Affiliation:
1. Schmidt Institute of Physics of the Earth, Russian Academy of Sciences
2. P.P. Shirshov Institute of Oceanology, Russian Academy of Sciences
Abstract
A geodynamic model of the modern Earth is constructed based on the SMEAN 2 global seismic tomography model. On the basis of mantle temperature anomalies, numerical modeling of spherical mantle convection is performed for the parameters of the real Earth. For Antarctica, an explanation was obtained for the existence of the West Antarctic Rift System, which contains one of the largest and least known volcanic provinces on Earth, which is consistent with the increased surface heat flow and modern volcanism of the West Antarctic Rift System and part of the Antarctic Peninsula. The increased heat flow and volcanoes in this region are causing instability and accelerating the flow of glaciers from the West Antarctic Ice Sheet into the ocean, which could lead to a significant rise in global sea level.
Publisher
The Russian Academy of Sciences
Reference20 articles.
1. Трубицын В.П., Баранов А.А., Евсеев А.Н., Труби-цын А.П. Точные аналитические решения уравнения Стокса для тестирования уравнений мантийной конвекции с переменной вязкостью // Физика Земли. 2006. Т. 42. № 7. С. 3–11.
2. Lobkovsky L.I., Kotelkin V.D. Numerical analysis of geodynamic evolution of the Earth based on a thermochemical model of the mantle convection //Russian Journal of Earth Sciences. 2004. № 6 (1). P. 49–58.
3. Бобров А.М., Баранов А.А. Модель мантийной конвекции с неньютоновской реологией и фазовыми переходами: структура течений и поля напряжений // Физика Земли. 2016. Т. 52. № 1. С. 133–148.
4. Добрецов Н.Л., Кирдяшкин А.Г., Кирдяшкин А.А. Глубинная геодинамика. Новосибирск, Изд-во СО РАН, филиал “Гео”, 2001. 408 с.
5. Кирдяшкин А.А., Кирдяшкин А.Г. Влияние скорости движения океанической литосферы на свободно-конвективные течения в астеносфере под срединно-океаническим хребтом // Физика Земли. 2008. № 4. С. 35–47.