TY  - JOUR
A1  - Boers, Niklas
A1  - Bookhagen, Bodo
A1  - Marwan, Norbert
A1  - Kurths, Jürgen
T1  - Spatiotemporal characteristics and synchronization of extreme rainfall in South America with focus on the Andes Mountain range
JF  - Climate dynamics : observational, theoretical and computational research on the climate system
N2  - The South American Andes are frequently exposed to intense rainfall events with varying moisture sources and precipitation-forming processes. In this study, we assess the spatiotemporal characteristics and geographical origins of rainfall over the South American continent. Using high-spatiotemporal resolution satellite data (TRMM 3B42 V7), we define four different types of rainfall events based on their (1) high magnitude, (2) long temporal extent, (3) large spatial extent, and (4) high magnitude, long temporal and large spatial extent combined. In a first step, we analyze the spatiotemporal characteristics of these events over the entire South American continent and integrate their impact for the main Andean hydrologic catchments. Our results indicate that events of type 1 make the overall highest contributions to total seasonal rainfall (up to 50%). However, each consecutive episode of the infrequent events of type 4 still accounts for up to 20% of total seasonal rainfall in the subtropical Argentinean plains. In a second step, we employ complex network theory to unravel possibly non-linear and long-ranged climatic linkages for these four event types on the high-elevation Altiplano-Puna Plateau as well as in the main river catchments along the foothills of the Andes. Our results suggest that one to two particularly large squall lines per season, originating from northern Brazil, indirectly trigger large, long-lasting thunderstorms on the Altiplano Plateau. In general, we observe that extreme rainfall in the catchments north of approximately 20 degrees S typically originates from the Amazon Basin, while extreme rainfall at the eastern Andean foothills south of 20 degrees S and the Puna Plateau originates from southeastern South America.
KW  - Extreme rainfall
KW  - Synchronization
KW  - Complex networks
KW  - South American monsoon system
Y1  - 2016
U6  - https://doi.org/10.1007/s00382-015-2601-6
SN  - 0930-7575
SN  - 1432-0894
VL  - 46
SP  - 601
EP  - 617
PB  - Springer
CY  - New York
ER  - 
TY  - JOUR
A1  - Kuznetsov, Alexander P.
A1  - Turukina, Ludmila V.
A1  - Chernyshov, Nikolai Yu
A1  - Sedova, Yuliya V.
T1  - Oscillations and Synchronization in a System of Three Reactively Coupled Oscillators
JF  - International journal of bifurcation and chaos : in applied sciences and engineering
N2  - We consider a system of three interacting van der Pol oscillators with reactive coupling. Phase equations are derived, using proper order of expansion over the coupling parameter. The dynamics of the system is studied by means of the bifurcation analysis and with the method of Lyapunov exponent charts. Essential and physically meaningful features of the reactive coupling are discussed.
KW  - Synchronization
KW  - quasi-periodic oscillation
KW  - bifurcation
KW  - chaos
Y1  - 2016
U6  - https://doi.org/10.1142/S0218127416500103
SN  - 0218-1274
SN  - 1793-6551
VL  - 26
SP  - 31
EP  - 39
PB  - World Scientific
CY  - Singapore
ER  - 
TY  - JOUR
A1  - Nagornov, Roman
A1  - Osipoy, Grigory
A1  - Komarov, Maxim
A1  - Pikovskij, Arkadij
A1  - Shilnikov, Andrey
T1  - Mixed-mode synchronization between two inhibitory neurons with post-inhibitory rebound
JF  - Communications in nonlinear science & numerical simulation
N2  - We study an array of activity rhythms generated by a half-center oscillator (HCO), represented by a pair of reciprocally coupled neurons with post-inhibitory rebounds (PIR). Such coupling induced bursting possesses two time scales, one for fast spiking and another for slow quiescent periods, is shown to exhibit an array of synchronization properties. We discuss several HCO configurations constituted by two endogenous bursters, by tonic-spiking and quiescent neurons, as well as mixed-mode configurations composed of neurons of different type. We demonstrate that burst synchronization can be accompanied by complex, often chaotic, interactions of fast spikes within synchronized bursts. (C) 2015 Elsevier B.V. All rights reserved.
KW  - Synchronization
KW  - Hodgkin-Huxley model
KW  - Half-center oscillator
KW  - Post-inhibitory rebound
Y1  - 2016
U6  - https://doi.org/10.1016/j.cnsns.2015.11.024
SN  - 1007-5704
SN  - 1878-7274
VL  - 36
SP  - 175
EP  - 191
PB  - Elsevier
CY  - Amsterdam
ER  -