@OpenTopography

Open access to high-resolution, Earth science-oriented topography data, and related tools & resources. US NSF supported. #lidar

 San Diego | Colorado | Tempe
opentopography.org
Joined May 2009
  • Tweets2.8K
  • Following580
  • Followers10.1K
504Media
We've made the move to Bluesky. Follow us there for the latest OpenTopography updates: bsky.app/profile/opentopogra…
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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/open…
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OT will be at #AGU24 next week. Visit us in booth #1108 in the exhibit hall. Our booth is staffed by the OT team. Stop by & ask questions, provide feedback, see what's new in OT, & grab an "I ❤️ #LIDAR" sticker! More info on the OT booth, talks, posters opentopography.org/news/open…
OpenTopography "I heart LIDAR" bumper sticker.

ALT OpenTopography "I heart LIDAR" bumper sticker.

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Call for @NCALM_UH seed project proposals is now open! Great opportunity for students to get free #lidar for research. New this year, faculty at MSI & 2YCs are also eligible. Data become open via OT. To date there are 254 NCALM datasets available on OT: ncalm.cive.uh.edu/seed-propo…
Map of CONUS showing locations of NCALM collected lidar data as red polygons.

ALT Map of CONUS showing locations of NCALM collected lidar data as red polygons.

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We're giving Blue Sky a try. Find us at: bsky.app/profile/opentopogra…
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#30DayMapChallenge Day 24: Only circular shapes Elevation of #Cyprus in dot matrix style. Made with #QGIS using #OpenData SRTM 3 Arc-Second via @OpenTopography DEM Downloader plugin. – at Rotterdam, The Netherlands
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OpenTopography retweeted
terence@researchremora13 Nov 2024
#30DayMapChallenge · Day Thirteen · A new tool. Visualisations of segments of the Duchesne (left) and Sevier (right) rivers, inspired and made possible by @geo_coe (who wrote a wonderful set of tutorials in QGIS) and @OpenTopography.
A visualisation of a segment of the Duchesne river

ALT A visualisation of a segment of the Duchesne river

A visualisation of a segment of the Sevier river

ALT A visualisation of a segment of the Sevier river

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Are you interested in helping to guide OpenTopography? We're seeking members for our 3 Advisory Committees to represent users and ensure that the facility’s activities are aligned with the needs & initiatives of the scientific & educational communities: opentopography.org/news/new_…
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OpenTopography retweeted
Jack Sapoch@JackSapoch4 Nov 2024
Replying to @JackSapoch @EFF @Esri
#30DayMapChallenge Day 4 - Hexagons Elevation ranges at The Pentagon shown through hexagons Made using a LiDAR derived DSM of the area via @OpenTopography and a zonal statistics calculation in QGIS
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OpenTopography is at the @SACNAS National Diversity in STEM (#2024NDiSTEM) conference in Phoenix, AZ this week. Stop by our booth in the exhibit hall (shared with @AGeSGeochron) to say hi 👋, ask questions, and learn about available resources related to #lidar and topography.
OpenTopography exhibit hall booth at the SACNAS NDiSTEM conference.

ALT OpenTopography exhibit hall booth at the SACNAS NDiSTEM conference.

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The first ever GDAL Users Survey is now open for feedback at docs.google.com/forms/d/e/1F… The survey is an attempt to provide structured guidance for the maintenance program to focus its efforts in the coming year. Please contribute and help us circulate it!

2024 GDAL User Survey

In 2024, for the first time ever, the GDAL project is soliciting feedback to help focus GDAL Sponsorship Program activities. The survey will provide guidance about priorities for the program's...

docs.google.com
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#omdtz Wami/Ruvu Basin Map, River watershed delineation generated from SRTM 30m from @OpenTopography using @qgis #ClimateAction #WaterConservation #GIS #Mapping #Tanzania #GIS #QGIS #DataDriven #gischat @maji_mowi – at Dar es Salaam, Tanzania
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Recent post: May–Aug 2024 publications using OpenTopography: 1. Fault mapping with drone lidar 2. Snowmelt, topography, plants, and pollinators 3. Remote sensing helps determine hurricane impact on vegetation and wildlife Read more about these new pubs: opentopography.org/blog/high…
Comparison between airborne laser scanning (ALS), UAV laser scanning (ULS), and Structure from Motion (SfM) surveys from one of the study areas.

ALT Comparison between airborne laser scanning (ALS), UAV laser scanning (ULS), and Structure from Motion (SfM) surveys from one of the study areas.

Hillshade colored by elevation of Niwot Ridge overlain on Google Earth imagery.

ALT Hillshade colored by elevation of Niwot Ridge overlain on Google Earth imagery.

aerial image comparison of No Name Key, Florida before and after hurricane Irma.

ALT aerial image comparison of No Name Key, Florida before and after hurricane Irma.

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We will be conducting scheduled maintenance on Tuesday Oct 1st from 2pm PDT to 6pm PDT. During this period the OpenTopography Portal and APIs may be temporarily unavailable. Thank you for your understanding.
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OpenTopography retweeted
LINZ Data Service@LINZLDS25 Sep 2024
Featured Image: blending a DSM with aerial imagery, showing Baker Hut in Arthur’s Pass National Park. It also features Mt Murchison, White Glacier, and Marmaduke Dixon Glacier. Explore the latest #LiDAR updates at data.linz.govt.nz/layer/1111… & doi.org/10.5069/G9Q23XF8 @OpenTopography
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Great news! Congratulations @NCALM_UH.
National Center for Airborne Laser Mapping@NCALM_UH9 Sep 2024
NCALM is pleased to announce that we have received @NSF funding for our 6th project cycle. Stay tuned as we will announce a couple of exciting new programs in the coming weeks!
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OpenTopography retweeted
LINZ Data Service@LINZLDS8 Sep 2024
🎉Exciting updates to the Canterbury 2020-2023 dataset: @OpenTopography doi.org/10.5069/G9Q23XF8 DEM on LDS data.linz.govt.nz/layer/1111…. Here's the DSM showing Ohau Ski Field and the road up to it, east of Lake Ohau in the Canterbury Region. #Canterbury #Mapping #LiDAR #opendata 🗺️
Ohau ski field

ALT Ohau ski field

Access road to Ohau

ALT Access road to Ohau

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The Governor of CA declared a state of emergency on Sept 3rd due to quickening landslides in Rancho Palos Verdes near LA. Topographic differencing with @NOAADigCoast #lidar in OT shows Earth’s surface change from 2010-2014. The red and blue areas highlight persistent landslides.
OpenTopography topographic differencing with NOAA lidar shows how the Earth’s surface changed from 2010-2014. The left image shows a lidar hillshade. In the right image, the difference between the 2010 and 2014 datasets is shown. Red indicates where the land surface moved down or was eroded. Blue shows where the land surface moved up or where material was deposited. Topographic analysis of these older lidar datasets indicates that landslide activity has been persistent in this area for decades.

ALT OpenTopography topographic differencing with NOAA lidar shows how the Earth’s surface changed from 2010-2014. The left image shows a lidar hillshade. In the right image, the difference between the 2010 and 2014 datasets is shown. Red indicates where the land surface moved down or was eroded. Blue shows where the land surface moved up or where material was deposited. Topographic analysis of these older lidar datasets indicates that landslide activity has been persistent in this area for decades.

The New York Times
@nytimes3 Sep 2024
Underneath the multimillion-dollar homes in a scenic town 30 miles south of Los Angeles is a large complex of landslides. Every day, the ground moves. And for some residents, it's been catastrophic. nyti.ms/4cThZR0

In a Scenic California Town, Worsening Landslides Force Power Shutoffs (Published 2024)

The movement of the ground in Rancho Palos Verdes is threatening homes. But as the city searches for solutions, many residents are committed to staying.

nytimes.com
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Learn more about topographic differencing, OpenTopography's tools for computing change, as well as publications, tutorials, and links to open source code here: opentopography.org/learn/dif… #lidar
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Happy to announce that @NSF support for OpenTopography has been renewed for another four years! This is the 5th generation of funding for OT. Support comes from NSF EAR's Geoinformatics program & the National Discovery Cloud for Climate initiative. More: opentopography.org/news/open…
The 2017 Mud Creek landslide occurred along the Big Sur coastline of central California, approximately 140 kilometers south of San Francisco. The red areas indicate zones of erosion or material loss, while blue areas highlight where the displaced material was deposited.

ALT The 2017 Mud Creek landslide occurred along the Big Sur coastline of central California, approximately 140 kilometers south of San Francisco. The red areas indicate zones of erosion or material loss, while blue areas highlight where the displaced material was deposited.

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