EISCAT 3D Atmosphere and Geospace Radar:Current Status and Science Outlook for Meteors (IMC 2024)

Описание: Johan Kero, Daniel Kastinen, Maria Gritsevich

The EISCAT 3D radar facility consists of a phased array transmitter/receiver site near
Skibotn in Norway, with remote receiver sites near Kiruna in Sweden and Karesuvanto
in Finland. The three sites are separated by 150 km and are all located north of the
Arctic Circle. Construction began in September 2017, and the radar system is expected
to be operational by the end of 2025. Each site comprises an antenna array with
5,000–10,000 elements. The Skibotn site has a combined 3.7 MW pulsed transmitter
power (25% duty cycle) at an operating frequency of 233 MHz.

EISCAT 3D is designed to enable novel measurement techniques that have never been
combined in a single radar system: volumetric-, aperture synthesis-, and multi-static
imaging, tracking, and adaptive experiments. This unique versatility will allow for meteor
head echo observations alongside other radar experiments to investigate how
Earth’s atmosphere is coupled with space.

Current estimates of total meteoric mass influx are uncertain, ranging from a few to
several hundred tons per day. Radar observations provide access to a portion of the
mass distribution that is difficult to quantify using other methods. Tristatic meteor head
echo observations with EISCAT 3D will enable accurate trajectory and orbit information
and open new avenues to study the physics of meteors, such as atmospheric fragmentation
processes and differential ablation.

(Sound has been modified to avoid the use of a copyrighted theme during the animation play)

https://imc2024.imo.net/program