Results 131 to 140 of about 2,531 (229)
Direct georeferencing and orthorectification of airborne digital images [PDF]
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
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]
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
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
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
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
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
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
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
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

