Filtering by Subject: Hydrology

A Comparison of Methods for Assessing Groundwater Flooding Due to Sea Level Rise

Daniel Rozell

Published: 2022-01-20
Subjects: Hydrology

This technical note compares two groundwater flooding assessments for a site on the Rockaway Peninsula of New York City, a coastal barrier island subject to several climate change risks including groundwater flooding. One assessment was performed using a MODFLOW groundwater model while the other used an interpolated water table map constructed in GIS. The two methods showed minor differences in [...]

On Strictly Enforced Mass Conservation Constraints for Modeling the Rainfall-Runoff Process

Jonathan Frame, Paul Ullrich, Grey Nearing, et al.

Published: 2022-01-20
Subjects: Hydrology

It has been proposed that conservation laws might not be beneficial for accurate hydrological modeling due to errors in input (precipitation) and target (streamflow) data, and this might explain why deep learning models (which are not based on enforcing closure) can out-perform catchment-scale conceptual and process-based models at predicting streamflow. We test this hypothesis using [...]

Fully distributed rainfall-runoff modeling using spatial-temporal graph neural network

Zhongrun Xiang, Ibrahim Demir

Published: 2022-01-15
Subjects: Civil and Environmental Engineering, Earth Sciences, Engineering, Environmental Engineering, Hydrology

Recent studies using latest deep learning algorithms such as LSTM (Long Short-Term Memory) have shown great promise in time-series modeling. There are many studies focusing on the watershed-scale rainfall-runoff modeling or streamflow forecasting, often considering a single watershed with limited generalization capabilities. To improve the model performance, several studies explored an integrated [...]

ReaLSAT, a global dataset of reservoir and lake surface area variations

Ankush Khandelwal, Anuj Karpatne, Praveen Ravirathinam, et al.

Published: 2022-01-11
Subjects: Hydrology, Other Computer Sciences, Water Resource Management

Lakes and reservoirs, as most humans experience and use them, are dynamic bodies of water, with surface extents that increase and decrease with seasonal precipitation patterns, long-term changes in climate, and human management decisions. This paper presents a new global dataset that contains the location and surface area variations of 683,734 medium-sized (0.1 - 100 sq. km.) lakes and reservoirs [...]

Quantifying Streamflow Depletion from Groundwater Pumping: A Practical Review of Past and Emerging Approaches for Water Management

Samuel C Zipper, William H Farmer, Andrea Brookfield, et al.

Published: 2022-01-07
Subjects: Environmental Indicators and Impact Assessment, Hydrology, Natural Resources Management and Policy, Sustainability, Water Resource Management

Groundwater pumping can cause reductions in streamflow (‘streamflow depletion’) that must be quantified for conjunctive management of groundwater and surface water resources. However, streamflow depletion cannot be measured directly and is challenging to estimate because pumping impacts are masked by streamflow variability due to other factors. Here, we conduct a management-focused review of [...]

A Comprehensive Web-based System for Flood Inundation Map Generation and Comparative Analysis Based on Height Above Nearest Drainage

Zhouyayan Li, Ibrahim Demir

Published: 2021-12-31
Subjects: Earth Sciences, Environmental Sciences, Hydrology, Water Resource Management

It is critical to obtain accurate flood extent predictions in a timely manner in order to reduce flood-related casualties and economic losses. Running a real-time flood inundation mapping model is a critical step in supporting quick flood response decisions. Most inundation systems, on the other hand, are either overly demanding in terms of data and computing power or have limited interaction and [...]

WaterBench: A Large-scale Benchmark Dataset for Data-Driven Streamflow Forecasting

Ibrahim Demir, Zhongrun Xiang, Bekir Zahit Demiray, et al.

Published: 2021-12-31
Subjects: Civil and Environmental Engineering, Computer Sciences, Earth Sciences, Hydrology

This study proposes a comprehensive benchmark dataset for streamflow forecasting, WaterBench, that follows FAIR data principles that is prepared with a focus on convenience for utilizing in data-driven and machine learning studies, and provides benchmark performance for state-of-art deep learning architectures on the dataset for comparative analysis. By aggregating the datasets of streamflow, [...]

ICESat-2 Reservoir Applications: A case study from the largest man-made reservoir in India

Surajit Ghosh, Atul Kaushik

Published: 2021-12-24
Subjects: Hydrology

Monitoring inland water levels is crucial for understanding hydrological processes to climate change impact leading to policy implementation. Satellite altimetry has proved to be an excellent technique to precisely measure water levels of rivers, lakes, and other inland water bodies. The ATL13 product of ICESat-2 space-borne LiDAR is solely dedicated to inland water bodies. The water surface [...]

GANSim-3D for conditional geomodelling: theory and field application

Suihong Song, Tapan Mukerji, Jiagen Hou, et al.

Published: 2021-12-22
Subjects: Artificial Intelligence and Robotics, Computational Engineering, Geology, Hydrology, Numerical Analysis and Scientific Computing, Oil, Gas, and Energy, Theory and Algorithms, Water Resource Management

Geomodelling of subsurface reservoirs is important for water resources, hydrocarbon exploitation, and Carbon Capture and Storage (CCS). Traditional geostatistics-based approaches cannot abstract complex geological patterns and are thus not able to simulate very realistic earth models. We present a Generative Adversarial Networks (GANs)-based 3D reservoir simulation framework, GANSim-3D, which can [...]

COVID-19 Impacts Highlight the Need for Holistic Evaluation of Research and in the Hydrologic Sciences

Adam Scott Ward

Published: 2021-12-06
Subjects: Earth Sciences, Hydrology, Physical Sciences and Mathematics

As we reckon with the effect of COVID-19 on the research enterprise in hydrologic science, it is important to acknowledge that disruptions will be persistent and that institutional-level adjustments, while helpful, are not sufficient to mitigate all impacts on hydrologic scientists. Here, we describe the breadth of research contributions in the hydrologic sciences, consider how the pandemic has [...]

Conceptualizing the hydrogeothermal setting of Sloquet Hot Springs in the Canadian Cordillera on unceded St'at'imc Territory: an example of a reconciliation-based approach to field geoscience

Ashley Van Acken, Tom Gleeson, Darryl Peters, et al.

Published: 2021-11-26
Subjects: Hydrology, Natural Resources Management and Policy, Physical Sciences and Mathematics

Field geoscience has made important scientific advances but has not consistently considered the impact of these geoscience results on communities where the fieldwork is conducted. A reconciliation-based approach calls for critical thought about who defines, participates in, owns, and uses geoscience research, particularly in light of unresolved aboriginal rights and title claims and treaty rights [...]

Reproducibility in subsurface geoscience

Michael J. Steventon, Chris Jackson, Mark Ireland, et al.

Published: 2021-10-27
Subjects: Biogeochemistry, Cosmochemistry, Earth Sciences, Environmental Education, Environmental Health and Protection, Environmental Indicators and Impact Assessment, Environmental Monitoring, Environmental Sciences, Geochemistry, Geology, Geomorphology, Geophysics and Seismology, Glaciology, Hydrology, Mineral Physics, Natural Resource Economics, Natural Resources and Conservation, Natural Resources Management and Policy, Oil, Gas, and Energy, Other Earth Sciences, Other Environmental Sciences, Paleobiology, Paleontology, Sedimentology, Soil Science, Speleology, Stratigraphy, Sustainability, Tectonics and Structure, Volcanology, Water Resource Management

Reproducibility, the extent to which consistent results are obtained when an experiment or study is repeated, sits at the foundation of science. The aim of this process is to produce robust findings and knowledge, with reproducibility being the screening tool to benchmark how well we are implementing the scientific method. However, the re-examination of results from many disciplines has caused [...]

Seiching period from experiment and numerical simulation

Fei Liu, David Huang

Published: 2021-10-19
Subjects: Hydrology

Seiching is a common phenomenon in nature where a large body of water exhibits periodic behavior. First, we set up water oscillations in a tank and measure its oscillation period. Then we use OpenFOAM to simulate the oscillation behavior of the water waves in a 3D mesh with the same dimensions as the tank used in the experiment. Applying the Fourier transformation on the velocities calculated [...]

Dam Break Simulation with HEC-RAS and OpenFOAM

Darren Jia

Published: 2021-09-22
Subjects: Earth Sciences, Hydrology, Physical Sciences and Mathematics

A dam break is a natural disaster that can cause significant property damage and loss of life. It's useful to identify potential flooding areas downstream in the event of a dam break. In this study both HEC-RAS and OpenFOAM are set up to simulate the inundation map downstream of the Dworshak dam in Idaho. Using the same topographical data from satellite observations, similar computational [...]

Tree cover change proves stability and instability in tropical ecosystems

Chandrakant Singh, Ruud van der Ent, Lan Wang-Erlandsson, et al.

Published: 2021-09-17
Subjects: Earth Sciences, Ecology and Evolutionary Biology, Forest Biology, Hydrology, Remote Sensing

The resilience of terrestrial ecosystems is predominantly based on space-for-time substitution. This substitution assumes that the contemporary spatial frequency distribution of ecosystems’ tree cover structure holds across time. However, this assumption is problematic, especially when temporal dynamics and adaptations are increasingly important to explicitly account for ongoing rapid changes [...]


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