首页|Coastal hypoxia response to the coupling of catastrophic flood,extreme marine heatwave and typhoon:a case study off the Changjiang River Estuary in summer 2020

Coastal hypoxia response to the coupling of catastrophic flood,extreme marine heatwave and typhoon:a case study off the Changjiang River Estuary in summer 2020

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Massive bodies of low-oxygen bottom waters are found in coastal areas worldwide,which are detrimental to coastal ecosystems.In summer 2020,the response of coastal hypoxia to extreme weather events,including a catastrophic flooding,an extreme marine heatwave,and Typhoon Bavi,is investigated based on multiple satellite,four cruises,and mooring observations.The extensive fan-shaped hypoxia zone presents significant northward extension during July-September 2020,and is estimated as large as 13 000 km2 with rather low oxygen minimum(0.42 mg/L)during its peak in 28-30 August.This severe hypoxia is attributed to the persistent strong stratification,which is indicated by flood-induced larger amount of riverine freshwater input and subsequent marine heatwave off the Changjiang River Estuary.Moreover,the Typhoon Bavi has limited effect on the marine heatwave and coastal hypoxia in summer 2020.

coastal hypoxiaChangjiang River Estuaryextreme weather eventsseasonal evolution

Xiao Ma、Qicheng Meng、Dewang Li、Yuanli Zhu、Xiaobo Ni、Dingyong Zeng、Di Tian、Ting Huang、Zhihao Jiang、Haiyan Jin、Feng Zhou

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State Key Laboratory of Satellite Ocean Environment Dynamics,Second Institute of Oceanography,Ministry of Natural Resources,Hangzhou 310012,China

Observation and Research Station of Yangtze River Delta Marine Ecosystems,Ministry of Natural Resources,Zhoushan 316022,China

Key Laboratory of Marine Ecosystem Dynamics,Second Institute of Oceanography,Ministry of Natural Resources,Hangzhou 310012,China

School of Oceanography,Shanghai Jiao Tong University,Shanghai 200240,China

College of Oceanography,Zhejiang University,Zhoushan 316021,China

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National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Program on Global Change and Air-Sea Interaction(Phase Ⅱ)Key Research & Development Program of Zhejiang ProvinceJoint Funds of the Zhejiang Provincial Natural Science Foundation of ChinaLong Term Observation and Research Plan in the Changjiang River Estuary and the Adjacent East China Sea ProjectProject of State Key Laboratory of Satellite Ocean Environment DynamicsZhejiang Provincial Natural Science FoundationZhejiang Provincial Ten Thousand Talents Plan

U23A203342230404GASI-01-CJK2022C03044LZJMZ23D050001SZZ2007SOEDZZ2105LR16D0600012020R52038

2024

10.1007/s13131-024-2311-1

海洋学报(英文版)
中国海洋学会

海洋学报(英文版)

CSTPCD
影响因子：0.323
ISSN：0253-505X
年,卷(期)：2024.43(6)