Charles Preppernau @Geolographer
Product Engineer at Esri. I study cartography, volcanoes, and the cartography of volcanoes. Opinions are my own. geolographer.xyz Redlands, CA Joined October 2014-
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Following171
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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.
Charles Preppernau retweeted
Magnífico timelapse del Halema'uma'u, donde una fisura ha cubierto de lava el suelo del cráter...
Magnífico timelapse del Halema'uma'u, donde una fisura ha cubierto de lava el suelo del cráter...
Accurate. Very, very accurate.
Nice day at Smith Rock this weekend.
Pictured: one of many reasons why @USGSVolcanoes is my favorite thing about Twitter.
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.
I love this illustrated panoramic map for teaching about lahar hazards.
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
Dear non-cartographers, please do not do this. This profession/art/career is thriving. See: #NACIS
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
Whoever made this is my new favorite person.
Charles Preppernau retweeted
Volcanoes are insanely gorgeous and amazing and scary and all the things. That is all.
Volcanoes are insanely gorgeous and amazing and scary and all the things. That is all.
Charles Preppernau retweeted
The @saflumn Jurassic Tank XES-02 experiment provides some excellent data to illustrate how stratigraphy forms as a result of constant sediment input, changing sea level, and ongoing subsidence
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