Probabilistic Inverse Method for Source Localization Applied to ETEX and the 2017 Case of Ru-106 including Analyses of Sensitivity to Measurement Data
In recent years, cases of unexplained, elevated levels of radioactive particles have demonstrated an increasing need for efficient and robust source localization methods. In this study, a Bayesian method for source localization is developed and applied to two cases. First, the method is validated ag...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-11-01
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| Series: | Atmosphere |
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| Online Access: | https://www.mdpi.com/2073-4433/12/12/1567 |
| _version_ | 1797506643171213312 |
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| author | Kasper Skjold Tølløse Eigil Kaas Jens Havskov Sørensen |
| author_facet | Kasper Skjold Tølløse Eigil Kaas Jens Havskov Sørensen |
| author_sort | Kasper Skjold Tølløse |
| collection | DOAJ |
| description | In recent years, cases of unexplained, elevated levels of radioactive particles have demonstrated an increasing need for efficient and robust source localization methods. In this study, a Bayesian method for source localization is developed and applied to two cases. First, the method is validated against the European tracer experiment (ETEX) and then applied to the still unaccounted for release of Ru-106 in the fall of 2017. The ETEX dataset, however, differs significantly from the Ru-106 dataset with regard to time resolution and the distance from the release site to the nearest measurements. Therefore, sensitivity analyses are conducted in order to test the method’s sensitivity to these parameters. The analyses show that the resulting source localization depends on both the observed temporal resolution and the existence of sampling stations close to the source. However, the method is robust, in the sense that reducing the amount of information in the dataset merely reduces the accuracy, and hence, none of the results are contradictory. When applied to the Ru-106 case, the results indicate that the Southern Ural region is the most plausible release area, and, as hypothesized by other studies, that the Mayak nuclear facility is the most likely release location. |
| first_indexed | 2024-03-10T04:35:26Z |
| format | Article |
| id | doaj.art-288c365f057844a9b510cf0f8c290b50 |
| institution | Directory Open Access Journal |
| issn | 2073-4433 |
| language | English |
| last_indexed | 2024-03-10T04:35:26Z |
| publishDate | 2021-11-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Atmosphere |
| spelling | doaj.art-288c365f057844a9b510cf0f8c290b502023-11-23T03:45:32ZengMDPI AGAtmosphere2073-44332021-11-011212156710.3390/atmos12121567Probabilistic Inverse Method for Source Localization Applied to ETEX and the 2017 Case of Ru-106 including Analyses of Sensitivity to Measurement DataKasper Skjold Tølløse0Eigil Kaas1Jens Havskov Sørensen2Danish Meteorological Institute, DK-2100 Copenhagen, DenmarkDanish Meteorological Institute, DK-2100 Copenhagen, DenmarkDanish Meteorological Institute, DK-2100 Copenhagen, DenmarkIn recent years, cases of unexplained, elevated levels of radioactive particles have demonstrated an increasing need for efficient and robust source localization methods. In this study, a Bayesian method for source localization is developed and applied to two cases. First, the method is validated against the European tracer experiment (ETEX) and then applied to the still unaccounted for release of Ru-106 in the fall of 2017. The ETEX dataset, however, differs significantly from the Ru-106 dataset with regard to time resolution and the distance from the release site to the nearest measurements. Therefore, sensitivity analyses are conducted in order to test the method’s sensitivity to these parameters. The analyses show that the resulting source localization depends on both the observed temporal resolution and the existence of sampling stations close to the source. However, the method is robust, in the sense that reducing the amount of information in the dataset merely reduces the accuracy, and hence, none of the results are contradictory. When applied to the Ru-106 case, the results indicate that the Southern Ural region is the most plausible release area, and, as hypothesized by other studies, that the Mayak nuclear facility is the most likely release location.https://www.mdpi.com/2073-4433/12/12/1567source localizationatmospheric dispersion modellinginverse modellingBayesian inferenceETEXRu-106 |
| spellingShingle | Kasper Skjold Tølløse Eigil Kaas Jens Havskov Sørensen Probabilistic Inverse Method for Source Localization Applied to ETEX and the 2017 Case of Ru-106 including Analyses of Sensitivity to Measurement Data Atmosphere source localization atmospheric dispersion modelling inverse modelling Bayesian inference ETEX Ru-106 |
| title | Probabilistic Inverse Method for Source Localization Applied to ETEX and the 2017 Case of Ru-106 including Analyses of Sensitivity to Measurement Data |
| title_full | Probabilistic Inverse Method for Source Localization Applied to ETEX and the 2017 Case of Ru-106 including Analyses of Sensitivity to Measurement Data |
| title_fullStr | Probabilistic Inverse Method for Source Localization Applied to ETEX and the 2017 Case of Ru-106 including Analyses of Sensitivity to Measurement Data |
| title_full_unstemmed | Probabilistic Inverse Method for Source Localization Applied to ETEX and the 2017 Case of Ru-106 including Analyses of Sensitivity to Measurement Data |
| title_short | Probabilistic Inverse Method for Source Localization Applied to ETEX and the 2017 Case of Ru-106 including Analyses of Sensitivity to Measurement Data |
| title_sort | probabilistic inverse method for source localization applied to etex and the 2017 case of ru 106 including analyses of sensitivity to measurement data |
| topic | source localization atmospheric dispersion modelling inverse modelling Bayesian inference ETEX Ru-106 |
| url | https://www.mdpi.com/2073-4433/12/12/1567 |
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