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Estimation of the asymmetric vertical variation of the Southern and Northern hemispheres of the Earthстатья
Статья опубликована в журнале из списка RSCI Web of Science
Статья опубликована в журнале из списка Web of Science и/или ScopusДата последнего поиска статьи во внешних источниках: 19 октября 2015 г.
- Авторы: WenBin Shen, Rong Sun, Yuri Barkin, Zi-Yu Shen
- Журнал: Geodynamics & Tectonophysics
- Том: 6
- Номер: 1
- Год издания: 2015
- Издательство: Федеральное государственное бюджетное учреждение науки Институт земной коры Сибирского отделения РАН
- Местоположение издательства: Иркутск
- Первая страница: 45
- Последняя страница: 61
- DOI: 10.5800/GT-2015-6-1-0171
- Аннотация: Abstract: In previous studies, the northern hemisphere of the Earth is considered to be in compression while the southern one is in expansion. In this study, based on three different methods, we calculate average vertical variations of the two hemispheres from velocity field data under the ITRF2008 (International Terrestrial Reference Frame 2008) solution. Results show that the northern hemisphere is in expansion at the rate about 1 mm/yr, while the compres-sion rate of the southern hemisphere is one order smaller than the expansion rate of the northern one. After the post glacial rebound effect is subtracted, results show that the expansion and compression rates of the northern and southern hemispheres are 0.46 mm/yr and –0.19 mm/yr, respectively. Transformation between the velocity fields under ITRF2008 and ITRF2000 can explain why different authors have different conclusions about the expan-sion/compression pattern of one hemisphere or the other. Anyway, the entire Earth is expanding at a rate about 0.2 mm/yr, and this estimation coincides with results of our previous studies. The mean variation rates of the radii at different latitudes have been calculated. Key words: reference systems, tectonic deformation, space geodetic datasets, expansion, compression.
- Добавил в систему: Баркин Юрий Владимирович
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | 2015_WenBIN-SHEN_ET_AL_RADIUSES_HEMISPHERES.pdf | 11,9 МБ | 20 мая 2015 [BarkinYV] |