1 Middle Holocene marine flooding and human response in the south Yangtze 2 coastal plain, East China 3 Zhanghua Wang1*, David B. Ryves2, Shao Lei3, Xiaomei Nian1, Ye Lv1, Liang Tang1, 4 Long Wang1, Jiehua Wang3, Jie Chen4 5 1State Key Laboratory of Estuarine and Coastal Research, East China Normal 6 University, Shanghai 200062, China. 7 2Centre for Hydrological and Ecosystem Science (CHES), Department of Geography, 8 Loughborough University, Loughborough LE11 3TU, UK. 9 3Ningbo Municipal Institute of Cultural Relics and Archaeology, Ningbo 315000, 10 China. 11 4Shanghai Museum, Shanghai 200003, China 12 *Corresponding author:
[email protected] 13 14 Abstract: Coastal flooding catastrophes have affected human societies on coastal 15 plains around the world on several occasions in the past, and are threatening 21th 16 century societies under global warming and sea-level rise. However, the role of 17 coastal flooding in the interruption of the Neolithic Liangzhu culture in the lower 18 Yangtze valley, East China coast has been long contested. In this study, we used a 19 well-dated Neolithic site (the Yushan site) close to the present coastline to 20 demonstrate a marine drowning event at the terminal stage of the Liangzhu culture 21 and discuss its linkage to relative sea-level rise. We analysed sedimentology, 22 chronology, organic elemental composition, diatoms and dinoflagellate cysts for 1 23 several typical profiles at the Yushan site. The field and sedimentary data provided 24 clear evidence of a palaeo-typhoon event that overwhelmed the Yushan site at ~2560 25 BCE, which heralded a period of marine inundation and ecological deterioration at 26 the site.