Results 61 to 70 of about 676,244 (157)

Quantifying Deep Ocean Methane Along the Central Chilean Margin

open access: yesGeophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract Cold seeps are dynamic seafloor environments that provide conduits for methane (CH4) to be transferred from marine sediments to the global ocean and, in shallow settings, the atmosphere. These seeps are ubiquitous along continental margins yet their spatial extent and impact on the marine carbon cycle are poorly constrained.
Scott T. Wieman   +10 more
wiley   +1 more source

Computer Vision–Based Orthorectification and Georeferencing of Aerial Image Sets [PDF]

open access: yes, 2016
Generating a georeferenced mosaic map from unmanned aerial vehicle (UAV)imagery is a challenging task. Direct and indirect georeferencing methods may fail to generate an accurate mosaic map due to the erroneous exterior orientation parameters stored in ...
Faraji, Mohammadreza   +2 more
core   +1 more source

Surface grain-size mapping of braided channels from SfM photogrammetry [PDF]

open access: yesEarth Surface Dynamics
Braided channels are known as fluvial systems with a high heterogeneity of physical conditions, resulting from particularly active interacting processes of coarse sediment sorting and transport.
L. Ribet   +4 more
doaj   +1 more source

Improving island occupancy predictions using ecologically informed metrics of area and isolation

open access: yesEcology, Volume 107, Issue 10, October 2026.
Abstract Understanding how species occupy islands and habitat patches remains a central question in biogeography, landscape ecology, conservation, and management, especially as natural and anthropogenic processes reconfigure habitat size and connectivity over time.
Andrew G. Gaier   +2 more
wiley   +1 more source

Natural History Collections Georeferencing Survey Report. Current georeferencing practices across institutions worldwide.

open access: yes, 2021
Results of the online survey on collection holdings and georeferencing practices sent to Natural History Collections worldwide (09/12/2019 to 06/04/2020)
Haston, Elspeth   +3 more
core   +1 more source

Georeferencing multi-scale imagery in photogrammetry

open access: yes, 2007
Georeferencing is crucial to make imagery useful for extracting geospatial information. This thesis presents an economic and feasible approach to georeference multi-scale imagery to the common coordinate system, which is called local coordinate system ...
Zhu, Lingli
core   +1 more source

Integrating SfM, LiDAR and TLS for High‐Resolution Monitoring of Palsa Surface Changes and Degradation Dynamics

open access: yesPermafrost and Periglacial Processes, Volume 37, Issue 4, Page 778-803, October/December 2026.
ABSTRACT Understanding fine‐scale surface changes is crucial for quantifying ecosystem dynamics and detecting landscape changes. Palsas, comparably small peatland elevations with an ice‐rich permafrost core, undergo natural cycles of growth and degradation. They can also serve as indicators of climate change in subarctic regions. Because they typically
Alexander Störmer   +3 more
wiley   +1 more source

Retrospective image analysis for long‐term demography using Google Earth imagery

open access: yesRemote Sensing in Ecology and Conservation, Volume 12, Issue 5, Page 816-831, October 2026.
We demonstrate that high‐resolution Google Earth imagery, combined with minimal field validation, enables retrospective tracking of individual invasive plants. The image shows one of the monitored individuals of Opuntia sp. in Greece. Our approach reveals long‐term demographic patterns, recruitment dynamics, and spatial expansion without continuous ...
Erola Fenollosa   +2 more
wiley   +1 more source

Georeferencing in QGIS 2.0

open access: yes, 2013
In this lesson, you will learn how to georeference historical maps so that they may be added to a GIS as a raster layer. Georeferencing is required for anyone who wants to accurately digitize data found on a paper map, and since historians work mostly in
Daniel Macfarlane   +2 more
core  

Georeferencing of close range photogrammetric data [PDF]

open access: yes, 2011
The paper presents some general approaches for indirect georeferencing of close range photogrammetric data being acquired for various applications by the imaging systems of different types either independently or in integration. Various digital metric or
Podlasiak, P.   +2 more
core  

Home - About - Disclaimer - Privacy