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Exploitation of GOCE Data for a Local Estimate of Gravity Field and Geoid in the Regione Piemonte Area (Northern Italy)

Riccardo Conte(1), Fernando Sansò(2) and Filomena Solitro(3)

(1) Protezione Civile Regione Piemonte, Corso Marche, 79, 10146, Italy
(2) Politecnico di Milano, Piazza Leonardo da Vinci, 32, 20133, Italy
(3) ALTEC S.p.A., Corso Marche, 79, 10146, Italy

Abstract

This poster describes the activities carried out by a working group, including the Civil Protection department of Regione Piemonte, Altec S.p.A. (Advanced Logistic Technology Engineering Center) and Politecnico di Milano, regarding the exploitation of GOCE data for a local estimate of gravity field and geoid in the Regione Piemonte area.

The idea of the project was conceived in July 2004; within it, the different groups operate as follows: · Altec is prime contractor of the project and responsible for the coordination of the work, development of the demonstrative and/or operative products, analysis of the user requirements; · Politecnico di Milano is responsible for the technical and scientific analysis and the development of specific algorithms needed for the modelling of the local gravity field and the geoid; · Civil Protection of Regione Piemonte is interested in gravimetric and seismic applications (new gravity field map of Regione Piemonte and evaluation of solid earth processes – geodynamics).

The “GOCE Data for Civil Protection” Project started in February 2005 and will last until July 2007. The main activities of the project are the following: · analysis of the requirements of Civil Protection of Regione Piemonte; · collection of gravimetric data and data validation at ground level; · definition of technical procedures to estimate the gravity field and to evaluate the actual impact of GOCE data in the local geoid estimation procedure; · integration of GOCE simulated data for the Piemonte area with gravimetric data at ground level; · development of a product operative demonstrator (a sort of “tool box” for the specific applications of the project), based on the exploitation of data collected over the area of interest and on software specifically developed with the aim of data updating, of evaluating project products, and possibly of identifying new potential applications (training, education, product promotion, etc).

Most of the scheduled activities have been already carried out successfully. In particular, the scientific approach has demonstrated the positive impact of the GOCE information on the local geoid estimation using simulated data. Besides, the “tool box” is well under construction and can now be used to estimate the gravitational field and the geoid in the Piemonte area, and to compute point-wise values of them and of other functionals of the gravity potential. When the project will be completed, in the frame of a specific GIS, it will be possible to integrate a new gravimetric map of Regione Piemonte with other data and also to combine the Piemonte geological map with the gravimetric data.

 

Workshop poster

Keywords: ESA European Space Agency - Agence spatiale europeenne, observation de la terre, earth observation, satellite remote sensing, teledetection, geophysique, altimetrie, radar, chimique atmospherique, geophysics, altimetry, radar, atmospheric chemistry