| 黄河三角洲滨浅海50 m以浅埋藏古河道浅析 |
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| 引用本文： | 刘世昊,丰爱平,李平,杜军,胡维芬.黄河三角洲滨浅海50 m以浅埋藏古河道浅析[J].海岸工程,2013(4):22-30. |
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| 作者姓名： | 刘世昊 丰爱平 李平 杜军 胡维芬 |
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| 作者单位： | [1]国家海洋局第一海洋研究所,山东青岛266061 [2]中国海洋大学环境科学与工程学院,山东青岛266001 [3]中国科学院南海海洋研究所,广东广州510301 |
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| 基金项目： | 海洋公益性行业科研专项—— 黄河三角洲海底浅层标准声学层序与典型灾害地质（20100529-4） |
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| 摘 要： | 黄河三角洲埋藏古河道对工程建设和第四纪环境的研究有重要意义.结合前人的钻孔资料,通过对新老黄河口间近300 km的浅层剖面资料,尤其0～50 m的浅层剖面资料进行分析,发现研究区内古河道属于古黄河水系,断面多呈对称性型,各层位古河道断面在空间上分布具有分区性.河道充填物多为河流溯源堆积,呈发散或上超型反射,工程地质条件差,易造成不均匀沉降、局部塌陷、砂土液化等地质灾害.研究区从约38 kaBP至今共发生3次海退和3次海进,其中1次海退规模较小.
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| 关 键 词： | 黄河三角洲 埋藏古河道 第四纪环境 海洋地质灾害 |
Preliminary Analysis of the Ancient Channels Buried Shallower Than 50 Meters in the Coastal and Offshore Areas of the Yellow River Deltaa |
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| LIU Shi-hao,FENG Ai-ping,LI Ping,DU Jun,HU Wei-fen.Preliminary Analysis of the Ancient Channels Buried Shallower Than 50 Meters in the Coastal and Offshore Areas of the Yellow River Deltaa[J].Coastal Engineering,2013(4):22-30. |
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| Authors: | LIU Shi-hao FENG Ai-ping LI Ping DU Jun HU Wei-fen |
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| Institution: | 1. First Institute of Oceanography ,SOA,Qingdao 266061, China; 2. College of Environmental Science and Engineering ,Ocean University of China , Qingdao 266001, China;3. South China Sea Institute of Oceanology, Chinese Academy of Sciences Guangzhou 510301, China) |
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| Abstract: | The buried ancient channels in the Yellow River Delta are of great significance for the research of Engineering construction and Quaternary environment. About 300 km shallow stratum profiles are analyzed, particularly those shallower than 50 m. Based on these analyses and combined with the previous drilling data, the buried ancient chan- nels found in the study area belong to the tributaries of the ancient Yellow River sys tern. The sections of the ancient channels are mostly symmetrical and their distributions are divisional in each stratum. Most of the tributaries are filled with retrogressive accu- mulations that have diverging or parallel structures and are poor in engineering geolog ical conditions. These fillings may easily cause geologic hazards such as differential set tlement, carving deformation and liquefaction. Three regressions and three transgres- sions occurred from 38 kaBP to now, of which one regression was small in scale. |
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| Keywords: | Yellow River Delta buried ancient channel Quaternary environment marine geologic hazard |
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