Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018GL077766 |
Infrasound Tornillos Produced by Volcan Cotopaxi's Deep Crater | |
Johnson, J. B.1; Ruiz, M. C.2; Ortiz, H. D.3; Watson, L. M.4; Viracucha, G.2; Ramon, P.2; Almeida, M.2 | |
2018-06-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
![]() |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:11页码:5436-5444 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Ecuador |
英文摘要 | We characterize and interpret a new type of infrasound signal originating from the summit of Volcan Cotopaxi (Ecuador) that was primarily observed between September 2015 and March 2016, following the 2015 eruptive period. This infrasound waveform is a slowly decaying sinusoid with exceptional low-frequency (f(p)=0.2 Hz) and high quality factor (Q=similar to 10) and resembles the shape of tornillo seismic waveforms. The repeating events, occurring about once per day in early 2016, are stable in frequency content, and we attribute them to excitation of a vertical-walled crater, with radius of about 125m and length of 300m. Spectral properties of the tornillo permit constraints on crater sound speed (335m/s +/- 6%) and temperature (4-32 degrees C). The initial polarity of the tornillos is predominantly a rarefaction and could reflect repeating crater bottom collapse events (implosions) or explosion sources whose infrasound is heavily modulated by the crater's pipe-like geometry. |
英文关键词 | infrasound tornillo volcano monitoring Cotopaxi Volcano |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000436249900025 |
WOS关键词 | ERUPTION ; EMISSION ; COLLAPSE ; ECUADOR ; EVENTS ; CAVITY ; ISLAND ; WAVES |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/28169 |
专题 | 气候变化 |
作者单位 | 1.Boise State Univ, Dept Geosci, Boise, ID 83725 USA; 2.Escuela Politec Nacl, Inst Geofis, Quito, Ecuador; 3.Pontificia Univ Catolica Ecuador, Escuela Ciencias Fis & Matemat, Quito, Ecuador; 4.Stanford Univ, Dept Geophys, Stanford, CA 94305 USA |
推荐引用方式 GB/T 7714 | Johnson, J. B.,Ruiz, M. C.,Ortiz, H. D.,et al. Infrasound Tornillos Produced by Volcan Cotopaxi's Deep Crater[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(11):5436-5444. |
APA | Johnson, J. B..,Ruiz, M. C..,Ortiz, H. D..,Watson, L. M..,Viracucha, G..,...&Almeida, M..(2018).Infrasound Tornillos Produced by Volcan Cotopaxi's Deep Crater.GEOPHYSICAL RESEARCH LETTERS,45(11),5436-5444. |
MLA | Johnson, J. B.,et al."Infrasound Tornillos Produced by Volcan Cotopaxi's Deep Crater".GEOPHYSICAL RESEARCH LETTERS 45.11(2018):5436-5444. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论