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#lidar

3 posts3 participants0 posts today
💧🌏 Greg Cocks

More [Canadian] High-Resolution Lidar [HRDEM] And Elevation Data Now Available
--
natural-resources.canada.ca/sc <-- shared technical press release
--
“... In this first article, highlights include:
• HRDEM & HRDEM Mosaic - over 709,000 km² of new LiDAR-derived elevation data added since May 2024, increasing coverage by 54%. This product now covers 244 of Canada’s 250 largest cities, and over 95% of the population.
• Northern HRDEM data - fully updated using ArcticDEM v4.1, improving quality for the entire Canadian Arctic.
• Automatically Extracted Buildings - Added 61 new projects and over 2.58 million building footprints, bringing the total to over 13.6 million.
• LiDAR Point Clouds - Expanded by over 200,000 km2, now totalling close to 364,000 km²…”
#GIS #spatial #mapping #Canada #HRDEM #mosaic #LiDAR #elevation #NationalElevationDataStrategy #pointcloud #ArcticDEM #building #footprints #geographic #coverage #progress #opendata #Canadian #arctic #remotesensing #earthobservation #NaturalResourcesCanada

Benjamin Carr, Ph.D. 👨🏻‍💻🧬

How #LiDAR measures the toll of #climate disasters
Comparing LiDAR data from before and after the January 2025 fires in #LosAngeles.The visualizations reveal the scale of devastation in ways satellite imagery can’t match. Red shows lost elevation (like when a building burns), and blue shows a gain (such as tree growth or new construction).
beautifulpublicdata.com/how-li

Beautiful Public Data · How LiDAR measures the toll of climate disastersComparing LiDAR data from before and after the January 2025 fires in Los Angeles reveals the scale of devastation in ways satellite imagery can’t match.
💧🌏 Greg Cocks

3D Coastal Mapping [New Zealand]
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linz.govt.nz/products-services <-- shared technical overview
--
data.linz.govt.nz/layer/122508 <-- shared New Zealand Coastal LiDAR 1m DEM
--
#GIS #spatial #mapping #coast #coastal #opendata #NewZealand #remotesensing #LiDAR #earthovservation #3D #3DCM #climatechange #sealevel #sealevelrise #SLR #risk #hazard #spatialdata #mitigation #topography #bathymentry #geomorphmetry #humanimpacts #seafloor #marine #ocean #policy #planning #communities #infrastructure #biodiversity #habitat #tsunami #earthquake #RingOfFire #flood #innundation #flooding #LINZ #hydrology #hydrography #maritime #safety
@Toitū Te Whenua Land Information New Zealand @LINZ

💧🌏 Greg Cocks

Floodplain Mapping - An Age-Old Practice Updated For Today's Flooding Events
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woolpert.com/news/blogs/floodp <-- shared technical blog post
--
[this post should not be considered an endorsement of this specific vendor, rather sharing an informative technical article]
#GIS #spatial #mapping #opendata #model #modeling #flood #floodplain #flooding #3DHP #NHD #remotesensing #LiDAR #risk #hazard #water #hydrology #geohazard #river #terrace #elevation #climatechange #extremeweather #photogrammetry #property #infrastructure #mitigation #engineering #event #agriculture #storm #rainfall #precipitation #regulations #design #construction #seasonal #damage #cost #economics #cropland #lowlands #data #topography #geomorphology #geomorphometry
@USGS @NOAA @nws

Quinn Comendant

Apple Maps’ “Look Around” feature is incredible – its LIDAR point cloud rendering is clearly a generation step above Google Street View (predictably: 2019 vs 2007 tech). Moving through Tokyo is like exploring on an open-world game platform.

Also cool that the Look Around API is accessible by other apps (shown is @pasi’s excellent MapTrails app). #map #appleMaps #gischat #lidar #tokyo

Levka

#archeology #AmazonRainforest #LiDAR

"Missouri archaeologists think they've found a lost city. Now they're setting out to prove it.

(. . .)

Together, Pierce and Bodine formed the Terra Incognita Research Institute. In their lab, they've identified clues to what may be hidden in the vines and canopy of the jungle.

'We've found some large manmade features like geometric designs,' Pierce said, 'evidence of a large-scale permanent settlement of a complex civilization that nobody knew was there.'

Using LiDAR, the team has identified possible roads, buildings and trails.

'LiDAR is a sensor that you attach to an airplane or a drone and it shoots laser pulses towards the surface of the earth,' explained Bodine. He says LiDAR can be used to make highly detailed maps, 'with different codes and you can remove the trees or the leaves or the buildings and leave just the bare ground and it allows you to see what is underneath the trees.'

Virtually peeling away the forest, Pierce and Bodine think they've found a lost city the Amazon. Now they have to prove it.

'Somewhere in the middle of the Amazon,' Bodine outlined the expedition, 'then up the river several hundred miles, then once we get up the river we're going to go into the jungle several more miles and try and confirm what we've seen through satellite imagery.'

The goal and dream for Pierce is 'to be the first to ever identify an entire culture that lived there.

Bodine says the mission goes beyond bragging rights: 'For the native peoples in Brazil in particular and the Amazon, because of the rubber tappers and the illegal loggers, it's a way for them to prove they have sovereignty over the land, that they were there and they own it and that they own the rights to the land.'

If proven, their discovery could also rewrite world history.

'The Amazon probably didn't exist in the form it exists today and it may have looked more like Missouri,' theorized Bodine.

Pierce and Bodine are working with limited research dollars and have started a crowd funding campaign to complete their expedition.

Click here to donate."

ksdk.com/article/news/local/mi

www.ksdk.comBefore you continue to YouTube
💧🌏 Greg Cocks

Floodplain Mapping - An Age-Old Practice Updated For Today's Flooding Events
--
woolpert.com/news/blogs/floodp <-- shared technical blog post
--
[this post should not be considered an endorsement of this specific vendor, rather sharing an informative technical article]
#GIS #spatial #mapping #opendata #model #modeling #flood #floodplain #flooding #3DHP #NHD #remotesensing #LiDAR #risk #hazard #water #hydrology #geohazard #river #terrace #elevation #climatechange #extremeweather #photogrammetry #property #infrastructure #mitigation #engineering #event #agriculture #storm #rainfall #precipitation #regulations #design #construction #seasonal #damage #cost #economics #cropland #lowlands #data #topography #geomorphology #geomorphometry
#USGS #NOAA #NWS

*
Jérôme Herbinet | FLOSS toots

💡 Amis contributeurs d'#OpenStreetMap, connaissez-vous le #LIDAR ? C'est une technologie de télédétection par laser permettant, depuis un avion 🛩️, de créer une carte 3D très précise du terrain, même sous la végétation 🌳

🚀 Grâce à cette imagerie, vous pourrez tracer ou corriger / compléter le tracé de pistes, chemins, et cours d'eau qui sont habituellement masqués par mère nature.

👨‍💻 Le LIDAR est accessible dans l'éditeur ID. Pas vérifié dans #JOSM.

#️⃣ #OpenSource #LogicielsLibres #OSM #IGN

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