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Slow Slip Events in New Zealand: Irregular, yet Predictable?

Publication ,  Journal Article
Truttmann, S; Poulet, T; Wallace, L; Herwegh, M; Veveakis, M
Published in: Geophysical Research Letters
March 28, 2024

Current earthquake forecasting approaches are mainly based on probabilistic assumptions, as earthquakes seem to occur randomly. Such apparent randomness can however be caused by deterministic chaos, rendering deterministic short-term forecasts possible. Due to the short historical and instrumental record of earthquakes, chaos detection has proven challenging, but more frequently occurring slow slip events (SSE) are promising candidates to probe for determinism. Here, we characterize the SSE signatures obtained from GNSS position time series in the Hikurangi Subduction Zone (New Zealand) to investigate whether the seemingly random SSE occurrence is governed by chaotic determinism. We find evidence for deterministic chaos for stations recording shallow SSEs, suggesting that short-term deterministic forecasting of SSEs, similar to weather forecasts, might indeed be possible over timescales of a few weeks. We anticipate that our findings could open the door for next-generation SSE forecasting, adding new tools to existing probabilistic approaches.

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Published In

Geophysical Research Letters

DOI

EISSN

1944-8007

ISSN

0094-8276

Publication Date

March 28, 2024

Volume

51

Issue

6

Related Subject Headings

  • Meteorology & Atmospheric Sciences
 

Citation

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Truttmann, S., Poulet, T., Wallace, L., Herwegh, M., & Veveakis, M. (2024). Slow Slip Events in New Zealand: Irregular, yet Predictable? Geophysical Research Letters, 51(6). https://doi.org/10.1029/2023GL107741
Truttmann, S., T. Poulet, L. Wallace, M. Herwegh, and M. Veveakis. “Slow Slip Events in New Zealand: Irregular, yet Predictable?Geophysical Research Letters 51, no. 6 (March 28, 2024). https://doi.org/10.1029/2023GL107741.
Truttmann S, Poulet T, Wallace L, Herwegh M, Veveakis M. Slow Slip Events in New Zealand: Irregular, yet Predictable? Geophysical Research Letters. 2024 Mar 28;51(6).
Truttmann, S., et al. “Slow Slip Events in New Zealand: Irregular, yet Predictable?Geophysical Research Letters, vol. 51, no. 6, Mar. 2024. Scopus, doi:10.1029/2023GL107741.
Truttmann S, Poulet T, Wallace L, Herwegh M, Veveakis M. Slow Slip Events in New Zealand: Irregular, yet Predictable? Geophysical Research Letters. 2024 Mar 28;51(6).
Journal cover image

Published In

Geophysical Research Letters

DOI

EISSN

1944-8007

ISSN

0094-8276

Publication Date

March 28, 2024

Volume

51

Issue

6

Related Subject Headings

  • Meteorology & Atmospheric Sciences