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SELF-POTENTIAL SIGNALS CAUSED BY ERUPTIONS OF THE GALERAS VOLCANO-COLOMBIA.

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Title: SELF-POTENTIAL SIGNALS CAUSED BY ERUPTIONS OF THE GALERAS VOLCANO-COLOMBIA.
Authors: Greinwald, S.1, Ortega, A.2, Rugeles, A.3, V. Seth, Ips M.1
Source: Earth Sciences Research Journal. Dec2007, Vol. 11 Issue 2, p155-162. 8p. 1 Diagram, 6 Graphs, 1 Map.
Subjects: Electromagnetism, Electromagnetic fields, Volcanic activity prediction, Emissions (Air pollution), Galeras (Colombia)
Geographic Terms: Colombia
Abstract (English): The National Institute of Geology and Mining, INGEOMINAS -- Colombia, and the Federal Institute for Geosciences and Natural Resources, BGR -- Germany, perform since 1997 as a joint venture multi-parameter measurements at the Galeras volcano, in the southwest of Colombia. Since the end of 1998 the Multi-parameter Station at Galeras (Estación Multiparámetro del Galeras -- EMG) includes the continuous monitoring of electromagnetic variations. The electromagnetic (EM) station is located at the north-eastern foot walls of the central cone inside the caldera. During almost six years of electromagnetic monitoring, the data did not show significant variations of the electromagnetic field, which could be related to the volcanic activity. In July 2004 a new active period of Galeras began with two strong ash emissions. During both emissions strong self potential-(SP) signals were recorded lasting for several hours. The present paper will present the data which could give some indications on the movements of liquids during ash emissions. [ABSTRACT FROM AUTHOR]
Abstract (Spanish): El Instituto Nacional de Geología y Minas, INGEOMINAS -- Colombia, y el instituto federal para las Geociencias y Recursos naturales, BGR -- Alemania, funcionan desde 1997 como una empresa de riesgo compartido tomando medidas multiparamétricas en el volcán de Galeras, al sudoeste de Colombia. Desde finales de 1998, la estación del multiparamétrica del Galeras (EMG) incluye el monitoreamiento continuo de las variaciones electromagnéticas. La estación electromagnética (EM) está situada en las paredes nororientales del cono central dentro de la caldera. Durante casi seis años de supervisión electromágnetica, los datos no demostraron variaciones significativas del campo electromagnético, que se podrían relacionar con la actividad volcánica. En julio del 2004 un nuevo período de actividad del Galeras comenzó con dos emisiones fuertes de ceniza. Durante ambas emisiones, fuertes señales auto-potenciales (SP) fueron registradas por varias horas. Este artículo presentará datos que podrían dar algunas indicaciones sobre los movimientos de los líquidos durante las emisiones de ceniza. [ABSTRACT FROM AUTHOR]
Copyright of Earth Sciences Research Journal is the property of Universidad Nacional de Colombia and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: SELF-POTENTIAL SIGNALS CAUSED BY ERUPTIONS OF THE GALERAS VOLCANO-COLOMBIA.
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  Data: <searchLink fieldCode="JN" term="%22Earth+Sciences+Research+Journal%22">Earth Sciences Research Journal</searchLink>. Dec2007, Vol. 11 Issue 2, p155-162. 8p. 1 Diagram, 6 Graphs, 1 Map.
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  Data: The National Institute of Geology and Mining, INGEOMINAS -- Colombia, and the Federal Institute for Geosciences and Natural Resources, BGR -- Germany, perform since 1997 as a joint venture multi-parameter measurements at the Galeras volcano, in the southwest of Colombia. Since the end of 1998 the Multi-parameter Station at Galeras (Estación Multiparámetro del Galeras -- EMG) includes the continuous monitoring of electromagnetic variations. The electromagnetic (EM) station is located at the north-eastern foot walls of the central cone inside the caldera. During almost six years of electromagnetic monitoring, the data did not show significant variations of the electromagnetic field, which could be related to the volcanic activity. In July 2004 a new active period of Galeras began with two strong ash emissions. During both emissions strong self potential-(SP) signals were recorded lasting for several hours. The present paper will present the data which could give some indications on the movements of liquids during ash emissions. [ABSTRACT FROM AUTHOR]
– Name: Abstract
  Label: Abstract (Spanish)
  Group: Ab
  Data: El Instituto Nacional de Geología y Minas, INGEOMINAS -- Colombia, y el instituto federal para las Geociencias y Recursos naturales, BGR -- Alemania, funcionan desde 1997 como una empresa de riesgo compartido tomando medidas multiparamétricas en el volcán de Galeras, al sudoeste de Colombia. Desde finales de 1998, la estación del multiparamétrica del Galeras (EMG) incluye el monitoreamiento continuo de las variaciones electromagnéticas. La estación electromagnética (EM) está situada en las paredes nororientales del cono central dentro de la caldera. Durante casi seis años de supervisión electromágnetica, los datos no demostraron variaciones significativas del campo electromagnético, que se podrían relacionar con la actividad volcánica. En julio del 2004 un nuevo período de actividad del Galeras comenzó con dos emisiones fuertes de ceniza. Durante ambas emisiones, fuertes señales auto-potenciales (SP) fueron registradas por varias horas. Este artículo presentará datos que podrían dar algunas indicaciones sobre los movimientos de los líquidos durante las emisiones de ceniza. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
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  Data: <i>Copyright of Earth Sciences Research Journal is the property of Universidad Nacional de Colombia and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Text: English
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      – SubjectFull: Electromagnetic fields
        Type: general
      – SubjectFull: Volcanic activity prediction
        Type: general
      – SubjectFull: Emissions (Air pollution)
        Type: general
      – SubjectFull: Galeras (Colombia)
        Type: general
      – SubjectFull: Colombia
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      – TitleFull: SELF-POTENTIAL SIGNALS CAUSED BY ERUPTIONS OF THE GALERAS VOLCANO-COLOMBIA.
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              Text: Dec2007
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