Ramon Arrowsmith
@jrarrowsmith.bsky.social
Professor of Geology SESE, ASU http://public.asu.edu/~arrows/
Ever wondered what #lidar point clouds reveal about forests? OpenForest4D’s new guide breaks down how elevation, return number, intensity, and classification describe forest structure. openforest4d.org/lidar-point-... #pointcloud #laserscanning #forestry #geospatial
Discover how #lidar reveals the size & location of individual Ponderosa Pines at Sunset Crater, AZ! Using advanced algorithms in lidR, we map tree height and crowns in stunning detail, informing forest ecology and management. openforest4d.org/tree-identif... #Forestry #RemoteSensing #RStats
We created an #OpenSource automated workflow for multi-temporal #lidar processing to map forest change at scale. Generate canopy height, cover & change products critical for monitoring #wildfire impacts and ecosystem dynamics. Code and example from #Kaibab forest #AZ at github.com/OpenForest4D...
Very happy to share this documentary that documents some of the work of our team and our collaborators in learning more about the earthquakes of Central Asia. @jrarrowsmith.bsky.social
Oxford Sparks@oxfordsparks.bsky.social · last yr.🎥 "It might never happen"...Remembering forgotten #earthquakes in Central Asia What happens when natural disasters fade from living memory? How do societies perceive #risk? @richardthomasw.bsky.social & Dr Neill Marshall share their fascinating #research @ox.ac.uk bit.ly/444sMFA 1/2
How many batteries does it take to do field work in the Jemez and the Hopi Buttes? 11+4+8+3+1. Funner than the rest of the doom and gloom
Check out the latest updates to RiverREM, a Python package that automatically generates river REM visualizations. Recent improvements include new colormap options (including custom and cmocean palettes), more efficient CPU and RAM usage, and expanded documentation. buff.ly/bwtP8Vs
2024 OpenTopography Bibliography: Every year we review the literature for publications that used OT data or resources. Since 2009, OT has enabled 1,204 peer-reviewed publications, 139 theses, 34 book sections, and 57 reports. Read more in our full blog post: opentopography.org/blog/ot-bibl...
Sacramento River, CA Topo-Bathymetric #lidar dataset recently added to OpenTopography. 174 river miles of high resolution aerial imagery, topography, bathymetry, and water surface elevations were collected to support hydrodynamic modeling and habitat prediction: opentopography.org/news/sacrame...
Explore in this interactive map of change: portal.opentopography.org/lafires Change maps and processed #lidar DEMs used in the analysis are available here: doi.org/10.5069/G95B... Original post-fire DEMs (courtesy of NV5 & UCSD): Palisades: doi.org/10.5069/G9DR... Eaton: doi.org/10.5069/G9JH...
Using #lidar to understand the impacts of the 2025 Palisades and Eaton Fires, Los Angeles, CA: We processed pre- & post- fire lidar data to illustrate the changes to the natural and built environments caused by these devastating fires. Blog for more info & images: opentopography.org/blog/using-l...
New paper! Rachel Adam did a great job leading this work. Thanks to PGE and ASU for support. Think about how we map potentially active faults. pubs.geoscienceworld.org/gsa/geospher...
A systematic approach to mapping tectonic faults and documenting supporting geomorphology | Geosphere | GeoScienceWorld
pubs.geoscienceworld.org
Very cool! Our USGS 3DEP #lidar notebook can be found on our Github here: github.com/OpenTopograp...
Joe Mason@moreorloess.bsky.social · 2y agoSun and shade across the Madison isthmus today. View NW. Lidar from USGS using Jupyter notebook from @opentopography.bsky.social. Sun position using #suntools R package; perspective view and shadows modeled with #rayshader. Needs work but I like it. Will share the script when I get around to it.
I am intrigued by these earthquakes in the northeastern Main Ethiopian Rift. I will be there next month... activetectonics.blogspot.com/2024/12/m4-m...
M4-M5 earthquakes in the Awash area of Ethiopia (late 2024)
There have been numerous M4-M5 earthquakes in the Awash area of Ethiopia over the last few months. This is within the Main Ethiopia Rift at ...
activetectonics.blogspot.com
Day three of #AGU24. If you’ve not yet said hi to the OpenTopography team please stop by booth 1108 in the exhibit hall: opentopography.org/news/opentop...
Dinner at Cosmos Club in DC. IUGG social. A pilgrimage thinking of Powell and Pewe also.
