Environment
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Comparison of MODIS and SWAT evapotranspiration over a complex terrain at different spatial scales
(Copernicus Publications on behalf of the European Geosciences Union., 2018)In most hydrological systems, evapotranspiration (ET) and precipitation are the largest components of the water balance, which are difficult to estimate, particularly over complex terrain. In recent decades, the advent ... -
Fluoride and phosphate release from carbonate-rich fluorapatite during managed aquifer recharge
(Elsevier, 2018-07)Managed aquifer recharge (MAR) is increasingly used as a water management tool to enhance water availability and to improve water quality. Until now, however, the risk of fluoride release during MAR with low ionic strength ... -
Climatic and environmental controls on stable isotopes in atmospheric water vapor near the surface observed in Changsha, China
(Elsevier, 2018)Continuous measurements were made of isotopic compositions in atmospheric water vapor (δv) and in atmospheric precipitation (δp) near the surface in the subtropical monsoon region (Changsha, China) from October 2014 to ... -
Uncertainty of groundwater recharge estimated from a water and energy balance model
(Elsevier, 2017-08-16)Coupled water and energy balance models have become increasingly popular for estimating groundwater recharge, because of the integration of energy and water balances and sometimes carbon balance. The additional balances ... -
Foredune morphodynamics and sediment budgets at seasonal to decadal scales: Humboldt Bay National Wildlife Refuge, California, USA.
(Elsevier, 2018-06-04)Coastal foredunes are shore-parallel ridges that form in the backshore and their morphodynamics are controlled partly by seasonal and spatial variations in the coastal (onshore) sediment budget that, in turn, are driven ... -
Revisiting analytical solutions for steady interface flow in subsea aquifers: Aquitard salinity effects
(Elsevier, 2018-01-31)Existing analytical solutions for the distribution of fresh groundwater in subsea aquifers presume that the overlying offshore aquitard, represented implicitly, contains seawater. Here, we consider the case where offshore ... -
On the resilience of small-island freshwater lenses: Evidence of the long-term impacts of groundwater abstraction on Bonriki Island, Kiribati
(Elsevier, 2018-06-15)Groundwater on islands occurs in the form of freshwater lenses that serve as an important water resource for local inhabitants. These lenses are highly vulnerable to salinization due to natural recharge variations and ... -
The onshore influence of offshore fresh groundwater
(Elsevier, 2018-03-13)Freshwater contained within the submarine extensions of coastal aquifers is increasingly proposed as a freshwater source for coastal communities. However, the extent to which offshore freshwater supports onshore pumping ... -
A Generalized Semi-Analytical Solution for the Dispersive Henry Problem: Effect of Stratification and Anisotropy on Seawater Intrusion
(MDPI, 2018-02-23)The Henry problem (HP) continues to play a useful role in theoretical and practical studies related to seawater intrusion (SWI) into coastal aquifers. The popularity of this problem is attributed to its simplicity and ... -
Active heat pulse sensing of 3-D-flow fields in streambeds
(Copernicus Publications on behalf of the European Geosciences Union, 2018-03-20)Profiles of temperature time series are commonly used to determine hyporheic flow patterns and hydraulic dynamics in the streambed sediments. Although hyporheic flows are 3-D, past research has focused on determining the ... -
Flux dynamics at the groundwater-surface water interface in a tropical catchment
(Elsevier, 2017-07-12)Seasonal shifts between wet and dry seasons cause marked changes in river flow regimes and therefore exchanges with the streambed surface. This seasonal variation is particularly apparent in tropical climates, which are ... -
Semianalytical solutions for contaminant transport under variable velocity field in a coastal aquifer
(Elsevier, 2018-03-21)Existing closed-form solutions of contaminant transport problems are limited by the mathematically convenient assumption of uniform flow. These solutions cannot be used to investigate contaminant transport in coastal ... -
Non-pumping reactive wells filled with mixing nano and micro zero-valent iron for nitrate removal from groundwater: Vertical, horizontal, and slanted wells
(Elsevier, 2018-02-27)Non-pumping reactive wells (NPRWs) filled by zero-valent iron (ZVI) can be utilized for the remediation of groundwater contamination of deep aquifers. The efficiency of NPRWs mainly depends on the hydraulic contact time ... -
Density-based global sensitivity analysis of sheet-flow travel time: Kinematic wave-based formulations
(Elsevier, 2018-02-24)Despite advancements in developing physics-based formulations to estimate the sheet-flow travel time (), the quantification of the relative impacts of influential parameters on has not previously been considered. In this ... -
Assessing the controls and uncertainties on mean transit times in contrasting headwater catchments
(Elsevier, 2017-12-06)Estimating the time required for water to travel through headwater catchments from where it recharges to where it discharges into streams (the transit time) is important for understanding catchment behaviour. This study ... -
Exchange across the sediment-water interface quantified from porewater radon profiles
(Elsevier, 2018-03-06)Water recirculation through permeable sediments induced by wave action, tidal pumping and currents enhances the exchange of solutes and fine particles between sediments and overlying waters, and can be an important ... -
Physical water scarcity metrics for monitoring progress towards SDG target 6.4: An evaluation of indicator 6.4.2 “Level of water stress”
(Elsevier, 2018-02-01)Target 6.4 of the recently adopted Sustainable Development Goals (SDGs) deals with the reduction of water scarcity. To monitor progress towards this target, two indicators are used: Indicator 6.4.1 measuring water use ... -
Using hydraulic head, chloride and electrical conductivity data to distinguish between mountain-front and mountain-block recharge to basin aquifers
(Copernicus Publications on behalf of the European Geosciences Union, 2018-03-02)Numerous basin aquifers in arid and semi-arid regions of the world derive a significant portion of their recharge from adjacent mountains. Such recharge can effectively occur through either stream infiltration in the ... -
Responses of plant water use to a severe summer drought for two subtropical tree species in the central southern China
(Elsevier, 2016-09-16)Study region Western suburb of Changsha, Hunan Province, the central southern China. Study focus Plant transpiration plays a significant role in the terrestrial water cycle and is closely associated with ecosystem ... -
Spatial-Temporal Simulation of LAI on Basis of Rainfall and Growing Degree Days
(MDPI, 2017-11-23)The dimensionless Leaf Area Index (LAI) is widely used to characterize vegetation cover. With recent remote sensing developments LAI is available for large areas, although not continuous. However, in practice, continuous ...
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