Results 21 to 30 of about 807,674 (296)

Possibilities and challenges of expanding dimensions of waterway downstream of Three Gorges Dam

open access: yesWater Science and Engineering, 2019
The waterway in the middle and lower reaches of the Yangtze River has long been known as the Golden Waterway and has served as an important link in the construction of the Yangtze River Economic Belt.
Tao Yan   +4 more
doaj   +1 more source

Sampling Strategies to Improve Passive Optical Remote Sensing of River Bathymetry

open access: yesRemote Sensing, 2018
Passive optical remote sensing of river bathymetry involves establishing a relation between depth and reflectance that can be applied throughout an image to produce a depth map. Building upon the Optimal Band Ratio Analysis (OBRA) framework, we introduce
Carl J. Legleiter   +2 more
doaj   +1 more source

Rethinking Environmental Flows for the Yellow River Estuary by Trading Off Crop Yield and Ecological Benefits

open access: yesAgriculture, 2021
To solve the water use conflicts between agriculture and ecosystems in arid and semiarid areas, a multi-objective trade-off analysis method was applied to determine the environmental flows (e-flows) for the Yellow River Estuary, by considering the ...
Aiping Pang   +3 more
doaj   +1 more source

Investigating uncertainty and parameter sensitivity in bedform analysis by using a Monte Carlo approach [PDF]

open access: yesEarth Surface Dynamics
Precise and reliable information about bedforms regarding geometry and dynamics is relevant for many applications – such as ensuring safe conditions for navigation along the waterways, parameterizing the roughness of the riverbed in numerical models, or ...
J. Reich, A. Winterscheid
doaj   +1 more source

Contaminated Aquatic Sediments [PDF]

open access: yesWater Environment Research, 2007
A review of the literature published in 2014 relating to the assessment, evaluation and remediation of contaminated aquatic sediments is presented. The review is divided into the following sections: policy and guidance, methodology, distribution, fate and transport, bioavailability, bioaccumulation, risk, toxicity and remediation.
openaire   +9 more sources

Deficiency and excess of groundwater iodine and their health associations

open access: yesNature Communications, 2022
Both iodine deficiency and excess could cause thyroid disorders. By creating a national map of groundwater iodine throughout China, the authors reveal the spatial responses of diverse health risks to iodine in continental groundwater.
Ruoqi Ma   +10 more
doaj   +1 more source

Effect of air exposure time on erodibility of intertidal mud flats

open access: yesFrontiers in Marine Science
This study investigates the influence of air exposure time on the erodibility of intertidal mud flats, emphasizing the role of evaporation in altering sediment strength and cohesion.
Floris F. van Rees   +8 more
doaj   +1 more source

Comparing Active Learning for Satellite Imagery: Contrastive Learning, Diversity, Confidence Sampling, and Cold Start Strategies

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
In this article, we investigated and compared common active learning strategies for classification and semantic segmentation tasks using satellite imagery.
David Pogorzelski   +2 more
doaj   +1 more source

Sensitivity and uncertainty analysis of the Variable Infiltration Capacity model in the upstream of Heihe River basin [PDF]

open access: yesProceedings of the International Association of Hydrological Sciences, 2015
The increasing water problems and eco-environmental issues of Heihe River basin have attracted widespread attention. In this research, the VIC (Variable Infiltration Capacity) model was selected to simulate the water cycle of the upstream in Heihe River ...
R. He, B. Pang
doaj   +1 more source

Effects of typical artificial reefs on hydrodynamic characteristics and carbon sequestration potential in the offshore of Juehua Island, Bohai Sea

open access: yesFrontiers in Environmental Science, 2022
The ocean system provides abundant food resources and suitable habitats for numerous animal and plant species. However, the ecological health of the ocean system has deteriorated due to intensified human activities over the past decades.
Anping Shu   +7 more
doaj   +1 more source

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