Auroral Statistics

Diurnal auroral occurrence statistics obtained via machine vision

Modern ground-based digital auroral All-Sky Imager (ASI) networks capture millions of images annually. Machine vision techniques are widely utilised in the retrieval of images from large data bases. Clearly, they can play an important scientific role in dealing with data from auroral ASI networks, facilitating both efficient searches and statistical studies. Furthermore, the development of auto...

Luminosity variations in several parallel auroral arcs before auroral breakup

Variation of the luminosity in two parallel auroral arcs before auroral breakup has been studied by using digitised TV-data with high temporal and spatial resolution. The intervals when a new arc appears near already existing one were chosen for analysis. It is shown, for all cases, that the appearance of a new arc is accompanied by fading or disappearance of another arc. We have named these ev...

Section III Auroral Region

Jupiter’s polar auroral emissions

[1] This paper reports a study of Jupiter’s polar auroral emissions observed in an extended series of FUV images. They were obtained on seven days, during winter 2000–2001, with the STIS camera on board the Hubble Space Telescope. The fixed pointing yielded highly accurate and consistent tracking of emisson features as Jupiter rotated, allowing the analysis of the auroral morphology and brightn...

Auroral radiance modeling with SAMM2

This paper presents results that demonstrate the auroral modeling capabilities of the Air Force Research Laboratory (AFRL) SAMM2 (SHARC And MODTRAN Merged 2) radiance code. A scene generation capability is obtained by coupling SAMM2 with a recently developed Clutter Region Atmosphere and Scene Module (CRASMO), which provides an approach for rapid generation of time sequences and images of radia...