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Penetration Jet DMSP F April MLT

Published byYandi Darmali Modified over 5 years ago

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Presentation on theme: "Penetration Jet DMSP F April MLT"— Presentation transcript:

1 Penetration Jet DMSP F April MLT A Strong Polarization Electric Field forms in Low-Conductivity Region between the Inner Edge of the Plasmasheet Precipitation and the Plasmapause Plasmapause Plasmapause Trough Plasmasheet Penetration Jet

2 M-I Coupling: Ring Current -Plasmasphere Interactions
Millstone Hill

3 Penetration Jet Strong Stormtime Electric Fields appear between the plasmasheet and the plasmapause Statistical Studies indicate the Persistence and Predictability of the Penetration Jet Storm Enhanced Density is formed where the Penetration Jet overlaps the Plasmasphere Polarization Electric Fields Structure the Outer Plasmasphere forming Plasmaspheric Tails

4 Millstone Hill Radar Scans Span Auroral and Penetration Jet Convection
20-Year Database used to Determine Statistical Features

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8 Statistical Patterns Poleward-Directed Electric Field Spans the Midnight Sector Equatorward of the Auroral Two-Cell Convection Pattern

9 PJ Overlaps Outer Plasmasphere
March 31, 2001 DMSP F13

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11 Effects of Penetrating Electric Fields
Cross-tail electric fields energize and inject particles into the inner magnetosphere forming the disturbance Ring Current Penetrating electric fields uplift and perturb the Plasmasphere and low-latitude ionosphere Storm-Enhanced Density (SED) and detached plasmas are formed as the Penetration Jet overlaps the outer plasmasphere Injected Energetic Ions are Destabilized in Regions of Enhanced Plasma Density

12 Dual Effects of Penetrating Electric Fields
Detached Plasmaspheric Regions Penetration Jet Strips Away Outer Plasmasphere Radial E Field Eastward Penetration Electric Field Uplifts Equatorial Ionosphere Penetration Electric Field Uplifts Equatorial Ionosphere Polarization Jet Strips Away Outer Plasmasphere

13 GPS Map of TEC July 15, :15 UT Plumes & Blobs of Storm-Enhanced Density Sweep across Mid Latitudes Penetration Jet Enhancement and Poleward Expansion of Equatorial Anomaly

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