Pulsations and breaks of tails of thermal mantle plumes
- Авторлар: Evseev M.N.1, Trubitsyn V.P.1,2
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Мекемелер:
- Schmidt Joint Institute of Physics of the Earth
- Institute of Earthquake Prediction Theory and Mathematical Geophysics
- Шығарылым: Том 476, № 2 (2017)
- Беттер: 1193-1194
- Бөлім: Geophysics
- URL: https://ogarev-online.ru/1028-334X/article/view/191116
- DOI: https://doi.org/10.1134/S1028334X17100154
- ID: 191116
Дәйексөз келтіру
Аннотация
In the available numerical models, mantle plumes are represented by homogeneous ascending streams of thermal convection. Pulses are considered to be possible only in thermochemical plumes within the compositionally inhomogeneous mantle. We show that pulses can also occur under regular thermal convection in the homogeneous mantle. As the intensity grows, the flow in the tail of a thermal plume first begins pulsing and then the plume breaks up into a set of sequentially emerging thermals. For the present-day mantle, the pulsation periods for plumes in the lower mantle can range up to 10 Ma and about 1 Ma in the upper mantle.
Авторлар туралы
M. Evseev
Schmidt Joint Institute of Physics of the Earth
Email: vtrubi@yandex.ru
Ресей, Moscow, 123810
V. Trubitsyn
Schmidt Joint Institute of Physics of the Earth; Institute of Earthquake Prediction Theory and Mathematical Geophysics
Хат алмасуға жауапты Автор.
Email: vtrubi@yandex.ru
Ресей, Moscow, 123810; Moscow, 117997
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