Renewables Grid Initiative’s Post

Have a look how we combine area-based forest inventories with individual tree detection!

Salomon et al. present the first use of drone lidar in tectonic geomorphology, surveying active faults in Western Canada; and offering a practical guide for others interested in this technology. Read more: https://lnkd.in/e5Ew23m5 Lidar is a powerful remote sensing technique that can be used to produce high-resolution topographic maps. Notably, it can penetrate through dense vegetation, revealing subtle landforms on the ground surface that would otherwise be hidden by forests. Traditionally, lidar surveying is conducted from an airplane; Salomon et al. describe one of the first applications of a drone-based lidar system used to study landforms generated by active faults and showcase its capabilities using surveys of a variety of faulted landscapes with different forest cover types across western Canada. The drone offers a cost-effective way of obtaining otherwise expensive airborne lidar data, and compares favorably against established methods of topographic mapping, allowing landscapes to be surveyed in finer detail than was previously possible. #LIDAR #drone #Canada #remotesensing #Seismology #EarthquakeScience #peerreviewed #DiamondOpenAccess #Earthquake #OpenAccess #OpenScience

Could the next-generation satellite photogrammetric DEMs become an alternative to radar-based DEMs, such as MERIT, or even Fathom’s own FABDEM? New research led by Yinxue Li and co-authored by Fathomers Professor Paul Bates CBE FRS and Jeffrey Neal aims to find out, by testing, for the first time, ways of generating bare-earth data from ArcticDEM. Read about the research, published in the European Geosciences Union (EGU)’s Natural Hazards and Earth Systems (NHESS), here: https://lnkd.in/dg8rhmf6 #DEM #MERITDEM #FABDEM #DigitalElevationModel #GIS #DTM

💡📈 World first! A new coastal elevation model has an accuracy within 1 metre, significantly improving vertical accuracy. To be able to accurately model future extreme water levels resulting from sea level rise, subsidence, and the worsening of storm surges, you need elevation data with a high accuracy (within 1 metre) for coastal areas. Elevation models are used as input for numerical models, but our researchers noticed that current, freely available elevation models are not accurate enough.   That’s why they decided to create a new elevation model, making use of the latest remote sensing data. Scientists at Deltares have developed a cutting-edge global coastal Digital Terrain Model (DTM) at 1 arc-second (~30 m) resolution. The newly developed DeltaDTM is the first global coastal elevation model that has an accuracy within 1 metre, marking an important step in the usability of global elevation models to assess sea level rise for instance.   Marieke Eleveld, senior remote sensing expert at Deltares: “We anticipate that this global coastal lowland relief can serve as a valuable base in many other further geospatial analyses.” Want to read more about the model? Check 👉 https://rebrand.ly/95izt4z. #EnablingDeltaLife #Coastal #Elevation #Modelling

Hyper Resolution DEM refers to a type of elevation dataset that provides extremely high levels of detail, often at sub-meter resolutions. DEMs represent the elevation of the Earth's surface as a grid of regularly spaced points, each point corresponding to a specific elevation value. Hyper-resolution DEMs offer significantly greater detail compared to standard DEMs, allowing for more precise analysis and visualization of terrain features such as hills, valleys, and other topographical characteristics. These datasets are particularly useful in various fields such as environmental modeling, urban planning, natural resource management, and disaster management, where accurate representation of terrain features is essential for decision-making processes. Hyper-resolution DEMs are typically generated using advanced remote sensing techniques such as LiDAR (Light Detection and Ranging) or photogrammetry, which capture detailed elevation information with high spatial accuracy. sources of DEM: https://lnkd.in/d-NtQfzw #dem #radar #radartechnology #remotesensing #gis #gisdeveloper #dataanalysis #dataanalyst #database #geography #geosciences #geospatialdata #geogis #photogrammetry #remotesensing #earthobservation #lidartechnology #datavisualization #mapping #landuseplanning

An article from 2019 in National Geographic showing LiDAR data from a stretch of the Mississippi River. There is so much detail to see. If you work with LiDAR data or other geophysical data where detail, patterns, shape and form are important for seeing the geology in the data, use an accurate, scientific colourmap. Don’t use a rainbow. The colourmap used here looks like inferno. Images in the article are by Daniel Coe. #usescientificcolourmaps #lidar #changethedefault #useviridis #usebatlow #usecmocean #appliedgeosciences #oceanography #hydrology #geology #geophysics #drones #gpr #seismic #hydrogeology #environmentalgeosciences #sciencecommunication #gravity #magnetics #geotechnical https://lnkd.in/ensFenvb

World first! A new coastal elevation model has an accuracy within 1 metre, significantly improving vertical accuracy. This means a lot for future decision making in coastal areas.

Interesting project and use case for laserscanning .. in Bavaria's "Canada"

A collaborative project involving researchers from Vancouver Island University, the Hakai Institute and UNBC is working to understand the role seasonal snow cover and glaciers play in the hydrology of key watersheds along B.C.’s Central and Southern Coast. Using a plane equipped with LiDAR, a remote sensing method, along with traditional snow-measuring methods, the researchers have been able to advance the ability to estimate the snow water equivalent in a watershed and create snowpack storage numbers. “We’ve had some fundamental questions about how important seasonal snow is in the total water budget. How important are important are glaciers in terms of runoff or headwater streams? And how these natural resources, these frozen reservoirs, are changing through time and can we come up with better ways to estimate the total volume or what is often referred to as the total mass of water contained within the seasonal snow and glaciers themselves,” says UNBC Geographer Professor Dr. Brian Menounos, the lead researcher on the project. Read full story: https://lnkd.in/gfMyCp96 (Photo credit: Dr. Bill Floyd) #ThisIsUNBC

🌊 Bathymetric Surveys: The Underwater Topography Essential 🌊 Ever wondered how we map and measure underwater terrains? That's where bathymetric surveys come into play! 🛥️🌐 Bathymetric surveys are crucial for exploring and understanding our oceans, rivers, lakes, and reservoirs. By using advanced technology like echo sounders, sonar, and LiDAR, we can create detailed maps of the underwater world. 🗺️🔍 🌟 Why Are Bathymetric Surveys Important? Marine Navigation 🚢: Ensuring safe routes for vessels by creating accurate nautical charts. Construction Planning 🏗️: Assisting in the development of underwater infrastructure like bridges and pipelines. Environmental Monitoring 🌱: Helping scientists’ study marine habitats, sediment transport, and coastal erosion. Whether it’s for navigation safety, environmental conservation, or infrastructure development, bathymetric surveys are indispensable for unlocking the secrets beneath the water's surface! 🌊🔑 Curious to learn more about bathymetric surveys or their applications? Let’s connect and explore! 🌐🤝 #Bathymetry #MarineScience #Surveying #UnderwaterMapping #BathymetricSurveys #MarineEngineering #EnvironmentalMonitoring