Abstract:
The generation and propagation of acoustic gravity waves (AGWs) in a two-dimensional Earth atmosphere was numerically simulated on the basis of a magnetohydrodynamic model. Due to the divergent form of the equations and the conservativeness of the numerical method, strong perturbations, including discontinuous solutions, were considered and computed by applying a shock capturing algorithm. The results were compared with previous ones obtained using the Euler equations. The comparison results confirmed the generation of atmospheric AGWs by pulsed ground-based sources and supported the possibility of using simpler gasdynamic models for the given class of problems in a fairly wide range of governing parameters.
Key words:
MHD-based simulation of ionospheric perturbations, hyperbolic equations, conservative numerical method, numerical solution of the Euler equations.
Citation:
B. Yu. Krysanov, V. E. Kunitsyn, A. S. Kholodov, “MHD-based simulation of ionospheric perturbations generated in the atmospheric surface layer”, Zh. Vychisl. Mat. Mat. Fiz., 51:2 (2011), 282–302; Comput. Math. Math. Phys., 51:2 (2011), 264–283
This publication is cited in the following 7 articles:
I. B. Petrov, “Grid-characteristic methods. 55 years of developing and solving complex dynamic problems”, CMIT, 6:1 (2023), 6
Igor B. Petrov, Smart Innovation, Systems and Technologies, 133, Smart Modeling for Engineering Systems, 2019, 8
Shalimov S.L., Nesterov I.A., Vorontsov A.M., “On the GPS-based ionospheric perturbation after the Tohoku earthquake of March 11, 2011”, Izv.-Phys. Solid Earth, 53:2 (2017), 262–273
Pavlov V.A., Lebedev S.V., “Nonlinear Evolution of the Atmosphere and Ionosphere Above a Seismic Epicenter. II. Numerical Simulation”, Geomagn. Aeron., 57:5 (2017), 602–609
Gokhberg M.B., Ol'shanskaya E.V., Steblov G.M., Shalimov S.L., “The Ionospheric Response to the Acoustic Signal From Submarine Earthquakes According to the Gps Data”, Izv.-Phys. Solid Earth, 50:1 (2014), 1–8
Kunitsyn V.E., Vorontsov A.M., “Modeling the Ionospheric Propagation of Acoustic Gravity Waves From the Tohoku Tsunami of 2011”, Mosc. Univ. Phys. Bull., 69:3 (2014), 263–269
A. S. Kholodov, “Ob evolyutsii vozmuschenii, vyzvannykh dvizheniem meteoroidov v atmosfere Zemli”, Kompyuternye issledovaniya i modelirovanie, 5:6 (2013), 993–1030