The 2020 and 2021 Seismic Swarms in the Tancítaro-Paricutín Area (Uruapan- Michoacán, México) Evidence Magma Intrusion in an Area with High Density of Monogenetic Cones
The Michoacán-Guanajuato Volcanic Field (MGVF) in central-western Mexico, with more than 1,000 monogenetic volcanoes, has been well known since 1943 when an eruption formed the Paricutín volcano, 11 km to the NW of the summit of Tancítaro stratovolcano. In the highly fractured zone around Tancítaro,...
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| Format: | Article |
| Language: | English |
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Universidad Nacional Autónoma de México, Instituto de Geofísica
2024-04-01
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| Series: | Geofísica Internacional |
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| Online Access: | http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1759 |
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| author | Gema Victoria Caballero-Jiménez Ma. Cristina Zarazúa Ana Teresa Mendoza Servando De La Cruz- Reyna |
| author_facet | Gema Victoria Caballero-Jiménez Ma. Cristina Zarazúa Ana Teresa Mendoza Servando De La Cruz- Reyna |
| author_sort | Gema Victoria Caballero-Jiménez |
| collection | DOAJ |
| description | The Michoacán-Guanajuato Volcanic Field (MGVF) in central-western Mexico, with more than 1,000 monogenetic volcanoes, has been well known since 1943 when an eruption formed the Paricutín volcano, 11 km to the NW of the summit of Tancítaro stratovolcano. In the highly fractured zone around Tancítaro, referred to as the Paricutín-Tancítaro region (PTR), two major seismic swarms have been recorded, the first between January 5 and February 22, 2020, and the second between May 30 and July 22, 2021. The Mexican National Seismological Service (SSN) reported a total of 4,956 earthquakes with coda magnitudes between 2.6 and 4.2. With the aim to determine the causes of the swarms and the potential hazard they may pose on the region, we first analyze their spatial distributions by relocating all of the events using the Double Difference method and testing different 1-D velocity models to select the one with the lowest residual errors. Secondly, we analyze the temporal distributions finding that their temporal occurrence fits a Mogi’s type 3 volcanic seismic swarm. We conclude that each swarm is due to stresses induced by dike-fed intrusions of moderate volumes of magma in a pre-existing temporal magma reservoir, probably a sill. |
| first_indexed | 2024-04-24T15:42:12Z |
| format | Article |
| id | doaj.art-e03b934e2d19462cba6bd6c0329d43af |
| institution | Directory Open Access Journal |
| issn | 0016-7169 2954-436X |
| language | English |
| last_indexed | 2024-04-24T15:42:12Z |
| publishDate | 2024-04-01 |
| publisher | Universidad Nacional Autónoma de México, Instituto de Geofísica |
| record_format | Article |
| series | Geofísica Internacional |
| spelling | doaj.art-e03b934e2d19462cba6bd6c0329d43af2024-04-01T22:48:30ZengUniversidad Nacional Autónoma de México, Instituto de GeofísicaGeofísica Internacional0016-71692954-436X2024-04-0163291392710.22201/igeof.2954436xe.2024.63.2.17591759The 2020 and 2021 Seismic Swarms in the Tancítaro-Paricutín Area (Uruapan- Michoacán, México) Evidence Magma Intrusion in an Area with High Density of Monogenetic ConesGema Victoria Caballero-Jiménez0https://orcid.org/0000-0001-9273-8771Ma. Cristina Zarazúa1https://orcid.org/0000-0001-7438-5175Ana Teresa Mendoza2https://orcid.org/0000-0001-5925-4791Servando De La Cruz- Reyna3https://orcid.org/0000-0003-1403-0318Centro Nacional de Prevención de Desastres (CENAPRED), Avenida Delfín Madrigal No. 665, México 04510, CDMX.Research Assistant program. SNI-CONAHCYT CONAHCYT - Instituto de Investigaciones en Ciencias de la Tierra, Universidad Michoacana de San Nicolás de Hidalgo, Santiago Tapia 403, 58000 Morelia, Michoacán, MéxicoUniversidad Nacional Autonoma de Mexico, Instituto de Geofísica, CDMX, MexicoThe Michoacán-Guanajuato Volcanic Field (MGVF) in central-western Mexico, with more than 1,000 monogenetic volcanoes, has been well known since 1943 when an eruption formed the Paricutín volcano, 11 km to the NW of the summit of Tancítaro stratovolcano. In the highly fractured zone around Tancítaro, referred to as the Paricutín-Tancítaro region (PTR), two major seismic swarms have been recorded, the first between January 5 and February 22, 2020, and the second between May 30 and July 22, 2021. The Mexican National Seismological Service (SSN) reported a total of 4,956 earthquakes with coda magnitudes between 2.6 and 4.2. With the aim to determine the causes of the swarms and the potential hazard they may pose on the region, we first analyze their spatial distributions by relocating all of the events using the Double Difference method and testing different 1-D velocity models to select the one with the lowest residual errors. Secondly, we analyze the temporal distributions finding that their temporal occurrence fits a Mogi’s type 3 volcanic seismic swarm. We conclude that each swarm is due to stresses induced by dike-fed intrusions of moderate volumes of magma in a pre-existing temporal magma reservoir, probably a sill.http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1759paricutin-tacítaroearthquake swarmmonogenetic volcanodistributed volcanism hazardsmagma intrusion |
| spellingShingle | Gema Victoria Caballero-Jiménez Ma. Cristina Zarazúa Ana Teresa Mendoza Servando De La Cruz- Reyna The 2020 and 2021 Seismic Swarms in the Tancítaro-Paricutín Area (Uruapan- Michoacán, México) Evidence Magma Intrusion in an Area with High Density of Monogenetic Cones Geofísica Internacional paricutin-tacítaro earthquake swarm monogenetic volcano distributed volcanism hazards magma intrusion |
| title | The 2020 and 2021 Seismic Swarms in the Tancítaro-Paricutín Area (Uruapan- Michoacán, México) Evidence Magma Intrusion in an Area with High Density of Monogenetic Cones |
| title_full | The 2020 and 2021 Seismic Swarms in the Tancítaro-Paricutín Area (Uruapan- Michoacán, México) Evidence Magma Intrusion in an Area with High Density of Monogenetic Cones |
| title_fullStr | The 2020 and 2021 Seismic Swarms in the Tancítaro-Paricutín Area (Uruapan- Michoacán, México) Evidence Magma Intrusion in an Area with High Density of Monogenetic Cones |
| title_full_unstemmed | The 2020 and 2021 Seismic Swarms in the Tancítaro-Paricutín Area (Uruapan- Michoacán, México) Evidence Magma Intrusion in an Area with High Density of Monogenetic Cones |
| title_short | The 2020 and 2021 Seismic Swarms in the Tancítaro-Paricutín Area (Uruapan- Michoacán, México) Evidence Magma Intrusion in an Area with High Density of Monogenetic Cones |
| title_sort | 2020 and 2021 seismic swarms in the tancitaro paricutin area uruapan michoacan mexico evidence magma intrusion in an area with high density of monogenetic cones |
| topic | paricutin-tacítaro earthquake swarm monogenetic volcano distributed volcanism hazards magma intrusion |
| url | http://revistagi.geofisica.unam.mx/index.php/RGI/article/view/1759 |
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