34 citations · 81 across the 8 of their papers we have counts for
9 papers
From trends to optimized forecasts: Quantifying the skill and advancing the utility of dynamics-based early warnings for tipping events
Franco Du Plessis, Victoria Volodina, Chris A. Boulton +5
In this paper we explore and extend the state of the art for understanding the skill and utility of early warnings of critical transitions (tipping points) in forced nonlinear syst…
Evaluating the skill of a geometric early warning for tipping in a rapidly forced nonlinear system
Paul D. L. Ritchie, Sneha Kachhara, Peter Ashwin
The future behavioural fate of a forced nonlinear system can depend sensitively on the forcing profile as well as natural fluctuations within the system. This is especially the cas…
Evidence for dynamical changes in Betelgeuse using multi-wavelength data
Sneha Kachhara, Sandip V. George, Ranjeev Misra +1
The reasons behind the Great Dimming and subsequent rising in the brightness of Betelgeuse between October 2019 and March 2020 still continue to baffle astronomers. It has been sho…
Early warning signals for critical transitions in complex systems
Sandip V. George, Sneha Kachhara, G. Ambika
In this topical review, we present a brief overview of the different methods and measures to detect the occurrence of critical transitions in complex systems. We start by introduci…
Frequency chimera state induced by differing dynamical timescales
Sneha Kachhara, G. Ambika
We report the occurrence of a self-emerging frequency chimera state in spatially extended systems of coupled oscillators, where the coherence and incoherence are defined with respe…
Multiplex Recurrence Networks from multi-lead ECG data
Sneha Kachhara, G. Ambika
We present an integrated approach to analyse the multi-lead ECG data using the frame work of multiplex recurrence networks (MRNs). We explore how their intralayer and interlayer to…
Early Warning Signals Indicate a Critical Transition in Betelgeuse
Sandip V. George, Sneha Kachhara, Ranjeev Misra +1
Critical transitions occur in complex dynamical systems, when the system dynamics undergoes a regime shift. These can often occur with little change in the mean amplitude of system…
Bimodality and Scaling in Recurrence Networks from ECG data
Sneha Kachhara, G. Ambika
Human heart is a complex system that can be studied using its electrical activity recorded as Electrocardiogram (ECG). Any variations or anomalies in the ECG can indicate abnormali…
Higher order spectral analysis of ECG signals
Yamini Kotriwar, Sneha Kachhara, K. P. Harikrishnan +1
Higher Order Spectral (HOS) analysis is often applied effectively to analyze many bio-medical signals to detect nonlinear and non-Gaussian processes. One of the most basic HOS meth…