Colloquium
Last Updated January 18, 2024
The upcoming colloquium is shown below. The current schedule for the remainder of the semester can be seen here. Previous abstracts of colloquiums from this semester will be archived in the future.
When there's a colloquium, come meet the speaker and have coffee & snacks at 3:30
pm in Workman 312, then attend the talk at 4 pm in Workman 101! You can also attend
via Zoom (the meeting ID is 922 7877 4516 and the pass code is 521185).
Measuring and Characterizing Disturbances in the Earth's Ionosphere
Speaker: Major Daniel Emmons (USAF)
Date: January 25, 2024 @ 4pm
Workman Center, Room 101
Abstract: The Earth's ionosphere plays a vital role in many modern technologies, especially with respect to High Frequency (NF) & satellite communications and global navigation (GPS). While 'calm' ionospheric conditions do not significantly impact satellite communications or GPS, ionospheric disturbances can degrade or halt operations entirely. In this talk, common methods for monitoring global ionospheric conditions will be introduced, with a focus on measuring and characterizing ionospheric disturbances. Further, a frequent mid-latitude ionospheric disturbance, sporadic-E, will be discussed in detail with an emphasis on using GPS radio occultation to monitor formation and extract characteristics.