Sökning: "PMSE"

Hittade 2 uppsatser innehållade ordet PMSE.

1. 1. Studies of the PMWE : Polar Mesosphere Winter Echoes

   Master-uppsats, Luleå tekniska universitet/Institutionen för system- och rymdteknik

   Författare :Simon Persson; [2022]
   Nyckelord :Polar; Mesosphere; Winter; Echoes; ESRAD; Infrasound; PMWE; PMSE; Summer; Radar; VHF; MST; MLT; SPE; HSS; Solar; Wind; evanescent; viscosity; FCA; 42;

   Sammanfattning : This Master thesis examines a phenomenon that occurs in the upper polar atmosphere, namely, Polar Mesospheric Winter Echoes, or PMWEs. PMWEs are radar echoes observed by Very High Frequency Mesosphere Stratosphere Troposphere (VHF MST) radar, from altitudes of 60 to 76 km at 7 to 15 UT, in the winter months from the middle of September to the beginning of May. LÄS MER

3. 2. Interaction between Metallic Microparticles and Mesospheric Plasma

   Kandidat-uppsats, KTH/Skolan för teknikvetenskap (SCI)

   Författare :Hannes Lindström; Michael Nivala Fernberg; [2014]
   Nyckelord :;

   Sammanfattning : SCRAP is a student experiment that aims to validate theories on electron density fluctuations induced by the presence of dust particles connected to the phenomenon of polar mesospheric summer echoes (PMSE). Radar echoes are to be measured from a dust cloud of metallic microparticles released into the mesosphere above northern Sweden using a sounding rocket in spring 2015. LÄS MER