Studies of the Dayside Boundary Layer Processes Based on Ground Observations in the Svalbard Area. Phase 1

• Main Authors: Egeland, A., Holtet, J. A., Sandholt, P. E.
• Other Authors: OSLO UNIV (NORWAY) DEPT OF PHYSICS
• Format: Text
• Language: English
• Published: 1994
• Subjects: Atmospheric Physics; *AURORAE; IONOSPHERE; POLAR REGIONS; MAGNETIC FIELDS; PLASMAS(PHYSICS); OBSERVATION; GROUND BASED; NORWAY; MAGNETOSPHERE; GREENLAND; ARCTIC REGIONS; INCOHERENT SCATTERING; BOUNDARY LAYER; RADAR; METEOROLOGICAL SATELLITES; PULSES; TRANSLATIONS; DAYSIDE AURORA; CLEFT/LLBL; BOUNDARY REGIONS/PROCESSES; EISCAT(EUROPEAN INCOHERENT SCATTERING SCIENTIFIC ASSOCIATION); FAST EXPLORER; DMSP(DEFENSE METEOROLOGICAL SATELLITE PROGRAM); SVALBARD REGION; KELVIN HELMHOLTZ INSTABILITIES; SBI1; FISCAL YEAR 94; FOREIGN REPORTS; PE61102F; WUPL2310GHAA; Arctic; Svalbard; Greenland; Norway; East Greenland; EISCAT
• Online Access: http://www.dtic.mil/docs/citations/ADA280715; http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA280715

Based on extensive, diagnostic ground observations in the Svalbard area (mainly at Ny Alesund at 76 deg A) together with simultaneous, coordinated measurements from east Greenland the EISCAT radars as well as DMSP satellite- recordings, structures and dynamics of the dayside cleft and polar cap region have been obtained. This is an important prerequisite to the understanding of the physics of dayside boundary layers processes. Several papers have been published, many lectures given and a NATO Advanced Workshop related to this program arranged. Possible generation mechanisms of dayside cusp/cleft auroras including magnetic merging, external pressure pulses, Kelvin-Helmholtz- instabilities, and dynamo processes by intruding plasma elements are discussed. Characteristics of these boundary layer processes and their ionospheric effects are a major objective of these studies. The Fast Explorer project as well as the new EISCAT radar. SBI-AD-E201971.