首页|Quantitative reconstruction of a single super rainstorm using daily resolved δ18O of land snail shells

Quantitative reconstruction of a single super rainstorm using daily resolved δ18O of land snail shells

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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 shellδ18O records from June to September of 2021 were obtained by gas-source mass spectrometry and sec-ondary 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 resolution δ18O 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.

RainstormLand snail shellδ18OPaleoweatherCentral China

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

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State Key Laboratory of Loess and Quaternary Geology,Institute of Earth Environment,Chinese Academy of Sciences,Xi'an 710061,China

University of Chinese Academy of Sciences,Beijing 100049,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

Institute of Global Environmental Change,Xi'an Jiaotong University,Xi'an 710049,China

State Key Laboratory of Isotope Geochemistry,Guangzhou Institute of Geochemistry,Chinese Academy of Sciences,Guangzhou 510640,China

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

School of Biological,Earth and Environmental Sciences,University of New South Wales,Sydney 2052,Australia

Laoshan Laboratory,Qingdao 266061,China

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaResearch Projects from the Chinese Academy of SciencesScience and Technology Innovation Project of Laoshan LaboratoryCAS Youth Interdisciplinary Team

4222100342025304 42103084XDB40000000LSKJ202203300

2024

10.1016/j.scib.2024.04.037

科学通报(英文版)
中国科学院

科学通报(英文版)

CSTPCD
ISSN：1001-6538
年,卷(期)：2024.69(14)
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