2026-09-21T12:14:13Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/69231 2023-07-11 col_2142_5131 col_2142_8888 com_2142_5130 com_2142_8887 com_2142_234

Weiland, Richard Mark 2014-12-15T19:04:18Z 2014-12-15T19:04:18Z 10000-01-01 1982 1982 The development and first observations of the partial-reflection drifts experiment at Urbana, Illinois (40(DEGREES)N) are described. The winds data from the drifts experiment are compared with electron concentration data obtained by the differential-absorption technique to study the possible meteorological causes of the winter anomaly in the mesosphere at midlatitudes. Winds data obtained by the meteor-radar experiment at Urbana are also compared with electron concentration data measured at Urbana. A significant correlation is shown in both cases between southward winds and increasing electron concentration measured at the same location during winter. The possibility of stratospheric/mesospheric coupling is investigated by comparing satellite-measured 0.4 mbar geopotential data with mesospheric electron concentration data. No significant coupling was observed. The winds measured at Saskatoon, Saskatchewan (52(DEGREES)N) are compared with the electron concentrations measured at Urbana in an effort to establish a transport path from the auroral zone to Urbana. No constant fixed relationship is shown, but significant correlations are shown for short segments of the winter. A significant coherence is observed at discrete frequencies during segments of the winter. Made available in DSpace on 2014-12-15T19:04:18Z (GMT). No. of bitstreams: 1 8209642.pdf: 7065063 bytes, checksum: 6196729f0661d09b441dc78c113e4361 (MD5) Previous issue date: 1982 Embargo set by: Seth Robbins for item 69397 Lift date: Forever Reason: Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs Restricted to the U of I community idenfinitely during batch ingest of legacy ETDs U of I Only 240 p. Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 1982. http://hdl.handle.net/2142/69231 (UMI)AAI8209642 Physics, Atmospheric Science Investigation of the Winds and Electron Concentration Variability in the D Region of the Ionosphere by the Partial-Reflection Radar Technique text Electrical Engineering Electrical Engineering University of Illinois at Urbana-Champaign Dissertation Ph.D.