level promotes coast erosion in some stable and subsiding areas.Although there are many rivers like Huanghe River with high silt discharge around Bohai Sea where Qinhuangdao is located,the silt is mainly distributed along the coast.Tide and water mass have great effect on silt and sand movement along the coast.Along coast current is a direct factor that causes coast erosion and deposit.Man made reservoirs and sand excavation in some rivers reduce silt discharge into sea,these human activities are vital factors that cause coast erosion hazard in Qinhuangdao region recently.
出处
《海洋地质与第四纪地质》
CAS
CSCD
北大核心
1997年第4期101-107,共7页
Marine Geology & Quaternary Geology
基金
地矿部"八五"攻关项目
