Effects of inner core viscosity on gravity changes and spatial nutations induced by luni-solar tides |
| |
| Affiliation: | 1. Institut de Physique du Globe de Paris, Geomagnetism, 4 place Jussieu, 75252 Paris 05, France;2. Observatoire Royal de Belgique, 3 Av. Circulaire, B-1180 Bruxelles, Belgium;3. Institut de Physique du Globe de Strasbourg, 5 rue R. Descartes 67084 Strasbourg, France;1. School of Remote Sensing and Geomatics Engineering, Nanjing University of Information Science and Technology, Nanjing 210044, China;2. Nanjing Longyuan Microelectronic Co., LTD, Nanjing 211106, China;3. Laurel Geophysical Instruments Limited, Shanghai 200232, China;4. Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030, China;1. Vernadsky Institute of Geochemistry and Analytical Chemistry, Russian Academy of Sciences, 119991 Moscow, Russia;2. RISE Project, National Astronomical Observatory of Japan, 2-12, Hoshigaoka, Mizusawa, Oshu, Iwate 023-0861, Japan;3. The Graduate University for Advanced Studies, SOKENDAI, Shonan Village, Hayama, Kanagawa 240-0193, Japan;4. The University of Aizu, Research Center for Advanced Information, Aizu-Wakamatsu, Fukushima Pref. 965-8580, Japan;5. Creative Research Institution, Hokkaido University, Kita 8, Nishi 5, Kita-ku, Sapporo 001-0021, Japan;1. Geospatial Imaging and Information Research Group (GI2RG), Faculty of Built Environment and Surveying, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia;2. Geoscience and Digital Earth Centre (INSTeG), Faculty of Built Environment and Surveying, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia;3. Environment and Climate Change Research Group (ECCG) Faculty of Architecture, Planning & Surveying, Universiti Teknologi MARA, Perlis, Arau Campus, 02600, Arau, Perlis, Malaysia;4. Geomatics Innovation Research Group (GnG), Faculty of Built Environment and Surveying, Universiti Teknologi Malaysia, 81310, Skudai, Johor, Malaysia;1. Department of Civil and Environmental Engineering, United Arab Emirates University, Al Ain, P.O. Box 15551, United Arab Emirates;2. Department of Civil and Water Engineering, Laval University, Québec City, Québec G1V 0A6, Canada;1. Department of Global Health, University of Washington, Seattle, WA 98104, USA |
| |
| Abstract: | In this paper, we investigate the perturbations induced by the nearly-diurnal luni-solar tidal potential on the surface gravity changes and on the spatial nutations. The effects of the magnetic friction at the inner core boundary (ICB) and on the inner core viscosity at this time scale are studied. We show that very precise very long baseline interferometry (VLBI) observations of the in-phase and out-of-phase components of some nutations can give information on the Earth’s deep interior, especially on the effective viscosity of the inner core and on the amplitude of the radial component of the magnetic field at the ICB. |
| |
| Keywords: | |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
