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| 莱州湾南岸潍河下游地区咸水入侵灾害成因及特征 | |
| 引用本文： | 刘恩峰,张祖陆,沈吉,宋俊峰.莱州湾南岸潍河下游地区咸水入侵灾害成因及特征[J].地球科学与环境学报,2004,26(3):78-82,87. |
| 作者姓名： | 刘恩峰 张祖陆 沈吉 宋俊峰 |
| 作者单位： | 1. 中国科学院,南京地理与湖泊研究所,江苏,南京,210008;中国科学院,研究生院,北京,100039 2. 山东师范大学,地理系,山东,济南,250014 3. 中国科学院,南京地理与湖泊研究所,江苏,南京,210008 4. 内蒙古自治区地质调查院,内蒙古,呼和浩特,010020 |
| 基金项目： | 山东省自然科学基金重点资助项目(Z2000E01)，中国科学院南京地理与湖泊研究所知识创新项目 |
| 摘 要： | 通过对莱州湾南岸咸水入侵较严重地潍河下游地区晚更新世以来沉积特征及现代自然环境条件变化的分析，探讨了沉积相对咸水入侵产生及空间范围特征的环境机理。晚更新世以来的三次海平面升降变化造成了潍河下游地区海陆沉积环境交替，形成了巨厚的海陆交互相沉积层。海进时期，大面积的滨海平原被淹没，在近海平原洼地滞留的海水经过蒸发、浓缩变为卤水，成为咸水入侵的物源；海退后陆源碎屑在滨海地区沉积形成了巨厚的古河道砂层。20世纪70年代末期以来，随着对地下淡水的过度开采，淡咸水水头压力差减小．卤水通过古河道砂层快速南侵。通过对潍河下游地区100余个地质钻孔水化学连续监测资料分析，阐明了咸水入侵的特征，有针对性地提出了咸水入侵的防治措施。 |
| 关 键 词： | 咸水入侵 环境演变 沉积特征 沉积相 潍河下游地区 |
| 文章编号： | 1672-6561(2004)03-0078-05 |
Origin and characteristics of salt-water intrusion disaster in the downstream of Weihe River on the south coast of Laizhou Bay |
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| LIU En-feng.Origin and characteristics of salt-water intrusion disaster in the downstream of Weihe River on the south coast of Laizhou Bay[J].Journal of Earth Sciences and Environment,2004,26(3):78-82,87. | |
| Authors: | LIU En-feng |
| Institution: | LIU En-feng~ |
| Abstract: | As one of the typical environmental disasters at south strand plain in Laizhou Bay, occurrence, development and variation of salt-water intrusion have close relationship with paleo-environmental evolution since Late Pleistocene, and with modern environmental change and human activities. There were three times of sea-level fluctuation corresponding to the paleo-climate evolution, which had formed the sediments of alternative sea and river facies. The alternative changes of paleo-environment favored the formation and imbedding of brine, which is the source of salt-water intrusion; and the paleochannel that formed during regressive of sea level is the path of salt-water intrusion. Large scale salt-water intrusion has been occurred since late 1970's due to freshwater exploitation by human activity. The genesis and variation characteristics are suggested on the basis of the analysis of typical groundwater hydro-chemical section monitoring, geographical prospection data and hydro-chemical analysis from more than 100 geological cores. |
| Keywords: | the lower reaches of Weihe River environmental change salt-water intrusion variation characteristics |
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