# Project Contract -- ESM 5984

## Name: Elan Yaniv (eyaniv@birch.ee.vt.edu)

## Title: Visualization of Ionospheric Processes

## Project Description

Due to the plasma nature of the ionosphere, the study of electromagnetic
wave propagation and other processes can be a complicated issue. One way of
modelling ionospheric processes is through the set of equations:

Equation 1 is known as the continuity equation, and equation 2 is known as the
potential equation.

## Progress (as of 2/22/95)

My current research involves solving these equations under different sets of
parameters and initial conditions and observing the results. I have developed a
FORTRAN program that solves the above set of equations using spectral techniques.
As of now the program is a 2 dimensional solver, and I do not expect to add the
third dimension during the time frame of this project. The program uses a
predictor-corrector algorithm for time advancement, and I am currently trying to
speed up the program by also incorporating a combination of leapfrog and
leapfrog-trapezoidal algorithms. Therefore, I am currently generating datasets
that I will need to complete my project. The solution of the above set of
equations is computationally intensive, and I hope to be able to use a
supercomputer to speed up the generation of datasets.

## Objectives

The main objectives of the class project will be:

1) To develop a system that will allow a user to gain a better understanding of
ionospheric processes. Some of the processes that will be observed are various
regions of turbulence due to gradients and instabilities in shear and wind
velocities. This can be done by developing an interactive system that will allow
a user to navigate through the graphics, and to observe the results of changing
certain parameters.

2) Develop a brief multimedia presentation to present the results to an audience
of graduate students not familiar with electromagnetic wave propagation or
ionospheric properties.

## Tools

The visualization emphasis will be on developing an AVS module. I am using AVS
because of the software packages available it allows for the most flexibility.
As of yet I have not explored the tools available in the Multimedia lab, but I am
anticipating that my final multimedia presentation will be placed onto a VHS
videotape.