A synthesis of the current state of the activity of Galeras volcano, Colombia, 2009
Giving continuity to the eruptive process of Galeras volcano detected about middle of 2004, after the intrusion of a lava dome in 2006, and the occurrence of explosive eruptions in July 12 of the same year and January 17 of 2008, new magmatic material was observed in September, 2008, joining the rem...
| Main Authors: | , , , , , , , |
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| Format: | Online |
| Language: | spa |
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Universidad Pedagógica y Tecnológica de Colombia - UPTC
2009
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| Subjects: | |
| Online Access: | https://revistas.uptc.edu.co/index.php/ingenieria_sogamoso/article/view/904 |
| _version_ | 1801706679783391232 |
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| author | Gómez, Diego Torres, Roberto Laverde, Carlos Cadena, Oscar Mier, Richard Monsalve, María Cortés, Gloria Calvache, Marta |
| author_facet | Gómez, Diego Torres, Roberto Laverde, Carlos Cadena, Oscar Mier, Richard Monsalve, María Cortés, Gloria Calvache, Marta |
| author_sort | Gómez, Diego |
| collection | OJS |
| description | Giving continuity to the eruptive process of Galeras volcano detected about middle of 2004, after the intrusion of a lava dome in 2006, and the occurrence of explosive eruptions in July 12 of the same year and January 17 of 2008, new magmatic material was observed in September, 2008, joining the remnants of the 2006 dome, with an estimated volume 3 towards the end of 2008, near to 5.000.000 m, restarting a new cycle of eruptive explosive processes, three of them within one month. These eruptions, in February 14 and 20 and March 13 of 2009, threw juvenile magma (with high glass contains), with the particularity of exhibiting before and at a few hours, a decrease in the seismicity, specially that one associated with transit of fluids as well as the decrease in the emissions of Sulphur Dioxide, SO . Although it was 2 no record of "Screw" type events, there were observed "hybrid" earthquakes with a fracture component, of superficial source. The presence of a lava dome, the cooling and partial solidification of the magma column with the consequent sealing of conduits, avoiding the free escape of gases, could explain the mechanism of beginning of these eruptions and with it, the behavior observed in seismicity and SO2. In comparative terms, the seismic energy liberated by the eruptions of the current cycle of reactivation, allows to establish from bigger to minor degree, the following order: Nov/21/04, Aug/21/04, Feb/20/09, Mar/13/09, Jan/17/08, Feb/14/09, Jul/12/06, Aug/11/04 and Nov/24/05. The total volume considered as minimum deposited by the 3explosive eruptions between 2004 and 2009 is near to 6.500.000 m , of which, almost a 38% 3 (2.500.000 m ) corresponds to the 2009 eruptions. Galeras continues presenting fluctuations in its activity, framed in the mobilization of the major volume of magmatic material of 20 years ofpermanent monitoring. |
| format | Online |
| id | oai:oai.revistas.uptc.edu.co:article-904 |
| institution | Revista Ingeniería, Investigación y Desarrollo |
| language | spa |
| publishDate | 2009 |
| publisher | Universidad Pedagógica y Tecnológica de Colombia - UPTC |
| record_format | ojs |
| spelling | oai:oai.revistas.uptc.edu.co:article-9042017-09-07T22:48:20Z A synthesis of the current state of the activity of Galeras volcano, Colombia, 2009 Una síntesis del estado actual de actividad del volcán Galeras, Colombia, 2009 Gómez, Diego Torres, Roberto Laverde, Carlos Cadena, Oscar Mier, Richard Monsalve, María Cortés, Gloria Calvache, Marta galeras volcano lava dome eruptions seismic energy volcán Galeras domo de lava erupciones energía sismica Giving continuity to the eruptive process of Galeras volcano detected about middle of 2004, after the intrusion of a lava dome in 2006, and the occurrence of explosive eruptions in July 12 of the same year and January 17 of 2008, new magmatic material was observed in September, 2008, joining the remnants of the 2006 dome, with an estimated volume 3 towards the end of 2008, near to 5.000.000 m, restarting a new cycle of eruptive explosive processes, three of them within one month. These eruptions, in February 14 and 20 and March 13 of 2009, threw juvenile magma (with high glass contains), with the particularity of exhibiting before and at a few hours, a decrease in the seismicity, specially that one associated with transit of fluids as well as the decrease in the emissions of Sulphur Dioxide, SO . Although it was 2 no record of "Screw" type events, there were observed "hybrid" earthquakes with a fracture component, of superficial source. The presence of a lava dome, the cooling and partial solidification of the magma column with the consequent sealing of conduits, avoiding the free escape of gases, could explain the mechanism of beginning of these eruptions and with it, the behavior observed in seismicity and SO2. In comparative terms, the seismic energy liberated by the eruptions of the current cycle of reactivation, allows to establish from bigger to minor degree, the following order: Nov/21/04, Aug/21/04, Feb/20/09, Mar/13/09, Jan/17/08, Feb/14/09, Jul/12/06, Aug/11/04 and Nov/24/05. The total volume considered as minimum deposited by the 3explosive eruptions between 2004 and 2009 is near to 6.500.000 m , of which, almost a 38% 3 (2.500.000 m ) corresponds to the 2009 eruptions. Galeras continues presenting fluctuations in its activity, framed in the mobilization of the major volume of magmatic material of 20 years ofpermanent monitoring. Dando continuidad al proceso eruptivo del volcán Galeras, detectado hacia mediados de 2004, después de la intrusión de un domo de lava en 2006 y la ocurrencia de erupciones explosivas el 12 de julio del mismo año y el 17 de enero de 2008, nuevo material magmático se observó en septiembre de 2008, incorporándose a los remanentes del domo de 2006, con un volumen estimado, hacia finales del 2008, cercano a los 5.000.000 m3, reiniciando un nuevo ciclo de procesos eruptivos explosivos, tres de ellos en el término de un mes. Estas erupciones, el 14 y 20 de febrero y el 13 de marzo de 2009, arrojaron magma juvenil (con altos contenidos de vidrio), con la particularidad de exhibir previamente, y en pocas horas, una disminución en la sismicidad, especialmente aquella asociada con tránsito de fluidos e, igualmente, el descenso en las emisiones de dióxido de azufre, SO2. Aunque no se registraron sismos tipo "tornillo", se observaron registros de sismos "híbridos", con una componente de fractura de carácter de fuente superficial. La presencia del domo de lava, el enfriamiento y solidificación parcial de la columna de magma con el consiguiente taponamiento de conductos, evitando la salida libre de gases, podría explicar el mecanismo de inicio de esas erupciones y, con ello, el comportamiento observado en sismicidad y en SO2. En términos comparativos, la energía sísmica liberada por las erupciones del actual ciclo de reactivación permite establecer, de mayor a menor grado, el siguiente orden: 21/Nov/04, 21/Ago/04, 20/Feb/09, 13/Mar/09, 17/Ene/08, 14/Feb/09, 12/Jul/06, 11/Ago/04 y 24/Nov/05. El volumen total considerado como mínimo depositado por las erupciones explosivas entre el 2004 y el 2009 es cercano a 6.500.000 m3, de los cuales cerca del 38% (2.500.000 m3) corresponde a las erupciones del 2009. Galeras sigue presentando fluctuaciones en su actividad, enmarcadas en la movilización del mayor volumen de material magmático de los 20 años de monitoreo continuo. Universidad Pedagógica y Tecnológica de Colombia - UPTC 2009-12-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.uptc.edu.co/index.php/ingenieria_sogamoso/article/view/904 Ingeniería Investigación y Desarrollo; Vol. 9 No. 2: julio-diciembre de 2009; 24-30 Ingeniería Investigación y Desarrollo; Vol. 9 Núm. 2: julio-diciembre de 2009; 24-30 2422-4324 1900-771X spa https://revistas.uptc.edu.co/index.php/ingenieria_sogamoso/article/view/904/904 Derechos de autor 2009 Ingeniería Investigación y Desarrollo |
| spellingShingle | galeras volcano lava dome eruptions seismic energy volcán Galeras domo de lava erupciones energía sismica Gómez, Diego Torres, Roberto Laverde, Carlos Cadena, Oscar Mier, Richard Monsalve, María Cortés, Gloria Calvache, Marta A synthesis of the current state of the activity of Galeras volcano, Colombia, 2009 |
| title | A synthesis of the current state of the activity of Galeras volcano, Colombia, 2009 |
| title_alt | Una síntesis del estado actual de actividad del volcán Galeras, Colombia, 2009 |
| title_full | A synthesis of the current state of the activity of Galeras volcano, Colombia, 2009 |
| title_fullStr | A synthesis of the current state of the activity of Galeras volcano, Colombia, 2009 |
| title_full_unstemmed | A synthesis of the current state of the activity of Galeras volcano, Colombia, 2009 |
| title_short | A synthesis of the current state of the activity of Galeras volcano, Colombia, 2009 |
| title_sort | synthesis of the current state of the activity of galeras volcano colombia 2009 |
| topic | galeras volcano lava dome eruptions seismic energy volcán Galeras domo de lava erupciones energía sismica |
| topic_facet | galeras volcano lava dome eruptions seismic energy volcán Galeras domo de lava erupciones energía sismica |
| url | https://revistas.uptc.edu.co/index.php/ingenieria_sogamoso/article/view/904 |
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