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长江口海岸带地动型海平面变化及定量计算

Coastal Diastrophico- eustasy and Its Quantitative Calculation in the Yangtze River Estuary
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摘要 面对影响全球的海平面变化问题,专门研究地动型海平面变化特征,其主要表现为垂直水平方向的大地水准面变化,即三个主导因素为地面沉降、构造作用、沉积作用,地动型海平面的变化是该三因素共同作用的叠加结果。分析典型研究区长江口海岸带的地质环境条件,利用三因素的关系模型和数据等值线,定量计算了1980~1995年、1996~2001年、2002~2006年的地动型海平面变化量,结果表明:城市建设区的地动型海平面变化量总体比非城区偏大,近海岸线区域地动型海平面变化量比城市建设区偏低;1996~2001年是地动型海平面变化量最大的时期。 Facing the problem of global sea level changes,the main performance of the diastrophico- eustasy is the geoid changes at the vertical and horizontal direction,namely the three dominant factors for land subsidence,tectonics and sedimentation. The diastrophico- eustasy is the result of three factors acted. Based on the Yangtze River Estuary coastal zone geological conditions,using the data of the three factors,that calculated quantitatively the diastrophico- eustasy variation in 1980 ~1995,1996 ~ 2001,and 2002 ~ 2006. The results show that: the diastrophico- eustasy variation of city area in general larger than other area. 1996 ~ 2001 is the maximum amount time of the diastrophico- eustasy.
出处 《地下水》 2016年第1期111-113,共3页 Ground water
基金 国土资源部公益性行业科研专项(201011019-05) 国家自然科学基金(41202175)
关键词 地动型海平面变化 定量计算 长江口 主导因素 Diastrophico-eustasy quantitative calculation Yangtze River estuary and main factor
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