Results 51 to 60 of about 3,062 (203)

Quality assessment of DEM derived from topographic maps for geomorphometric purposes

open access: yesOpen Geosciences, 2019
Digital elevation models (DEMs) play a significant role in geomorphological research. For geomorphologists reconstructing landform and drainage structure is frequently as important as elevation accuracy.
Szypuła Bartłomiej
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

High‐Resolution Digital Terrain Model and Land‐Surface Parameters of São Sebastião and Ilhabela, Southeastern Brazil

open access: yesGeoscience Data Journal, Volume 13, Issue 2, April 2026.
The first openly accessible 2 m‐resolution lidar‐based DTM and an extensive set of land‐surface parameters (LSPs) for the region of São Sebastião and Ilhabela, southeastern Brazil, reveal geomorphological features previously indiscernible, including past landslide deposits, drainage captures and structural lineaments.
Rebeca Durço Coelho   +3 more
wiley   +1 more source

Geodiversity as a Driver of Soil Microbial Community Diversity and Adaptation in a Mediterranean Landscape

open access: yesLand
Extreme meteorological events and anthropogenic influences determine important variations in microbial community composition. To know the extent of these variations, it is necessary to delve deeper into the geogenic factors to be considered as a baseline.
Samuel Pelacani   +4 more
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

Seamounts and related topographic highs – automated mapping in support of sustainable ocean management, Norway

open access: yesFrontiers in Earth Science
Seamounts are a prime example of an ecologically relevant marine landform. They are internationally recognized by the OSPAR commission as a threatened and/or declining habitat yet estimates of their distribution in Norwegian waters are not adequately ...
Margaret F. J. Dolan   +1 more
doaj   +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

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

High resolution geomorphological classification of benthic structure on the Western Pacific Seamount

open access: yesFrontiers in Marine Science, 2022
The benthic structure of seamounts is critical for understanding the ecological environment and for assessing the influence of resource exploitation. However, the characteristics of the benthic structure of the seamount, especially for guyot, are still ...
Miao Fan   +8 more
doaj   +1 more source

Comparison of Algorithms and Parameterisations for Infiltration into Organic-Covered Permafrost Soils [PDF]

open access: yes, 2010
Infiltration into frozen and unfrozen soils is critical in hydrology, controlling active layer soil water dynamics and influencing runoff. Few Land Surface Models (LSMs) and Hydrological Models (HMs) have been developed, adapted or tested for frozen ...
Carey, Sean K.   +5 more
core   +2 more sources

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