Prospective Neural Network Model for Seismic Precursory Signal Detection in Geomagnetic Field Records
Abstract
:1. Introduction
2. Detectability of Electromagnetic Emissions from Pre-Earthquake Phenomena
3. Data and Methods
Layer Type | No. of Output Filters | Conv. or Pooling Window Size | Padding | Activation Function | Output Shape | No. of Parameters |
---|---|---|---|---|---|---|
Conv2D | 32 | 3 × 3 | Yes | ReLU | (3, 10,080, 32) | 320 |
MaxPooling | - | 1 × 2 | - | - | (3, 5040, 32) | 0 |
Conv2D | 64 | 1 × 3 | Yes | ReLU | (3, 5040, 64) | 6208 |
MaxPooling | - | 1 × 2 | - | - | (3, 2520, 64) | 0 |
Conv2D | 64 | 1 × 3 | Yes | ReLU | (3, 2520, 64) | 12,352 |
Flattened | - | - | - | - | 483,840 | 0 |
Dense | - | - | - | Softmax | 64 | 30,965,824 |
Dense | - | - | - | - | 2 | 130 |
4. Proof of Concept Design
5. Preliminary Results and Future Work
- Geomagnetic field variations are not correlated with the occurrence of small-magnitude earthquakes at the predicted distances;
- An observational bias exists, implying that other geomagnetic signals obscure precursory signals and that stricter conditions need to be imposed on the detectability threshold values;
- The data available at present are insufficient to train the proposed convolutional neural network model.
6. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Magnetic Observatory | Code | Country | Latitude °N | Longitude °E | Data Availability * | Data Provider | Mmax |
---|---|---|---|---|---|---|---|
Muntele Rosu | MLR | Romania | 45.491 | 25.945 | 2013–2022 | NIEP | 5.7 |
Duronia | DUR | Italy | 41.390 | 14.280 | 2011–2022 | INTERMAGNET | 6.6 |
Iznik | IZN | Türkiye | 40.500 | 29.720 | 2007–2022 | INTERMAGNET | 5.9 |
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Petrescu, L.; Moldovan, I.-A. Prospective Neural Network Model for Seismic Precursory Signal Detection in Geomagnetic Field Records. Mach. Learn. Knowl. Extr. 2022, 4, 912-923. https://doi.org/10.3390/make4040046
Petrescu L, Moldovan I-A. Prospective Neural Network Model for Seismic Precursory Signal Detection in Geomagnetic Field Records. Machine Learning and Knowledge Extraction. 2022; 4(4):912-923. https://doi.org/10.3390/make4040046
Chicago/Turabian StylePetrescu, Laura, and Iren-Adelina Moldovan. 2022. "Prospective Neural Network Model for Seismic Precursory Signal Detection in Geomagnetic Field Records" Machine Learning and Knowledge Extraction 4, no. 4: 912-923. https://doi.org/10.3390/make4040046