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Updated: Aug 15, 2026
06:55
Kinematic History of a Salient-recess Junction Explored through a Combined Approach of Field Data and Analog Sandbox Modeling
Published on: August 5, 2016
La estructura de discontinuidad del manto debajo del sureste del Pacífico se eleva de P a S convertido en fases
1Y. Shen, Department of Geology and Geophysics, Woods Hole Oceanographic Institution, Woods Hole, MA 02543, USA. A. F. Sheehan, K. G. Dueker, H. Gilbert, Cooperative Institute for Research in Environmental Sciences (CIRES), University of.
Science (New York, N.Y.)
|June 5, 1998
Resumen
Las funciones del receptor sísmico revelan el grosor normal de la zona de transición del manto debajo de la subida del sur del Pacífico Oriental. Esto sugiere que el flujo ascendente no implica un exceso de calor en la zona de transición del manto.
Área de la Ciencia:
- La geofísica es la geofísica.
- Sismología Sismología Sismología.
- Ciencias de la Tierra Ciencias de la Tierra Ciencias de la Tierra
Sus antecedentes:
- La zona de transición del manto (MTZ) es una región clave para comprender la dinámica del manto.
- Los sismómetros del fondo oceánico proporcionan datos cruciales para la obtención de imágenes sísmicas de las estructuras profundas de la Tierra.
Objetivo del estudio:
- Investigar la estructura y el estado térmico de la MTZ debajo de la elevación del sur del Pacífico Oriental.
- Para determinar si el flujo ascendente del manto está asociado con propiedades anómalas de MTZ.
Principales métodos:
- Análisis de las funciones del receptor de ondas telesísmicas del cuerpo.
- Grabación de datos sísmicos utilizando sismómetros del fondo del océano.
- Identificación de las conversiones de onda de corte en las discontinuidades del manto (profundidades de 410 y 660 km).
Principales resultados:
- El grosor de la MTZ debajo de la elevación del sur del Pacífico Oriental es consistente con el promedio mundial.
- No se encontró evidencia de una MTZ más superficial o más gruesa.
Conclusiones:
- El flujo ascendente por debajo de la elevación del sur del Pacífico Oriental no parece estar asociado con el exceso de temperatura en la MTZ.
- La MTZ debajo de esta región exhibe propiedades sísmicas normales, lo que indica la ausencia de una anomalía térmica significativa.
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