Product Engineer at Esri. I study cartography, volcanoes, and the cartography of volcanoes. Opinions are my own.
Redlands, CA
Joined October 2014
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Charles Preppernau retweeted
Eloïse Bretagne has finished her PhD thesis! This 'frontispiece' is a 3D rendering from one of her simulation results showing how melt moves through a crystal framework in a random packed magma mush. I think it's very beautiful.
Charles Preppernau retweeted
King tides (the highest winter tides) are coming to the Oregon coast Jan. 20-22. Exercise extreme caution because, if we’ve said it once we’ve said it a million times: Giant waves have zero chill.
ALT A giant wave exploding into a rock cliff face on a gray, cloudy day. A little red arrow points to the wave from black text that reads "Massive exploding wave that doesn't care about anything (including your wellbeing)."
Charles Preppernau retweeted
Ecco il video ravvicinato del flusso piroclastico principale che nel pomeriggio si è sviluppato sulla Sciara del Fuoco dello #Stromboli provocando la formazione di uno #tsunami alto 1,5 metri. Per fortuna al momento non si hanno notizie di danni.
Pictured: one of many reasons why @USGSVolcanoes is my favorite thing about Twitter.
It has come to my attention that I haven't spent enough time at Cove Palisades. Worked on that today.
Just moved back to Oregon and don't yet have access to my usual carto tools, so this is my only submission for this year's #30DayMapChallenge.
I love this illustrated panoramic map for teaching about lahar hazards.
#tbt We commemorate Colombia’s Nevado del Ruiz eruption and lahar on November 13, 1985. This science note discusses the lessons learned and the work done by the Colombian Geological survey to promote volcanic risk management for new generations in Colombia eos.org/articles/how-the-arm…
Charles Preppernau retweeted
- Meanwhile in Kamchatka -
Alone in the light
above the clouds
facing the sky
far from the crowd
standing high
you should be proud
survived my fight
say it loud
@CopernicusEU #Sentinel2 🛰️ January 2022
HD -> youtu.be/p_BpHUq-ZBg 🧐
Charles Preppernau retweeted
A spectacular example of Kelvin-Helmholtz wave clouds over Mt Montara, south of Pacifica, California. These are formed, often over a barrier (i.e., hill/mountain), when there are different wind speeds with altitude. (Image by Peter Harrison, shared with permission)
Charles Preppernau retweeted
Subduction is understood to be one of the most significant processes in plate tectonics, as the main driver of plate motion and one of the main causes of volcanism.
This graphic explores one significant aspect of subduction - flat slab subduction - and its effect on volcanism.
Charles Preppernau retweeted
As a geology person, I regularly have to grimace at "That volcano is past due," and "that fault is past due for the big one." Somehow though, no one ever says "This town is past due for a tornado."
Charles Preppernau retweeted
Volcanoes are insanely gorgeous and amazing and scary and all the things.
That is all.
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