Results 61 to 70 of about 1,178 (191)

A procedure for delineating a search region in the UAV-based SAR activities

open access: yesGeomatics, Natural Hazards & Risk, 2017
We propose a simple geometrical approach for delineating a region above which an Unmanned Aerial Vehicle (UAV) should fly to support the Search and Rescue (SAR) activities.
Mirosława Jurecka, Tomasz Niedzielski
doaj   +1 more source

Surface network extraction from high resolution digital terrain models

open access: yesJournal of Spatial Information Science, 2021
A surface network is a topological data structure formed by a set of thalwegs and ridges on a digital terrain model. Its computation relies on the detection of saddles on the terrain.
Eric Guilbert
doaj   +1 more source

Asymmetric Changes in the Cooling Capacity of China's Lakes

open access: yesGeophysical Research Letters, Volume 53, Issue 5, 16 March 2026.
Abstract Lakes significantly influence local climate, yet a systematic assessment of their cooling effect across diverse regions remains limited. This study develops a multi‐metric (spatial extent, magnitude, and efficiency) framework to evaluate the spatiotemporal patterns of Lake Cooling Capacity (LCC) for 265 major Chinese lakes from 1980 to 2022 ...
Zikang Xing   +5 more
wiley   +1 more source

The true 3-D surface reconstruction using a multi-UAV cooperation method

open access: yes, 2023
Geomorphometry research largely relies on 3-dimentional land surface models, especially for natural landforms with steep slopes and large complex artificial structures. The traditional Digital Elevation Model (DEM) encounters difficulties in representing
Gong, Jianya   +4 more
core   +1 more source

Assessing Relative Gully Morphometric Change After Extreme Rainfall Events: A UAV‐Based GIS Framework Applied to the 2024 DANA in Southern Spain

open access: yesTransactions in GIS, Volume 30, Issue 1, February 2026.
ABSTRACT Climate change is intensifying the frequency and impact of extreme weather events, particularly in vulnerable Mediterranean environments. This study investigates relative morphometric changes within a gully system in the Guadalmedina River basin (Málaga, southern Spain) triggered by the 2024 DANA (Depresión Aislada en Niveles Altos), a high ...
Jesús Rodrigo‐Comino   +4 more
wiley   +1 more source

Detection of former landfills in gravel plain using geomorphometric analysis and High-Resolution LiDAR DTM

open access: yesActa Geographica Slovenica, 2014
The article represents the application of geomorphologic approach to discover the potential areas of buried waste in agricultural landscape of Ljubljana gravel plain.
Mateja Breg Valjavec
doaj   +1 more source

Relief of the Orawa-Nowy Targ Basin, Western Carpathians

open access: yesGeographia Polonica
This paper relies on the literature to outline the main properties of the relief of the intramontane Orawa-Nowy Targ Basin which is dominated by three fluvioglacial fans.
Adam Łajczak   +2 more
doaj   +1 more source

Leading Progress in Digital Terrain Analysis and Modeling

open access: yesISPRS International Journal of Geo-Information, 2019
Digital Terrain analysis (DTA) and modeling has been a flourishing interdisciplinary field for decades, with applications in hydrology, geomorphology, soil science, engineering projects and computer sciences.
Giulia Sofia   +3 more
doaj   +1 more source

Complementary geophysical, geomorphometric and pedological approaches for characterizing shallow and deep subsurface materials in a colluvial‐alluvial plain in Atlantic rainforest

open access: yesEarth Surface Processes and Landforms, Volume 50, Issue 15, December 2025.
This study combines GPR, 2D ERT and UAV‐derived terrain models to characterize sediment variability in a colluvial‐alluvial plain. GPR identified sandy lenses and clay‐rich layers, while ERT revealed deeper conductive and resistive zones, including a gneissic basement.
Nádia Mariane Mucha   +5 more
wiley   +1 more source

Unified Geomorphological Analysis Workflows with Benthic Terrain Modeler

open access: yesGeosciences, 2018
High resolution remotely sensed bathymetric data is rapidly increasing in volume, but analyzing this data requires a mastery of a complex toolchain of disparate software, including computing derived measurements of the environment.
Shaun Walbridge   +3 more
doaj   +1 more source

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