The genesis of tangential mass forces in lithospheric plates, and their role in geodynamics
The problem of determining small tangential mass forces in the Earth lithosphere is formulated. It is shown that the current state in understanding the shape of The Earth's physical surface and data on its geoid allow us to determine deviations of the vertical line from the normal to the Earth&...
| Main Authors: | , |
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| Format: | Article |
| Language: | Russian |
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Institute of Volcanology and Seismology FEB RAS
2020-10-01
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| Series: | Вестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле |
| Subjects: | |
| Online Access: | http://www.kscnet.ru/journal/kraesc/article/view/629 |
| _version_ | 1819028386128855040 |
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| author | Ребецкий Ю.Л. Мягков ДС. |
| author_facet | Ребецкий Ю.Л. Мягков ДС. |
| author_sort | Ребецкий Ю.Л. |
| collection | DOAJ |
| description | The problem of determining small tangential mass forces in the Earth lithosphere is formulated. It is shown that the current state in understanding the shape of The Earth's physical surface and data on its geoid allow us to determine deviations of the vertical line from the normal to the Earth's surface on the scale of averaging in the first hundreds of kilometers. It is established that for large areas of lithospheric plates, systematic unidirectional deviations of the vertical line from the normal to the surface are observed. Small tangential mass forces calculated from these data are of the order n 10–4 G/cm3. If there is a stable surface gradient over areas of the first thousand kilometers (the oceanic part of the lithospheric plates) tangential mass forces can create additional compressive or tensile horizontal stresses of the order of 10–15 MPa. These forces, summed up by the depth of the lithosphere, are able to overcome the level of tangential stresses of
0.2–0.3 MPa at its bottom, and therefore they can be considered as a source of plate motion. |
| first_indexed | 2024-12-21T05:57:32Z |
| format | Article |
| id | doaj.art-e995c6470b384c7ba666a37baf7f766a |
| institution | Directory Open Access Journal |
| issn | 1816-5524 1816-5532 |
| language | Russian |
| last_indexed | 2024-12-21T05:57:32Z |
| publishDate | 2020-10-01 |
| publisher | Institute of Volcanology and Seismology FEB RAS |
| record_format | Article |
| series | Вестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле |
| spelling | doaj.art-e995c6470b384c7ba666a37baf7f766a2022-12-21T19:13:49ZrusInstitute of Volcanology and Seismology FEB RASВестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле1816-55241816-55322020-10-01473869710.31431/1816-5524-2020-47-3-86-97632The genesis of tangential mass forces in lithospheric plates, and their role in geodynamicsРебецкий Ю.Л.0Мягков ДС.1Schmidt Institute of Earth physics, Russian Academy of Sciences, Moscow, RussiaSchmidt Institute of Earth physics, Russian Academy of Sciences, Moscow, RussiaThe problem of determining small tangential mass forces in the Earth lithosphere is formulated. It is shown that the current state in understanding the shape of The Earth's physical surface and data on its geoid allow us to determine deviations of the vertical line from the normal to the Earth's surface on the scale of averaging in the first hundreds of kilometers. It is established that for large areas of lithospheric plates, systematic unidirectional deviations of the vertical line from the normal to the surface are observed. Small tangential mass forces calculated from these data are of the order n 10–4 G/cm3. If there is a stable surface gradient over areas of the first thousand kilometers (the oceanic part of the lithospheric plates) tangential mass forces can create additional compressive or tensile horizontal stresses of the order of 10–15 MPa. These forces, summed up by the depth of the lithosphere, are able to overcome the level of tangential stresses of 0.2–0.3 MPa at its bottom, and therefore they can be considered as a source of plate motion.http://www.kscnet.ru/journal/kraesc/article/view/629geodynamicsphysical surface of the earthgeoidtangential mass forces |
| spellingShingle | Ребецкий Ю.Л. Мягков ДС. The genesis of tangential mass forces in lithospheric plates, and their role in geodynamics Вестник Камчатской региональной ассоциации "Учебно-научный центр". Серия: Науки о Земле geodynamics physical surface of the earth geoid tangential mass forces |
| title | The genesis of tangential mass forces in lithospheric plates, and their role in geodynamics |
| title_full | The genesis of tangential mass forces in lithospheric plates, and their role in geodynamics |
| title_fullStr | The genesis of tangential mass forces in lithospheric plates, and their role in geodynamics |
| title_full_unstemmed | The genesis of tangential mass forces in lithospheric plates, and their role in geodynamics |
| title_short | The genesis of tangential mass forces in lithospheric plates, and their role in geodynamics |
| title_sort | genesis of tangential mass forces in lithospheric plates and their role in geodynamics |
| topic | geodynamics physical surface of the earth geoid tangential mass forces |
| url | http://www.kscnet.ru/journal/kraesc/article/view/629 |
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