Dataset for Wave-Turbulence Decomposition (EEMD, iSWT, PH, VMD, SWT, Gerbi)

# Dataset for Wave-Turbulence Decomposition (EEMD, iSWT, PH, VMD, SWT, Gerbi)

This dataset contains 3 dimentional velocity data and wave-turbulence decomposition results for evaluating different decomposition methods in aquatic environments. The dataset is primarily used to estimate turbulence dissipation rate (`ε`) based on filtered velocity signals.

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## Data Structure Overview

The data is organized into the following components:

### Data_1.zip

Contains full results for **five decomposition methods**:

- `data_SWT` ← Synchrosqueezed Wavelet Transform

- `data_EEMD` ← Ensemble Empirical Mode Decomposition

- `data_PH` ← Phase-based Method

- `data_VMD` ← Variational Mode Decomposition

- `data_Gerbi` ← Traditional Gerbi method

Each folder includes:

- Reconstructed vertical velocity (`w_t`) signals

- Power spectral density and slopes

- Estimated dissipation rate `ε`

- All data saved in `.mat` format (compatible with MATLAB 2019b)

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### Data_2_01.zip to Data_2_16.zip

These 16 zip files (each ~3GB) contain **iSWT (Improved Synchrosqueezed Wavelet Transform)** results.

Due to file size limitations, the dataset is split into volumes.

Each archive includes:

- Denoised velocity signals across quantile-based thresholds

- Stepwise-reconstructed `w_t` time series

- Corresponding turbulence dissipation rate `ε` estimates

- Stored as `.mat` files

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### Code/ (scripts for processing)

This folder contains all MATLAB scripts used for turbulence estimation based on each decomposition method:

```matlab

main_SWT.m

main_EEMD.m

main_PH.m

main_VMD.m

main_Gerbi.m

main_iSWT.m

```

The from_outside_please_cite_correctly folder contains external code downloaded from publicly available sources. Please refer to the code comments for proper citation.

Each function is structured for batch processing and spectral fitting (e.g., Kolmogorov -5/3 slope detection).

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## Download Link (Google Drive)

**Access full dataset here**: https://drive.google.com/drive/folders/1aRfRlwBTSqQRmqmo6lp3E_8xCXlDNIUd?usp=sharing

> All files are publicly shared. If you encounter issues, please contact the author below.

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## License

This dataset is shared under the [**Creative Commons Attribution 4.0 (CC BY 4.0)**](https://creativecommons.org/licenses/by/4.0/) license.

You may use, modify, and distribute this data with appropriate citation.

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## Citation

If you use this dataset in your research, please cite it as:

```

[Xingxing Zhao]. (2025). Dataset for Wave-Turbulence Decomposition (EEMD, iSWT, PH, VMD, SWT, Gerbi). Zenodo. 10.5281/zenodo.15072692

```

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## Contact

- **Author**: Xingxing Zhao

- **Affiliation**: China Three Gorges University

- **Email**: [e-mail]