A working model of simultaneous auroral activity over the entire polar region is presented in terms of the auroral substorm. The substorm has two characteristic phases, an expansive phase and a recovery phase. Each phase is divided into three stages, and characteristic auroral displays over the ...
The explosive release of energy within a terrestrial substorm marks the beginning of the most dynamic and vibrant auroral display in the solar-terrestrial environment1,2. Stored magnetic and thermal plasma energy is quickly converted to plasma kinetic energy, resulting in dramatic changes in both the...
Energy Educ Sci Technol Part A 28(2):1151–1158 Akasofu SI (1964) The development of the auroral substorm. Planet Space Sci 12(4):273–282 Agopyan H (2010) İstanbul İyonküresinde Ölçülen Şiddetli Manyetik Fırtına Etkilerine Jeofizikten Bir Örnek. Tubav Bilim ...
substorm developmentluminous regioninterplanetary magnetic fieldauroral intensity increasepoleward driftequatorward drift/ A9410S Aurora A9430L Magnetospheric magnetic storms, substormsThe direction of motion of the auroral forms in several sectors of the auroral oval during substorms is studied. The ...
auroral substorm[ə′rȯr·əl ′səb‚stȯrm] (geophysics) A characteristic sequence of auroral intensifications and movements occurring around midnight, in which a rapid poleward movement of auroral arcs produces a bulge in the auroral oval....
The research investigation described here concentrated on several dynamic features of substorm evolution during its breakup phase. More specifically, we focussed upon the development of a model for the propagation of the Westward Travelling Surge (WTS) as seen from the viewpoint of an active ionospher...
Imaging instrumentation on board the spacecraft Dynamics Explorer 1 (DE 1) is used to observe the large-scale motion of a surge over 7000 km along the auroral oval from near local midnight. Average speed of the surge is 2.2 km/s. Ground-based observations at Fort Yukon, Alaska, show the...
Titova, EE, Yahnin, AG, Santolik, O, Gurnett, DA, Jiricek, F, Rauch, J-L, Lefeuvre, F, Frank, LA, Sigwarth, JB, Mogilevsky, MM (2005) The relationship between auroral hiss at high altitudes over the polar caps and the substorm dynamics of aurora. Ann. Geophys. 23: pp. 2117...
We present a large statistical study of the spatial and temporal morphology of the auroral UV emission patterns during classical bulge-type auroral substorms. Images obtained by the Polar VIS Earth camera are utilized in the study of 119 carefully selected events. To reduce smearing of the key ...
Rosenberg, T. J., U. Wedeken, P. Stauning, A. Ranta, and H. Ranta (1983), Development of an auroral absorption substorm--Studies of substorm related absorption events in the afternoon-early evening sector, Planet. Space Sci., 31, 1415-1421, doi:10.1016/0032-0633(83)90017-X....