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首页> 外文期刊>Journal of Volcanology and Geothermal Research >An overview of volcano infrasound: From hawaiian to plinian, local to global
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An overview of volcano infrasound: From hawaiian to plinian, local to global

机译：火山次声概述：从夏威夷到普林尼山，从本地到全球

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Volcano infrasound is an increasingly useful technique for detecting, locating, characterizing, and quantifying eruptive activity, and can be used to constrain eruption source parameters. In recent years, studies of infrasound data from active volcanoes have shown clear progress towards mitigating volcanic hazards and understanding volcanic source processes. Volcano acoustic sources are shallow or aerial, thus volcano infrasound data provide valuable information on eruption dynamics and are readily combined with direct and remote observations of gas, ash, and other eruptive phenomena. The infrasound signals produced by volcanoes are indicative of the eruption style and dynamics. Here we review the diversity of infrasound signals generated by a wide variety of volcanic eruptions, from hawaiian to plinian, and the physical processes inferred to produce them. We place particular emphasis on regional (15-250 km distance) and global (> 250 km distance) volcano infrasound studies, as recent work in this area has made significant advances in monitoring and characterizing remote and difficult-to-monitor eruptions. Long-range infrasonic detection of explosive volcanic eruptions is possible due to the energetic source mechanisms involved, minor atmospheric attenuation at low frequencies, and the existence of waveguides in the atmosphere. However, accurate characterization of the atmosphere and its spatio-temporal variability is required for reliable long-range sound propagation modeling and correct interpretation of global infrasound recordings. Conversely, because volcanic explosions are energetic and sometimes repetitive infrasound sources, they can be used to validate atmospheric and acoustic propagation models.
机译：火山次声技术是一种越来越有用的技术，可用于检测，定位，表征和量化喷发活动，并可用于限制喷发源参数。近年来，对来自活火山的次声数据的研究表明，在减轻火山灾害和了解火山源过程方面取得了明显的进展。火山声源是浅层的或空中的，因此火山次声数据提供了有关喷发动力学的有价值的信息，并且很容易与对气体，灰烬和其他喷发现象的直接和远程观测相结合。火山产生的次声信号表明了喷发的形式和动力学。在这里，我们回顾了从夏威夷到普利尼山的各种火山喷发产生的次声信号的多样性，以及推断产生这些声波的物理过程。我们特别重视区域（15-250 km距离）和全球（> 250 km距离）火山次声研究，因为该领域的最新工作在监测和表征远程和难以监测的喷发方面取得了重大进展。由于涉及的高能源机制，低频下较小的大气衰减以及大气中存在波导，因此有可能对爆炸性火山爆发进行远距离次声检测。但是，为了可靠的远程声音传播建模和对全球次声记录的正确解释，需要对大气及其时空变化进行准确的表征。相反，由于火山爆炸是高能的，有时甚至是重复的次声源，因此它们可用于验证大气和声学传播模型。

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