Process-based modelling of nonharmonic internal tides using adjoint, statistical, and stochastic approaches – Part 2: Adjoint frequency response analysis, stochastic models, and synthesis

Shimizu, Kenji

doi:https://doi.org/10.5194/os-21-2255-2025

Articles | Volume 21, issue 5

https://doi.org/10.5194/os-21-2255-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

https://doi.org/10.5194/os-21-2255-2025

© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.

Articles | Volume 21, issue 5

Research article

|

07 Oct 2025

Research article |

| 07 Oct 2025

Process-based modelling of nonharmonic internal tides using adjoint, statistical, and stochastic approaches – Part 2: Adjoint frequency response analysis, stochastic models, and synthesis

Kenji Shimizu

Data sets

Data from: Process-based modelling of nonharmonic internal tides using adjoint, statistical, and stochastic approaches. Part II: adjoint frequency response analysis, stochastic models, and synthesis Kenji Shimizu https://doi.org/10.5281/zenodo.13999971

The GEBCO_2019 Grid - a continuous terrain model of the global oceans and land GEBCO Bathymetric Compilation Group https://doi.org/10.5285/836f016a-33be-6ddc-e053-6c86abc0788e

Short summary

This study develops a new model suite for the random component of internal tides (internal waves at tidal frequencies). Its example application shows that important parameters for the randomization are the magnitude and correlation length of phase-speed variability and the directional dependence of the phase correlation. The model suite provides a new tool for investigating process and/or parameter dependence of observed random internal tides and for identifying their important sources.