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Published on: September 5, 2018
La isostasia en Australia y la evolución del mecanismo de compensación
Resumen
Los científicos analizaron la gravedad australiana y los datos topográficos para comprender la compensación isostática. Los hallazgos revelan diferencias con los datos de los Estados Unidos, lo que sugiere que el arrastre litosférico influye en las respuestas isostáticas a lo largo del tiempo.
Área de la Ciencia:
- La geofísica es la geofísica.
- La isostasia y la isostasia son las mismas.
- Los estudios litosféricos incluyen estudios de la litosfera.
Sus antecedentes:
- La compensación isostática describe el ajuste de la corteza terrestre a los cambios de masa.
- Estudios anteriores calcularon las funciones de respuesta isostática para diferentes regiones.
Objetivo del estudio:
- Para calcular la función de respuesta isostática para Australia utilizando datos de gravedad y topografía.
- Para comparar la función de respuesta australiana con la de los Estados Unidos.
- Investigar los mecanismos subyacentes que causan las diferencias observadas en la respuesta isostática.
Principales métodos:
- Análisis de la función de transferencia lineal aplicado a la gravedad y datos topográficos.
- Cálculo de la función de respuesta isostática Dorman y Lewis para Australia.
Principales resultados:
- La función de respuesta isostática australiana difiere significativamente de la función de respuesta estadounidense.
- Las diferencias observadas sugieren variaciones regionales en los mecanismos de compensación isostática.
Conclusiones:
- La evolución del mecanismo de compensación isostática, que involucra el flujo viscoelástico litosférico, puede explicar las diferencias.
- El flujo viscoelástico en la litosfera parece relajar las tensiones elásticas de larga longitud de onda, influyendo en la respuesta isostática.
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