Objective This proposed project is aimed at theoretical and experimental investigations of geophysical phenomena, which are directly or via a change of interactions connected to the existence of the ionospheric Alfvén resonator (IAR). Active and passive roles of IAR in formation of ULF electromagnetic environment (in frequency range 0.1-10 Hz) at the ground and in near space will be studied in detail.For the first time, detailed correlated study of IAR fingerprints such as spectral resonance structures (SRS) frequently observed at high, mid and low latitudes will be performed. Long-term statistical surveys and selected case studies will be carried out. Properties of SRS will be used in an inversion technique to infer ionospheric parameters and to apply SRS as a monitor for large-scale ionospheric modulation by gravity and planetary waves.Past and current satellite data will be searched for IAR signatures in space. The role of IAR in formation of ULF wave spectra in the inner and auroral magnetosphere will be investigated intending to resolve principal problems of the near-Earth environment. In particular, the influence of reflection from and transmission through the ionosphere on generation and detection of various spectral forms in Pc 1 frequency band, such as pearls and IPDP emissions, will be studied. The Alfvén Sweep Maser (ASM) model of which IAR is an essential component will be tested for its functionality in the production of Pc1 ULF waves. The missing link of ion precipitation in the experimental verification of ASM will be addressed in a special co-ordinated multi-satellite-ground observation approach. This study will essentially help in quantifying the contribution of ULF waves to the particle and energy budget of the magnetospheric ring current.Considerable theoretical efforts will be made to improve present IAR models taking into account non-linear effects, new excitation mechanisms, and new constituents of the near-Earth environment such as dust and aerosols. The IAR concept will be enlarged by applying it to small-scale auroral physics and substorm triggering. Programme(s) IC-INTAS - International Association for the promotion of cooperation with scientists from the independent states of the former Soviet Union (INTAS), 1993- Topic(s) 5 - Earth Sciences, Environment, Energy OPEN - OPEN Call Call for proposal Data not available Funding Scheme Data not available Coordinator University of Oulu EU contribution No data Address Linnamaa 90401 Oulu Finland See on map Total cost No data Participants (6) Sort alphabetically Sort by EU Contribution Expand all Collapse all Cola Branch of Russian Academy of Science Russia EU contribution No data Address 14 Fersmann str 184200 Murmansk region, Apatity See on map Total cost No data Radiophysical Research Institute Russia EU contribution No data Address 25 Bolshaya Pecherskaya Str. 603600 Nizhny Novgorod See on map Total cost No data Russian Academy of Sciences Russia EU contribution No data Address B.Gruzinskaya, 10 123810 Moscow See on map Total cost No data Russian Academy of Sciences Russia EU contribution No data Address Ulyanov Street, 46 603600 Nizhny Novgorod See on map Total cost No data SWEDISH INSTITUTE OF SPACE PHYSICS Sweden EU contribution No data Address 75121 UPPSALA See on map Total cost No data University of Oulu Finland EU contribution No data Address Tahtelantie 112 99600 Sodankylä See on map Total cost No data
