Objectif The geomagnetic field and its secular variation is one of the few means of exploring the properties of the Earth's mantle and core. Accurate models of the field at the core-mantle boundary reveal aspects of the fluid core flow, core-mantle coupling and correlations between field variations and variations in the length of day.The detailed objectives of the Project are the following:- To construct a database of precise magnetic measurements from geomagnetic observatories, repeat stations and satellite magnetic surveys for the whole globe, and in particular for the European region, for the 20th century;- To develop regional potential field models of variations with sources in the ionosphere and magnetosphere for the purposes of extraction of these parts of the field from satellite survey data so that the remaining signal can be used for modelling the internal geomagnetic field. These models of ionospheric and magnetospheric sources may also elucidate the physical processes generating them;- To construct global and regional space-time models of the Earth's field using data collected and modern inverse theory methods;- To separate changes in the magnetic field, e.g. the secular variation (SV), into parts of different origin and investigate their characteristics in space and in time. In particular the dependence of the fine structure of secular variation on the dynamics of the Earth lithosphere will be investigated;- To study the interaction between different sources of the field and their relationship with other geophysical and heliophysical phenomena, for example magnetic activity.Completion of tasks by the Project teams will lead to the construction of:- a fully self-consistent spatial-temporal model of the main field changes and models of the fluid motions at the surface of the liquid core that generated these changes and influence the Earth's daily rotation;- a family of regional models of high-latitude geomagnetic variations and of the current systems generating these variations valid for a range of solar activity, interplanetary magnetic fields and seasons;- a family of models of regional magnetic field changes for areas of different tectonic and recent geodynamical structure. Programme(s) IC-INTAS - International Association for the promotion of cooperation with scientists from the independent states of the former Soviet Union (INTAS), 1993- Thème(s) 5 - Earth Sciences, Environment, Energy OPEN - OPEN Call Appel à propositions Data not available Régime de financement Data not available Coordinateur British Geological Survey Contribution de l’UE Aucune donnée Adresse Murchison House, West Mains Rd EH9 3LA Edinburgh Royaume-Uni Voir sur la carte Coût total Aucune donnée Participants (9) Trier par ordre alphabétique Trier par contribution de l’UE Tout développer Tout réduire Danish Space Research Institute Danemark Contribution de l’UE Aucune donnée Adresse Juliane Maries Vej 30 2100 Copenhagen Voir sur la carte Coût total Aucune donnée Finnish Meteorological Institute Finlande Contribution de l’UE Aucune donnée Adresse P.O. Box 503 00101 Helsinki Voir sur la carte Coût total Aucune donnée ISTITUTO NAZIONALE DI GEOFISICA E VULCANOLOGIA Italie Contribution de l’UE Aucune donnée Adresse Via di Vigna Murata 605 ROME Voir sur la carte Coût total Aucune donnée Institut de Physique du Globe de Paris France Contribution de l’UE Aucune donnée Adresse 4 Place Jussieu, Case 89-Tour 24 75252 Paris 5e Voir sur la carte Coût total Aucune donnée Institute of Geophysics Ukraine Contribution de l’UE Aucune donnée Adresse Naukova st 290601 Lviv Voir sur la carte Coût total Aucune donnée Institute of Geophysics and Engineering Seismology Arménie Contribution de l’UE Aucune donnée Adresse V.Sargsyan 5 377515 Giumry Voir sur la carte Coût total Aucune donnée Russian Academy of Sciences Russie Contribution de l’UE Aucune donnée Adresse IZMIRAN 142190 Troitsk, Moscow region Voir sur la carte Coût total Aucune donnée Russian Academy of Sciences Russie Contribution de l’UE Aucune donnée Adresse Мuchnoy, 2 191023 St. Petersburg Voir sur la carte Coût total Aucune donnée Siberian branch of Russian Academy of Sciences Russie Contribution de l’UE Aucune donnée Adresse Lermontov street, 126 664033 Irkutsk Voir sur la carte Coût total Aucune donnée
