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Please use this identifier to cite or link to this item: http://hdl.handle.net/2122/2567

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Title: A model of plate motion
Authors: Riguzzi, F.*
Crespi, M.*
Cuffaro, M.*
Doglioni, C.*
Giannone, F.*
Keywords: Motions
kinematics
Issue Date: 2006
Title of journal: International Association of Geodesy Symposia
Abstract: The wide use of space geodesy techniques devoted to geophysical and geodynamical purposes has recently evidenced some limitations due to the intrinsic Terrestrial Reference Frame (TRF) definition. Current TRFs are defined under hypotheses suited to overcome the rank deficiency of the observations with respect to the parameters that have to be estimated, i.e. coordinates and velocities (Dermanis, 2001; Dermanis, 2002). From a geodetic point of view, one possibility implies the application of the no-net-rotation condition (NNR). One of the main geophysical consequences due to the application of this condition is that it allows only accurate estimations of relative motions, whilst other motions of geodynamical interest, for instance with respect to the inner layers of the Earth body, are not determinable. The main purpose of this paper is to propose a unified way to describe plate motions, overcoming the problems introduced by the NNR condition, in order to establish a new reference frame useful for geodynamical applications too. Since we believe relevant the role played by global tectonics inferences, we introduce the concept of the main tectonic sinusoid to propose an analytical description of the plate motions flow, which is polarized to the “west” in the hotspot reference frame.
URI: http://hdl.handle.net/2122/2567
Appears in Collections:Papers Published / Papers in press
02.02.03. Geomorphology

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