Studying earth rheology using GNSS permanent stations and GIA modelling tools

We studied the solid Earth rheology using observations in the North American and Fennoscandian uplift regions, in the form of horizontal and vertical velocities from Global Navigation Satellite System (GNSS) permanent stations. For North America the dataset from Sella and co-workers and for Fennosca...

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Bibliographic Details
Main Authors: Kollo, Karin, Spada, Giorgio, Vermeer, Martin
Other Authors: University of Urbino, Geoinformatics, Department of Built Environment, Aalto-yliopisto, Aalto University
Format: Article in Journal/Newspaper
Language:English
Published: 2017
Subjects:
Online Access:https://aaltodoc.aalto.fi/handle/123456789/24182
Description
Summary:We studied the solid Earth rheology using observations in the North American and Fennoscandian uplift regions, in the form of horizontal and vertical velocities from Global Navigation Satellite System (GNSS) permanent stations. For North America the dataset from Sella and co-workers and for Fennoscandia the BIFROST dataset were used respectively. We performed GIA (Glacial Isostatic Adjustment) modelling with the SELEN program, varying model parameters in order to find the best fit, in the chi-square sense, to the GNSS-derived velocity values. In the GIA modelling, the ice models ICE-5G and KL05 were used. The main results from this research were fitted Earth model parameters for these ice models using data from the North American and Fennoscandian uplift areas. The application of this method to the North American uplift region for these two different ice models is novel. Peer reviewed