

Don't Panic Geocast
John Leeman and Shannon Dulin
John Leeman and Shannon Dulin discuss geoscience and technology weekly for your enjoyment! Features include guests, fun paper Friday selections, product reviews, and banter about recent developments. Shannon is a field geologist who tolerates technology and John is a self-proclaimed nerd that tolerates geologists.
Episodes
Mentioned books

May 20, 2016 • 47min
Episode 69 - “Pretentious way to say raindrop”
It’s raining. A lot. This week we talk about how we measure precipitation. We then discuss how beetles use stars to navigate in this week’s Fun Paper Friday. Rain Measurement Korean Cheugugi Tipping bucket Standard Rain Gauge Pluviometer of intensities Weighing Rain Gauge Optical Rain Gauge IR Rain Sensor Acoustic Rain Gauge Fun Paper Friday el Jundi, Basil, et al. “A Snapshot-Based Mechanism for Celestial Orientation.” Current Biology (2016). Washington Post Article Video of the Dung Beetle Dance Contact us: Show - www.dontpanicgeocast.com - @dontpanicgeo - show@dontpanicgeocast.com John Leeman - www.johnrleeman.com - @geo_leeman Shannon Dulin - @ShannonDulin

May 13, 2016 • 50min
Episode 68 - "It's kind of magical down there" Kiya Riverman
This week we interview Kiya Riverman about crawling around in caves… underneath a glacier! Join us to learn about glacial hydrology and what it’s like being inside the glacier. Kiya’s Website Into the Belly of a Glacier - EOS Cave Surveying and Mapping Structure from motion Kinect Point Clouds Moulin Esker Saint-Venant Equation Navier-Stokes Equations University Centre in Svalbard Fun Paper Friday Chameleons, they have a reputation for blending in, but it turns out their tongues are amazing. They can release energy with accelerations of over 200 gs! Anderson, Christopher V. “Off like a shot: scaling of ballistic tongue projection reveals extremely high performance in small chameleons.” Scientific reports 6 (2016). Contact us: Show - www.dontpanicgeocast.com - @dontpanicgeo - show@dontpanicgeocast.com John Leeman - www.johnrleeman.com - @geo_leeman Shannon Dulin - @ShannonDulin

May 3, 2016 • 1h
Episode 67 - "Rock Drills and Beer" Undersampled Radio
We’re back! On this surprise Tuesday show we talk with the hosts
of Undersampled Radio.
Pomeroy
Rock Drill
Matt Hall
(@kwinkunks)
Graham Ganssle
(@GrahamGanssle)
Undersampled Radio (iTunes)
Contact us:
Show - www.dontpanicgeocast.com - @dontpanicgeo -
show@dontpanicgeocast.com
John Leeman - www.johnrleeman.com - @geo_leeman
Shannon Dulin - @ShannonDulin

Apr 29, 2016 • 45min
Episode 66 - "I'm going to stomp my hat now" Stress, Strain, Folding, and Faulting
This week we talk about all the wonderful feedback we’ve been
getting, plus about how rocks can bend and break. We then tie it
all up by talking about material properties of wood and how
staining a violin can change its sound.
REPRODUCIBLE
COMPUTATIONAL RESEARCH: A history of hurdles, mostly
overcome
Folding and Faulting
Flat-lying
rocks
Nicolas
Steno
Principle of Original Horizontality
Stress
Strain
Stress vs. Pressure
Fold
Fault
Brittle-Ductile Transition
Fun Paper Friday
I’ve chuckled at people who go on about the finish affecting the
sound of an instrument… I’m so sorry:
Gilani,
Marjan Sedighi, et al. “Relationship of vibro-mechanical properties
and microstructure of wood and varnish interface in string
instruments.” Applied Physics A 122.4 (2016): 1–11.
Gizmodo article
Contact us:
Show - www.dontpanicgeocast.com - @dontpanicgeo -
show@dontpanicgeocast.com
John Leeman - www.johnrleeman.com - @geo_leeman
Shannon Dulin - @ShannonDulin

Apr 22, 2016 • 1h 5min
Episode 65 - "If it's not in the index, I'll be in my office" Katy Huff
Katy’s Website
Effective Computation in Physics
Physics Codes Seminar Git Page
Jupyter Notebooks
Software Carpentry
The Most Dangerous Writing App
Katy’s SciPy Lightning Talk
Jean Bahr
Fun Paper Friday
You are getting sleepy, very sleepy. On the count of three you will read this fun paper about hypnotic suggestion! Oakley, David A., and Peter W. Halligan. “Hypnotic suggestion: opportunities for cognitive neuroscience.” Nature Reviews Neuroscience 14.8 (2013): 565–576.
Contact us:
Show - www.dontpanicgeocast.com - @dontpanicgeo - show@dontpanicgeocast.com
John Leeman - www.johnrleeman.com - @geo_leeman
Shannon Dulin - @ShannonDulin

Apr 15, 2016 • 56min
Episode 64 - "A is for Anticline"
This week join us for our own alphabet aerobics as we fly through the geologic alphabet!
John’s Deines Lecture
A - Anticline
B - Breccia
C - Coulomb Failure
D - Dikes
E - Earthquake
F - Facies
G - GPR
H - Halimeda
I - Induced Polarization
J - Jadeite
K - Knickpoint
L - Leaverite
M - Moho
N - Nappe
O - Ooids
P - Paleomagnetism
Q - Quicksand
R - Rift
S - Seismic
T - Tektites
U - Uniformitarianism
V - Veins
W - Wadi
X - Xenolith
Y - Yardang
Z - Zonation
Fun Paper Friday
What can the continuity equation teach us about vampires and fluid flow? Sadhra, Makita, et al. “P5_2 The Draining of a Lifetime.” Physics Special Topics 14.1 (2015).
Orbital Mechanics Episode 52
Contact us:
Show - www.dontpanicgeocast.com - @dontpanicgeo - show@dontpanicgeocast.com
John Leeman - www.johnrleeman.com - @geo_leeman
Shannon Dulin - @ShannonDulin

Apr 8, 2016 • 44min
Episode 63 - "I did stay at a Holiday Inn Express last night"
We spend a lot of time working with our hands, in fact that’s why we can do science at all. It’s shocking the amount of science ignorance and lack of skill floating around. This got us wondering we are bad at science and where the practical skills we have are going. Then we found some articles!
There’s a good reason Americans are horrible at science
Mistakes Were Made (But Not by Me)
Understanding Science from Berkeley
Holiday Inn Express Example
Milgram Experiment
The Case for Working With Your Hands (NYTimes)
Shop Class as Soulcraft
Adam Savage on Arts and Skills
Fun Paper Friday
Art, science, math, and pizza. Checkout this delicious fun paper friday!
Haddley, Joel, and Stephen Worsley. “Infinite families of monohedral disk tilings.” arXiv preprint arXiv:1512.03794 (2015).
Gizmodo Summary
Starfleet Insignia
Contact us:
Show - www.dontpanicgeocast.com - @dontpanicgeo - show@dontpanicgeocast.com
John Leeman - www.johnrleeman.com - @geo_leeman
Shannon Dulin - @ShannonDulin

Apr 1, 2016 • 47min
Episode 62 - "A perpetually fresh hot tub" Hot Springs, AR
This week we talk about Hot Springs, the geologic feature and the town in Arkansas. Shannon is going there to visit and have students map the town’s complex geology and see the hot waters. We also scream about this week’s fun paper and the spectral characteristics of screams, alarms, and music.
Feedback
Quake Catcher Network
d3
Hot Springs
Springs
Mineral Springs
Hot Springs, Arkansas
Hot Springs National Park
Geologic Map
Geologic Resources Inventory Report - Hot Springs
Ouachita orogeny
Spring Boxes
Interesting Rock Types
Tufa
Novaculite
Cryptocyrstalline quartz
Tripoli and Special Silica Stone
Fun Paper Friday
Do you ever want to just scream? Now you’ll understand the spectral character of your scream and how it triggers the flight or fight response in those around you!
Arnal, Luc H., et al. “Human screams occupy a privileged niche in the communication soundscape.” Current Biology 25.15 (2015): 2051–2056.
Gizmodo Article about this Research
Contact us:
Show - www.dontpanicgeocast.com - @dontpanicgeo - show@dontpanicgeocast.com
John Leeman - www.johnrleeman.com - @geo_leeman
Shannon Dulin - @ShannonDulin

Mar 25, 2016 • 47min
Episode 61 - "Squiggly McSquiggleface"
This week we catchup on feedback and news, discuss ship naming conventions, and learn about an old gravity experiment! What do the Apollo missions and a Scottish mountain have in common? Listen to find out!
Feedback/News
RSS Boaty McBoatface
Undersampled Radio
Neat geological time scale from listener Martin
Listener Bart recommended an app called “Start10”
The Orbital Mechanics Episode 48
GNU Octave
The Apollo Story
Bizarre Lunar Orbits Article
Lunar Mare
There are four inclinations of orbits that are stable 27, 50, 76, and 86 degrees.
Schiehallion
Schiehallion Experiment
Pronounce it!
Contour Line History
Cavendish Experiment
Fun Paper
Is Moore’s law about to break and change the way we innovate our microprocessors?
More Than Moore by Waldrop
Contact us:
Show - www.dontpanicgeocast.com - @dontpanicgeo - show@dontpanicgeocast.com
John Leeman - www.johnrleeman.com - @geo_leeman
Shannon Dulin - @ShannonDulin

Mar 18, 2016 • 51min
Episode 60 - "Open Source is Magical" Martin Pratt
This week we are joined by guest Dr. Martin Pratt to discuss new ways to visualize your data and express the frustrations we still deal with on a daily basis.
Martin Pratt
Martin’s Website
Martin’s Github
Doppler Shift Scrolling
3D (stereo) screens
Microseism
Hololens
Science on a Sphere
Google Earth
NASA WorldWind
ESRI ArcGIS Earth
ParaView
GPlates
GMT
Python and Matplotlib
SnagIt
Screen Flow
Worldwide Telescope
Fun Paper Friday
Can your smartphone help warn of an impending earthquake? Find out with this week’s Fun Paper Friday!
Kong, Qingkai, et al. “MyShake: A smartphone seismic network for earthquake early warning and beyond.” Science Advances 2.2 (2016): e1501055.
Contact us:
Show - www.dontpanicgeocast.com - @dontpanicgeo - show@dontpanicgeocast.com
John Leeman - www.johnrleeman.com - @geo_leeman
Shannon Dulin - @ShannonDulin