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

Abstract

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.

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Document Details

Document Type
Technical Report
Publication Date
Jan 13, 1994
Accession Number
ADA280715

Entities

People

  • A. Egeland
  • J. A. Holtet
  • P. E. Sandholt

Organizations

  • University of Oslo

Tags

Communities of Interest

  • Space

DTIC Thesaurus Topics

  • Artificial Satellites
  • Boundary Layer
  • Data Analysis
  • Databases
  • Dynamic Pressure
  • Ground Based
  • High Latitudes
  • Ionosondes
  • Ionosphere
  • Latitude
  • Measurement
  • Meteorological Satellites
  • Observation
  • Optical Signatures
  • Physics
  • Polar Cap
  • Solar Wind

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Space/Atmospheric Physics.
  • Theoretical Analysis.

Technology Areas

  • Space