| Detailed Dayside Auroral Morphology as a Function of Local Time for southeast IMF Orientation: Implications for Solar Wind-Magnetosphere Coupling |
03 NOV 2004 |
25 pages |
| Authors:
P. E. Sandholt; C. J. Farrugia; W. F. Denig; AIR FORCE RESEARCH LAB HANSCOM AFB MA SPACE VEHICLES DIRECTORATE
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 | In two case studies we elaborate on spatial and temporal structures of the dayside aurora within 08:00-16:00 magnetic local time (MLT) and discuss the relationship of this structure to solar wind-magnetosphere interconnection topology and the different stages of evolution of open field lines in the Dungey convection cycle. The detailed 2-D auroral morphology is obtained from continuous ground observations at Ny Alesund (76 deg magnetic latitude (MLAT)), Svalbard during two ... |
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| Dayside Aurora and the Role of IMF\By\/\Bz\: Detailed Morphology and Response to Magnetopause Reconnection |
01 JAN 2004 |
17 pages |
| Authors:
P. E. Sandholt; C. J. Farrugia; W. F. Denig; AIR FORCE RESEARCH LAB HANSCOM AFB MA SPACE VEHICLES DIRECTORATE
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| Large statistical surveys have demonstrated that the various plasma populations of the dayside magnetosphere are manifested in corresponding particle precipitation regimes, as observed from satellites in polar orbit (Newell and Meng, 1988; Newell et al., 1989; Newell and Meng, 1994). While statistical satellite data gives the general (averaged) precipitation pattern, case studies of ground observations of the aurora provide detailed information on the spatio-temporal structure of the precipitation pattern within ... |
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| Studies of the Dayside Boundary Layer Processes Based on Ground Observations in the Svalbard Area. Phase 1 |
13 JAN 94 |
16 pages |
| Authors:
A. Egeland; J. A. Holtet; P. E. Sandholt; OSLO UNIV (NORWAY) DEPT OF PHYSICS
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| 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, ... |
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| Electrodynamics of the Dayside Cleft Region Based on Ground Observations at Svalbard |
20 JAN 93 |
15 pages |
| Authors:
A. Egeland; J. A. Holtet; P. E. Sandholt; OSLO UNIV (NORWAY) INST OF PHYSICS
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| Based on extensive, diagnostic ground observations in the Svalbard region (mainly at Ny Alesund at 76 deg A) together with simultaneous, coordinated measurements from Greenland and Heiss Island spanning - 4 hours in magnetic local time, - together with the EISCAT radars as well as DMSP satellite-recordings, essential information on the dynamics of the dayside cleft and polar cap region (auroral, ionospheric and electric Field) have been obtained. This is ... |
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| The Electrodynamics of the Dayside Cleft Region Based on Ground Observations at Svalbard |
31 JAN 92 |
10 pages |
| Authors:
A. Egeland; J. A. Holtet; P. E. Sandholt; OSLO UNIV (NORWAY) INST OF PHYSICS
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| Svalbard is the Arctic archipelago between 10 deg and 35 deg east and 74 deg and 81 deg north. The geomagnetic latitude spans from approximately 71 deg to 77 deg north. This makes Svalbard an ideal place for studies of dayside aurora and processes in the magnetospheric boundary regions. Conjugacy to stations in Antarctica makes Svalbard even more attractive. The observatory at Ny-Alesund is the master station in a network ... |
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| The Electrodynamics of the Dayside Cleft Region Based on a Net of Ground Observations in the Svalbard Area |
28 JAN 91 |
14 pages |
| Authors:
A. Egeland; J. A. Holtet; P. E. Sandholt; B. Jacobsen; OSLO UNIV (NORWAY) INST OF PHYSICS
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| Svalbard is the Arctic archipelago between 10 deg and 35 deg east and 74 deg and 81 deg north. The geomagnetic latitude spans from approximately 71 deg to 77 deg north. This makes Svalbard an ideal place for studies of dayside aurora and processes in the magnetospheric boundary regions. Conjugacy to stations in Antarctica makes Svalbard even more attractive. The observatory at Ny-Alesund is the master station in a network ... |
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