Calendar

Sep
20
Tue
Colloquium Thesis Proposal: Ethan Dederick
Sep 20 @ 3:00 pm – 4:00 pm
Colloquium Thesis Proposal: Ethan Dederick @ Science Hall 310

Utilizing Planetary Oscillations to Constrain the Interior Structure of the Jovian Planets

Ethan Dederick

Seismology has been the premier tool of study for understanding the
interior structure of the Earth, the Sun, and even other stars. Yet in this
thesis proposal, we wish to utilize these tools to understand the interior
structure of the Jovian planets, Saturn in particular. Recent observations
of spiral density structures in Saturn’s rings caused by its oscillations
have provided insight into which modes exist within Saturn and at what
frequencies. Utilizing these frequencies to compare to probable mode can-
didates calculated from Saturn models will also us to ascertain the interior
profiles of state variables such as density, sound speed, rotation, etc. Using
these profiles in a Saturn model, coupled with tweaking the interior struc-
ture of the model, i.e. the inclusion of stably stratified regions, should
allow us to explain which modes are responsible for the density structures
in the rings, as well as predict where to look to find more such structures.
In doing so, we will not only have a much greater understanding of Sat-
urn’s interior structure, but will have constructed a method that can also
be applied to Jupiter once observations of its mode frequencies become
available. In addition, we seek to explain if moist convection on Jupiter is
responsible for exciting its modes. We aim to do this by modeling Jupiter
as a 2D harmonic oscillator. By creating a resonance between moist con-
vective storms and Jovian modes, we hope to match the expected mode
energies and surface displacements of Jupiter’s oscillations.

Oct
1
Sat
Cume #409
Oct 1 @ 10:00 am – 12:00 pm
Oct
29
Sat
Cume #410
Oct 29 @ 10:00 am – 12:00 pm
Nov
4
Fri
New Mexico Symposium
Nov 4 all-day

 

http://www.aoc.nrao.edu/events/nmsymposium/2016/

Nov
19
Sat
Cume #411
Nov 19 @ 10:00 am – 12:00 pm
Jan
21
Sat
Cume #412
Jan 21 @ 10:00 am – 12:00 pm
Feb
18
Sat
Cume #413
Feb 18 @ 10:00 am – 12:00 pm
Mar
11
Sat
Cume #414
Mar 11 @ 10:00 am – 12:00 pm
Apr
1
Sat
Cume #415
Apr 1 @ 10:00 am – 12:00 pm
Apr
29
Sat
Cume #416
Apr 29 @ 10:00 am – 12:00 pm