Geometry-independent realistic noise models for synthetic data generation

Abstract
Synthetic datasets are vital for the development and benchmarking of new processing and imaging algorithms as well as in the training of machine learning models. It is therefore important that such datasets are generated with realistic noise conditions making them resemble as much as possible their corresponding field datasets. Building on previously developed covariance-based noise modelling, we propose an extension of such an approach that aims to translate a noise model onto a user-defined geometry by means of Gaussian Process Regression. Starting from a synthetic data, we show that noise models can be generated and transformed into a desired geometry whilst keeping the same underlying statistical properties (i.e., covariance and variogram). The modelling procedure is subsequently applied to the ToC2ME passive noise dataset transforming the actual 69-sensor acquisition geometry into a gridded, 56-sensor array. The ability to generate realistic, geometryindependent noise models opens up a host of new opportunities in the area of survey design. We argue that by coupling the noise generation and monitoring algorithms, the placement of sensors could be further optimised based on the expected microseismic signatures as well as the surrounding noise behaviour.

Citation
Birnie, C. E., & Ravasi, M. (2021). Geometry-independent realistic noise models for synthetic data generation. 82nd EAGE Annual Conference & Exhibition. doi:10.3997/2214-4609.202112682

Acknowledgements
The authors would like to thank the University of Calgary for releasing the ToC2ME dataset.

Publisher
European Association of Geoscientists & Engineers

Conference/Event Name
82nd EAGE Annual Conference & Exhibition

DOI
10.3997/2214-4609.202112682

Additional Links
https://www.earthdoc.org/content/papers/10.3997/2214-4609.202112682

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