Articles | Volume 33, issue 7
Ann. Geophys., 33, 837–844, 2015
https://doi.org/10.5194/angeo-33-837-2015
Ann. Geophys., 33, 837–844, 2015
https://doi.org/10.5194/angeo-33-837-2015

Regular paper 20 Jul 2015

Regular paper | 20 Jul 2015

Auroral ion acoustic wave enhancement observed with a radar interferometer system

N. M. Schlatter et al.

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The high-latitude ionosphere is a dynamic region where particle precipitation leads to various phenomena including wave instability and turbulence. Anomalous echoes related to aurora are observed in ground-based radar observations of the ionosphere. These echoes indicate enhanced ion acoustic fluctuations. In this article, we show that the origin of the echo is located in or close to the region of particle precipitation and that the echo region itself is limited to hundreds of meters.