Using CReSIS Radar Data to Determine Ice Thickness
Using CReSIS Radar Data to Determine Ice Thickness and Surface Elevation at Pine Island Glacier
Team Members: Nyema Barmore (ECSU), Glenn Michael Koch (ECSU)
The Pine Island Glacier region of Antarctica is an area under intense
scrutiny because of its sensitivity to climate change. Pine Island
Glacier is located in Western Antarctica and drains a large portion
of the West Antarctic Ice Sheet. It has shown to be particularly
vulnerable to glacial ablation . The 2012 Research Experience for
Undergraduates (REU), Ocean Marine Polar Science (OMPS), Penn
State Team analyzed CReSIS radar data to identify the ice-surface
and ice-bottom features. From this, both elevation and ice
thickness at Pine Island Glacier were determined. The team utilized
MATLAB along with an add-on picker program; The Penn State
Environment for Seismic Processing (PSESP), developed at
Pennsylvania State University. MATLAB is a programming
environment that analyzes data as well as many other technical
processing applications. With the picker program the team selected
specific, maximum-strength radar peaks on individual radar traces
and applied a formula to compute the distance traveled by the
signal. The difference between the distance traveled from the
surface and bottom features was calculated to produce an ice
thickness map. The team results will provide data that will aid in
modeling of the Pine Island Glacier.
Mentor: Dr. Sridar Anandakrishnan (PSU), Peter Burkett (PSU )
The first step in the data analysis was to load the data set
to be analyzed into the PSESP.
Pine Island Bay
(100 West Longitude - 112 West
Step 1: Take the Picker difference value of time between the
bottom and surface horizon.
Step 2: Divide by 10. This converts it from "samples" to real time
(in micro seconds).
Step 3:Divide that time by 2. This converts the "two way" travel
time (going from the plane to the bottom of the ice and back to
plane) into a one way travel time (from the plane to the bottom of
Loaded data displayed as a 400 trace data panel
Automatic pick by PSESP
Step 4: Multiply that number by 170 (which converts time to
distance because radar waves travel at 170 meters/uS in ice).
Plotted bottom and top surface
Analysis provided numerical elevation
data from CReSIS radar data sets that
could be plotted and compared to
Data plots did correlate to echogram
Data plots provided a reliable source to
perform ice thickness calculations
With the completed calculations of Pine
Island Glacier ice thickness, a 3D model
of the glacier can be created. The 3D
model may be used in several different
ways to improve upon the study of the
glacier. One way the model may be used
is to compare present day and future ice
Plotted bottom surface
The team would like to acknowledge Dr. Linda B. Hayden,
Dr. Sridar Anandakrishnan, and Mr. Peter Burkett for the
guidance provided during the period of this research.
Flight Path With Single Pass Highlighted
Manually picked panel
Plotted bottom surface
Paterson, Cuffey, "The Physics of Glaciers".
N. S. a. I. D. Center, "All About Glaciers," [Online]. Available: http://nsidc.org/cryosphere/glaciers/questions/what.html. [Accessed 2 July 2012
"Eccyclopedia.com," [Online]. Available: http://www.encyclopedia.com/doc/1O13-calving.html. [Accessed 2 July 2012].
Research.gov, "Multi-Radar Mapping of Polar Ice," [Online]. Available: http://www.research.gov/research-portal/appmanager/base/desktop. [Accessed 2 July 2012
"Merriam-Webster.com," [Online]. Available: http://www.merriam-webster.com/dictionary/radar. [Accessed 9 July 2012].
"Molecular Expressions," [Online]. Available: http://www.micro.magnet.fsu.edu/primer/java/speedoflight/index.html. [Accessed 9 July 2012].
Big Data Analytics over Encrypted Datasets with Seabed . AntonisPapadimitriou , RanjitaBhagwan , NishanthChandran , Ramachandran Ramjee , Andreas Haeberlen , HarmeetSingh , Abhishek Modi , SaikrishnaBadrinarayanan University of Pennsylvania, Microsoft Research India, UCLA ...
Creativity and problem solving skills are crucial tools. 4 Recent research into brain based learning wells us that the brain has a natural capacity to integrate - the brain seeks patterns, connectedness and meaning. 5 and 6 Its natural that...
Anxious. Word used in a sentence. Sounds Like: Synonym: Antonym: Brave. Parts of Speech: Definition: Leroy was anxious to know if he had made the basketball team. greatly worried or eager. Adjective. Afraid
During this presentation, I would like to help you to understand the what, why, who, and how of book banning and challenging. First and foremost, I would like to address the "why" of book banning. People have a range of...
The Golden Net: Hephaestus, Aphrodite,& Ares Known as the lame god, Hephaestus was born weak and crippled. Displeased by the sight of her son, Hera threw Hephaestus from Mount Olympus, and he fell for a whole day before landing in...
Discussion Thoughts Do you think Roy should place himself at risk by becoming involved with Mullet Fingers and his cause? Why do you think Mullet Fingers would not accept help from Breatrice and Roy? Symbolism - A symbol in literature...
Ready to download the document? Go ahead and hit continue!