Results 31 to 40 of about 29,646 (296)

Understory host plant and insect gall diversity changes across topographic habitats differing in nutrient and water stress in the Brazilian Amazon rainforest [PDF]

open access: yesActa Amazonica, 2017
Topographic gradients in terra firme forests are associated with pronounced changes in soil texture, soil nutrients and distance to the water-table, thereby creating different hydric and nutritional conditions for plants and their associated herbivore ...
Genimar Rebouças JULIÃO   +4 more
doaj   +1 more source

Topographic effects on buoyancy driven flows along the slope

open access: yesEnvironmental Fluid Mechanics, 2022
AbstractThe flow and descent of dense water masses formed in shallow regions of the ocean is an important leg in the global overturning circulation. The dense overflow waters tend to flow along the continental slopes as geostrophically balanced gravity plumes, but may be steered downslope by canyons and ridges cross-cutting the slopes. In that process,
Jarle Berntsen   +2 more
openaire   +3 more sources

Soil property and crop yield responses to variation in land use and topographic position: Case study from southern highland of Ethiopia

open access: yesHeliyon
Understanding soil property and crop yield responses to variations in land use and topographic gradient is vital for designing targeted soil and agronomic management practices.
Getahun Haile   +3 more
doaj   +1 more source

Tectonic denudation and topographic development in the Spanish Sierra Nevada [PDF]

open access: yes, 2007
The denudation history of the rapidly uplifting western part of the Spanish Sierra Nevada was assessed using apatite fission track (AFT) ages and 10Be analyses of bedrock and fluvial sediments.
J. F. Shroder   +11 more
core   +1 more source

Acausal relations between topographic slope and drainage area [PDF]

open access: yesGeophysical Research Letters, 2002
For real landscapes, the local slope is related to the area of the drainage basin. Such relations do not always indicate a causal link between drainage area and local slope. We provide a general and quantitative assessment of this statistical effect.
Norbert Schorghofer, Daniel H. Rothman
openaire   +1 more source

Determination of Important Topographic Factors for Landslide Mapping Analysis Using MLP Network

open access: yesThe Scientific World Journal, 2013
Landslide is one of the natural disasters that occur in Malaysia. Topographic factors such as elevation, slope angle, slope aspect, general curvature, plan curvature, and profile curvature are considered as the main causes of landslides.
Mutasem Sh. Alkhasawneh   +4 more
doaj   +1 more source

Safe Path Correction Method for Ambulance Aircraft Based on Low-Altitude Wind Prediction

open access: yesIEEE Access, 2020
The flight height of ambulance aircraft during aviation emergency rescue is low. Low-altitude wind fields and complex terrains may threaten the flight safety of rescue aircraft and thus limit rescue efficiency.
Ming Zhang
doaj   +1 more source

Evaluation of high quality topographic data for geomorphological and flood impact studies in upland area: North York Moors, UK [PDF]

open access: yes, 2006
A flash flood on 19th June 2005 caused more than one hundred landslides in the North-western North York Moors uplands, UK. This project aims to 1) assess digital elevation models (DEMs) in terms of statistical terrain analysis and 2) explore the ...
Dong, Lu
core  

Brainstem and Cerebellar Volume Loss and Associated Clinical Features in Progressive Supranuclear Palsy

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Introduction Progressive Supranuclear Palsy (PSP) is a neurodegenerative ‘tauopathy’ with predominating pathology in the basal ganglia and midbrain. Caudal tau spread frequently implicates the cerebellum; however, the pattern of atrophy remains equivocal.
Chloe Spiegel   +8 more
wiley   +1 more source

Evaluation of the Accuracy of Extraction of Slope and Length Based on DEM of GF-7 Satellite

open access: yesShuitu Baochi Xuebao
[Objective] Slope and slope length are essential topographic factors, and their calculation accuracy directly affects the evaluation accuracy of slope soil erosion model. The high-precision elevation measurement capability of Gaofen-7 satellite has great
ZHAO Yunlong, FU Suhua
doaj   +1 more source

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