Spatial observations by the CUTLASS coherent scatter radar of ionospheric modification by high power radio waves
Abstract. Results are presented from an experimental campaign in April 1996, in which the new CUTLASS (Co-operative UK twin-located Auroral Sounding System) coherent scatter radar was employed to observe arti®cial ®eld aligned irregularities (FAI) generated by the EISCAT (European Incoherent SCATter...
| Main Authors: | , , , , , , |
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| Other Authors: | |
| Format: | Text |
| Language: | English |
| Published: |
1997
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| Subjects: | |
| Online Access: | http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.371.8057 http://hal.archives-ouvertes.fr/docs/00/31/64/98/PDF/angeo-15-1412-1997.pdf |
| Summary: | Abstract. Results are presented from an experimental campaign in April 1996, in which the new CUTLASS (Co-operative UK twin-located Auroral Sounding System) coherent scatter radar was employed to observe arti®cial ®eld aligned irregularities (FAI) generated by the EISCAT (European Incoherent SCATter) heating facility at Tromsù, Norway. The distribution of backscatter intensity from within the heated region has been investigated both in azimuth and range with the Finland component of CUTLASS, and the ®rst observations of arti®cial irregularities by the Iceland radar are also presented. The heated region has been measured to extend over a horizontal distance of 170 50 km, which by comparison with a model of the heater beam pattern corresponds to a threshold electric ®eld for FAI of between 0.1 and 0:01 V/m. Di€erences between ®eldaligned and vertical propagation heating are also presented. 1 |
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