Physical Sciences and Mathematics Commons^™

Acoustic Waves In The Upper Atmosphere, Geoffrey Blayne Schulthess

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Atmospheric waves can be generated by tropospheric sources such as earthquakes and explosions, causing significant disturbances in the upper atmosphere and ionosphere, where radio wave communications take place. For this analysis, they will be separated into two sub-groups called acoustic waves and gravity waves. Because each of these waves have unique frequency ranges, they can be observed and measured in order to determine their source type and location. Past studies attempted to build the connections between these waves with severe storms and earthquakes, which have improved our understanding of their complexity. Because of the complex nature of these waves, simplified …

Investigating Mesospheric Mountain Waves And Oh Temperature Dynamics Over Chile, David G. Soward

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Atmospheric gravity waves (GW) occur throughout the atmosphere, propagating from copious sources in the lower atmosphere into the upper neutral atmosphere and ionosphere. There are many sources of GW, most of them are associated with strong weather disturbances which are highly transient in nature. Another source of GW are strong winds blowing over prominent mountains that generate mountain waves (MW.) An important property of all of these waves is that they propagate upwards, carrying large amounts of energy and momentum which can be deposited in the upper atmosphere as the waves saturate and break. The Andes Lidar Observatory (ALO) was …

The Advanced Mesospheric Temperature Mapper: Remote Sensing Of The Nighttime Oh Layer During The Deepwave Campaign, Pattilyn Mclaughlin

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

The Advanced Mesospheric Temperature Mapper [AMTM] is a remote sensing instrument developed at Utah State University to map temperature structures in the hydroxyl airglow emission at ~87 km. These maps can then be used to quantify wave field characteristics and to observe general climatology trends. Two recent campaigns that it has been involved with are the DEEPWAVE campaign in Lauder, New Zealand and the Super Soaker campaign in Fairbanks, Alaska.

The Deep Propagating Gravity Wave Experiment, “DEEPWAVE” was an international measurement and modeling program intended to characterize the generation and propagation of a broad range of atmospheric gravity waves with …

On The Propagation Of Atmospheric Gravity Waves In A Non-Uniform Wind Field: Introducing A Modified Acoustic-Gravity Wave Equation, Ahmad Talaei

All Graduate Plan B and other Reports, Spring 1920 to Spring 2023

Atmospheric gravity waves play fundamental roles in a broad-range of dynamical processes extending throughout the Earth’s neutral atmosphere and ionosphere. In this paper, we present a modified form for the acoustic-gravity wave equation and its dispersion relationships for a compressible and non-stationary atmosphere in hydrostatic balance. Importantly, the solutions have been achieved without the use of the well-known Boussinesq approximation which have been used extensively in previous studies.

We utilize the complete set of governing equations for a compressible atmosphere with non-uniform airflows to determine an equation for vertical velocity of possible atmospheric waves. This intricate wave equation is simplified …