Penetration Jet DMSP F April MLT

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Presentation transcript:

Penetration Jet DMSP F15 6 April 2000 21 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

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

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

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

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

PJ Overlaps Outer Plasmasphere March 31, 2001 DMSP F13

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

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

GPS Map of TEC July 15, 2000 22:15 UT Plumes & Blobs of Storm-Enhanced Density Sweep across Mid Latitudes Penetration Jet Enhancement and Poleward Expansion of Equatorial Anomaly