Investigations of thermospheric-ionospheric dynamics with 6300-Å images from the Arecibo Observatory

摘要: Pilot observations were conducted at Arecibo, Puerto Rico, using an all-sky, image-intensified CCD camera system in conjunction with radar, ionosonde, and Global Positioning System (GPS) diagnostic systems during the periods January 19–28, 1993, February 21 to August 22, 1995. These represent first use of campaign mode operations imager Arecibo for extended F region observations. The 1993 period (the so-called “10-day run”) yielded a rich data set gravity wave signatures, perhaps case direct imaging thermospheric train properties region. 6-month 1995 revealed two additional optical signatures dynamics. A brightness 6300 passing rapidly through field view (FOV) has been linked meridional winds driven by midnight temperature maximum (MTM) pressure bulge. On May 3, 1995, geomagnetic activity, 6300-A airglow depletion pattern entered FOV. Such effects equatorial spread instabilities that rise above equator heights near 2500 km, thereby affecting Arecibo's L = 1.4 flux tube.