APPLICATION OF 137Cs CHRONOLOGY TO COASTAL SALT MARSHES

WANG Ai-jun; GAO Shu; Chen Jian

2006 Vol. 26, No. 5

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WANG Ai-jun, GAO Shu, Chen Jian. APPLICATION OF 137Cs CHRONOLOGY TO COASTAL SALT MARSHES[J]. Marine Geology & Quaternary Geology, 2006, 26(5): 85-90.

Citation:

WANG Ai-jun, GAO Shu, Chen Jian. APPLICATION OF 137Cs CHRONOLOGY TO COASTAL SALT MARSHES[J]. Marine Geology & Quaternary Geology, 2006, 26(5): 85-90.

APPLICATION OF 137Cs CHRONOLOGY TO COASTAL SALT MARSHES

1 Open Lab of Ocean & Coast Environmental Geology, Third Institute of Oceanography, SOA, Xiamen 361005, China;
2 Ministry of Education Key Laboratory for Coast and Island Development, Nanjing University, Nanjing 210093, China

Received Date: 11 March 2006

Revised Date: 24 May 2006

Abstract

Abstract

Salt marshes are a widespread coastal and estuarine environment,and geomorphologically are composed of an approximately leveling,vegetated platform dissected by network of typically blind-ended channels. It is important for studying the depositional processes and sedimentation rates to understand deeply the interaction between human activities and coastal system. 137Cs chronology is an effective technique for studying modern sedimentation rates since 20 years. 137Cs is an artificial radioactive isotope introduced into the natural environment since the start of the atmospheric nuclear weapon testing in the 1950s. 137Cs can be exchanged and adsorbed in the surface sediment and buried through the air-water interface and water-sediment interface,and four dating markers(1954,1963,1974 and 1986)which correspond to the onset and peaks discharge of 137Cs can be identified and the sedimentation rates in different periods can be calculated. 137Cs chronology is used widely to study sedimentation rates in lakes,continental shelves,bays and tidal flats,and gives better study results. The 137Cs chronology needs high stability of strata in study area,and its concentration is influenced by clay content and sorting degree of sediments. The root system of the salt marsh vegetation can extend deeply downwards and disturb the stratum sequence. Then it is difficult to identify the characteristic peak,and thus other techniques are needed to do comprehensive estimation.
- ¹³⁷Cs /
- sedimentation rates /
- coastal salt marshes

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References

[1]	Pethick J S. Salt marsh geomorphology[M]//Allen J R L, Pye K (eds).Salt Marshes:Morphodynamics,Conservation and Engineering Significance.Cambridge,England,Cambridge University Press,1992:41-62. Google Scholar
[2]	高抒,朱大奎. 江苏淤泥质海岸剖面的初步研究[J]. 南京大学学报自然科学版,1988,24(1):75-84. Google Scholar [GAO Shu,ZHU Da-kui. The profile of Jiangsu's mud coast[J]. Journal of Nanjing University (Natural Sciences Edition),1988,21(1):75-84.] Google Scholar
[3]	Stoddart D R,Reed D J,French J R. Understanding salt-marsh accretion,Scolt Head Island,Norfolk,England[J]. Estuaries,1989,12(4):228-236. Google Scholar
[4]	陈才俊. 江苏淤长型淤泥质潮滩的剖面发育[J]. 海洋与湖沼,1991,22(4):360-368. Google Scholar [CHEN Cai-jun. Development of depositional tidal flat in Jiangsu Province[J]. Oceanologia et Limnologia Sinica,1991,22(4):360-368.] Google Scholar
[5]	Chmura G L,Coffey A,Crago R. Variation in surface sediment deposition on salt marshes in the Bay of Fundy[J]. Journal of Coastal Research,2001,17(1):221-227. Google Scholar
[6]	Goldburg E D,Koide M. Rates of sediment accumulation in the Indian Ocean[M]//Earth Science and Meteoritics. Amsterdam,North-Holland Publishing Company,1963:90-102. Google Scholar
[7]	Robbins J A,Edgington D N. Determination of recent sedimentation rates in Lake Michigan using Pb-210 and Cs-137[J]. Geochimica et Cosmochimica Acta,1975,39:285-304. Google Scholar
[8]	Delaune R D,Patrick W H,Bursch R J. Sedimentation rates determined by ¹³⁷Cs dating in a rapidly accreting salt marsh[J]. Nature,1978,275:532-533. Google Scholar
[9]	Sharma P,Gardner L R,Moore W S,et al. Sedimentation and bioturbation in a salt marsh as revealed by ²¹⁰Pb,¹³⁷Cs,and ⁷Be studies[J]. Limnology and Oceanography,1987,32(2):313-326. Google Scholar
[10]	Ritchie J C,McHenry J R. Application of radioactive fallout cesium-137 for measuring soil erosion and sediment accumulation rates and sediment accumulation rates and patterns:a review[J]. Journal of Environmental Quality,1990,19:215-233. Google Scholar
[11]	李文权,李淑英. ¹³⁷Cs法测定厦门西港和九龙江口现代沉积物的沉积速率[J]. 海洋通报,1991,10(3):63-68. Google Scholar [LI Wen-quan,LI Shu-ying.Determination of recent sedimentation rates in Xiamen western harbour and Jiulong River estuary by means of ¹³⁷Cs[J]. Marine Science Bulletin,1991,10(3):63-68.] Google Scholar
[12]	Milan C S,Swenson E M,Turner R E,et al.Assessment of the ¹³⁷Cs method for estimating sediment accumulation rates:Louisiana salt marshes[J]. Journal of Coastal Research,1995,11(2):296-307. Google Scholar
[13]	Callaway J C,Delaune R D,Patrick W H. Chernobyl Cs-137 used to determine sediment accretion rates at selected north European coastal wetlands[J]. Limnology and Oceanography,1996,41(3):444-450. Google Scholar
[14]	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[J]. 沉积学报,1997,15(4):67-71. Google Scholar [PAN Shao-ming,ZHU Da-kui,LI Yan,et al. ¹³⁷Cs profile in sediments in estuaries and its application in sedimentology[J]. Acta Sedimentologica Sinica,1997,15(4):67-71.] Google Scholar
[15]	Orson R A,Warren R S,Niering W A. Interpreting sea level rise and rates of vertical marsh accretion in a southern New England tidal salt marsh[J]. Estuarine,Coastal and Shelf Science,1998,47:419-429. Google Scholar
[16]	万国江. 现代沉积年分辨的¹³⁷Cs计年——以云南洱海和贵州红枫湖为例[J]. 第四纪研究,1999,19(1):73-80. Google Scholar [WAN Guo-jiang.The ¹³⁷Cs dating of annual layers of recent sediments:examples from Hongfeng Lake and Erhai Lake[J]. Quaternary Sciences,1999,19(1):73-80.] Google Scholar
[17]	夏小明, 谢钦春, 李炎, 等. 东海沿岸海底沉积物中的¹³⁷Cs、²¹⁰Pb分布及其沉积环境解释[J]. 东海海洋,1999,17(1):20-27. Google Scholar [XIA Xiao-ming,XIE Qin-chun,LI Yan,et al. ¹³⁷Cs and ²¹⁰Pb profiles of the seabed cores along the East China Sea coast and their implications to sedimentary environment[J]. Donghai Marine Science,1999,17(1):20-27.] Google Scholar
[18]	Andersen T J,Mikkelsen O A,Moller A L,et al.Deposition and mixing depths on some European intertidal mudflats based on ¹³⁷Cs dating technique[J]. Continental Shelf Research,2000,20:1569-1591. Google Scholar
[19]	李建芬,王宏,夏威岚,等. 渤海湾西岸²¹⁰Pb_exc、¹³⁷Cs测年与现代沉积速率[J]. 地质调查与研究,2003,26(2):114-128. Google Scholar [LI Jian-fen,WANG Hong,XIA Wei-lan,et al.²¹⁰Pb_exc and ¹³⁷Cs dating and modern sedimentation rate on the western coast of Bohai Gulf[J]. Geologocal Survey and Research,2003,26(2):114-128.] Google Scholar
[20]	王爱军,高抒,贾建军,等. 江苏王港盐沼的现代沉积速率[J]. 地理学报,2005,60(1):61-70. Google Scholar [WANG Ai-jun,GAO Shu,JIA Jian-jun,et al.Sedimentation rates in the Wanggang salt marshes,Jiangsu[J]. Acta Geographica Sinica,2005,60(1):61-70.] Google Scholar
[21]	孟伟,雷坤,郑丙辉,等. 渤海湾西岸潮间带现代沉积速率研究[J]. 海洋学报,2005,27(3):67-72. Google Scholar [MENG Wei,LEI Kun,ZHENG Bing-hui,et al.Modern sedimentation rates in the intertidal zone on the west coastal zone of the Bohai Gulf[J]. Acta Oceanologica Sinica,2005,27(3):67-72.] Google Scholar
[22]	Lu X Q,Matsumoto E. Recent sedimentation rates derived from ²¹⁰Pb and ¹³⁷Cs methods in Ise Bay,Japan[J]. Estuarine,Coastal and Shelf Science,2005,65:83-93. Google Scholar
[23]	Appleby P G. Radiometric dating of the United Kingdom SWAP sites[J]. Philosophy Royal Society of London,1990,327:233-238. Google Scholar
[24]	Jha S K,Chavan S B,Pandit G G,et al.Geochronology of Pb and Hg pollution in a coastal marine environment using global fallout ¹³⁷Cs[J]. Journal of Environmental Radioactivity,2003,69:145-157. Google Scholar
[25]	Frey R W,Basan P B. Coastal salt marshes[M]//Davis R A (editor).Coastal Sedimentary Environment.Springer-Verlag,New York,1985:225-301. Google Scholar
[26]	French J R. Numerical simulation of vertical marsh growth and adjustment to accelerated sea-level rise,North Norfolk,U.K.[J]. Earth Surface Processes and Landforms,1993,18:63-81. Google Scholar
[27]	Roman C T,Peck J A,Allen J R L,et al.Accretion of a New England(USA)salt marsh in response to inlet migration,storms and sea-level rise[J]. Estuarine,Coastal and Shelf Science,1997,45:717-727. Google Scholar
[28]	van Wijnen H J,Bakker J P. Long-term surface elevation change in salt marshes:a prediction of marsh response to future sea-level rise[J]. Estuarine,Coastal and Shelf Science,2001,52:381-390. Google Scholar
[29]	Crooks S. The effect of sea-level rise on coastal geomorphology[J]. Ibis,2004,146(SP1):18-20. Google Scholar
[30]	严平,高尚玉,董光荣. 土壤颗粒组成影响¹³⁷Cs含量的初步实验结果[J]. 中国沙漠,2002,22(2):150-153. Google Scholar [YAN Ping,GAO Shang-yu,DONG Guang-rong. Experimental results of the soil ¹³⁷Cs activity as influenced by particle size[J]. Journal of Desert Research,2002,22(2):150-153.] Google Scholar
[31]	Simpson H J,Olsen C R,Trier R M,et al.Man-made radionuclides and sedimentation in the Hudson River Estuary[J]. Science,1976,194:179-183. Google Scholar
[32]	Brunskill G J. Fayetteville Green Lake,USA,VⅢ,Mass balance for ¹³⁷Cs in water,varved and non-varved sediments[J]. Chemical Geology,1984,44:85-100. Google Scholar
[33]	Davin R B. ¹³⁷Cs and ²¹⁰Pb dating of sediments from soft-water lakes in New England(USA)and Scandinavia,a failure of ¹³⁷Cs dating[J]. Chemical Geology,1984,44:151-185. Google Scholar
[34]	项亮. ¹³⁷Cs湖泊沉积年代学方法应用的局限——以Crawford湖为例[J]. 湖泊科学,1995,7(4):307-313. Google Scholar [XIANG Liang. Limitations of the application of ¹³⁷Cs limnochronology:a case study of ¹³⁷Cs profile in Crawford lake sediment[J]. Journal of Lake Sciences,1995,7(4):307-313.] Google Scholar
[35]	Rogers J J W,Head W B. Relationships between porosity,median size,and sorting coefficients of synthetic sands[J]. Journal of Sedimentary Petrology,1961,31(3):467-470. Google Scholar
[36]	陈一宁,高抒,贾建军,等. 米草属植物Spartina angelica和Spartina alterniflora引种后江苏海岸湿地生态演化的初步探讨[J]. 海洋与湖沼,2005,36(5):394-403. Google Scholar [CHEN Yi-ning,GAO Shu,JIA Jian-jun,et al.Tidal flat ecological changes by transplanting Spartina angelica and Spartina alterniflora,north Jiangsu coast[J]. Oceanologia et Limnologia Sinica,2005,36(5):394-403.] Google Scholar