15:30 - 16:50
Room: Conference room
Oral presentations
On small scale mesospheric dust structures and secondary charging effects observed by the MAXIDUSTY payload
Tarjei Antonsen, Ove Havnes
University of Tromsø, Tromsø, Norway

The MAXIDUSTY rocket campaign consisted of two payloads, launched from Andøya Space Center (69.17'N 16.1'E) on the 30th of June and 8th of July 2016 respectively. The instrumentation was aimed towards analyzing the multi-scale structure of mesospheric dust clouds, as well as characteristics such as size distribution and composition of nanoscale ice and meteoric smoke particles. In the present work, we compare measurements from the Faraday cup probe DUSTY and the impact Faraday cup MUDD. The MUDD probe utilizes an impact grid which fragments ice particles, and can be used to estimate the meteoric content of mesospheric ice. In particular, differences between the two probes in detected dust current signatures from small scale dust structures is analysed. We also discuss a method from which the dust size distribution, and thereof estimates for secondary charge production in MUDD, can be obtained from DUSTY measurements. It is found that the latter probe can be used reproduce secondary charge measurements from MUDD, and therefore act as a reference for it.


Reference:
Metal Layers 2-O-04
Session:
Metal Layers / MSP
Presenter/s:
Tarjei Antonsen
Topic:
2) Measurements of these ice layers and related parameters by modern technologies such as lidars, radars, imagers, interferometers, spectrometers, rocket-borne sensors and satellite-borne instruments, e. g. on AIM.
Presentation type:
Oral communication 15 min
Room:
Conference room
Chair/s:
Xinzhao Chu
Date:
Tuesday, 19 September
Time:
16:30 - 16:50