Modelling of Density Structure and Geodynamic Features of the Arctic Basin with the Geoid and Altimetric Data

• Main Author: R. Kh. Greku
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: geoid; deep structure; harmonic; density; geodynamics; Arctic; Arctic Basin
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.141.5051; http://www.isprs.org/publications/related/ISRSE/html/papers/731.pdf

Abstract – This paper presents the Earth’s interior data of the Arctic and surrounding regions obtained through the gravimetric tomography method developed by us and dedicated for reconstruction and displaying the structural geological inhomogeneities in different layers. Characteristics of the global geoid height model’s spherical harmonics are the input data for the method. They are used both for determination of the layers ’ depths disturbing geopotential and for computing of harmonic dense anomalies. Vertical and lateral sections calculated show a distribution of masses in all range of depths up to 5300 km, geometry and sizes of density inhomogeneities, their displacement in depth under the impact of geodynamic processes, and correlation of subsurface bodies with the known topographic features also. A significant difference between geodynamic processes in geospheres of the core, mantle and crust is emphasized.