Preprints

Filtering by Subject: Hydrology

Groundwater resource allocation in British Columbia: challenges and ways forward

Tom Gleeson, Diana M Allen

Published: 2022-06-24
Subjects: Environmental Engineering, Hydrology, Sustainability, Water Resource Management

Groundwater allocation in British Columbia is facing a number of important challenges as groundwater is licensed under the Water Sustainability Act and potentially included in modern treaties. These challenges include acknowledging the importance of groundwater in supporting environmental flow needs and human water use, the uncertainty and irrelevance of annual recharge estimates, and the [...]

Links between soil moisture and InSAR data on a temperate raised peatland subjected to a wildfire

Alexis Hrysiewicz, Eoghan P. Holohan, Shane Donohue, et al.

Published: 2022-06-17
Subjects: Geophysics and Seismology, Hydrology, Soil Science

Interferometry of Synthetic Aperture Radar (InSAR) can potentially contribute to the cost-effective regional or global monitoring of the degradation and restoration of peatlands. However, there are uncertainties about the links between InSAR results and peatland ecohydrological parameters, especially soil moisture. Here, we analyse the relationships between the temporal evolutions of InSAR [...]

Validation of glacial-interglacial rainfall variations in southwest Sulawesi using Mg/Ca and δ18O in speleothems

Alena K Kimbrough, Michael Gagan, Gavin Dunbar, et al.

Published: 2022-06-17
Subjects: Atmospheric Sciences, Climate, Earth Sciences, Geochemistry, Hydrology, Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics, Speleology

Speleothem δ18O is widely used as a proxy for rainfall amount in the tropics on glacial-interglacial to interannual scales. However, uncertainties in the interpretation of this renowned proxy pose a vexing problem in tropical paleoclimatology. Here, we present paired measurements of Mg/Ca and δ18O for multiple stalagmites from southwest Sulawesi, Indonesia, that that confirm changes in rainfall [...]

An Artificial Neural Network Emulator of the Rangeland Hydrology and Erosion Model

Mahmoud Saeedimoghaddam, Grey Nearing, Mariano Hernandez, et al.

Published: 2022-06-17
Subjects: Artificial Intelligence and Robotics, Dynamic Systems, Hydrology, Natural Resources and Conservation

Machine learning (ML) is becoming an ever more important tool in hydrologic modeling. Many studies have shown the higher prediction accuracy of the ML models over traditional process-based ones. However, there is another advantage of ML which is its lower computer time of execution. This is important for the applications such as hydraulic soil erosion estimation over a large area and at a finer [...]

PING-Mapper: open-source software for automated benthic imaging and mapping using recreation-grade sonar

Cameron Bodine, Daniel David Buscombe, Rebecca J Best, et al.

Published: 2022-06-14
Subjects: Environmental Monitoring, Hydrology, Natural Resources and Conservation

The characterization of benthic habitats is essential for aquatic ecosystem science and management, but is frequently limited by waterbody visibility and depth. Recreation-grade side scan sonar systems are increasingly used to aid scientific inquiries in shallow water due to their relative low-cost, ease of operation, low-weight, and ease of mounting on a variety of vessels. However, existing [...]

Resilience of woody ecosystems to precipitation variability

Daniell M Rempe, Erica L McCormick, W Jesse Hahm, et al.

Published: 2022-05-20
Subjects: Hydrology, Other Forestry and Forest Sciences

Large-scale plant mortality has far-reaching consequences for the water and carbon cycles. The role of belowground root-zone water storage (RWS) on the conditions that lead to mortality remains uncertain. It has been proposed that the RWS capacity, Smax, can determine ecosystem vulnerability to drought (Hahm et al., 2019a, Klos et al., 2018). However, incorporating information about RWS into [...]

A univariate extreme value analysis and change point detection of monthly discharge in Kali Kupang, Central Java, Indonesia

Sandy Hardian Susanto Herho

Published: 2022-05-20
Subjects: Applied Statistics, Hydrology, Probability, Water Resource Management

This study presents how Extreme Value Analysis (EVA) can be used to predict future extreme hydrological events and how dynamic-programming based change point detection algorithm can be used to detect the abrupt transition in discharge events variability in Kali Kupang, Central Java, Indonesia. By using the annual block maxima, we can predict the upper extreme discharge probability from the Gumbel [...]

Caravan - A global community dataset for large-sample hydrology

Frederik Kratzert, Grey Nearing, Nans Addor, et al.

Published: 2022-05-19
Subjects: Earth Sciences, Hydrology, Physical Sciences and Mathematics

High-quality datasets are essential to support hydrological science and modeling. Several CAMELS (Catchment Attributes and Meteorology for Large-sample Studies) datasets exist for specific countries or regions, however these datasets lack standardization, which makes global studies difficult. This paper introduces a dataset called \emph{Caravan} (a series of CAMELS) that standardizes and [...]

The quest for the missing plastics: Large uncertainties in river plastic export into the sea

Caspar Roebroek, Tim van Emmerik, Daniel González-Fernández, et al.

Published: 2022-05-16
Subjects: Environmental Health and Protection, Environmental Studies, Hydrology

Plastic pollution in the natural environment is causing increasing concern at both the local and global scale. Understanding the dispersion of plastic through the environment is of key importance for the effective implementation of preventive measures and cleanup strategies. Over the past few years, various models have been developed to estimate the transport of plastics in rivers, using limited [...]

Breaking the window of detection: Using multi-scale solute tracer studies to assess mass recovery at the detection limit

Adam Scott Ward, Steve Wondzell, Mike Gooseff, et al.

Published: 2022-05-05
Subjects: Hydrology

Stream solute tracers are commonly injected to assess transport and transformation in study reaches, but results are biased toward the shortest and fastest storage locations. While this bias has been understood for decades, the impact of an experimental constraint on our understanding has yet to be considered. Here, we ask how different our understanding of reach- and segment-scale transport [...]

Fluid-driven transport of round sediment particles: from discrete simulations to continuum modeling

Qiong Zhang, Eric Deal, J. Taylor Perron, et al.

Published: 2022-04-17
Subjects: Applied Mechanics, Geomorphology, Hydrology

Bedload sediment transport is ubiquitous in shaping natural and engineered landscapes, but the variability in the relation between sediment flux and driving factors is not well understood. At a given Shields number, the observed dimensionless transport rate can vary over a range in controlled systems and up to several orders of magnitude in natural streams. Here we (1) experimentally validate a [...]

Interactive Hydrological Modelling and Simulation on Client-Side Web Systems: An Educational Case Study

Gregory James Ewing, Ricardo Mantilla, Witold F. Krajewski, et al.

Published: 2022-04-13
Subjects: Civil and Environmental Engineering, Earth Sciences, Education, Engineering, Engineering Education, Environmental Education, Environmental Engineering, Hydraulic Engineering, Hydrology, Numerical Analysis and Scientific Computing, Other Civil and Environmental Engineering, Physical Sciences and Mathematics, Science and Mathematics Education, Water Resource Management

Computational hydrological models and simulations are fundamental pieces of the workflow of contemporary hydroscience research, education, and professional engineering activities. In support of hydrological modelling efforts, web-enabled tools for data processing, storage, computation, and visualization have proliferated. Most of these efforts rely on server resources for computation and data [...]

Groundwater in complex adaptive social-ecological systems

Xander Huggins, Tom Gleeson, Juan Castilla-Rho, et al.

Published: 2022-04-08
Subjects: Dynamical Systems, Hydrology, Natural Resources and Conservation, Natural Resources Management and Policy, Nature and Society Relations, Sustainability, Water Resource Management

Groundwater is embedded in social and ecological systems but the complexity of these interactions is not well represented in conventional approaches to study and promote groundwater sustainability. We argue an important shift is necessary in groundwater sustainability thinking: towards prioritizing the functions of groundwater, and the services that make it a critical resource, and away from [...]

Data from the drain: a sensor framework that captures multiple drivers of chronic floods

Adam Gold, Katherine Anarde, Lauren Grimley, et al.

Published: 2022-04-02
Subjects: Earth Sciences, Environmental Monitoring, Environmental Sciences, Hydrology, Oceanography, Oceanography and Atmospheric Sciences and Meteorology, Physical Sciences and Mathematics

Tide gauge records are commonly used as proxies to detect coastal floods and project future flood frequencies. While these proxies clearly show that sea-level rise will increase the frequency of coastal flooding, tide gauges do not account for land-based sources of coastal flooding and therefore likely underestimate the current and future frequency of coastal flooding. Here we present a new [...]

Spatial scale evaluation of forecast flood inundation maps

Helen Hooker, Sarah L Dance, David C Mason, et al.

Published: 2022-03-30
Subjects: Hydrology, Physical Sciences and Mathematics

Flood inundation forecast maps provide an essential tool to disaster management teams for planning and preparation ahead of a flood event in order to mitigate the impacts of flooding on the community. Evaluating the accuracy of forecast flood maps is essential for model development and improving future flood predictions. Conventional, quantitative binary verification measures typically provide a [...]

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