Articles | Volume 25, issue 1
https://doi.org/10.5194/npg-25-89-2018
https://doi.org/10.5194/npg-25-89-2018
Research article
 | 
07 Feb 2018
Research article |  | 07 Feb 2018

Tipping point analysis of ocean acoustic noise

Valerie N. Livina, Albert Brouwer, Peter Harris, Lian Wang, Kostas Sotirakopoulos, and Stephen Robinson

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Latest update: 28 Mar 2024
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Short summary
We have applied tipping point analysis to a large record of ocean acoustic data to identify the main components of the acoustic dynamical system: long-term and seasonal trends, system states and fluctuations. We reconstructed a one-dimensional stochastic model equation to approximate the acoustic dynamical system. We have found a signature of El Niño events in the deep ocean acoustic data near the southwest Australian coast, which proves the investigative power of the tipping point methodology.