海底淡水资源赋存条件及舟山北部海域海底淡水资源研究
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摘要
第四纪时期,中国近海气候为冰期和间冰期周期性交替出现,黄、东海陆架区海、陆相地层交替沉积。海底第四系淡水资源主要是赋存在近海相对比较封闭的古河道砂层地层环境中。利用舟山北部海域2009年完成的高分辨率单道地震测量成果,结合前人调查资料和邻近陆地地区的水文地质资料,对地震资料进行了解译和综合分析研究,初步圈定了早更新世时期的长江古河道和钱塘江古河道位置和海底淡水资源丰富区。这些研究成果为我国近海海域海底淡水资源开发提供了科学依据,为舟山北部海域海底淡水资源进一步调查指明了方向。
During Quaternary,the climate is characterized by alternate glacial and interglacial regularly in the China Seas.The sediments are mainly alternate terrigenous deposit and marine deposit in the continental shelf of the Yellow Sea and East China Sea.The submarine freshwater resources are mainly contained in the relative closed sandy layers of ancient channels.Based on the data from high-resolution single-channel seismic surveys in 2009,former investigation datum and neighboring terrestrial hydrogeological data,we interpreted,analyzed and studied all seismic data synthetically.Locations of the paleo-river channels of Yangtze River and Qiantangjiang River during the early Pleistocene were probed primarily.Advantaged areas of submarine freshwater resources were determined.All these lay scientific basis on submarine freshwater sources exploitation in offshore China Seas,and guide further investigation of submarine freshwater resources at north Zhoushan sea area.
During Quaternary,the climate is characterized by alternate glacial and interglacial regularly in the China Seas.The sediments are mainly alternate terrigenous deposit and marine deposit in the continental shelf of the Yellow Sea and East China Sea.The submarine freshwater resources are mainly contained in the relative closed sandy layers of ancient channels.Based on the data from high-resolution single-channel seismic surveys in 2009,former investigation datum and neighboring terrestrial hydrogeological data,we interpreted,analyzed and studied all seismic data synthetically.Locations of the paleo-river channels of Yangtze River and Qiantangjiang River during the early Pleistocene were probed primarily.Advantaged areas of submarine freshwater resources were determined.All these lay scientific basis on submarine freshwater sources exploitation in offshore China Seas,and guide further investigation of submarine freshwater resources at north Zhoushan sea area.
引文
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[9]李家彪.东海区域地质[M].北京:海洋出版社,2008,(6):600-615
[2]金翔龙.东海海洋地质[M].北京:海洋出版社,1992:460-513.
[3]郑光膺.黄海第四纪地质[M].北京:科学出版社,1991:122-131.
[4]秦蕴珊.全球变化和陆架沉积[J].沉积学报,1992,10(3):40-47.
[5]李广雪,刘勇,杨子赓,等.末次冰期东海陆架平原上的长江古河道[J].中国科学(D辑),2004,35(3):284-289.
[6]刘海龄,吴世敏,杨树康.初谈海底淡水资源的形成条件与开发意义[J].海洋科学,1995,19(5):32-33.
[7]张卫,覃小群,易连兴.上海地区地下水系统及地下水资源特征[J].中国岩溶,1999,18(4):343-351.
[8]陆志坚.从上海地区地下淡水古河道含水的分布探讨嵊泗列岛的供水问题[J].上海地质,1989(1):23-26.
[9]李家彪.东海区域地质[M].北京:海洋出版社,2008,(6):600-615
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