Analysis of noise-induced eruptions in a geyser model / Alexandrov Dmitri V.,Bashkirtseva Irina A.,Ryashko Lev B. // EUROPEAN PHYSICAL JOURNAL B. - 2016. - V. 89, l. 3.

ISSN/EISSN:

1434-6028 / 1434-6036

Type:

Article

Abstract:

Motivated by important geophysical applications we study a non-linear model of geyser dynamics under the influence of external stochastic forcing. It is shown that the deterministic dynamics is substantially dependent on system parameters leading to the following evolutionary scenaria: (i) oscillations near a stable equilibrium and a transient tendency of the phase trajectories to a spiral sink or a stable node (pre-eruption regime), and (ii) fast escape from equilibrium (eruption regime). Even a small noise changes the system dynamics drastically. Namely, a low-intensity noise generates the small amplitude stochastic oscillations in the regions adjoining to the stable equilibrium point. A small buildup of noise intensity throws the system over its separatrix and leads to eruption. The role of the friction coefficient and relative pressure in the deterministic and stochastic dynamics is studied by direct numerical simulations and stochastic sensitivity functions technique.

Author keywords:

YELLOWSTONE-NATIONAL-PARK; OSCILLATIONS; PERIODICITY; SEISMICITY; DYNAMICS; USA

DOI:

10.1140/epjb/e2016-60982-0

Web of Science ID:

ISI:000375219200001

Соавторы в МНС:

Другие поля

Поле	Значение
Month	MAR 7
Publisher	SPRINGER
Address	233 SPRING ST, NEW YORK, NY 10013 USA
Language	English
Article-Number	62
EISSN	1434-6036
Keywords-Plus	YELLOWSTONE-NATIONAL-PARK; OSCILLATIONS; PERIODICITY; SEISMICITY; DYNAMICS; USA
Research-Areas	Physics
Web-of-Science-Categories	Physics, Condensed Matter
Author-Email	lev.ryashko@urfu.ru
ResearcherID-Numbers	Alexandrov, Dmitri/D-2516-2016
ORCID-Numbers	Alexandrov, Dmitri/0000-0002-6628-745X
Funding-Acknowledgement	Ministry of Education and Science of the Russian Federation {[}315]; Government of the Russian Federation {[}02.A03.21.0006]
Funding-Text	This work was supported by the Ministry of Education and Science of the Russian Federation under the project 315 and by the act 211 of Government of the Russian Federation under the contract No. 02.A03.21.0006.
Number-of-Cited-References	32
Usage-Count-Since-2013	1
Journal-ISO	Eur. Phys. J. B
Doc-Delivery-Number	DK8ZR