The Volcano Acoustic Source: Decoupling Crater Modulation From Infrasound Signal
火山声源:从次声信号中解耦火山口调制
基本信息
- 批准号:1830976
- 负责人:
- 金额:$ 33.48万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:2019
- 资助国家:美国
- 起止时间:2019-03-15 至 2023-02-28
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
Volcanoes radiate intense sounds concentrated in the infrasound band, which is below the frequency threshold of human hearing. Such sounds are often recorded many kilometers from a volcano and are used by scientists and observatories to continuously observe eruptions; commonly infrasound is used to detect explosions and to measure eruption intensity and character. This study's objective is to improve the understanding of how infrasound relates to eruptive processes occurring within a volcanic crater. To implement infrasound as an effective tool it is necessary to understand how the recorded sound signals are modulated by crater shape. This work aims to measure, model, and quantify the influence of the crater's acoustic response, which influences the radiated sound much like the horn of a musical instrument. Measurements will include field work where the sound field is recorded both within and outside the craters of active volcanoes. Anticipated results will lead to improved modeling of eruptive processes and to better recognition of changes in volcanic unrest. This study will bring together a diverse international team spanning numerical, analytical, and field expertise from not just Idaho, but Hawaii, Chile, Italy, and the Democratic Republic of the Congo. The work will also fund graduate and undergraduate students, and contribute to exciting public outreach opportunities which include chronicling the efforts through a component of professional videographies. The crater acoustic response is a transfer function, which relates source processes occurring at the bottom of a volcanic crater to the infrasound that is radiated to distant receivers. An understanding of the crater acoustic response is critical to improving utility of volcano infrasound recordings for both general monitoring and for improving physics-based eruption models. In cases where craters are deep and narrow and/or assymetric, the crater acoustic response can be particularly extreme and can significantly distort a source-time function. Deconvolution of the crater's acoustic response is thus critical to recovering accurate source-time functions. This study's integrated numerical modeling and field work, which incorporates large-N infrasound sampling, will permit robust quantification of the crater's sound modulation effects. Anticipated results will permit researchers to better infer source parameters and to invert for crater geometry, which may vary dynamically over time at active volcanoes.This award reflects NSF's statutory mission and has been deemed worthy of support through evaluation using the Foundation's intellectual merit and broader impacts review criteria.
火山发出的强烈声音集中在次声带,低于人类听觉的频率阈值。这种声音通常是在距离火山数公里处记录下来的,科学家和天文台利用这些声音来持续观察火山喷发;次声通常用于探测爆炸并测量喷发强度和特征。这项研究的目的是提高对次声与火山口内发生的喷发过程之间的关系的理解。为了将次声作为一种有效的工具,有必要了解记录的声音信号是如何通过陨石坑形状进行调制的。 这项工作的目的是测量、建模和量化陨石坑声学响应的影响,它对辐射声音的影响就像乐器的号角一样。测量将包括现场工作,记录活火山火山口内外的声场。预期结果将改进喷发过程的模型,并更好地认识火山动荡的变化。这项研究将汇集一支多元化的国际团队,他们不仅来自爱达荷州,还来自夏威夷、智利、意大利和刚果民主共和国,涵盖数值、分析和现场专业知识。这项工作还将资助研究生和本科生,并为令人兴奋的公共宣传机会做出贡献,其中包括通过专业视频记录这些努力。火山口声响应是一种传递函数,它将火山口底部发生的源过程与辐射到远处接收器的次声联系起来。了解火山口声学响应对于提高火山次声记录在一般监测和改进基于物理的喷发模型的实用性至关重要。在弹坑又深又窄和/或不对称的情况下,弹坑声响应可能特别极端,并且可能显着扭曲源时间函数。因此,陨石坑声学响应的反卷积对于恢复准确的源时间函数至关重要。这项研究的综合数值模拟和现场工作结合了大N次声采样,将允许对陨石坑的声音调制效应进行可靠的量化。预期结果将使研究人员能够更好地推断源参数并反演火山口几何形状,活火山的火山口几何形状可能会随着时间的推移而动态变化。该奖项反映了 NSF 的法定使命,并通过使用基金会的智力价值和更广泛的影响进行评估,被认为值得支持审查标准。
项目成果
期刊论文数量(10)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
PORTABLE REAL-TIME VOLCANO INFRASOUND AUDITORY DISPLAY DEVICES
便携式实时火山次声听觉显示设备
- DOI:
- 发表时间:2021-06
- 期刊:
- 影响因子:0
- 作者:Apel, T.;Johnson, J.B.
- 通讯作者:Johnson, J.B.
Volcano infrasound: progress and future directions
火山次声:进展和未来方向
- DOI:10.1007/s00445-022-01544-w
- 发表时间:2022-05
- 期刊:
- 影响因子:3.5
- 作者:Watson, Leighton M.;Iezzi, Alexandra M.;Toney, Liam;Maher, Sean P.;Fee, David;McKee, Kathleen;Ortiz, Hugo D.;Matoza, Robin S.;Gestrich, Julia E.;Bishop, Jordan W.;et al
- 通讯作者:et al
Changes in Crater Geometry Revealed by Inversion of Harmonic Infrasound Observations: 24 December 2018 Eruption of Mount Etna, Italy
谐波次声观测反演揭示火山口几何形状的变化:2018 年 12 月 24 日意大利埃特纳火山喷发
- DOI:10.1029/2020gl088077
- 发表时间:2020-10
- 期刊:
- 影响因子:5.2
- 作者:Watson, Leighton M.;Johnson, Jeffrey B.;Sciotto, Mariangela;Cannata, Andrea
- 通讯作者:Cannata, Andrea
Unoccupied Aircraft Systems (UASs) Reveal the Morphological Changes at Stromboli Volcano (Italy) before, between, and after the 3 July and 28 August 2019 Paroxysmal Eruptions
无人飞机系统 (UAS) 揭示了斯特龙博利火山(意大利)在 2019 年 7 月 3 日至 8 月 28 日阵发性喷发之前、期间和之后的形态变化
- DOI:10.3390/rs13152870
- 发表时间:2021-08
- 期刊:
- 影响因子:5
- 作者:Civico, Riccardo;Ricci, Tullio;Scarlato, Piergiorgio;Andronico, Daniele;Cantarero, Massimo;Carr, Brett B.;De Beni, Emanuela;Del Bello, Elisabetta;Johnson, Jeffrey B.;Kueppers, Ulrich;et al
- 通讯作者:et al
Analyzing continuous infrasound from Stromboli volcano, Italy using unsupervised machine learning
使用无监督机器学习分析意大利斯特龙博利火山的连续次声波
- DOI:10.1016/j.cageo.2020.104494
- 发表时间:2020-04-10
- 期刊:
- 影响因子:0
- 作者:Alex J. C. Witsil;Jeffrey B. Johnson
- 通讯作者:Jeffrey B. Johnson
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Jeffrey Johnson其他文献
The UCLA Study of Children with Moderate-to-Severe Traumatic Brain Injury: Event-Related Potential Measure of Interhemispheric Transfer Time.
加州大学洛杉矶分校对中度至重度创伤性脑损伤儿童的研究:半球间转移时间的事件相关电位测量。
- DOI:
- 发表时间:
2016 - 期刊:
- 影响因子:4.2
- 作者:
Monica U. Ellis;Sarah DeBoard Marion;D. McArthur;T. Babikian;C. Giza;C. Kernan;Nina Newman;Lisa M. Moran;R. Akarakian;Asal Houshiarnejad;R. Mink;Jeffrey Johnson;C. Babbitt;A. Olsen;R. Asarnow - 通讯作者:
R. Asarnow
An Investigation into the Definitions and Development of Pedagogical Content Knowledge Among Pre-Service and Current Mathematics Teachers
职前和在职数学教师教学内容知识的定义和发展调查
- DOI:
- 发表时间:
2024-09-14 - 期刊:
- 影响因子:0
- 作者:
Jeffrey Johnson - 通讯作者:
Jeffrey Johnson
Expert Q-Analysis
专家 Q 分析
- DOI:
10.1068/b170221 - 发表时间:
1990-06-01 - 期刊:
- 影响因子:0
- 作者:
Jeffrey Johnson - 通讯作者:
Jeffrey Johnson
WORKING MEMORY FOR ACTIONS DURING REINFORCEMENT LEARNING
- DOI:
- 发表时间:
2024-09-13 - 期刊:
- 影响因子:0
- 作者:
S. Hackley;Jeffrey Johnson;John Kerns;Mili Kuruvilla;F. Valle - 通讯作者:
F. Valle
Some Structures and Notation of Q-analysis
Q-分析的一些结构和表示法
- DOI:
10.1068/b080073 - 发表时间:
1981-03-01 - 期刊:
- 影响因子:0
- 作者:
Jeffrey Johnson - 通讯作者:
Jeffrey Johnson
Jeffrey Johnson的其他文献
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{{ truncateString('Jeffrey Johnson', 18)}}的其他基金
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2246693 - 财政年份:2023
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$ 33.48万 - 项目类别:
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2240322 - 财政年份:2023
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2214135 - 财政年份:2022
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2048655 - 财政年份:2021
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RAPID Collaborative: Networks and Spatial Dynamics of the US Food Supply Chain amid the COVID-19 Pandemic
RAPID 协作:COVID-19 大流行期间美国食品供应链的网络和空间动态
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2032312 - 财政年份:2020
- 资助金额:
$ 33.48万 - 项目类别:
Standard Grant
SBIR Phase I: Autonomous active safety systems for verifiably safe operation of ground vehicles
SBIR 第一阶段:用于地面车辆可验证安全运行的自主主动安全系统
- 批准号:
2006225 - 财政年份:2020
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$ 33.48万 - 项目类别:
Standard Grant
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CAS:原料化学品产生的复杂反应
- 批准号:
1954835 - 财政年份:2020
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$ 33.48万 - 项目类别:
Standard Grant
Collaborative Research: Lahar dynamics and Monitoring: A multiparametric approach grounded in infrasound
合作研究:拉哈尔动力学和监测:基于次声的多参数方法
- 批准号:
1914491 - 财政年份:2019
- 资助金额:
$ 33.48万 - 项目类别:
Standard Grant
MRI: Upgrade of a 600 MHz Spectrometer for high-sensitivity Nuclear Magnetic Resonance (NMR)
MRI:升级 600 MHz 光谱仪,用于高灵敏度核磁共振 (NMR)
- 批准号:
1828183 - 财政年份:2018
- 资助金额:
$ 33.48万 - 项目类别:
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RUI: Carbon-carbon single bond activation as a route to new organic transformations
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1764118 - 财政年份:2018
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$ 33.48万 - 项目类别:
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