New Insights Into the Relationship Between Mass Eruption Rate and Volcanic Column Height Based On the IVESPA Data Set

New Insights Into the Relationship Between Mass Eruption Rate and Volcanic Column Height Based On the IVESPA Data Set
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基于IVESPA数据集对火山喷发率与火山柱高度关系的新见解

DOI:
10.1029/2022gl102633
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发表时间:
2023
影响因子:
5.2
通讯作者:
Aubry T
Aubry T
中科院分区:
地球科学1区
文献类型:
--
作者:
Aubry T

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从柱高快速简单地估算质量喷发率(MER)对于真实的实时火山灾害管理和过去爆炸性喷发的重建至关重要。使用来自新的独立火山喷发源参数档案(IVESPA,v1.0)的134个喷发事件,我们探索了四种柱高度测量的经验MER-高度关系:扩散水平,二氧化硫高度和直接观察的顶部高度以及从沉积物中重建的顶部高度。这些关系显示出显着的差异,并强调目前在业务和研究应用中使用的经验模型的局限性。大气层结,风和湿度的作用仍然具有挑战性,以检测跨越在IVESPA的大范围的喷发条件,最终导致经验关系优于分析模型,占大气条件。这一发现突出了使用异质观测和经验模型限制MER高度关系的挑战,这加强了对改进喷发源参数数据集和基于物理模型的需求。
Rapid and simple estimation of the mass eruption rate (MER) from column height is essential for real‐time volcanic hazard management and reconstruction of past explosive eruptions. Using 134 eruptive events from the new Independent Volcanic Eruption Source Parameter Archive (IVESPA, v1.0), we explore empirical MER‐height relationships for four measures of column height: spreading level, sulfur dioxide height, and top height from direct observations and as reconstructed from deposits. These relationships show significant differences and highlight limitations of empirical models currently used in operational and research applications. The roles of atmospheric stratification, wind, and humidity remain challenging to detect across the wide range of eruptive conditions spanned in IVESPA, ultimately resulting in empirical relationships outperforming analytical models that account for atmospheric conditions. This finding highlights challenges in constraining the MER‐height relation using heterogeneous observations and empirical models, which reinforces the need for improved eruption source parameter data sets and physics‐based models.
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