Despite Mt. Etna's long-standing reputation as an effusive volcano, since 1986 there has been an evident increase in mid-intensity explosive eruptions from its summit craters, with more than 240 episodes, better known as paroxysms (otherwise called paroxysmal episodes). These are characterized by strong Strombolian to lava fountaining activity that lasts from tens of minutes to a few days, producing some km-high volcanic plumes and tephra fallouts up to hundreds of km on the ground. Most paroxysms give life to sequences which are clustered like “episodic” eruptions for periods of a few days to a few months, their frequent recurrence causing hazard to air traffic and impacting densely inhabited areas. Nonetheless, a list containing the dates and data of these eruptions is lacking.

In this paper, we tried to fill this gap by compiling a complete record, including master data (date, crater), eruption style and seismic parameters for identifying, characterizing and quantifying both the individual episodes and the entire period. This information comes from a critical review of surveillance reports, raw-data analysis and scientific literature. A retrieval of homogenous and comparable seismic data was possible only for episodes after 2006 following the renewal of seismic stations.

The eruption list provides a complete picture of the 1986–2021 paroxysms, allowing to evaluate their temporal distribution, make a statistical analysis of their time-interval, and undertake a comprehensive investigation of the features of volcanic tremor. The results show a high probability (72%) of having a paroxysmal episode in the 10 days following the previous one. Moreover, a scaling relationship associated with the number-size distribution of the amplitude increases of volcanic tremor accompanying the explosive activities has been constrained. During sequences of paroxysms, combining these outputs can help improve the hazard assessment in terms of frequency of the associated tephra fallouts, and predict the duration of the entire sequence.

尽管山。埃特纳火山长期以来一直享有喷发火山的美誉，自 1986 年以来，其顶峰火山口的中等强度爆发性喷发明显增加，超过 240 次，更为人所知的是发作（也称为阵发性发作）。它们的特点是强烈的 Strombolian 到熔岩喷泉活动持续数十分钟到几天不等，在地面上产生一些千米高的火山羽状物和火山灰沉降物。大多数发作使连续几天到几个月的时间像“偶发性”喷发一样聚集在一起，它们的频繁复发会对空中交通造成危害并影响人口稠密的地区。尽管如此，仍缺乏包含这些喷发日期和数据的清单。

在本文中，我们试图通过编制完整的记录来填补这一空白，包括用于识别、表征和量化单个事件和整个时期的主数据（日期、火山口）、喷发类型和地震参数。这些信息来自对监测报告、原始数据分析和科学文献的严格审查。只有在地震台站更新后 2006 年之后的事件中才有可能检索到同质和可比较的地震数据。

喷发列表提供了 1986-2021 年爆发的完整图片，可以评估它们的时间分布，对其时间间隔进行统计分析，并对火山震颤的特征进行全面调查。结果显示在前一事件之后的 10 天内发生阵发性事件的概率很高 (72%)。此外，与伴随爆炸活动的火山震颤幅度增加的数量-大小分布相关的比例关系受到限制。在发作序列期间，结合这些输出可以帮助改进相关火山灰沉降频率方面的危害评估，并预测整个序列的持续时间。