Changes in the seismic complexity prior to and during the 2014 Holuhraun eruption in Iceland ...
<!--!introduction!--> Changes in seismic complexity could reveal the dynamic changes inside a volcanic system prior to an eruption, which can be utilized to improve eruption forecasting. Permutation Entropy (PE) is a robust method to quantify the complexity of a time series, by calculating it...
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| Format: | Conference Object |
| Language: | unknown |
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GFZ German Research Centre for Geosciences
2023
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| Online Access: | https://dx.doi.org/10.57757/iugg23-3850 https://gfzpublic.gfz-potsdam.de/pubman/item/item_5020695 |
| Summary: | <!--!introduction!--> Changes in seismic complexity could reveal the dynamic changes inside a volcanic system prior to an eruption, which can be utilized to improve eruption forecasting. Permutation Entropy (PE) is a robust method to quantify the complexity of a time series, by calculating it directly using the amplitude. Examples of successful PE applications are eruptions forecasting at Strokkur Geyser, Iceland, the 1996 eruption of Gjálp, Iceland, and the eruptions of Shinmoedake volcano, Japan, in 2011, 2017, and 2018. While PE could show temporal changes prior to an eruption, these features are not always prominent. To improve this method, we calculated not only PE by using seismic amplitudes, but also Phase Permutation Entropy (PPE) by using seismic instantaneous phases. We calculated both PE and PPE for seismic station FLUR from January 2014 to December 2015, which covers the eruption period of Holuhraun in Iceland. During the unrest period, both PE and PPE show changes in entropy, but their ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ... |
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