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Soil Lysimeter Excavation for Coupled Hydrological, Geochemical, and Microbiological Investigations
Published on: September 11, 2016
Distribución del radón y el mercurio elemental en el suelo y relación con el resurgimiento magmático en la caldera de
Science (New York, N.Y.)
|August 9, 1985
Resumen
Las respuestas del sistema geotérmico al movimiento del magma se estudiaron utilizando gas del suelo. Los niveles de radón y mercurio indicaron un aumento del magma, lo que ayudó a evaluar el peligro volcánico.
Área de la Ciencia:
- La geoquímica es la geoquímica.
- Volcanología Volcanología.
- Sistemas geotérmicos Sistemas geotérmicos
Sus antecedentes:
- Los grandes sistemas geotérmicos pueden verse influenciados por la actividad magmática.
- Comprender estas respuestas es crucial para la evaluación del peligro volcánico.
Objetivo del estudio:
- Para analizar la respuesta geoquímica del sistema geotérmico de la caldera de Long Valley al resurgimiento magmático.
- Investigar la utilidad de la geoquímica de los gases del suelo en la evaluación de los peligros volcánicos.
Principales métodos:
- Realizó una encuesta de gases del suelo de radón y mercurio elemental en 600 sitios.
- Análisis de datos geoquímicos en relación con las estructuras geológicas.
Principales resultados:
- Identificaron una amplia anomalía geoquímica a través de la caldera.
- Se observó una zona localizada de alto radón y bajo mercurio, coincidiendo con un dique de magma ascendente postulado.
Conclusiones:
- La geoquímica del gas del suelo, específicamente el radón y el mercurio, puede detectar la actividad magmática.
- Este método complementa los enfoques geofísicos y geodésicos tradicionales para la evaluación de riesgos volcánicos.
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