Results 41 to 50 of about 1,705,220 (426)

GlobSed: Updated Total Sediment Thickness in the World's Oceans

open access: yesGeochemistry Geophysics Geosystems, 2019
We present GlobSed, a new global 5‐arc‐minute total sediment thickness grid for the world's oceans and marginal seas. GlobSed covers a larger area than previously published global grids and incorporates updates for the NE Atlantic, Arctic, Southern Ocean,
E. Straume   +8 more
semanticscholar   +1 more source

Simulation of sediment incipience around the vibrating monopile [PDF]

open access: yesarXiv, 2023
Based on the fluid volume fraction large eddy simulation discrete phase coupling model, the water and sediment flow around the vibrating monopile was simulated. The discrete phase momentum model was enhanced using the force distribution of the particle phase on the bed surface.
arxiv  

Hydraulic and mechanical properties of glacial sediments beneath Unteraargletscher, Switzerland: implications for glacier basal motion [PDF]

open access: yes, 2001
The force on a ‘ploughmeter’ and subglacial water pressure have been measured in the same borehole at Unteraargletscher, Switzerland, in order to investigate ice–sediment coupling and the motion at the base of a soft-bedded glacier.
Agassiz   +57 more
core   +1 more source

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

Reduced sediment transport in the Yellow River due to anthropogenic changes

open access: yes, 2016
The erosion, transport and redeposition of sediments shape the Earth's surface, and affect the structure and function of ecosystems and society(1,2). The Yellow River was once the world's largest carrier of fluvial sediment, but its sediment load has ...
Shuai Wang   +6 more
semanticscholar   +1 more source

A physical model for seismic noise generation from sediment transport in rivers [PDF]

open access: yes, 2012
Measuring sediment flux in rivers remains a significant problem in studies of landscape evolution. Recent studies suggest that observations of seismic noise near rivers can help provide such measurements, but the lack of models linking observed seismic ...
Ampuero, Jean-Paul   +3 more
core   +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

Impact of dissolved oxygen and loading rate on NH3 oxidation and N2 production mechanisms in activated sludge treatment of sewage

open access: yesMicrobial Biotechnology, 2021
Summary Microaerobic activated sludge (MAS) is a one‐stage process operated at 0.5–1.0 mg l−1 dissolved oxygen (DO) aiming at simultaneous nitrification and denitrification.
Xueyu Zhang   +3 more
doaj   +1 more source

Effects of deposit-feeding bivalve (Macomona liliana) density on intertidal sediment stability [PDF]

open access: yes, 2004
Effects of macrofaunal feeding and bioturbation on intertidal sediment stability (u*crit) were investigated by manipulating density (0-3 x ambient) of the facultative deposit-feeding wedge shell (Macomona liliana) on the Tuapiro sandflat in Tauranga ...
Dayton P. K.   +15 more
core   +2 more sources

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

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