Results 71 to 80 of about 968 (174)

Flood Inundation Modeling Using the Surface Water Ocean Topography Mission

Water Resources Research, Volume 62, Issue 7, July 2026.
Abstract Flood risk mapping requires detailed river bathymetry, yet these data are unavailable for most rivers. We propose a new algorithm to estimate river bathymetry from multitemporal observations of water height by the Surface Water and Ocean Topography (SWOT) mission.
Jeffrey C. Neal, Stephen J. Chuter, Leanne Archer, Laurence P. Hawker, Paul D. Bates, James Savage, Hamish Wilkinson, Jonathan Rougier   +7 more
wiley   +1 more source

P-Band PolInSAR Sub-Canopy Terrain Retrieval in Tropical Forests Using Forest Height-to-Unpenetrated Depth Mapping

Remote Sensing
For tropical forests characterized by tall and densely packed trees, even long-wavelength SAR signals may fail to achieve full penetration, posing a significant challenge for retrieving sub-canopy terrain using polarimetric interferometric SAR (InSAR ...
Chuanjun Wu, Jiali Hou, Peng Shen, Sai Wang, Gang Chen, Lu Zhang   +5 more
doaj   +1 more source

Framework for 3D Point Cloud Modelling Aimed at Road Sight Distance Estimations

Remote Sensing, 2019
Existing roads require periodic evaluation in order to ensure safe transportation. Estimations of the available sight distance (ASD) are fundamental to make sure motorists have sufficient visibility to perform basic driving tasks.
Keila González-Gómez, Luis Iglesias, Roberto Rodríguez-Solano, María Castro   +3 more
doaj   +1 more source

Analysis of the factors affecting LiDAR DTM accuracy

, 2011
This research has been supported by Vice-Rectorate for Research of Universidad Politecnica de Valencia (Grant PAID-06-08-3297).
Estornell Cremades, Javier, Ruiz Fernández, Luis Ángel, Velázquez Martí, Borja, Hermosilla, T.   +3 more
openaire   +1 more source

Improving the Accuracy of Digital Terrain Models Using Drone-Based LiDAR for the Morpho-Structural Analysis of Active Calderas: The Case of Ischia Island, Italy

Remote Sensing
Over the past two decades, the airborne Light Detection and Ranging (LiDAR) system has become a useful tool for acquiring high-resolution topographic data, especially in active tectonics studies. Analyzing Digital Terrain Models (DTMs) from LiDAR exposes
Argelia Silva-Fragoso, Gianluca Norini, Rosa Nappi, Gianluca Groppelli, Alessandro Maria Michetti   +4 more
doaj   +1 more source

Engineering geological mapping using airborne LiDAR datasets – an example from the Vinodol Valley, Croatia

Journal of Maps, 2020
This paper presents the potential of airborne LiDAR digital terrain model (DTM) for engineering geological mapping in geologically complex and forested area.
Petra Jagodnik, Sanja Bernat Gazibara, Željko Arbanas, Snježana Mihalić Arbanas   +3 more
doaj   +1 more source

Sub-hectare resolution forest biomass mapping from Copernicus DEM with low-dimensional models

Science of Remote Sensing
Accurate, sub-hectare resolution mapping of above-ground biomass density (AGBD) of the global forests is needed for many applications, including carbon accounting, forest resource management, and biodiversity research. Surveys based on airborne lidar and
Maciej J. Soja, Maurizio Santoro, Francesco Banda, Stefano Tebaldini, Maciej Lisiewicz, Krzysztof Stereńczak, Shaun Quegan, Sander Janssen, Johannes Reiche   +8 more
doaj   +1 more source

High-precision local gravity survey along planned motorway tunnel in the Slovak Karst

Contributions to Geophysics and Geodesy, 2019
Results from a detailed gravity survey realized along the planned highway tunnel in the karstic area of Slovak Karst in the eastern Slovakia are presented.
Pavol ZAHOREC, Juraj PAPČO, Peter VAJDA, Stanislav SZABÓ   +3 more
doaj   +1 more source

Designing a method to estimate the quality of airborne LiDAR-derived DTM

, 2023
Airborne lidar scanning allows the production of accurate and high-resolution digital terrain models (DTM). This thesis is part of a project where the DTM is used to assess the water height in flood and estimate the risk it reaches the lower openings in buildings.
openaire   +1 more source

Using Lidar DTM for Hydrology, Lightning Talk (7 min)

, 2020
The presentation will highlight how a high-resolution digital terrain model (DTM) can significantly improve the delineation of watercourse lines, watershed boundaries, and help improve the accuracy of flood plain mapping. The work is primarily done using ArcGIS and the ArcHydro tools, with flood plain mapping using HEC-RAS and the Arc HEC-GeoRAS plugin.
openaire   +1 more source