Jeff Moore
@utahgeohaz.bsky.social
Professor, Geomorphology, Seismology, Rock Mechanics. Translator of seismic soundscapes.
This is what a vibrating saguaro sounds like (sped up ambient vibration with coeval ambient audio): geohazards.earth.utah.edu/images/Sagua...
October 27, 2025 at 3:23 PM
This is what a vibrating saguaro sounds like (sped up ambient vibration with coeval ambient audio): geohazards.earth.utah.edu/images/Sagua...
Resonance frequencies are in the range of 0.5-4 Hz, with damping ratios of 1-2%. Results describe material properties needed for hydrodynamic or other stability analyses, and come from purely nondestructive ambient seismic data.
October 22, 2025 at 2:57 PM
Resonance frequencies are in the range of 0.5-4 Hz, with damping ratios of 1-2%. Results describe material properties needed for hydrodynamic or other stability analyses, and come from purely nondestructive ambient seismic data.
Saguaros vibrate much like a cantilever, but with some interesting differences. Stiffness varies between cacti (taller stems are stiffer), and for a single stem (taller stems have softer tops).
October 22, 2025 at 2:56 PM
Saguaros vibrate much like a cantilever, but with some interesting differences. Stiffness varies between cacti (taller stems are stiffer), and for a single stem (taller stems have softer tops).
This was an interesting study for me, something new:
bsapubs.onlinelibrary.wiley.com/doi/10.1002/...
bsapubs.onlinelibrary.wiley.com/doi/10.1002/...
October 22, 2025 at 2:55 PM
This was an interesting study for me, something new:
bsapubs.onlinelibrary.wiley.com/doi/10.1002/...
bsapubs.onlinelibrary.wiley.com/doi/10.1002/...
Hellroaring Bridge, Utah, field work with the team (and dog).
October 16, 2025 at 5:35 PM
Hellroaring Bridge, Utah, field work with the team (and dog).
Nice to be out measuring vibration of arches again
October 8, 2025 at 6:38 PM
Nice to be out measuring vibration of arches again
Rainbow Bridge in Bridge Canyon, Utah, topographic shading
September 22, 2025 at 7:37 PM
Rainbow Bridge in Bridge Canyon, Utah, topographic shading
Surveying movement of big landslides (DSGSD) in Colorado
July 29, 2025 at 5:58 PM
Surveying movement of big landslides (DSGSD) in Colorado
Takeoff: field survey, AK 2023
July 17, 2025 at 4:27 PM
Takeoff: field survey, AK 2023
Still over here measuring vibration of stuff
May 23, 2025 at 7:49 PM
Still over here measuring vibration of stuff
Mancos shale over here doing weird stuff
April 14, 2025 at 2:59 PM
Mancos shale over here doing weird stuff
I like it, and have another for you in the same spirit: Harvard Glacier in PWS AK, an oddball advancing glacier mowing down the forest on the fjord walls (larger background glacier obv!)
March 21, 2025 at 3:35 PM
I like it, and have another for you in the same spirit: Harvard Glacier in PWS AK, an oddball advancing glacier mowing down the forest on the fjord walls (larger background glacier obv!)
Whoa, fantastic super-elevation indiactors! When did it happen, known?
March 11, 2025 at 12:50 AM
Whoa, fantastic super-elevation indiactors! When did it happen, known?
Seismometer installed, 3D models generated... Hovenweep Castle and Square Tower, UT sketchfab.com/3d-models/ho...
February 28, 2025 at 3:54 PM
Seismometer installed, 3D models generated... Hovenweep Castle and Square Tower, UT sketchfab.com/3d-models/ho...
The old places are still: our new vibration monitoring subject, Hovenweep Castle, UT
February 7, 2025 at 8:02 PM
The old places are still: our new vibration monitoring subject, Hovenweep Castle, UT
Dog in the canyon, Utah
January 29, 2025 at 5:04 PM
Dog in the canyon, Utah
Arsenic Arch, Utah, puppy for scale
January 27, 2025 at 4:58 PM
Arsenic Arch, Utah, puppy for scale
A rare view of Mesa arch without the crowds. We've measured vibration at this arch more times than any other.
January 20, 2025 at 2:38 PM
A rare view of Mesa arch without the crowds. We've measured vibration at this arch more times than any other.
Hoping this beautiful Ancestral Puebloan building site at Hovenweep National Monument will be our next vibration monitoring project.
January 15, 2025 at 5:49 PM
Hoping this beautiful Ancestral Puebloan building site at Hovenweep National Monument will be our next vibration monitoring project.
Deploying nodal seismometers on a lava tube roof in central Utah for vibration-based structural characterization, results here: link.springer.com/article/10.1...
January 9, 2025 at 3:58 PM
Deploying nodal seismometers on a lava tube roof in central Utah for vibration-based structural characterization, results here: link.springer.com/article/10.1...
An audio piece I made for a video by Fazal Sheikh showing methane leaks at oil wells in UT and AZ. I recorded ground vibration at several pumpjack sites then sped these up and combined in a 10 min loop. Rather proud of how it turned out (pumpjacks): geohazards.earth.utah.edu/exposure/
January 8, 2025 at 5:43 PM
An audio piece I made for a video by Fazal Sheikh showing methane leaks at oil wells in UT and AZ. I recorded ground vibration at several pumpjack sites then sped these up and combined in a 10 min loop. Rather proud of how it turned out (pumpjacks): geohazards.earth.utah.edu/exposure/
Took this photo as I walked away from this field site for the last time, it just happened to be at sunset, fitting. Fun to see it on the cover of @weareseismica.bsky.social Seismica, V3N2:
seismica.library.mcgill.ca/issue/view/118
seismica.library.mcgill.ca/issue/view/118
January 8, 2025 at 4:02 PM
Took this photo as I walked away from this field site for the last time, it just happened to be at sunset, fitting. Fun to see it on the cover of @weareseismica.bsky.social Seismica, V3N2:
seismica.library.mcgill.ca/issue/view/118
seismica.library.mcgill.ca/issue/view/118
Utah sandstone out here doing weird stuff
December 18, 2024 at 8:38 PM
Utah sandstone out here doing weird stuff
PhD student Molly McCreary will be presenting our work on long-term seismic preparation of deep-seated landslides in Prince William Sound, AK tomorrow at #AGU24: agu.confex.com/agu/agu24/me...
December 12, 2024 at 6:44 PM
PhD student Molly McCreary will be presenting our work on long-term seismic preparation of deep-seated landslides in Prince William Sound, AK tomorrow at #AGU24: agu.confex.com/agu/agu24/me...
Harriman Fiord, Prince William Sound, AK, field work at Serpentine Glacier summer 2023.
December 11, 2024 at 8:19 PM
Harriman Fiord, Prince William Sound, AK, field work at Serpentine Glacier summer 2023.