Modern Sedimentation Rates in the Contiguous Sea Area of Changjiang Estuary and Hangzhou Bay

XIA Xiao ming; YANG Hui; LI Yan; LI Bo gen; PAN Shao ming

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Article Navigation > Acta Sedimentologica Sinica > 2004 > 22(1): 130-135

XIA Xiao ming, YANG Hui, LI Yan, LI Bo gen, PAN Shao ming. Modern Sedimentation Rates in the Contiguous Sea Area of Changjiang Estuary and Hangzhou Bay[J]. Acta Sedimentologica Sinica, 2004, 22(1): 130-135.

Citation:

XIA Xiao ming, YANG Hui, LI Yan, LI Bo gen, PAN Shao ming. Modern Sedimentation Rates in the Contiguous Sea Area of Changjiang Estuary and Hangzhou Bay[J]. Acta Sedimentologica Sinica, 2004, 22(1): 130-135.

Modern Sedimentation Rates in the Contiguous Sea Area of Changjiang Estuary and Hangzhou Bay

1.
Key Lab of Submarine Geosciences, Second Institute of Oceanography, Hangzhou 310012;
2.
Key Lab of Coast and Island Development, Nanjing University, Nanjing 210093;
3.
Key Lab of Marine Environment Science, Xiamen University, Xiamen Fujian 361005;
4.
College of Marine Environment, Chinese Ocean University, Qingdao Shandong 266003

Received Date: 2002-11-05
Rev Recd Date: 2003-10-09
Publish Date: 2004-03-10

Abstract

Using the ²¹⁰ Pb and ¹³⁷ Cs dating methods in the sediment cores, the modern sedimentation rates in the contiguous sea area of Changjiang estuary and Hangzhou bay are estimated. The data show the obvious spatial distribution of sedimentation. To the east of the Shijiao Channel, less Changjiang's sediment inputs lead to the lower sedimentation rates because of the intrusion of high salinity water. To the west of the Shijiao Channel, the sea area between Changjiang estuary and Hangzhou bay is the main passage of the Changjiang's sediment southward diffusion. In the shoal area at the mouth of Hangzhou bay, the sedimentation rate reaches 3cm/a because of the sediment transportation effects of Changjiang estuarine plume and the Hangzhou tidal front. In the sea area of the Yangshan Port, the tidal channel with more than 20m waterdepth is being eroded while the shallow areas off the tidal channel accumulate slowly with 0.3～1.6cm/a. In the Majishan Port, which is located at a muddy slope along the the typical tidal channel, the sedimentation process is unstable. Although the normal sedimentation rate is 0.7 3.4cm/a, rapid accumulation and slipping of subbottom layer also frequently occur.
- modern sedimentation rate,
- distribution,
- Changjiang Estuary and Hangzhou Bay

References

[1]	1] Su Jilan, Wang Kangshan. Changjiang river plume and suspended sediment transport in Hangzhou Bay. Continental Shelf Research, 1989, 9(1): 93～111
[2]	薛鸿超. 长江口百年沉积特征. 第十七届海洋工程研讨会暨1995两岸港口及海岸开发研讨会论文集, 1995.1437～1450.[ Xue Hongchao. Century sedimentation feature of Yangtze River Estuary. The Proceedings of the 17 th Chinese Ocean Engineering Conference, 1995. 1437～1450]
[3]	徐钢, 陈吉余. 长江河口海岸演变长周期波动的初步研究. 华东师范大学学报, 1997, 4: 64～70 [ Xu Gang, Chen Jiyu. Study on the long-term cyclic variation of the Changjiang estuarine and coastal evolution. Journal of East China Normal University, 1997, 4: 64～70]
[4]	陈沈良. 崎岖列岛海区百年冲淤特征及其原因. 海洋通报, 2000, 19(1): 58～67 [Chen Shenliang. Erosion and accretion characteristics and their causes in the Qiqu archipelago in the recent century. Marine Science Bulletin, 2000, 19(1): 58～67]
[5]	万国江. 137Cs及 210Pb方法湖泊沉积计年研究新进展. 地球科学进展, 1995, 10(2): 188～192[ Wan Guojiang, Progresses on 137Csand 210Pb dating of lake sediments. Advance In Earth Science, 1995, 19(1): 58～67]
[6]	夏小明, 谢钦春, 李炎, 等. 东海沿岸海底沉积物中的 137Cs、 210Pb分布与沉积环境解释. 东海海洋, 1999, 4: 20～27 [ Xia Xiaoming, Xie Qinchun, Li yan, et al. Distributions of 137Cs and 210Pb in the seabed cores along the coast of East China Sea and their implications to the sedimentation environment. Donghai Marine Science, 1999, 4: 20～27]
[7]	潘少明, 朱大奎, 李炎, 等. 河口港湾沉积物中的 137Cs剖面及其沉积学意义. 沉积学报, 1997, 15(4): 67～71 [ Pan Shaoming, Zhu Dakui, Li Yan, et al. 137Cs profile in sediments in estuaries and its application in sedimentology. Acta Sedimentologica Sinica, 1997, 15(4): 67～71]
[8]	潘少明,王雪瑜. 海南岛洋浦港现代沉积速率. 沉积学报, 1994, 12(2): 86～93 [Pan Shaoming, Wang Xueyu. Recent sedimentation rates in Yangpu habour on Hainan Island. Acta Sedimentologica Sinica, 1994, 12(2): 86～93]
[9]	叶崇开. 137Cs法和 210Pb法对比研究鄱阳湖近代沉积速率. 沉积学报, 1991, 9(1): 106～113[ Ye Chongkai. Contrasting investigation by 137Cs and 210Pb methods for the present sedimentation rate of Poyang lake. Acta Sedimentologica Sinica, 1991, 9(1): 106～113]
[10]	Pennington W, et al. Observations on lake sediments using fallout 137Cs as a tracer. Nature, 1973, 242: 324～326
[11]	Robbins T A, Edgington D N. Determination of recent sedimentation rates in Lake Michigan using 210 Pb and 137Cs. Geochimica et Cosmochimica Acta, 1975, 39: 285～304
[12]	Olsen C R, Simpson H J, et al. Sediment mixing and accumulation rate effects on radionuclide depth profiles in Hudson estuary sediments. Journal of Geophysical Research, 1981, 86(11): 11020～11028
[13]	Milan C S, et al. Assessment of the 137Cs method for estimating sediment accumulation rates: Louisian salt marshes. Journal of Coastal Research, 1995, 11: 296～307
[14]	Demaster D J, Mckee B A, Nittrouer C A, et al. Rates of sediment accumulation and particle reworking based on radiochemical measurement for continental shelf deposits in the East China Sea. Continental Shelf Research, 1985, 4(1/2): 143～158
[15]	Rowan J S, et al. Incorporation of chernobal-derived radiocaesium into reservoir sedimentary sequences. In:McManus J, Duck R W, eds. Geomorphology and sedimentology of lakes and reservoirs. Chichester: Wiley, 1993. 55～71
[16]	Hirose K, Aoyama M, et al. Annual deoptsition of Sr-90, Cs-137 and Pu-239,240 from the 1961～1980 nuclear explosions: A simple model. Journal of the Meteorological Society of Japan, 1987, 65(1):
[17]	万国江, 林文祝, 黄荣贵, 等. 红枫湖沉积物 137Cs垂直剖面的计年特征及侵蚀示踪. 科学通报, 1990, 19: 1487～1490 [ Wan Guojiang, Lin Wenzhu, Huang Ronggui, et al. Dating feature and erosion implication of 137Cs profiles in sediments in Hongfeng Lake. Chinese Science Bulletin, 1990, 19: 1487-1490]
[18]	胡方西,胡辉,谷国传. 长江河口锋面研究. 上海:华东师范大学出版社, 2002. 135 [ Hu Fangxi, Hu Hui, Guo Guochuan. Studies of Fronts in the Changjiang Estuary. Shanghai: East China Normal University Press, 2002. 135]
[19]	冯应俊, 李炎, 谢钦春, 等. 杭州湾地貌及沉积界面的活动性. 海洋学报, 1990, 12(2): 213～223 [ Feng Yinjun, Li Yan, Xie Qinchun, et al. Geomorphology and interface activity of seabed in Hangzhou Bay. Acta Oceanologica Sinica, 1990, 12(2): 213～223]
[20]	夏小明, 李炎, 李伯根, 等. 东海沿岸潮流峡道海岸剖面发育及其动力机制. 海洋与湖沼, 2000,31(5): 543～552 [ Xia Xiaoming, Li Yan, Li Bogen, et al. Process and sediment dynamics of the coastal profile of the tidal channel adjacent to the East China Sea. Oceanologia et Limnologia Sinica, 2000,31(5): 543～552]
[21]	Smith J N, Walton A. Sediment accumulation rates and geochronologies measured in the Saguenay Fjord using the 210Pb dating method. Geochimica et Cosmochimica Acta, 1980, 44: 225～240

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通讯作者: 陈斌, bchen63@163.com

1.
沈阳化工大学材料科学与工程学院沈阳 110142

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Modern Sedimentation Rates in the Contiguous Sea Area of Changjiang Estuary and Hangzhou Bay

1. Key Lab of Submarine Geosciences, Second Institute of Oceanography, Hangzhou 310012;

2. Key Lab of Coast and Island Development, Nanjing University, Nanjing 210093;

3. Key Lab of Marine Environment Science, Xiamen University, Xiamen Fujian 361005;

4. College of Marine Environment, Chinese Ocean University, Qingdao Shandong 266003

Received Date: 2002-11-05

Rev Recd Date: 2003-10-09

Publish Date: 2004-03-10

Key words:

Abstract: Using the ²¹⁰ Pb and ¹³⁷ Cs dating methods in the sediment cores, the modern sedimentation rates in the contiguous sea area of Changjiang estuary and Hangzhou bay are estimated. The data show the obvious spatial distribution of sedimentation. To the east of the Shijiao Channel, less Changjiang's sediment inputs lead to the lower sedimentation rates because of the intrusion of high salinity water. To the west of the Shijiao Channel, the sea area between Changjiang estuary and Hangzhou bay is the main passage of the Changjiang's sediment southward diffusion. In the shoal area at the mouth of Hangzhou bay, the sedimentation rate reaches 3cm/a because of the sediment transportation effects of Changjiang estuarine plume and the Hangzhou tidal front. In the sea area of the Yangshan Port, the tidal channel with more than 20m waterdepth is being eroded while the shallow areas off the tidal channel accumulate slowly with 0.3～1.6cm/a. In the Majishan Port, which is located at a muddy slope along the the typical tidal channel, the sedimentation process is unstable. Although the normal sedimentation rate is 0.7 3.4cm/a, rapid accumulation and slipping of subbottom layer also frequently occur.

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Reference (21)

[1]	1] Su Jilan, Wang Kangshan. Changjiang river plume and suspended sediment transport in Hangzhou Bay. Continental Shelf Research, 1989, 9(1): 93～111
[2]	薛鸿超. 长江口百年沉积特征. 第十七届海洋工程研讨会暨1995两岸港口及海岸开发研讨会论文集, 1995.1437～1450.[ Xue Hongchao. Century sedimentation feature of Yangtze River Estuary. The Proceedings of the 17 th Chinese Ocean Engineering Conference, 1995. 1437～1450]
[3]	徐钢, 陈吉余. 长江河口海岸演变长周期波动的初步研究. 华东师范大学学报, 1997, 4: 64～70 [ Xu Gang, Chen Jiyu. Study on the long-term cyclic variation of the Changjiang estuarine and coastal evolution. Journal of East China Normal University, 1997, 4: 64～70]
[4]	陈沈良. 崎岖列岛海区百年冲淤特征及其原因. 海洋通报, 2000, 19(1): 58～67 [Chen Shenliang. Erosion and accretion characteristics and their causes in the Qiqu archipelago in the recent century. Marine Science Bulletin, 2000, 19(1): 58～67]
[5]	万国江. 137Cs及 210Pb方法湖泊沉积计年研究新进展. 地球科学进展, 1995, 10(2): 188～192[ Wan Guojiang, Progresses on 137Csand 210Pb dating of lake sediments. Advance In Earth Science, 1995, 19(1): 58～67]
[6]	夏小明, 谢钦春, 李炎, 等. 东海沿岸海底沉积物中的 137Cs、 210Pb分布与沉积环境解释. 东海海洋, 1999, 4: 20～27 [ Xia Xiaoming, Xie Qinchun, Li yan, et al. Distributions of 137Cs and 210Pb in the seabed cores along the coast of East China Sea and their implications to the sedimentation environment. Donghai Marine Science, 1999, 4: 20～27]
[7]	潘少明, 朱大奎, 李炎, 等. 河口港湾沉积物中的 137Cs剖面及其沉积学意义. 沉积学报, 1997, 15(4): 67～71 [ Pan Shaoming, Zhu Dakui, Li Yan, et al. 137Cs profile in sediments in estuaries and its application in sedimentology. Acta Sedimentologica Sinica, 1997, 15(4): 67～71]
[8]	潘少明,王雪瑜. 海南岛洋浦港现代沉积速率. 沉积学报, 1994, 12(2): 86～93 [Pan Shaoming, Wang Xueyu. Recent sedimentation rates in Yangpu habour on Hainan Island. Acta Sedimentologica Sinica, 1994, 12(2): 86～93]
[9]	叶崇开. 137Cs法和 210Pb法对比研究鄱阳湖近代沉积速率. 沉积学报, 1991, 9(1): 106～113[ Ye Chongkai. Contrasting investigation by 137Cs and 210Pb methods for the present sedimentation rate of Poyang lake. Acta Sedimentologica Sinica, 1991, 9(1): 106～113]
[10]	Pennington W, et al. Observations on lake sediments using fallout 137Cs as a tracer. Nature, 1973, 242: 324～326
[11]	Robbins T A, Edgington D N. Determination of recent sedimentation rates in Lake Michigan using 210 Pb and 137Cs. Geochimica et Cosmochimica Acta, 1975, 39: 285～304
[12]	Olsen C R, Simpson H J, et al. Sediment mixing and accumulation rate effects on radionuclide depth profiles in Hudson estuary sediments. Journal of Geophysical Research, 1981, 86(11): 11020～11028
[13]	Milan C S, et al. Assessment of the 137Cs method for estimating sediment accumulation rates: Louisian salt marshes. Journal of Coastal Research, 1995, 11: 296～307
[14]	Demaster D J, Mckee B A, Nittrouer C A, et al. Rates of sediment accumulation and particle reworking based on radiochemical measurement for continental shelf deposits in the East China Sea. Continental Shelf Research, 1985, 4(1/2): 143～158
[15]	Rowan J S, et al. Incorporation of chernobal-derived radiocaesium into reservoir sedimentary sequences. In:McManus J, Duck R W, eds. Geomorphology and sedimentology of lakes and reservoirs. Chichester: Wiley, 1993. 55～71
[16]	Hirose K, Aoyama M, et al. Annual deoptsition of Sr-90, Cs-137 and Pu-239,240 from the 1961～1980 nuclear explosions: A simple model. Journal of the Meteorological Society of Japan, 1987, 65(1):
[17]	万国江, 林文祝, 黄荣贵, 等. 红枫湖沉积物 137Cs垂直剖面的计年特征及侵蚀示踪. 科学通报, 1990, 19: 1487～1490 [ Wan Guojiang, Lin Wenzhu, Huang Ronggui, et al. Dating feature and erosion implication of 137Cs profiles in sediments in Hongfeng Lake. Chinese Science Bulletin, 1990, 19: 1487-1490]
[18]	胡方西,胡辉,谷国传. 长江河口锋面研究. 上海:华东师范大学出版社, 2002. 135 [ Hu Fangxi, Hu Hui, Guo Guochuan. Studies of Fronts in the Changjiang Estuary. Shanghai: East China Normal University Press, 2002. 135]
[19]	冯应俊, 李炎, 谢钦春, 等. 杭州湾地貌及沉积界面的活动性. 海洋学报, 1990, 12(2): 213～223 [ Feng Yinjun, Li Yan, Xie Qinchun, et al. Geomorphology and interface activity of seabed in Hangzhou Bay. Acta Oceanologica Sinica, 1990, 12(2): 213～223]
[20]	夏小明, 李炎, 李伯根, 等. 东海沿岸潮流峡道海岸剖面发育及其动力机制. 海洋与湖沼, 2000,31(5): 543～552 [ Xia Xiaoming, Li Yan, Li Bogen, et al. Process and sediment dynamics of the coastal profile of the tidal channel adjacent to the East China Sea. Oceanologia et Limnologia Sinica, 2000,31(5): 543～552]
[21]	Smith J N, Walton A. Sediment accumulation rates and geochronologies measured in the Saguenay Fjord using the 210Pb dating method. Geochimica et Cosmochimica Acta, 1980, 44: 225～240

Modern Sedimentation Rates in the Contiguous Sea Area of Changjiang Estuary and Hangzhou Bay

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通讯作者: 陈斌, bchen63@163.com

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