Results 131 to 140 of about 2,531 (229)

Direct georeferencing and orthorectification of airborne digital images [PDF]

open access: yes, 2008
GPS/INS (Global Positioning System / Inertial Navigation System) brings possibility of relaxing the demand for aerial triangulation in stereo model construction and rectification.
ALİ COŞKUN KİRACI
core  

Scrutinizing the Wallacean shortfall: global gaps in snake occurrence data across space and environment

open access: yesEcography, Volume 2026, Issue 7, July 2026.
Occurrence records are fundamental for ecological and evolutionary research, providing key information on species' geographic ranges. However, these records are often taxonomically, spatially, and temporally biased, requiring caution in their use. Here, we analysed the spatial coverage of occurrence records for over 3500 snake species worldwide to ...
Lívia Frateles   +5 more
wiley   +1 more source

Direct Georeferencing with GPS in Terrestrial Laser Scanning [Elektronisk resurs] [PDF]

open access: yes, 2010
In this paper, a combined terrestrial laser scanning survey system is presented, where GPS can be used for direct georeferencing of the point clouds. The results of investigations of this system show that it is possible to achieve the coordinate accuracy
Reshetyuk, Yuriy,
core  

Decadal‐scale variability and predictors of large wood storage in meandering rivers across Europe

open access: yesEarth Surface Processes and Landforms, Volume 51, Issue 7, July 2026.
Across 65 meander bends in four European rivers, interannual large wood storage is controlled by river‐specific factors, while local channel geometry, riparian vegetation and flow metrics exert weak and largely stochastic influences. The lack of transferable predictors demonstrates that long‐term, site‐specific monitoring is essential for effective ...
Tomáš Galia   +3 more
wiley   +1 more source

Direct georeferencing with correction of map projection distortions for active imaging

open access: yesGeoinformatics FCE CTU, 2016
In aerial photogrammetry, the Cartesian coordinate system for the description of object space is commonly used. In contrast, many projects have to be processed in the space combined by the composition of a map projection and Vertical datum. In that space, some geometric deformations exist.
openaire   +3 more sources

Drought Impact on Industrial Water Discharges in Spain's Agri‐Food Sector

open access: yesHydrological Processes, Volume 40, Issue 7, July 2026.
The PRTR–SPEI panel estimates confirm a positive and statistically stable effect of droughts on industrial discharges, with consistent increases in COD and nitrogen under more negative SPEI scores. This result reflects a structural relationship between hydrological stress and industrial behaviour: reduced flows and dilution capacity during dry periods ...
Javier Arévalo‐Royo   +5 more
wiley   +1 more source

River Ice Analyses and Roughness Calculations Using Underwater Drones and Photogrammetric Approach

open access: yesHydrological Processes, Volume 40, Issue 7, July 2026.
This study presents a methodology for determining hydraulic roughness (Manning's n) of fluvial ice using underwater drone and Structure from Motion (SfM) photogrammetry. The findings show that cost‐efficient equipment can be used to determine Manning's n for river ice, which supports modelling efforts, especially under intense warming in northern areas.
Reeta Vaahtera   +3 more
wiley   +1 more source

Habitat‐based spatial patterns enable realistic reconstruction of plant spatial arrangements across complex landscapes

open access: yesOikos, Volume 2026, Issue 7, July 2026.
Spatially explicit individual‐based models provide a powerful way to explore spatial dynamics when direct observation is not feasible. But for many ecological applications, these models require detailed data on the initial spatial arrangement and traits of individuals – information rarely available in large, heterogeneous or novel landscapes.
Brayan Morera   +4 more
wiley   +1 more source

The Age and Origin of Block Deposits in the Victorian Alps, Australia

open access: yesPermafrost and Periglacial Processes, Volume 37, Issue 3, Page 391-415, July/September 2026.
ABSTRACT Large periglacial block deposits are found in the mountains of southeastern Australia. Despite their widespread distribution, their mode of formation and age are poorly understood. These landforms hold considerable potential to shed light on the nature of cooling during glacial periods. In this paper we present a new study of block deposits in
Timothy T. Barrows   +4 more
wiley   +1 more source

Capturing the Multi‐Decadal Evolution of Glacier–Permafrost Interactions in a High‐Alpine Environment (Ritord, Western Swiss Alps)

open access: yesPermafrost and Periglacial Processes, Volume 37, Issue 3, Page 473-497, July/September 2026.
ABSTRACT This study investigates the multi‐decadal evolution of a glacier forefield under permafrost conditions in the Combins Massif (western Swiss Alps). A multi‐method approach based on historical and recent datasets is used to analyze its landform components.
Julie Wee   +2 more
wiley   +1 more source

Home - About - Disclaimer - Privacy