Abstract

The first results are presented for observations of the VLF emissions (1–15 kHz) conducted at polar latitudes during the expedition Transarctica 2019, which was organized by the Arctic and Antarctic Research Institute. The observations were conducted onboard the Akademik Treshnikov vessel with highly sensitive equipment developed at the Polar Geophysical Institute. Bursts of the VLF emission of the auroral hiss type were registered on 13 of the 26 observational days. These bursts were simultaneously observed at Barentsburg Observatory, which is ~600 km to the west and ~160 km to the south. However, these bursts were not registered at lower auroral latitudes at the same meridian at Lovozero Observatory or at a Finnish station, Kannuslehto. One of the most typical cases, the auroral VLF hiss of April 11, 2019, is considered in detail. It is concluded that the region of the exit of the studied auroral hiss from the ionosphere to the Earth’s surface was local and limited in latitude.

中文翻译：

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Transarctica 2019极地考察期间VLF观测的初步结果

摘要

最初的结果是对北极和南极研究所组织的Transarctica 2019远征期间在极纬度进行的甚低频辐射（1-15 kHz）观测的介绍。观测是在极地地球物理研究所开发的高度敏感设备的Akademik Treshnikov船上进行的。在26个观测日中的13个观测日记录了极光嘶嘶声类型的VLF爆发。在巴伦斯堡天文台同时观测到了这些爆发，该天体位于西边约600公里，南边约160公里。但是，在洛沃泽尔天文台的同一个子午线或芬兰的坎努斯莱赫托子午线，在较低的极光纬度上没有记录到这些爆发。其中最典型的案例之一是2019年4月11日的极光VLF嘶嘶声。