Bouman, J. et al.: Swarm magnetic and GOCE gravity gradient grids for lithospheric modelling. COSPAR, Istanbul, August 2016

Bouman, J., J. Ebbing, S. Kotsiaros, M. Brönner, J. Sebera., R. Haagmans, M. Fuchs, N. Holzrichter, N. Olsen, E. Baykiev and P. Novak:

Swarm magnetic and GOCE gravity gradient grids for lithospheric modelling. COSPAR, Istanbul, August 2016.

We explore how Swarm magnetic gradient and GOCE gravity gradient data can improve modelling of the Earth’s lithosphere and thereby contribute to a better understanding of Earth’s dynamic processes. We study the use of gradient grids to provide improved information about the lithosphere and upper mantle in the well-surveyed North-East Atlantic Margin. In particular, we present the computation of magnetic and gravity gradient grids at satellite altitude (roughly 450 km and 250 km above the Earth for Swarm and GOCE respectively). It is shown that regional solutions based on a tesseroid approach may contain more signal content than global models do. The patchwork of regional grids is presented as well as the subsequent error reduction through iterative downward and upward continuation using the Poisson integral equation. The promises and pitfalls are discussed of using grids at mean satellite altitude.