Atmospheric physicochemical multi-parameter horizonal and vertical mitigation response of two recent Sheveluch volcano eruptions in kamchatka

IF 3.7 2区环境科学与生态学 Q2 ENVIRONMENTAL SCIENCES

Atmospheric Environment Pub Date : 2025-09-19 DOI:10.1016/j.atmosenv.2025.121556

Qinqin Liu , Lu Gui , Xiangjun Ma , Jinlei Li , Jian Xu , Minghui Tao , Hui Jing , Wenxiu Liu , Qijun Jiao , Jiajun Li , Yuxiang Tian , Zhongting Wang , Xuhui Shen

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引用次数: 0

Abstract

Based on the two Sheveluch eruption events on April 10, 2023 and August 17, 2024, the comprehensive phenomenon of the two volcanic eruption events is described from the analysis of the seismic activity sequence of the lithosphere to the distribution of atmospheric materials and heat. The seismic distribution in Sheveluch volcanic area is mainly shallow-source (0–70 km) and small-earthquake (ML 3.5–4.0). The April 2023 volcanic eruption released 3692.8 kt SO₂ (vs. 26.21 kt in August 2024), with broader dispersion (100°W) and extended atmospheric retention, reflecting fundamental differences in eruption dynamics and atmospheric transport patterns. Based on the time series analysis, SO₂ and UV aerosol index exhibit significant responses to the volcano eruption events. Vertical trajectory modeling and aerosol layer height (ALH) results indicate eruption column heights of 10 km and 8–9 km for the April 10, 2023 and August 17, 2024 volcanic events, respectively. Notably, positive temperature anomalies observed in the lower stratosphere show potential correlations with volcanic eruption. Comparing the ozone profile with the temperature profile, the ozone depletion may result in a decrease in stratospheric temperature. Volcanic eruption heights at the tropopause level may have an amplifying impact effect on the lower stratosphere. The description of the horizontal and vertical migration processes of atmospheric materials during volcanic eruption is of great significance for the study of multi-layer coupling mechanism.

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堪察加舍韦鲁克火山最近两次喷发的大气物理化学多参数水平和垂直减缓响应

以2023年4月10日和2024年8月17日两次舍韦鲁克火山喷发事件为基础，从岩石圈地震活动序列分析到大气物质和热量分布，描述了两次火山喷发事件的综合现象。舍韦鲁克火山区地震分布以浅源（0 ~ 70 km）和小震（3.5 ~ 4.0）为主。2023年4月火山喷发释放了3692.8 kt SO2(2024年8月为26.21 kt)，分散范围更广（100°W），大气滞留时间更长，反映了喷发动力学和大气输送模式的根本差异。基于时间序列分析，SO2和UV气溶胶指数对火山喷发事件有显著的响应。垂直轨迹模拟和气溶胶层高度（ALH）结果显示，2023年4月10日和2024年8月17日火山事件的喷发柱高度分别为10 km和8 ~ 9 km。值得注意的是，平流层下层观测到的正温度异常显示出与火山喷发的潜在相关性。将臭氧廓线与温度廓线相比较，臭氧耗损可能导致平流层温度下降。对流层顶高度的火山喷发高度可能对平流层下部产生放大效应。描述火山喷发过程中大气物质的水平和垂直运移过程，对多层耦合机制的研究具有重要意义。

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来源期刊

Atmospheric Environment 环境科学-环境科学

CiteScore

9.40

自引率

8.00%

发文量

458

审稿时长

53 days

期刊介绍： Atmospheric Environment has an open access mirror journal Atmospheric Environment: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review. Atmospheric Environment is the international journal for scientists in different disciplines related to atmospheric composition and its impacts. The journal publishes scientific articles with atmospheric relevance of emissions and depositions of gaseous and particulate compounds, chemical processes and physical effects in the atmosphere, as well as impacts of the changing atmospheric composition on human health, air quality, climate change, and ecosystems.