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We present a novel approach to adaptive optimal design of groundwater surveys - a methodology for choosing the location of the next monitoring well. Our dual-weighted approach borrows ideas from Bayesian Optimisation and goal-oriented error…

Applications · Statistics 2022-06-01 Mikkel B Lykkegaard , Tim J Dodwell

We consider the management of sloping, long and thin, coastal aquifers. We first develop a simple mathematical model, based on Darcy flow for porous media, which gives the water table height, and the flow velocity as a function of the…

We observed water film accumulation on silica surfaces in the air to 2 picometer resolution using optical land-contrast (LC) interferometry. The land-contrast approach is non-destructive and allows real-time measurement of thickness…

Optics · Physics 2009-08-06 Xuefeng Wang , Ming zhao , David D Nolte

The Himalayan plateau region of Ladakh, India, is a potential host for a science-class submillimeter observatory, building on existing astronomical infrastructure near Hanle and Merak. Using the fifth-generation European Centre for…

Instrumentation and Methods for Astrophysics · Physics 2026-04-16 Tanmay Singh , Mayuri Sathyanarayana Rao , Ritoban Basu Thakur

Hydropower dams and reservoirs have been identified as the main factors redefining natural hydrological cycles. Therefore, monitoring water status in reservoirs plays a crucial role in planning and managing water resources, as well as…

Image and Video Processing · Electrical Eng. & Systems 2020-12-29 Thai-Bao Duong-Nguyen , Thien-Nu Hoang , Phong Vo , Hoai-Bac Le

Quantitative interpretation of the tidal response of water levels measured in wells has long been made either with a model for perfectly confined aquifers or with a model for purely unconfined aquifers. However, many aquifers may be neither…

Geophysics · Physics 2018-12-26 Chi-Yuen Wang , Mai-Linh Doan , Lian Xue , Andrew Barbour

The Controlled Source Electromagnetic (CSEM) method aims to image electrical resistivity at intermediate depths (0-3 km) for geothermal, mineral, and groundwater exploration. It was developed both as a deeper extension of DC resistivity…

Geophysics · Physics 2026-05-28 F Bretaudeau , S Védrine , C Patzer , B Kim , F Dubois , U Autio , J Kamm , M Darnet

The Atacama Desert has long been established as an excellent site for submillimeter observations. Yet identifying potentially optimal locations for a new facility within this region can require long field campaigns that rely on the…

Instrumentation and Methods for Astrophysics · Physics 2022-03-08 Pablo Gómez Toribio , Tony Mroczkowski , Anna Cabré , Carlos De Breuck , Ricardo Bustos , Rodrigo Reeves

The renewable energy sector critically needs low-cost and environmentally neutral energy storage solutions throughout the entire device life cycle. However, the limited performance of standard water-based electrochemical systems prevents…

The Water Residence Time distribution is the equivalent of the impulse response of a linear system allowing the propagation of water through a medium, e.g. the propagation of rain water from the top of the mountain towards the aquifers. We…

Signal Processing · Electrical Eng. & Systems 2018-03-22 Alina G. Meresescu , Matthieu Kowalski , Frédéric Schmidt , François Landais

As groundwater is an essential nutrition and irrigation resource, its pollution may lead to catastrophic consequences. Therefore, accurate modeling of the pollution of the soil and groundwater aquifer is highly important. As a model, we…

Numerical Analysis · Mathematics 2019-06-13 Alexander Litvinenko , Dmitry Logashenko , Raul Tempone , Gabriel Wittum , David Keyes

To provide a complete local monitoring of the state of an unsaturated soil sample during triaxial testing, a local water content measurement device was adapted to a triaxial device comprising the measurement of local displacements (Hall…

Geophysics · Physics 2013-03-22 José Munoz-Castelblanco , Pierre Delage , Jean-Michel Pereira , Yu-Jun Cui

Understanding groundwater dynamics is critical for sustainable water management, particularly as climate extremes intensify. However, the resolutions of existing subsurface observational tools are still inadequate for detailed aquifer…

Geophysics · Physics 2025-01-22 Haipeng Li , Jingxiao Liu , Shujuan Mao , Siyuan Yuan , Robert G. Clapp , Biondo L. Biondi

Groundwater is the largest storage of freshwater resources, which serves as the major inventory for most of the human consumption through agriculture, industrial, and domestic water supply. In the fields of hydrological, some researchers…

Machine Learning · Computer Science 2021-07-30 Pejman Zarafshan , Saman Javadi , Abbas Roozbahani , Seyed Mehdi Hashemy , Payam Zarafshan , Hamed Etezadi

We show, essentially by theoretical means, that for a site with the chosen simple geometry and mechanical properties (horizontal, homogeneous, soft viscoelastic layer of infinite lateral extent overlying, and in welded contact with, a…

Geophysics · Physics 2007-05-23 Armand Wirgin , J. -P. Groby

The research assesses soil salinity in the southwest coastal region of Bangladesh, collecting a total of 162 topsoil samples between March 1 and March 9, 2024, and processing them following the standard operating procedure for soil…

As global groundwater levels continue to decline rapidly, there is a growing need for advanced techniques to monitor and manage aquifers effectively. This study focuses on validating a numerical model using seismic data from a small-scale…

In this technical report we compare different deep learning models for prediction of water depth rasters at high spatial resolution. Efficient, accurate, and fast methods for water depth prediction are nowadays important as urban floods are…

Hydrologic observations and experimental studies indicate that inelastic dilation from coseismic fault damage can cause substantial pore pressure reduction, yet most near-fault hydromechanical models ignore such inelastic effects. Here, we…

Geophysics · Physics 2026-01-01 Ruei-Jiun Hung , Matthew Weingarten , Shuo Ma , Steven M. Day

Groundwater is a precious natural resource. Groundwater level (GWL) forecasting is crucial in the field of water resource management. Measurement of GWL from observation-wells is the principle source of information about the aquifer and is…

Machine Learning · Computer Science 2019-12-13 Supreetha B. S , Narayan Shenoy , Prabhakar Nayak