Results 61 to 70 of about 1,269 (149)

AI‐assisted interpretation of changes in riparian woodland from archival aerial imagery using Meta's segment anything model

Earth Surface Processes and Landforms, Volume 50, Issue 1, January 2025.
Meta's 2023 foundation AI model, Segment Anything (SAM), was used to assist the mapping of changes in the extent of riparian woodland along three gravel bed, meandering, river reaches in rural settings in the United Kingdom. Using visual prompts in interactive mode, this approach is shown to deliver substantial time savings over manual digitisation ...
Martin Dawson, Henry Dawson, Angela Gurnell, John Lewin, Mark G. Macklin   +4 more
wiley   +1 more source

Evaluating the potential of multi-view data extraction from small Unmanned Aerial Systems (UASs) for object-based classification for Wetland land covers

GIScience & Remote Sensing, 2019
Unmanned Aerial Systems (UASs) have the potential to provide multi-view data, but the approaches used to extract the multi-view data from UAS and investigation of their use in image classification are currently unavailable in publications to our best ...
Tao Liu, Amr Abd-Elrahman, Bon Dewitt, Scot Smith, Jon Morton, Victor L. Wilhelm   +5 more
doaj   +1 more source

Investigating palaeodune orientations and contemporary wind regimes in Southeast Kazakhstan using a semi‐automated mapping framework

Earth Surface Processes and Landforms, Volume 49, Issue 14, Page 4553-4569, November 2024.
We present a semi‐automated framework applying object‐based analysis of Sentinel‐2 and digital elevation data to map dunes and quantify their orientation. The approach is applied to five dune fields in the Ili‐Balkhash region in Kazakhstan. Comparing bedform orientations with the modern wind regime, we find (1) better alignment considering only strong ...
Maike Nowatzki, Kathryn E. Fitzsimmons, Hartwig Harder, Hans‐Joachim Rosner   +3 more
wiley   +1 more source

Optimal spatial resolution of Unmanned Aerial Vehicle (UAV)-acquired imagery for species classification in a heterogeneous grassland ecosystem

GIScience & Remote Sensing, 2018
Species composition is an essential biophysical attribute of vegetative ecosystems. Unmanned aerial vehicle (UAV)-acquired imagery with ultrahigh spatial resolution is a valuable data source for investigating species composition at a fine scale, which is
Bing Lu, Yuhong He
doaj   +1 more source

A hierarchical method and workflow for the semi‐automated mapping of valley bottom geomorphic units using publicly available remote sensing datasets

Earth Surface Processes and Landforms, Volume 49, Issue 11, Page 3524-3540, 15 September 2024.
We develop a hierarchical method to map geomorphic units across valley bottoms. The method accommodates user decisions regarding effort invested versus quality and accuracy. The method produces 12 preliminary, 20 refined, and four sub‐types of geomorphic units. The method can be applied to all river types.
Nuosha Zhang, Kirstie Fryirs
wiley   +1 more source

GEOBIA for post-fire identification of jack pine saplings

, 2018
Wildfire is a natural and necessary process which causes both devastation and regeneration to forested landscapes. One such event, the Duck Lake Fire, occurred in the Upper Peninsula (UP) of Michigan in the United States in 2012.
Bomber, Michael Jeffrey
core   +1 more source

Quantifying spatial complexity in submerged aquatic vegetation landscapes using remote sensing: Lessons from simulated and real landscapes

Limnology and Oceanography, Volume 69, Issue 7, Page 1465-1480, July 2024.
Abstract The spatial organization of vegetation has been shown to be a strong indicator of ecological state in multiple ecosystems. In this study, we analyze the relationships between spatial complexity metrics in submerged aquatic vegetation (SAV) landscapes, and we explore the potential of satellite remote sensing to quantify these metrics in ...
Arthur de Grandpré, Christophe Kinnard, Andrea Bertolo   +2 more
wiley   +1 more source

Combined optically stimulated luminescence and radiocarbon dating of aeolian dunes in Arctic Sweden

Permafrost and Periglacial Processes, Volume 35, Issue 2, Page 172-187, April/June 2024.
Abstract Multiple parabolic sand dune fields formed in Arctic Sweden after the last deglaciation, facilitated by an abundance of loose glaciofluvial sediment, limited vegetation cover and strong winds. Following initial stabilisation, these dunes underwent repeated reworking after fire events, as evidenced by the presence of buried soils, charcoal ...
Salome Oehler, Thomas Stevens, Thomas Kolb, Göran Possnert, Markus Fuchs   +4 more
wiley   +1 more source

Dynamic Land Cover Mapping of Urbanized Cities with Landsat 8 Multi-temporal Images: Comparative Evaluation of Classification Algorithms and Dimension Reduction Methods

ISPRS International Journal of Geo-Information, 2019
Uncontrolled and continuous urbanization is an important problem in the metropolitan cities of developing countries. Urbanization progress that occurs due to population expansion and migration results in important changes in the land cover ...
Ugur Alganci
doaj   +1 more source

Possibility of spatial estimation of soil erosion using Revised Universal Soil Loss Equation model and generalized additive model in post‐hard coal mining spoil heap

Land Degradation &Development, Volume 35, Issue 3, Page 923-935, 15 February 2024.
Abstract Revegetation and plant cover establishment on coal mining heap areas are effective methods for reducing runoff and soil erosion. They are essential components for reestablishing ecosystems in ecologically vulnerable areas. Our study area covered the Upper Silesia coal region.
Pranav Dev Singh, Anna Klamerus‐Iwan, Paweł Hawryło, Edyta Sierka, Marcin Pietrzykowski   +4 more
wiley   +1 more source