Zobrazeno 1 - 10
of 61
pro vyhledávání: '"James W. Rottman"'
Publikováno v:
Journal of the Atmospheric Sciences. 77:1233-1244
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 examine
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b8bc82cb20834622008acba1476aabf1
https://doi.org/10.1175/jas-d-18-0322.1
https://doi.org/10.1175/jas-d-18-0322.1
Publikováno v:
Wu, Y; Llewellyn Smith, SG; Rottman, JW; Broutman, D; & Minster, J-BH. (2016). The Propagation of Tsunami-Generated Acoustic–Gravity Waves in the Atmosphere. Journal of the Atmospheric Sciences, 73(8), 3025-3036. doi: 10.1175/JAS-D-15-0255.1. UC San Diego: Retrieved from: http://www.escholarship.org/uc/item/4tf2117s
Tsunami-generated acoustic–gravity waves have been observed to propagate in the atmosphere up to the ionosphere, where they have an impact on the total electron content. The authors simulate numerically the propagation of two-dimensional linear aco
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b6b373ca2c5f810697963eb8fac1c96d
https://doi.org/10.1175/jas-d-15-0255.1
https://doi.org/10.1175/jas-d-15-0255.1
Publikováno v:
Dynamics of Atmospheres and Oceans. 49:25-36
Mixing efficiency in stratified flows is a measure of the proportion of turbulent kinetic energy that goes into increasing the potential energy of the fluid by irreversible mixing. In this research direct numerical simulations (DNS) and rapid distort
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::067d5b2978d19abee5293a260aca3f0c
https://doi.org/10.1016/j.dynatmoce.2008.11.002
https://doi.org/10.1016/j.dynatmoce.2008.11.002
Publikováno v:
Journal of the Atmospheric Sciences. 66:481-494
A Fourier method is used to model mountain waves that have nearby turning points in a wind jet. In Fourier space, the propagation equations are solved by ray theory. To correct for the ray singularity at a turning point without time-consuming special
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::475998208f74ee6d1702245f99428205
https://doi.org/10.1175/2008jas2786.1
https://doi.org/10.1175/2008jas2786.1
Publikováno v:
Quarterly Journal of the Royal Meteorological Society. 130:2703-2731
A general linearized ‘shallow-layer’ perturbation model, where the approximately neutral lower layer of thickness h0 is situated below a stable upper layer (i.e. an inversion with temperature change ΔT), is developed for steady, mesoscale atmosp
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d39ac9b75d9cdae56ea757e3cc7951a8
https://doi.org/10.1256/qj.04.14
https://doi.org/10.1256/qj.04.14
Autor:
James W. Rottman, Dave Broutman
Publikováno v:
Physics of Fluids. 16:3682-3689
A method is developed to describe the linear internal wavefield generated by an oscillating source in horizontally moving, depth-dependent background. Ray theory is used to approximate the vertical eigenfunctions. A spatial solution is then obtained
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1c6ca7081af95390799937b493d13b7b
https://doi.org/10.1063/1.1785140
https://doi.org/10.1063/1.1785140
Publikováno v:
Annual Review of Fluid Mechanics. 36:233-253
▪ Abstract We review the use of ray models for internal waves, particularly formulations for calculating wave amplitudes along the ray. These are expressed in spatial, wave number, and phase-space coordinates. The choice of formulation affects not
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::96b422abef2e95f4e6f10e0842f7c135
https://doi.org/10.1146/annurev.fluid.36.050802.122022
https://doi.org/10.1146/annurev.fluid.36.050802.122022
Publikováno v:
Journal of the Atmospheric Sciences. 60:2686-2696
A previously derived approximation to the standard Fourier integral technique for linear mountain waves is extended to include nonhydrostatic effects in a background flow with height-dependent wind and stratification. The approximation involves using
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a77d3155328be2fa793fc5052acead8b
https://doi.org/10.1175/1520-0469(2003)060<2686:asfmfn>2.0.co
https://doi.org/10.1175/1520-0469(2003)060<2686:asfmfn>2.0.co
Publikováno v:
Journal of Fluid Mechanics. 473:83-101
We present some preliminary results from using large-eddy simulation to compute the late wake of a sphere towed at constant speed through a non-stratified and a uniformly stratified fluid. The wake is computed in each case for two values of the Reyno
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e896777413f3e14a0cff73046858df41
https://doi.org/10.1017/s0022112002002276
https://doi.org/10.1017/s0022112002002276
Publikováno v:
Quarterly Journal of the Royal Meteorological Society. 128:1159-1171
The ray solution for stationary hydrostatic mountain waves has a singularity along the vertical axis directly over the mountain. We use Maslov's method to improve the ray prediction. The ray solution is determined in the wave-number domain and is the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2f80a852c5c48ceb8e0b74563b1c7691
https://doi.org/10.1256/003590002320373247
https://doi.org/10.1256/003590002320373247