Improvement of the 2007–2015 Earthquake Catalog Along the 300 km Long Postglacial Merasjärvi–Stuoragurra Fault Complex in Northern Fennoscandia Using Automatic Event Detection
We present an updated and validated seismic catalog for the northern Fennoscandian region, focusing on postglacial faults from the Merasjärvi fault system in the southwest to the Iešjávri fault system in the northeast. This work involved a comprehensive review of continuous waveforms derived from op...
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2024-11-01
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| author | Daniela Calle-Gardella Claudia Pavez-Orrego Diana Comte Felix Halpaap Odleiv Olesen Alina Espinoza Steven Roecker |
| author_facet | Daniela Calle-Gardella Claudia Pavez-Orrego Diana Comte Felix Halpaap Odleiv Olesen Alina Espinoza Steven Roecker |
| author_sort | Daniela Calle-Gardella |
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| description | We present an updated and validated seismic catalog for the northern Fennoscandian region, focusing on postglacial faults from the Merasjärvi fault system in the southwest to the Iešjávri fault system in the northeast. This work involved a comprehensive review of continuous waveforms derived from open datasets from 2007 to 2015 and processed using the Regressive ESTimator algorithm. The primary objective was to refine the delineation of seismicity along the above-mentioned postglacial faults and highlight their seismic potential. Our analysis revealed distinct waveform patterns originating primarily from two main sources: approximately 15% were associated with areas mapped as postglacial faults, and the remainder of the events outside these areas, 89%, were concentrated in areas with active mines. Compared to previously reported events in the Fennoscandian Earthquake Catalogue (FENCAT), we observed a 22% increase in seismic activity within postglacial fault zones. These results demonstrate that the Regressive ESTimator algorithm not only improves the detection of tectonic seismicity but also effectively identifies seismic signals resulting from mining activities in the study area. The Merasjärvi, Lainio–Suijavaara, Palojärvi, and Maze and Iešjávri fault systems appear to form a continuous deformation complex of approximately 300 km long, which we propose naming the Merasjärvi–Stuoragurra fault complex. |
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| issn | 2076-3263 |
| language | English |
| publishDate | 2024-11-01 |
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| spelling | doaj-art-12927d51d70f4e6ba512ae0e9b49b2892025-08-20T02:28:05ZengMDPI AGGeosciences2076-32632024-11-01141129310.3390/geosciences14110293Improvement of the 2007–2015 Earthquake Catalog Along the 300 km Long Postglacial Merasjärvi–Stuoragurra Fault Complex in Northern Fennoscandia Using Automatic Event DetectionDaniela Calle-Gardella0Claudia Pavez-Orrego1Diana Comte2Felix Halpaap3Odleiv Olesen4Alina Espinoza5Steven Roecker6Advanced Mining Technology Center, Facultad Ciencias Físicas y Matemáticas, Universidad de Chile, Santiago P.O. Box 8370451, ChileDepartment of Physics, Faculty of Sciences, Universidad de Tarapacá, Arica P.O. Box 1010069, ChileAdvanced Mining Technology Center, Facultad Ciencias Físicas y Matemáticas, Universidad de Chile, Santiago P.O. Box 8370451, ChileDepartment of Earth Science, University of Bergen, NO-5007 Bergen, NorwayNorges Geologiske Undersøkelse, NO-7491 Trondheim, NorwayAdvanced Mining Technology Center, Facultad Ciencias Físicas y Matemáticas, Universidad de Chile, Santiago P.O. Box 8370451, ChileEarth and Environmental Sciences, School of Science, Rensselaer Polytechnic Institute, Troy, NY 12180, USAWe present an updated and validated seismic catalog for the northern Fennoscandian region, focusing on postglacial faults from the Merasjärvi fault system in the southwest to the Iešjávri fault system in the northeast. This work involved a comprehensive review of continuous waveforms derived from open datasets from 2007 to 2015 and processed using the Regressive ESTimator algorithm. The primary objective was to refine the delineation of seismicity along the above-mentioned postglacial faults and highlight their seismic potential. Our analysis revealed distinct waveform patterns originating primarily from two main sources: approximately 15% were associated with areas mapped as postglacial faults, and the remainder of the events outside these areas, 89%, were concentrated in areas with active mines. Compared to previously reported events in the Fennoscandian Earthquake Catalogue (FENCAT), we observed a 22% increase in seismic activity within postglacial fault zones. These results demonstrate that the Regressive ESTimator algorithm not only improves the detection of tectonic seismicity but also effectively identifies seismic signals resulting from mining activities in the study area. The Merasjärvi, Lainio–Suijavaara, Palojärvi, and Maze and Iešjávri fault systems appear to form a continuous deformation complex of approximately 300 km long, which we propose naming the Merasjärvi–Stuoragurra fault complex.https://www.mdpi.com/2076-3263/14/11/293postglacial faultsnorthern FennoscandiaStuoragurra faultMaze and Iešjávri faultPalojärvi faultLainio–Suijavaara fault |
| spellingShingle | Daniela Calle-Gardella Claudia Pavez-Orrego Diana Comte Felix Halpaap Odleiv Olesen Alina Espinoza Steven Roecker Improvement of the 2007–2015 Earthquake Catalog Along the 300 km Long Postglacial Merasjärvi–Stuoragurra Fault Complex in Northern Fennoscandia Using Automatic Event Detection Geosciences postglacial faults northern Fennoscandia Stuoragurra fault Maze and Iešjávri fault Palojärvi fault Lainio–Suijavaara fault |
| title | Improvement of the 2007–2015 Earthquake Catalog Along the 300 km Long Postglacial Merasjärvi–Stuoragurra Fault Complex in Northern Fennoscandia Using Automatic Event Detection |
| title_full | Improvement of the 2007–2015 Earthquake Catalog Along the 300 km Long Postglacial Merasjärvi–Stuoragurra Fault Complex in Northern Fennoscandia Using Automatic Event Detection |
| title_fullStr | Improvement of the 2007–2015 Earthquake Catalog Along the 300 km Long Postglacial Merasjärvi–Stuoragurra Fault Complex in Northern Fennoscandia Using Automatic Event Detection |
| title_full_unstemmed | Improvement of the 2007–2015 Earthquake Catalog Along the 300 km Long Postglacial Merasjärvi–Stuoragurra Fault Complex in Northern Fennoscandia Using Automatic Event Detection |
| title_short | Improvement of the 2007–2015 Earthquake Catalog Along the 300 km Long Postglacial Merasjärvi–Stuoragurra Fault Complex in Northern Fennoscandia Using Automatic Event Detection |
| title_sort | improvement of the 2007 2015 earthquake catalog along the 300 km long postglacial merasjarvi stuoragurra fault complex in northern fennoscandia using automatic event detection |
| topic | postglacial faults northern Fennoscandia Stuoragurra fault Maze and Iešjávri fault Palojärvi fault Lainio–Suijavaara fault |
| url | https://www.mdpi.com/2076-3263/14/11/293 |
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