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DOI | 10.1175/JAS-D-18-0322.1 |
Time-Dependent Propagation of Tsunami-Generated Acoustic-Gravity Waves in the Atmosphere | |
Wu, Yue1; Smith, Stefan G. Llewellyn1,2; Rottman, James W.1; Broutman, Dave3; Minster, Jean-Bernard H.2 | |
2020-04-01 | |
发表期刊 | JOURNAL OF THE ATMOSPHERIC SCIENCES |
ISSN | 0022-4928 |
EISSN | 1520-0469 |
出版年 | 2020 |
卷号 | 77期号:4页码:1233-1244 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Tsunami-generated linear acoustic-gravity waves in the atmosphere with altitude-dependent vertical stratification and horizontal background winds are studied with the long-term goal of real-time tsunami warning. The initial-value problem is examined using Fourier-Laplace transforms to investigate the time dependence and to compare the cases of anelastic and compressible atmospheres. The approach includes formulating the linear propagation of acoustic-gravity waves in the vertical, solving the vertical displacement of waves and pressure perturbations numerically as a set of coupled ODEs in the Fourier-Laplace domain, and employing den Iseger's algorithm to carry out a fast and accurate numerical inverse Laplace transform. Results are presented for three cases with different atmospheric and tsunami profiles. Horizontal background winds enhance wave advection in the horizontal but hinder the vertical transmission of internal waves through the whole atmosphere. The effect of compressibility is significant. The rescaled vertical displacement of internal waves at 100-km altitude shows an arrival at the early stage of wave development due to the acoustic branch that is not present in the anelastic case. The long-term displacement also shows an O(1) difference between the compressible and anelastic results for the cases with uniform and realistic stratification. Compressibility hence affects both the speed and amplitude of energy transmitted to the upper atmosphere because of fast acoustic waves. |
英文关键词 | Atmosphere Atmosphere-ocean interaction Internal waves Waves atmospheric Numerical analysis modeling Wind effects |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000526684200001 |
WOS关键词 | INVERSION |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
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/280313 |
专题 | 地球科学 |
作者单位 | 1.Univ Calif San Diego, Dept Mech & Aerosp Engn, La Jolla, CA 92093 USA; 2.Univ Calif San Diego, Scripps Inst Oceanog, La Jolla, CA 92093 USA; 3.Computat Phys Inc, Springfield, VA USA |
推荐引用方式 GB/T 7714 | Wu, Yue,Smith, Stefan G. Llewellyn,Rottman, James W.,et al. Time-Dependent Propagation of Tsunami-Generated Acoustic-Gravity Waves in the Atmosphere[J]. JOURNAL OF THE ATMOSPHERIC SCIENCES,2020,77(4):1233-1244. |
APA | Wu, Yue,Smith, Stefan G. Llewellyn,Rottman, James W.,Broutman, Dave,&Minster, Jean-Bernard H..(2020).Time-Dependent Propagation of Tsunami-Generated Acoustic-Gravity Waves in the Atmosphere.JOURNAL OF THE ATMOSPHERIC SCIENCES,77(4),1233-1244. |
MLA | Wu, Yue,et al."Time-Dependent Propagation of Tsunami-Generated Acoustic-Gravity Waves in the Atmosphere".JOURNAL OF THE ATMOSPHERIC SCIENCES 77.4(2020):1233-1244. |
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