陆生蜗牛壳体日分辨率氧同位记录定量重建"千年一遇"超级暴雨  

Quantitative reconstruction of a single super rainstorm using daily resolved δ^(18)O of land snail shells

作　　者：王国桢 董吉宝 韩韬 刘成程 罗凡 杨昊天 何妙宏 唐国强 赵楠钰 张倩 薛刚 John Dodson 李秋立 晏宏 Guozhen Wang;Jibao Dong;Tao Han;Chengcheng Liu;Fan Luo;Haotian Yang;Miaohong He;Guoqiang Tang;Nanyu Zhao;Qian Zhang;Gang Xue;John Dodson;Qiuli Li;Hong Yan(State Key Laboratory of Loess and Quaternary Geology,Institute of Earth Environment,Chinese Academy of Sciences,Xi’an 710061,China;Laoshan Laboratory,Qingdao 266061,China;Institute of Global Environmental Change,Xi’an Jiaotong University,Xi’an 710049,China;National Observation and Research Station of Earth Critical Zone on the Loess Plateau of Shaanxi,Xi’an 710061,China;Xi’an Institute for Innovative Earth Environment Research,Xi’an 710061,China;State Key Laboratory of Isotope Geochemistry,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China;School of Biological,Earth and Environmental Sciences,University of New South Wales,Sydney 2052,Australia;State Key Laboratory of Lithospheric Evolution,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China;Yunnan Key Laboratory of Earth System Science,Yunnan University,Kunming 650500,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]State Key Laboratory of Loess and Quaternary Geology,Institute of Earth Environment,Chinese Academy of Sciences,Xi’an 710061,China [2]Laoshan Laboratory,Qingdao 266061,China [3]Institute of Global Environmental Change,Xi’an Jiaotong University,Xi’an 710049,China [4]National Observation and Research Station of Earth Critical Zone on the Loess Plateau of Shaanxi,Xi’an 710061,China [5]Xi’an Institute for Innovative Earth Environment Research,Xi’an 710061,China [6]State Key Laboratory of Isotope Geochemistry,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China [7]School of Biological,Earth and Environmental Sciences,University of New South Wales,Sydney 2052,Australia [8]State Key Laboratory of Lithospheric Evolution,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China [9]Yunnan Key Laboratory of Earth System Science,Yunnan University,Kunming 650500,China [10]University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Science Bulletin》2024年第14期2281-2288,共8页科学通报（英文版）

基　　金：supported by the National Natural Science Foundation of China(42221003,4202530442103084);the Research Projects from the Chinese Academy of Sciences(XDB40000000);the Science and Technology Innovation Project of Laoshan Laboratory(LSKJ202203300);the CAS Youth Interdisciplinary Team。

摘　　要：A"once-in-a-millennium"super rainstorm battered Zhengzhou,central China,from 07/17/2021 to 07/22/2021(named"7.20"Zhengzhou rainstorm).It killed 398 people and caused billions of dollars in damage.A pressing question is whether rainstorms of this intensity can be effectively documented by geological archives to understand better their historical variabilities beyond the range of meteorological data.Here,four land snail shells were collected from Zhengzhou,and weekly to daily resolved snail shellδ^(18)O records from June to September of 2021 were obtained by gas-source mass spectrometry and secondary ion mass spectrometry.The daily resolved records show a dramatic negative shift between 06/18/2021 and 09/18/2021,which has been attributed to the"7.20"Zhengzhou rainstorm.Moreover,the measured amplitude of this shift is consistent with the theoretical value estimated from the flux balance model and instrumental data for the"7.20"Zhengzhou rainstorm.Our results suggest that the ultra-high resolutionδ^(18)O of land snail shells have the potential to reconstruct local synoptic scale rainstorms quantitatively,and thus fossil snail shells in sedimentary strata can be valuable material for investigating the historical variability of local rainstorms under different climate backgrounds.

关 键 词：RAINSTORM Land snail shell d18O Paleoweather Central China 

分 类 号：P426.62[天文地球—大气科学及气象学] P597