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Oscilaciones resonantes entre la tierra sólida y la atmósfera.
1Earthquake Research Institute, University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo 113-0032, Japan. Earth and Planetary Sciences, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8550, Japan.
Science (New York, N.Y.)
|March 24, 2000
Resumen
La Tierra La Tierra La Tierra La Tierra La Tierra
Área de la Ciencia:
- La geofísica es la geofísica.
- Sismología Sismología Sismología.
- La acústica atmosférica es la acústica atmosférica.
Sus antecedentes:
- Oscilaciones libres continuas de la Tierra detectadas en el ruido sísmico.
- Estas oscilaciones ocurren en la banda de frecuencias de ondas superficiales de largo período.
Objetivo del estudio:
- Investigar la variación anual en las oscilaciones libres de la Tierra.
- Determinar la fuente de excitación de estas oscilaciones sísmicas.
Principales métodos:
- Análisis de los datos de ruido sísmico del suelo.
- Análisis de correlación entre las oscilaciones sísmicas y los fenómenos atmosféricos.
Principales resultados:
- Evidencia de una variación anual en las oscilaciones libres de la Tierra.
- Resonancia observada entre las oscilaciones acústicas sísmicas y atmosféricas.
- Indicación de que la fuente de excitación está en o cerca de la superficie de la Tierra.
Conclusiones:
- La fuente de excitación de las oscilaciones libres de la Tierra es externa a la Tierra sólida.
- Las oscilaciones acústicas atmosféricas probablemente juegan un papel en las excitantes oscilaciones sísmicas libres.
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