Results 41 to 50 of about 1,232 (111)

Flooding and a complex predator community drive American oystercatcher nest and chick survival in Virginia

The Journal of Wildlife Management, Volume 90, Issue 2, February 2026.
We investigated low American oystercatcher (Haematopus palliatus) productivity in the Virginia barrier islands, which historically supported high oystercatcher reproductive success. We found that chick survival was lower than nest survival, and that management may need to adapt to address evolving threats from coastal flooding and a multi‐guild ...
Mikayla N. Call, Alexandra L. Wilke, Christy N. Wails, Kristy C. Lapenta, Sarah M. Karpanty, James D. Fraser, Pamela Denmon   +6 more
wiley   +1 more source

Groundwater Age and Nonpoint Source Pollutant Mixing in Alluvial Aquifer Wells: Comparing the Role of Diffusion, Dispersion, Aquifer Heterogeneity, and Well Screen Length

Water Resources Research, Volume 62, Issue 2, February 2026.
Abstract Understanding the mixing of groundwater age and of nonpoint source (NPS) pollutants in water samples is crucial for interpreting age tracer and NPS pollutant data from production wells. Traditionally, diffusion and mechanical dispersion have been key mixing processes embedded in physical models for simulating and interpreting age tracer and ...
Christopher V. Henri, Graham E. Fogg, Thomas Harter   +2 more
wiley   +1 more source

A Robust and Efficient Continuous‐Differentiable Seepage Face Boundary Condition for Dynamic Groundwater Modeling

Water Resources Research, Volume 62, Issue 2, February 2026.
Abstract Seepage boundary conditions are commonly used in groundwater simulations to allow groundwater to discharge at the upper surface of the model when groundwater head exceeds atmospheric pressure. However, the extent and transient behavior of the seepage zone are often unknown a priori and difficult to predict.
Young‐Jin Park, Hyoun‐Tae Hwang, Tatsuya Tanaka, Takenori Ozutsumi, Yutaka Morita, Koji Mori, Steven J. Berg, Walter A. Illman   +7 more
wiley   +1 more source

Conditioning mean steady state flow on hydraulic head and conductivity through geostatistical inversion [PDF]

, 2003
Nonlocal moment equations allow one to render deterministically optimum predictions of flow in randomly heterogeneous media and to assess predictive uncertainty conditional on measured values of medium properties.
GUADAGNINI, ALBERTO, S. P. NEUMAN, J. CARRERA, HERNANDEZ A. F   +3 more
core   +1 more source

Three‐Dimensional Geostatistical Inverse Analyses of Transient Head and Temperature Data From a Long‐Term Heat Tracer Test

Water Resources Research, Volume 62, Issue 2, February 2026.
Abstract Improving the accuracy of subsurface heterogeneity characterization remains a key component in better understanding groundwater flow and contaminant transport. Heat tracer tests can provide temperature measurements, in addition to head data, that can be used for mapping heterogeneity.
Zeren Ning, Tomohiro Nakashima, Kaoru Inaba, Takaaki Shimizu, Hyoun‐Tae Hwang, Walter A. Illman   +5 more
wiley   +1 more source

Characterizing the spatial variability of transmissivity using stochastic type-curves and numerical inverse analyses of data from a sequence of pumping tests [PDF]

, 2008
We discuss two recent methods of characterizing the spatial variability of a random (natural) log transmissivity field on the basis of observed space-time variations in hydraulic head: a graphical stochastic type-curve method (Neuman et al., 2004, 2007 ...
GUADAGNINI, ALBERTO, S. P. NEUMAN, RIVA, MONICA   +2 more
core  

Diagnosing the Flocculation–Transport Dynamics of Suspended Particulate Matter Using a Two‐Class Population Balance Model and Bayesian Calibration

Water Resources Research, Volume 62, Issue 2, February 2026.
Abstract The dynamics of suspended particulate matter (SPM) plays a crucial role in determining water quality, sediment transport, and biogeochemical cycles in inland, estuarine, and coastal water resources. Flocculation processes strongly influence the SPM dynamics via aggregation and breakage under various hydrodynamic and biogeochemical conditions ...
Byung Joon Lee, Trung Tin Huynh, Thi Thuy Trang Pham, Michael Fettweis, Jin Hur, Sang Deuk Lee, Jasper A. Vrugt, Qilong Bi, Xiaoteng Shen, Nathan Terseleer, Sungyun Lee, Yun Young Choi   +11 more
wiley   +1 more source

Sharp Bounds for Neuman Means by Harmonic, Arithmetic, and Contraharmonic Means [PDF]

, 2014
We give several sharp bounds for the Neuman means NAH and NHA (NCA and NAC) in terms of harmonic mean H (contraharmonic mean C) or the geometric convex combination of arithmetic mean A and harmonic mean H (contraharmonic mean C and arithmetic mean A) and
Yu-Ming Chu, Zhi-Jun Guo, Ying-Qing Song, Xiao-Jing Tao   +3 more
core   +1 more source

Non‐Invasive Imaging of Solute Redistribution Below Evaporating Surfaces Using 23Na‐MRI

Water Resources Research, Volume 62, Issue 1, January 2026.
Abstract Saline water evaporation from porous media is a key phenomenon in the terrestrial environment and is linked to problems such as soil salinization and weathering of building materials. Recent modeling studies suggest the development of local instabilities due to density differences during evaporation in case of saturated porous media with high ...
M. A. Chaudhry, S. Kiemle, A. Pohlmeier, R. Helmig, J. A. Huisman   +4 more
wiley   +1 more source

Physics‐Informed Neural Networks to Develop Site‐Specific Pedotransfer Functions

Water Resources Research, Volume 62, Issue 1, January 2026.
Abstract Pedotransfer functions (PTFs) are widely used to estimate soil hydraulic parameters based on easily accessible soil information, playing an important role in the parameterization of earth surface models. However, conventional PTFs, developed using measurements from small volume soil samples, often exhibit significant deviations from field ...
Pengfei Qi, Yunquan Wang, Rui Ma, Jieliang Zhou, Harry Vereecken, Budiman Minasny, Ziyong Sun, Gaofeng Zhu, Kun Zhang   +8 more
wiley   +1 more source