SEDIMENTARY RECORDS OF THE YELLOW RIVER MOUTH MIGRATION: EVIDENCE FROM GRAIN-SIZE AND210Pb
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摘要: 自1855年黄河入海位置由黄海改为渤海以来,尾闾经历了十余次大的改道,最近的两次大的人工改道分别发生于1976年和1996年。研究了取自黄河水下三角洲的两个沉积物岩心,系统开展了沉积物粒度、210Pb放射性同位素分析。研究表明:两个沉积物岩心垂向上粒度组成出现突变,它们记录了1976、1996年两次黄河入海口的变迁。其中A19站下段(14.0~24.0cm)属于三角洲沉积,上段(0~14.0cm)属于海岸沉积,记录了1996年黄河从清水沟改道清8汊入海的河口变迁;A25站下段(15.5~24.0cm)属于正常海岸环境沉积,上段(0~15.5cm)属于三角洲沉积,记录了1976年黄河从刁口改道清水沟入海的变动。黄河入海口的变动导致该处沉积物岩心中210Pb曲线复杂化,出现了阶段式、倒置式等形态,该曲线形态与黄河入海口的波动相一致。Abstract: Since entered into the Bohai Sea in 1855, the mouth of the Yellow river has shifted for a dozen times. The last two times of artificial diversion were happened in 1976 and 1996 respectively. Recently, two sedimentary cores have been taken from the Yellow River Delta, and the grain-size and 210Pb systematically studied. The grain-size components show dramatic changes when the river mouth migrated in 1976 and 1996. The lower part of core A19 (14.0~24cm) was formed in a deltaic environment, while the upper part (0~14.0cm) formed in a coastal environment. The grain size variation at 14.0cm recorded the migration of river mouth in 1996. The lower part (15.5cm~bottom) of core A25 was formed in a coastal environment, while the upper part was formed in a deltaic environment, indicating the mouth migration in 1976. The 210-Pb curves were in a periodical or anti-decay pattern, matching well with the river mouth migrations.
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Key words:
- the Yellow River delta /
- mouth migration /
- grain-size /
- 210Pb /
- sedimentary record
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[1] 仲德林, 刘建立. 黄河改道后河口至黄河海港海岸冲淤变化研究[J]. 海洋测绘, 2003, 23(1):49-52.
[ZHONG Delin, LIU Jianli. Research on the Scour-and-fill structure from the River Mouth to the Harbour Bank of Yellow River after the diversion[J]. Hydrographic Surveying and Charting, 2003, 23(1):49-52.]
[2] 韩广轩, 栗云召, 于君宝, 等. 黄河改道以来黄河三角洲演变过程及其驱动机制[J]. 应用生态学报, 2011, 22(2):467-472.
[HAN Guangxuan, LI Yunzhao, YU Junbao, et al. Evolution process and related driving mechanisms of Yellow River Delta since the diversion of Yellow River[J]. Chinese Journal of Applied Ecology, 2011, 22(2):467-472.]
[3] 彭俊, 陈沈良. 近60年黄河水沙变化过程及其对三角洲的影响[J]. 地理学报, 2009, 64(11):1353-1362.
[PENG Jun, CHEN Shenliang. The variation process of water and sediment and its effect on the Yellow River Delta over the six decades[J]. Acta Geographica Sinica, 2009, 64(11):1353-1362.]
[4] 黄海军, 樊辉. 1976年黄河改道以来三角洲近岸区变化遥感监测[J]. 海洋与湖沼, 2004, 35(4):306-314.
[HUANG Haijun, FAN Hui. Monitoring changes of nearshore zones in the Huanghe (Yellow River) Delta since 1976[J]. Oceanologia et Limnologia Sinica, 2004, 35(4):306-314.]
[5] 刘淑平. 黄河三角洲冲淤时空变化特征及发展趋势预测[D]. 青岛:中国海洋大学, 2007.[LIU Shuping. Study on Spatial-Temporal Evolution of Erosion/Deposition of Yellow River Delta and Trend Forecast[D]. Qingdao:Ocean University of China, 2007.]
[6] Wang Houjie, Yang Zuosheng, Yoshiki Saito, et al. Stepwise decreases of the Huanghe (Yellow River) sediment load (1950-2005):Impacts of climate change and human activities[J]. Global and Planetary Change, 2007, 57:331-354.
[7] 尹延鸿, 周永青, 丁东. 现代黄河三角洲海岸演化研究[J]. 海洋通报, 2004, 23(2):32-40.
[YIN Yanhong, ZHOU Yongqing, DING Dong. Evolultion of Modern Yellow River Delta Coast[J]. marine science Bulletin, 2004, 23(2):32-40.]
[8] 张治昊, 杨明, 杨晓阳, 等. 黄河口海岸冲淤演变的影响因素[J]. 海洋地质前沿, 2011, 27(7):23-27.
[ZHANG Zhihao, YANG Ming, YANG Xiaoyang, et al. Factors controlling over the coast scouring and deposition at Yellow River estuary[J]. Marine Geology Frontiers, 2011, 27(7):23-27.]
[9] 杨伟, 陈沈良, 谷国传, 等. 黄河三角洲清水沟河口区近期冲淤演变特征[J]. 海洋通报, 2010, 29(1):44-51.
[YANG Wei, CHEN Shenliang, GU Guochuan, et al. Accretion and erosion characteristics of Qingshuigou Lobe of the Yellow River Delta in the near future[J]. Marine Science Bulletin, 2010, 29(1):44-51.]
[10] Bi Naishuang, Yang Zuosheng, Wang Houjie, et al. Sediment dispersion pattern off the present Huanghe (Yellow River) subdelta and its dynamic mechanism during normal river discharge period[J]. Estuarine, Coastal and Shelf Science, 2010, 86:352-362.
[11] 乔淑卿, 石学法. 黄河三角洲沉积特征和演化研究现状及展望[J]. 海洋科学进展, 2010, 28(3):408-416.
[QIAO Shuqing, SHI Xuefa. Status and prospect of studies on sedimentary characteristics and evolution of the Yellow River delta[J]. Advances in Marine Science, 2010, 28(3):408-416.]
[12] 成国栋, 任于灿, 李绍全, 等. 现代黄河三角洲河道演变及垂向序列[J]. 海洋地质与第四纪地质, 1986, 6(2):1-12.
[CHENG Guodong, REN Yucan, LI Shaoquan, et al. Channel evolution and sedimentary sequence of modern Huang He River Delta[J]. Marine Geology and Quaternary Geology, 1986, 6(2):1-12.]
[13] 成国栋. 黄河现代沉积作用及模式[M]. 北京:地质出版社, 1991.[CHENG Guodong. Modern sedimentation and model of the Yellow River Delta[M]. Beijing:Geological Publishing House, 1991.]
[14] 高善明, 李元芳, 安凤桐, 等. 黄河三角洲形成和沉积环境[M]. 北京:科学出版社, 1989.[GAO Shanming, LI Yuanfang, AN Fengtong, et al. The formation and sedimentary environment of the Huang He River Delta[M]. Beijing:Science Press, 1989.]
[15] 黄世光. 套尔河湾海域泥沙冲淤特征-兼论黄河改道后三角洲的冲淤演化[J]. 海洋与湖沼, 1993, 24(2):197-204.
[HUANG Shiguang. Erosion and accumulation in the adjacent area of the Taoerhe bay-with emphasis on erosion-accumulation of the Huang He River Delta after its shifted course[J]. Oceanologia et Limnologia Sinica, 1993, 24(2):197-204.]
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