Abstract
AbstractThis study presents results of mapping three-dimensional (3-D) variations of the electrical conductivity in depths ranging from 400 to 1200 km using 6 years of magnetic data from the Swarm and CryoSat-2 satellites as well as from ground observatories. The approach involves the 3-D inversion of matrix Q-responses (transfer functions) that relate spherical harmonic coefficients of external (inducing) and internal (induced) origin of the magnetic potential. Transfer functions were estimated from geomagnetic field variations at periods ranging from 2 to 40 days. We study the effect of different combinations of input data sets on the transfer functions. We also present a new global 1-D conductivity profile based on a joint analysis of satellite tidal signals and global magnetospheric Q-responses.
Publisher
Springer Science and Business Media LLC
Subject
Space and Planetary Science,Geology
Reference96 articles.
1. Abramowitz M, Stegun IA (1964) Handbook of mathematical functions. Dover Press, New York
2. Alekseev D, Kuvshinov A, Palshin N (2015) Compilation of 3-D global conductivity model of the Earth for space weather applications. Earth Planets Space 67:108–118. https://doi.org/10.1186/s40623-015-0272-5
3. Aster RC, Borchers B, Thurber CH (2018) Parameter estimation and inverse problems. Elsevier, New York
4. Baba K, Chen J, Sommer M, Utada H, Geissler WH, Jokat W, Jegen M (2017) Marine magnetotellurics imaged no distinct plume beneath the Tristan da Cunha hotspot in the southern Atlantic Ocean. Tectonophysics 716:52–63.
5. Baba K, Utada H, Goto T, Kasaya T, Shimizu H, Tada N (2010) Electrical conductivity imaging of the Philippine Sea upper mantle using seafloor magnetotelluric data. Phys Earth Planet In 183:44–62
Cited by
35 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献