Researches on coastal storm surge frequency during the warm period of Middle Holocene in central Jiangsu Province in China

BAI Chun-guang; WANG Jian; XU Yong-hui

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BAI Chun-guang, WANG Jian, XU Yong-hui. Researches on coastal storm surge frequency during the warm period of Middle Holocene in central Jiangsu Province in China[J]. Haiyang Xuebao, 2006, 28(6): 78-85.

Citation:

BAI Chun-guang, WANG Jian, XU Yong-hui. Researches on coastal storm surge frequency during the warm period of Middle Holocene in central Jiangsu Province in China[J]. Haiyang Xuebao, 2006, 28(6): 78-85.

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Researches on coastal storm surge frequency during the warm period of Middle Holocene in central Jiangsu Province in China

1.
Department of Geographical Information Engineering, Southeast University, Nanjing 210096, China;College of Geographical Sciences, Nanjing Normal University, Nanjing 210097, China
2.
College of Geographical Sciences, Nanjing Normal University, Nanjing 210097, China
3.
College of Geographical Sciences, Nanjing Normal University, Nanjing 210097, China;Department of Urban and Resource Sciences, Nanjing University, Nanjing 210093, China

Received Date: 2005-11-28
Rev Recd Date: 2006-04-10

Abstract

Abstract

Three column sections have been collected from Shanggang,Yancheng City,Jiangsu Province to analyse the storm surge frequency during the warm stage in Middle Holocene.The results of lithology,datingage by ^l4C,fo raminifer a assem blages,calcareous nannofossils and palynolo gical features indicate that the deposits were tidal flat deposits formed in the warm period of Middle Holocene and it was warmer at that time than today.According to the periodiciy of tide deposits,the sand layers being characterized by every 15 cm or so in the silt sections are analyzed,and the result shows it is seasonal tide depo sits periodicity.On the basis of these resear ches,the characteristics of storms recorded in the sections are observed and it shows that the relatively stronger storm surge frequency is once every 2~4 a,yet the estimated result on the data of the highest water level value of every year in the Liangduo gate of Yancheng by the way of Gumbel curve fitindicates that the modern storm surge with equivalent int ensity occurs once every 12 a.So the storm surge frequency in the warm period in Middle Holocene is higher than that of today and it can been speculated on that the frequency will increase with global warming.
- storm surge frequency,
- warm period of Middle Holocene,
- central Jiangsu Province,
- siltmud couplets in tidal flat

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References(19)

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