John Leeman
Co-Host of Don't Panic Geocast
John received a B.S. is geophysics and B.S. in meteorology from the University of Oklahoma, then proceeded onto to a PhD in geoscience at Penn State in which he studied slow earthquakes as an experimental rock mechanics researcher. John has worked on gas hydrates experiments at Oak Ridge National Lab as well as worked on telemetry software for NASA JSC. Currently he operates Leeman Geophysical located in Siloam Springs, Arkansas. The company builds custom laboratory equipment as well as educational materials. In his off time John enjoys hiking, brewing beer, restoring antique engines, and flying airplanes.
John Leeman has hosted 134 Episodes.
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Episode 303 - "But do you need it?"
September 24th, 2021 | 56 mins 54 secs
We finish up talking about getting data from the field and protecting your expensive instruments from the harsh outdoors!
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Episode 302 - "Geophysics is Batteries"
September 17th, 2021 | 50 mins 12 secs
Taking measurements in the field is hard - and this week we talk about a few ways power can fail in the field.
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Episode 301 - "Lodestone"
September 10th, 2021 | 50 mins 45 secs
This week John and Shannon tackle the history of magnetism and how whale songs can be used as seismic sources.
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Episode 300 - "Rock can also act as a fluid"
September 3rd, 2021 | 1 hr 58 secs
It's episode 300 and we're here to celebrate with you!
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Episode 299 - "Counterfeit Consciousness"
August 20th, 2021 | 1 hr 18 mins
This week we summarize what happened at the workshop and what happens when authors use AI to plagiarize papers.
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Episode 298 - "Little Nerd Arms"
August 13th, 2021 | 58 mins 56 secs
This week we talk about the wet bulb temperature and what it means for you this summer!
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Episode 297 - "Acid Gel" Shell Formation
July 23rd, 2021 | 34 mins 2 secs
Shannon is back from the beach and wondering how shells form, so we dig into some biological literature to learn how living animals form rock.
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Episode 296 - "Explosive Erosion"
July 9th, 2021 | 44 mins 17 secs
Does the earth change rapidly or slowly? We discuss the competing philosophies and the evolution of.... well, the end of the road for your food!
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Episode 295 - "Touch the rocks"
July 2nd, 2021 | 1 hr 12 mins
Shannon and John talk about what digital skills students have and what they need as well as what happens to a block of wood when you squeeze it.
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Episode 294 - "enormous catastrophe"
June 18th, 2021 | 52 mins 6 secs
How bad was that earthquake? This week we look at the confusing world of earthquake intensity scales and the future of flat pack pasta.
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Episode 293 - "Hot Hot Field Camp" Spontaneous Potential
June 11th, 2021 | 36 mins 46 secs
This week we talk spontaneously about spontaneous potential and what it can do for geologists.
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Episode 292 - "Magic Math Stick"
May 28th, 2021 | 1 hr 6 mins
This week we go off the rails and wander from field camp to working habits to Jake Staffs!
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Episode 291 - "Haven't you seen Dante's Peak?"
May 21st, 2021 | 53 mins 15 secs
We discuss the 41st anniversary of the Mt. St. Helen's eruption and how your BS-ability is tied to intelligence.
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Episode 290 - "COAL!"
May 14th, 2021 | 50 mins 57 secs
What makes coal and why do we use it? Can seismometers be used to spy on power plants? Find out in this week's show!
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Episode 289 - "Soil Teapot"
May 1st, 2021 | 38 mins 49 secs
This week we talk about geysers and how they work. Also could bat guano be the solution to fuel cell efficiency?
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Episode 288 - "95% Chance of Chert" Mineral Identification
April 16th, 2021 | 50 mins 33 secs
Inspired by a tweet, John and Shannon talk about how to identify that mystery mineral in your hand and why some of the most obvious features may not be the most accurate.