Don't Panic Geocast

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 - @dontpanicge

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

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

This week we talk about mounds of feedback, learning new skills, and where to tackle the problem of computer programming. It’s for everyone and it’s really not scary! The Origins of MATLAB Just in time compilation LabView Fortran List of programming languages Agile Geoscience Pseudocode Python Crash Course Learn Python the Hard Way Effective Computation in Physics Fun Paper Friday What happens when a few Goodmans write a paper? You get a study on authorship that is paralleled by none! Thanks for the paper Andrew! Goodman, Allen C., et al. “A Few Goodmen: Surname‐Sharing Economist Coauthors.” Economic Inquiry 53.2 (2015): 1392–1395. Contact us: Show - www.dontpanicgeocast.com - @dontpanicgeo - show@dontpanicgeocast.com John Leeman - www.johnrleeman.com - @geo_leeman Shannon Dulin - @ShannonDulin

Hannah’s Website Seismic Sound Lab Girls’ Science Day Penn State Trash Can Experiment Research as Art Caddisfly jewelery Olivine under the microscope Earth Pottery LDEO Research as Art Swansea University Art Competition University of Arizona - The Art of Planetary Science University College London - Research Images as Art University of Florida - Finding Beauty in Biology University of Wisconsin, Madison - Science Meets Art Washington University in St. Louis - Research as Art Dinoflagellate Fun Paper Friday In this week’s Fun Paper Friday we find out what your eyes were doing when they weren’t rolled back in your head during those long classroom powerpoint presentations. Slykhuis, D. A., Wiebe, E. N., & Annetta, L. A. (2005). Eye-Tracking Students’ Attention to PowerPoint Photographs in a Science Education Setting. Journal of Science Education and Technology, 14(5–6), 509–520. http://doi.org/10.1007/s10956–005–0225-z Contact us: Show - www.dontpanicgeocast.com - @dontpanicgeo -

This week we’re going underground…to caves that is. We review the basics of how caves form, some unique features, and a lot of fun vocabulary. We also talk about the latest and greatest scientific discovery! How caves form Carbonic Acid Hydrogen Sulfide Video of Limestone vs. Acid Carlsbad Caverns Formation White-Nose Syndrome Karst Speleothems Stalactites vs. Stalagmites Cave Bacon (Flowstone) Cave Popcorn Troglobites Wind Cave Boxwork Calcite Lehman Cave Cave shields Alabaster Caverns Fun Paper Friday This week we learn about one of the most exciting physics discoveries in modern physics - the measurement of gravitational waves. Gravitational waves for dummies Text Messages from LIGO Abbott, B. P., et al. “Observation of Gravitational Waves from a Binary Black Hole Merger.” Physical Review Letters 116.6 (2016): 061102. Contact us: Show - www.dontpanicgeocast.com - @dontpanicgeo - show@dontpanicgeocast.com John Leeman - www.johnrleeman.com - @geo_leeman Shannon Dulin - @ShannonDulin

This week a special guest takes us to the moon by talking about lunar rocks and meteorites! The moon turns out to be a fascinating place, but probably won’t break up like in Seveneves. Brad’s Website Jim Papike Lunar Reconnaissance Orbiter Lunar Reconnaissance Orbiter Camera (LROC) Mars Exploration Rovers Apollo Lunar Rocks and Soils Collection Impact Basin Geology South Pole-Aitken Basin Yutu Rover Electron Microprobe Armalcolite (mineral) IDL ENVI Software ISIS Software ArcGIS ACT Zoomable Lunar Map Fun Paper Friday “Age Rules” from PSRD Borg, L. E., Gaffney, A. M., and Shearer, C. K. (2015) A Review of Lunar Chronology Revealing a Preponderance of 4.34–4.37 Ga Ages, Meteoritics & Planetary Science, v. 50, p. 715–732, doi: 10.1111/maps.12373. Contact us: Show - www.dontpanicgeocast.com - @dontpanicgeo - show@dontpanicgeocast.com John Leeman - www.johnrleeman.com - @geo_leeman Shannon Dulin - @ShannonDulin

Why do mountains form, earthquakes happen, and volcanoes form where they do? The answer is plate tectonics. This week we explore the history of being wrong about how the Earth works. Shannon’s Keyboard Plate Tectonics Tectonics is from the Greek tekton or “builder” Ben Franklin’s Letter Alfred Wegener The Origin of Continents and Oceans (Book by Wegener) Mesosaurus Arthur Holmes (1928) NOAA Seafloor Spreading Activity Seafloor spreading proposed by Hess and Dietz B.O.B and NDGT rap battle about the shape of the Earth John Tuzo Wilson Mantle Convection Slab Pull Chain demonstration Plate Boundaries Divergent Convergent Transform Lava lakes as analogs Fun Paper Friday How does cement harden? Does it turn into a continuous material or is it still a bunch of grains stuck together? Find out with this week’s Fun Paper Friday! MIT News Story on Research Ioannidou, K., Krakowiak, K. J., Bauchy, M., Hoover, C. G., Masoero, E., Yip, S., et al. (2016). Mesoscale texture of cement hydrates. Proceedings of the Nati

We’ve already talked a little bit about the Earth’s magnetic field, but where does that fall in terms of geoscience? Lots of physicists look at the magnetic field, but so do geologists. Not just our current field, but the ancient magnetic field, which is called paleomagnetism. Paleomagnetism Continental Position Video Butler’s Pmag Webpage Apparent Polar Wander True Polar Wander Magnetism in rocks - Dunlop Authigenic Mineralization Pmag Chainsaw Drill PmagPy (Python Software) Super IAPD Zijderveld, 1964 Mu Metal Magnetic Field Shielded Room SQUID Magnetometer Fun Paper Friday What can chopsticks tell us about earthquakes? Find out by reading this week’s fun paper! Tsai, S.-T., Wang, L.-M., Huang, P., Yang, Z., Chang, C.-D., & Hong, T.-M. (2016). Acoustic Emission from Breaking a Bamboo Chopstick. Physical Review Letters, 116(3), 035501–5. http://doi.org/10.1103/PhysRevLett.116.035501 Contact us: Show - www.dontpanicgeocast.com - @dontpanicgeo - show@dontpanicgeocast.com John Leeman - www.johnrleeman.com - @

With the first winter storm of 2016 over with, we figured we would jump on the bandwagon and talk about some different types of winter precipitation. Feedback Bending Spacetime in the Basement (Thanks Mark!) Cavendish Experiment Winter Precipitation Snowtron John’s Drone Experiments Pickle Juice and Cheese brine! Atmospheric Temperature Profiles Freezing Rain Freezing Fog Sleet Ice Storms Types of Frost Hail John’s Article “Highway to Hail" Graupel Inupiat Dictionary - Turn to page 104 in the pdf and you can see all the different words for snow! Many Snow Crystals! Snow Rollers (lots of photos!) NWS Warnings and Watches - Definitions Fun Paper Friday This week we use seismology to find… a burglar? Hinzen, K. G., Reamer, S. K., & Fleischer, C. (2016). Analysis of a Burglargram. Seismological Research Letters, 87(1), 193–195. http://doi.org/10.1785/0220150253 Contact us: Show - www.dontpanicgeocast.com - @dontpanicgeo - show@dontpanicgeocast.com John Leeman - www.johnrleeman.com - @geo_leeman Shannon Dulin

Last week we talked about glaciers, a basic staple of any geology education. That means it’s only fair to talk about a geophysics staple this week. We can measure gravity at different locations and use it to help figure out what’s under our feet. That and another great Fun Paper this week! It’s All About Pentiums (Weird Al) Gravity Basics All geophysical methods are based on measuring some kind of physical property difference. Gravity is sensitive to the density of the material below the measurement. “Big G" gal (unit) Density for any rock varies widely. Gravity from impact structures Measuring gravity Absolute gravimeter Relative gravimeter Zero-Length Springs Differential GPS Corrections Examples of the more common corrections Eötvös effect John’s explanation of Coriolis Force and Toilets Isostasy Bouguer Anomaly FORTRAN Talwani Example Original Talwani Paper Fun Paper Friday Alarcón, Héctor, et al. “Self-Amplification of Solid Friction in Interleaved Assemblies.” Physical Review Letters 116.1 (201

Last known survivor of the 1906 San Fran. EQ/Fire passes away Ice is a mineral National Snow and Ice Data Center Great USGS informational publication on ice ages Mendenhall Glacier Video of 1 year of Mendenhall melting Chasing Ice Firn Pressure melting point Regelation Video of Regelation Experiment Weertman 1957 (Paper on ice movement) Great Lakes Glacial erratic Ice age Drumlin Esker Moraine Kettle Lakes Subglacial channels Glacial striation Fun Paper Friday This week we learn about low frequency sound waves in the atmosphere and how we can use them to determine the winds at high altitudes and improve numerical weather prediction. EOS Article Arrowsmith, Stephen J., Omar Marcillo, and Douglas P. Drob. “A framework for estimating stratospheric wind speeds from unknown sources and application to the 2010 December 25 bolide.” Geophysical Journal International 195.1 (2013): 491–503. Contact us: Show - www.dontpanicgeocast.com - @dontpanicgeo - show@dontpanicgeoc

Last week we told you about many different map projections and talked about why they are all wrong. This week we’ll discuss a few of our favorites, why we like them, and when they fail us. We also have another Star Wars themed Fun Paper Friday! How’s your 2016 so far? (PhD Comics) Nuclear Test John’s Particle Motion Movie How To Detect A Secret Nuclear Test Picking a Projection Consider what you need For dot density plots, equal area is important Mercator projection Gnomonic projection Great circle distance Great circle Our Favorites Compare landmasses to Africa. Mercator puzzle Wikipedia lists over 60 different projections! Strangest: Hammer retroazimuthal projection or Waterman Butterfly Projection Most boring/overused: Mercator Projection or Web Mercator Pleasing whole-world: Robinson , Winkel tripel projection, or Armadillo Polar Regions: Stereographic Projection or Pierce Quincuncial Projection Fun Paper Friday Feinstein, Zachary. “It’s a Trap: Emperor Palpatine’s Poison Pill.” arXiv preprint arX

Maps are useful things, but it turns out that projecting a 3D object on a 2D map can cause a lot of unexpected problems. They even inspired an XKCD comic. This week we explore maps and map projections. We also chat about machine learning as part of #FunPaperFriday. What’s the big problem? The Earth is a sphere, actually it’s an ellipsoid, actually it’s really bumpy and messy Taking 3D information and pushing in onto a 2D medium means that you must sacrifice something, you are losing a dimension with which you can express information. Projections are a well thought out as researched problem, even in pure mathematics. You have to pick a projection that will tell you want you need to know accurately, and know that you lose some other information. There is even a West Wing clip about this A few examples of projection problems There are geographical properties that we care about: area, shape, direction, conformality, distance, scale… and you can’t get them all at once. In fact, some it’s hard to get more than a

We want to wish you happy holidays and invite you to join us while John was at AGU. This show should have been released a week ago, but John got very ill at AGU and took several days to recover. Thank you for the well wishes and sticking with us! AGU Fall Meeting 5 Tips for Surviving your First Conference John didn’t get to see the Elon Musk lecture. He did get to sit in a car from Tesla Motors though. ObsPy Orbital Mechanics - Check them out! Fun Paper Friday Can plants remember and learn? The answer may surprise you, it did us! National Geographic Article Gagliano, Monica, et al. “Experience teaches plants to learn faster and forget slower in environments where it matters.” Oecologia 175.1 (2014): 63–72. Contact us: Show - www.dontpanicgeocast.com - @dontpanicgeo - show@dontpanicgeocast.com John Leeman - www.johnrleeman.com - @geo_leeman Shannon Dulin - @ShannonDulin

The holiday season is approaching and you may be wondering what to get that geoscientist or science nerd in your life. Look no further as we discuss our recommendations on the Don’t Panic gift guide! John’s Picks Gear Pedco UltraPod II AmScope SE400-Z Microscope Shower Mate Speaker MakerBeam Lowepro Extreme Padded Sport Backpack Books Thing Explainer What If? The Annotate Build-It-Yourself Science Laboratory, checkout author interview here Seveneves The Three-Body Problem Misc Geology Bed Sheets Audible Membership Dropbox Membership Soft Earth Pottery Geology Tricorder Shannon’s Picks Gear Garmin Monterra GPS Plateau Designs Field Pouch Rite in the Rain pouch and books UV/LED handlens Books and Movies Annals of a Former World Storm Kings Hyperbole and a half Jurassic World! DamNation Misc REI Chacos! Patagonia Messenger Bag Nikon AW110 Field Notes - snowblind! Fun Paper Friday Star Wars! Need we say more? Learn about Dunes and Tatooine with this week’s fun paper! Dunes on planet Tatooine: Observat

This week we continue our discussion of posters, presentation, and talk about splashing around with our fun paper Friday! Graphing Software Igor Pro KaleidaGraph Matplotlib Bokeh Veusz Poster Tools Inkscape Adobe Illustrator Adobe InDesign Adobe Color (Formerly Kuler) John’s AGU Talk Fun Paper Friday This week we talk about urine splashing and industrial uses of carbon nanotubes. Abstract: M32.00010 : Creating a urine black hole Phys.org with Videos Vantablack Article Vantablack Video Contact us: Show - www.dontpanicgeocast.com - @dontpanicgeo - show@dontpanicgeocast.com John Leeman - www.johnrleeman.com - @geo_leeman Shannon Dulin - @ShannonDulin

This week we re-visit one of our favorite shows while everyone is outside or in their turkey food-coma here in the US. We also read some listener mail about last week's episode on earthquake magnitudes!   Time is a very complex subject that you can devote your entire life to. Today we’ll cover a few of the basics and enough to get your interest up! We’ll see that it’s difficult to know what a second is and how long relative times are, but absolute time is even messier! We also discuss dried coffee and tetris! Importance of Time (and why it’s on a geology show) It synchronizes the world and our human interactions (need minutes - hours accuracy generally) It allows us to talk about events in a common coordinate system Allows synchronization of scientific measurements and comparison of data sources. This is really important for seismometers for EQ location! Let’s us use GPS! 1 billionth of a second (nano second) error in 1 GPS satellite, GPS receiver is +/- 1 ft to satellite, which is 2–3 feet on Earth. Early

This week we talk about Bill Nye, earthquake magnitudes, and coffee. Bill Nye John got to see Bill Nye (@BillNye) talk at Penn State! News article with photos! Earthquake Magnitudes Earthquake Size (C. Ammon) Challenge is that earthquakes span a huge dynamic range. We measure ground displacements over about 9 orders of magnitude. Largest Earthquakes in the World Since 1900 Kiyoo Wadati Richter magnitude scale Book: Richter’s Scale: Measure of an Earthquake, Measure of a Man Wood Anderson Seismometer Body wave magnitude Core Shadow Zone Surface wave magnitude Seismic moment Moment magnitude Example Seismogram Resources USGS Earthquake Notification Service Harvard GCMT emails and catalog Earthquake Storms - Dvorak Introduction to Seismology - Shearer An Introduction to Seismology, Earthquakes, and Earth Structure - Stein & Wysession Fun Paper Friday Do you like bitter tasting things? A study says that it tells something about your personality. Do you buy it? Article about paper “Black Coffee Equals Black

This week Shannon is grading, John is modeling (numerically), and they both are mad about some graphs they have seen. Data Visualization We are colorblind Tableau20 Colors Rainbow Color Map (Still) Considered Harmful A Better Default Colormap (video) Perceptual Color Maps in matplotlib for Oceanography (video) Evaluation of Artery Visualization for Heart Disease Diagnosis (Borkin et al.) Make everything bigger than you think it needs to be! Resources Edward Tufte Flowing Data Visualize This (Book) Data Points (Book) The Craft of Scientific Presentations (Book) Presentation Zen (Book) Data Fluency (Book) Ask people that make things you like! Fun Paper Friday This week we talk about thundersnow and the Trump tower. How can buildings strike clouds? Warner, Tom A., Timothy J. Lang, and Walter A. Lyons. “Synoptic scale outbreak of self‐initiated upward lightning (SIUL) from tall structures during the central US blizzard of 1–2 February 2011.” Journal of Geophysical Research: Atmospheres 119.15 (2014): 9530–9