The Graduate students association is pleased to announce the “Graduate Colloquium Series” for the Winter term. The series will be joined with the coffee/tea time event of our association.
This event is a great opportunity for young and old graduate students in the department to present the progress of their research in an open and less formal environment. Moreover, we will all get an idea about the amazing research that is going on to the very diverse research fields of our Department!
The event is comprised of both an academic and a social component. After the presentation we may have a discussion regarding the research of our fellow and give our feedback! The coffee time that follows is one more opportunity to bring us together and boost our grad social life.
Though the core of the event is based on grad students, undergrads -especially 4th year undergrads interesting in pursuing grad studies- and faculty are very welcome to attend.
Summarizing event’s details:
When: Every Thursday
Where: BRG 213
You can sign-up to present either by signing-up to: https://docs.google.com/spread
or by emailing Athina (email@example.com).
You may sign up to give a talk any of the available weeks.
Starting this week, we are going to pump up the crowd with our first presenter Dylan!
Bio: Dylan completed a B.Sc. in Earth and Environmental Science and a B.Sc. in Physical Science at McMaster University with a focus on geophysics and astronomy. He is now currently completing a Ph.D. at York University in Earth and Space Science under Dr. Mike Daly with a research focus on materials measurement and radar modelling applied to planetary surfaces.
Geocolloquium Series Presentation
Jan. 26, 2017, BRG:213
Title: Radar observations and experimental validation constraining regolith properties of planetary bodies
Radar has been used extensively to observe planetary bodies in our solar system as it can be applied from both terrestrial antennae or orbiting satellites. Polarimetric radar allows geological interpretation of both surficial and sub-surface features such as density, porosity, and composition among others. In order to constrain these interpretations it is necessary to estimate the complex permittivity of the material that the radar wave is interacting with. In the case that this information is not readily available for a target, accurate estimation of this quantity must be performed. Laboratory experiments measuring the permittivity of varying geologic materials can be used to validate an estimate, however, these measurements need to be conducted under varying environmental parameters to simulate the conditions present for a typical planetary regolith. Currently radar is an optimal choice for observing asteroids and comets and providing spin-state and shape models. Attempts have been made at using laboratory observations to estimate the permittivity of asteroid regolith to characterize the surface properties, but in most cases the observations used are too general to provide a meaningful physical interpretation. Current research at York aims at increasing the accuracy and applicability of permittivity measurements in order to increase our understanding of asteroid surfaces using radar. NASA’s OSIRIS-REx as well as JAXA’s Hayabusa-2 missions will provide ground-truth measurements of asteroid surfaces that will be used to ratify the models developed in this research.