The potential role of spectral properties in detecting thresholds in the Earth system: application to the thermohaline circulation

Autor:	Hermann Held, Gerhard Petschel-Held, Thomas Kleinen
Rok vydání:	2003
Předmět:	Physics Earth system science Bifurcation theory Stochastic process Spectral density Thermohaline circulation Forcing (mathematics) Geophysics Mechanics Oceanography Bifurcation Physics::Geophysics Power (physics)
Zdroj:	Ocean Dynamics. 53:53-63
ISSN:	1616-7228 1616-7341
Popis:	A simple two-box model of the hemispheric thermohaline circulation (THC) is considered. The model parameterizes fluctuations in the freshwater forcing by a stochastic process. The dependence of the power spectral density and the lifetime of quasistationary states of the THC on the distance to the bifurcation point, where the THC collapses, is calculated analytically. It is shown that power spectral properties change as the system is moved closer to the bifurcation point. These changes allow an estimate of the distance to the bifurcation point.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::98bf5dedef7074de19c3566f8625d1e9 https://doi.org/10.1007/s10236-002-0023-6 Zobrazit plný text záznamu Plný text ve formátu PDF