Article
Engineering, Civil
Jana Erdbrugger, Ilja van Meerveld, Jan Seibert, Kevin Bishop
Summary: In humid climates, the relationship between shallow groundwater and surface topography can change over time, particularly when catchment wetness varies. The direction of groundwater gradients can vary by up to 360 degrees over short distances and up to 270 degrees over larger distances. Smoothed digital elevation models represent the groundwater surface better than high-resolution models.
JOURNAL OF HYDROLOGY
(2023)
Article
Environmental Sciences
Margaret A. Wolf, Logan R. Jamison, D. Kip Solomon, Courtenay Strong, Paul D. Brooks
Summary: Seasonally snow-covered catchments in the western United States provide water supply to growing populations through annual snowmelt-driven streamflow and multi-year groundwater recharge. The variability in streamflow is largely influenced by precipitation, but the efficiency of runoff varies greatly among catchments. This study finds that the variability in winter baseflow, an indicator of groundwater storage, shows periodicity of 2-5 and 12-15 years, driven by regional precipitation patterns and snowmelt dynamics. These results highlight the need to consider the influence of antecedent climate on groundwater storage when managing water supplies from snow-covered catchments.
WATER RESOURCES RESEARCH
(2023)
Article
Geosciences, Multidisciplinary
Shive Prakash Rai, Jacob Noble, Dharmaveer Singh, Yadhvir Singh Rawat, Bhishm Kumar
Summary: This study generated robust isotope datasets from 11 locations covering the entire length of the Ganga River, analyzing the controls on spatiotemporal patterns of river water isotopes and identifying the dominance of different hydrological processes. The results show significant spatial and temporal variations in oxygen and hydrogen isotopes in the river water, attributing these differences to factors such as glacier melt, rainfall, and water mixing from tributaries.
Article
Environmental Sciences
N. Masaoka, K. Kosugi, M. Fujimoto
Summary: This study determined the catchment area of bedrock groundwater (BGW) and found its significant influence on surface runoff characteristics. By measuring the BGW catchment area, it provided a more accurate prediction of actual catchment effect and baseflow volume for the watershed.
WATER RESOURCES RESEARCH
(2021)
Article
Water Resources
Dale R. Van Stempvoort, D. Ross MacKay, Pamela Collins, Geoff Koehler
Summary: Nutrient concentrations in riparian groundwater vary, making it difficult to quantify nutrient fluxes from groundwater discharge to headwater streams. This study uses a different method to estimate groundwater discharge and nutrient loading by analyzing stream discharge data and samples collected during a specific period. The findings suggest that groundwater discharge plays an important role in nutrient loading to headwater streams and supports previous studies on the influence of legacy reservoirs on nutrient loads in similar agricultural catchments.
HYDROLOGICAL PROCESSES
(2022)
Article
Geosciences, Multidisciplinary
Lovrenc Pavlin, Borbala Szeles, Peter Strauss, Alfred Paul Blaschke, Guenter Bloeschl
Summary: This study investigates the spatial and temporal patterns of similarity between shallow groundwater and soil moisture dynamics and streamflow dynamics in a small agricultural headwater catchment. The results show that topographical factors play a significant role in the similarity between groundwater and streamflow, while soil moisture dynamics exhibit high similarity to streamflow with no clear spatial pattern. Additionally, groundwater connectivity to the stream is higher on a seasonal scale compared to an event scale.
HYDROLOGY AND EARTH SYSTEM SCIENCES
(2021)
Article
Environmental Sciences
Landon J. S. Halloran, Jeremy Millwater, Daniel Hunkeler, Marie Arnoux
Summary: Climate change has a pronounced impact on alpine water resources and a deeper understanding of the role of groundwater is vital for their future. A study was conducted on an alpine catchment to investigate the effects of climate change on groundwater discharge, revealing a decrease in discharge, an increase in no-flow periods, and changes to the timing of discharge patterns.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Water Resources
L. T. Modie, P. K. Kenabatho, M. Stephens, T. Mosekiemang
Summary: The study focused on assessing the interaction between groundwater (GW) and surface water (SW) in the Notwane River Catchment (NRC). The stable isotopic composition and water chemistry of both GW and SW were analyzed, revealing similar characteristics. The study also found that higher ground relief and/or elevation led to lower concentrations of chloride ions and electrical conductivity. The data suggested the presence of active groundwater recharge sites along the river, which could be responsible for aquifer recharge during heavy rainfall. Furthermore, the GW-SW interactions in the NRC were found to be influenced by factors such as differences in water levels between the river and adjacent groundwater table, as well as geological formations like faults and karsts.
JOURNAL OF HYDROLOGY-REGIONAL STUDIES
(2022)
Article
Geosciences, Multidisciplinary
Ya-Ni Yan, Jun-Wen Zhang, Wei Zhang, Gui-Shan Zhang, Jian-Yang Guo, Dong Zhang, Jie Wu, Zhi-Qi Zhao
Summary: Characterization of spatiotemporal variation of stable isotopes delta O-18 and delta D in surface water in the Yarlung Tsangpo River (YTR) Basin revealed that river water mainly originates from precipitation, with temporal variations influenced by season and spatial variations increasing gradually along with altitude and geographic position changes in tributaries.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Engineering, Civil
Ayumi Sugiyama, Maki Tsujimura, Yuichi Onda, Koichi Sakakibara, Kosuke Nagano, Shinjiro Yano, Kazuyo Nagaosa, Kenji Kato
Summary: In this study, the spatiotemporal distribution of prokaryotic communities in groundwater and spring water was investigated to examine the relationship between the groundwater flow system and prokaryotic dynamics. The results showed that as the residence time of groundwater increased, the density of prokaryotes in the shallow subsurface also increased, whereas that of the prokaryotes in the deep subsurface decreased.
JOURNAL OF HYDROLOGY
(2023)
Article
Water Resources
Dale R. Van Stempvoort, D. Ross MacKay, Geoff Koehler, Pamela Collins, Susan J. Brown
Summary: This study establishes a well-defined and comprehensive conceptual model of the subsurface hydrology in TDADC, with seven key concepts being tested in a rural area in southern Ontario, Canada using data collection involving chemical and isotopes tracers in various water samples. The model covers the role of groundwater in baseflow, the dominance of 'pre-event' water in stormflow, and the importance of both macropores and matrix, among other factors.
HYDROLOGICAL PROCESSES
(2021)
Article
Water Resources
Enrico Bonanno, Guenter Bloeschl, Julian Klaus
Summary: Understanding the dynamics of near-stream groundwater is crucial for predicting connectivity between hillslopes and streams, streamflow generation, and hydrologic controls of streamwater quality. Factors such as precipitation characteristics, subsurface structure, and proximity to the stream channel influence near-stream groundwater dynamics, which vary with hydrologic conditions. Near-stream groundwater flows uniformly towards the stream channel when hydrologically connected to upslope groundwater, but interruptions in upslope inflow can cause flow reversals towards the footslopes.
HYDROLOGICAL PROCESSES
(2021)
Article
Environmental Sciences
Seiya Hanamoto, Ryoko Yamamoto-Ikemoto, Hiroaki Tanaka
Summary: This study aimed to understand the predictability of mass flows of veterinary drugs in Asian catchments. The results showed that mass flows of two human and livestock drugs were stable, while those of veterinary drugs fluctuated widely. These findings emphasize the need to consider the spatial and temporal distribution of veterinary drugs in their management.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Daniel A. Petrash, Pavel Kram, Katherine X. Perez-Rivera, Frantisek Buzek, Jan Curik, Frantisek Veselovsky, Martin Novak
Summary: Soil solution chemistry is influenced by the mineralogy and organic matter properties of soil. Different lithologies in a catchment area can affect soil cation exchange capacities and solute transport. The study used lysimeters to evaluate solute transport in the topsoil and subsoil of three catchments with contrasting lithology. The hydrochemical data from lysimeters can be used to assess legacy subsoil pollution.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Meteorology & Atmospheric Sciences
Hairu Mao, Guangcai Wang, Zheming Shi, Fu Liao, Yang Xue
Summary: This study used stable isotopes of precipitation and groundwater to investigate the spatiotemporal variation of groundwater recharge in the lower reaches of the Poyang Lake Basin in China. The results showed clear seasonal variations in isotopic values of precipitation, which influenced the stable isotopes of groundwater.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2021)
Article
Water Resources
Ida K. Westerberg, Anna E. Sikorska-Senoner, Daniel Viviroli, Marc Vis, Jan Seibert
Summary: This study investigates the influence of discharge data uncertainty on hydrological model calibration and provides recommendations on methods to account for data uncertainty. Testing different representations in three Swiss catchments, the research demonstrates that using a new objective function and empirical or triangular distributions of discharge data uncertainty can improve calibration results.
HYDROLOGICAL SCIENCES JOURNAL
(2022)
Article
Geosciences, Multidisciplinary
Markus Egli, Guido Wiesenberg, Jens Leifeld, Holger Gartner, Jan Seibert, Claudia Roosli, Vladimir Wingate, Wasja Dollenmeier, Pascal Griffel, Jeannine Suremann, Jan Weber, Mergime Zyberaj, Alessandra Musso
Summary: The study explores the dynamics of the landscape in the Three Lakes Region of Western Switzerland, with a particular focus on the formation and degradation of mires. Over the past 2000 years, hydrodynamic and geomorphic activities have increased, leading to severe degradation of moorlands, with mean annual carbon losses of 4.9 t ha(-1) in agricultural land and 2.4 t ha(-1) in forests. Forests can limit but not completely stop the degradation of mires, suggesting that agroforestry may be a potential alternative land-use system for sensitive areas in the future.
SWISS JOURNAL OF GEOSCIENCES
(2021)
Article
Environmental Sciences
Li Li, Pamela L. Sullivan, Paolo Benettin, Olaf A. Cirpka, Kevin Bishop, Susan L. Brantley, Julia L. A. Knapp, Ilja van Meerveld, Andrea Rinaldo, Jan Seibert, Hang Wen, James W. Kirchner
Summary: Headwater catchments are fundamental units connecting land and ocean, with hydrological flow and biogeochemical processes intricately linked yet lacking integration in their scientific development. The absence of integrated theories hinders understanding and forecasting the future of the Critical Zone under human and climate-induced perturbations.
WILEY INTERDISCIPLINARY REVIEWS-WATER
(2021)
Article
Water Resources
Jeffrey J. McDonnell, Chris Gabrielli, Ali Ameli, Jagath Ekanayake, Fabrizio Fenicia, Jim Freer, Chris Graham, Brian McGlynn, Uwe Morgenstern, Alain Pietroniro, Takahiro Sayama, Jan Seibert, Mike Stewart, Kellie Vache, Markus Weiler, Ross Woods
HYDROLOGICAL PROCESSES
(2021)
Article
Water Resources
Manfred Stahli, Jan Seibert, James W. Kirchner, Jana von Freyberg, Ilja van Meerveld
Summary: Research in the Alptal valley has evolved from focusing on floods and forest management to studying geomorphological processes, biogeochemical and ecohydrological processes, and the impacts of climate change on water supply and runoff generation. Hydrometeorological time series from the past 50 years show substantial interannual variability, minimal long-term trends, except for the increase in mean annual air temperature and earlier snowmelt. The most evident hydrological trends in the Alptal valley are related to late spring changes in snow cover duration.
HYDROLOGICAL PROCESSES
(2021)
Article
Engineering, Civil
Sandra Pool, Jan Seibert
Summary: This study investigates the potential of short measurement campaigns for hydrological model calibration in catchments with limited observations. Results indicate that point discharge observations are valuable for constraining annual water balance and event-scale flow response, while water level observations help improve the accuracy of simulated daily flow dynamics. Informative discharge sampling dates are typically clustered during high streamflow seasons, regardless of whether they are selected using active learning or expert knowledge.
JOURNAL OF HYDROLOGY
(2021)
Article
Water Resources
Fernando Nardi, Christophe Cudennec, Tommaso Abrate, Candice Allouch, Antonio Annis, Thaine Assumpcao, Alice H. Aubert, Dominique Berod, Alessio Maria Braccini, Wouter Buytaert, Antara Dasgupta, David M. Hannah, Maurizio Mazzoleni, Maria J. Polo, Oystein Saebo, Jan Seibert, Flavia Tauro, Florian Teichert, Rita Teutonico, Stefan Uhlenbrook, Cristina Wahrmann Vargas, Salvatore Grimaldi
Summary: This study highlights the importance of citizen science in addressing water issues, advocating for collaboration between hydrological, computer, and social sciences, and identifying shortcomings in policy and decision-making.
HYDROLOGICAL SCIENCES JOURNAL
(2022)
Article
Water Resources
Shirin Karimi, Jan Seibert, Hjalmar Laudon
Summary: This study evaluates the performance of three different HBV model structures on 14 heterogeneous boreal catchments, showing that the three-bucket structure performs better in larger catchments while a single reservoir structure is sufficient for lake-influenced catchments with lower elevation. Although estimates of mean catchment storage varied between different model structures, the ranking between catchments largely agreed across the different structures.
HYDROLOGY RESEARCH
(2022)
Article
Water Resources
Carolina Natel de Moura, Jan Seibert, Daniel Henrique Marco Detzel
Summary: This study investigated the ability of the long short-term memory (LSTM) model to predict daily discharge under changing climate conditions in six snow-influenced catchments in Switzerland. The results showed that the LSTM had a better fit than the HBV model during calibration, but its performance dropped considerably during validation. However, using longer time series improved the robustness of the LSTM model. Overall, the HBV model was found to be less sensitive to contrasting climate conditions compared to the LSTM.
HYDROLOGY RESEARCH
(2022)
Article
Environmental Sciences
Franziska M. Schwarzenbach, Jan Seibert, H. J. (Ilja) van Meerveld
Summary: This paper discusses the application experience of a smartphone-based self-guided excursion in a university hydrology and climatology introductory course. The excursion received positive feedback from students and was used again in 2021, with plans for future use. The paper also provides recommendations and ideas that could be useful for similar excursions at other universities.
FRONTIERS IN ENVIRONMENTAL SCIENCE
(2022)
Article
Water Resources
Benjamin M. C. Fischer, Laura Morillas, Johanna Rojas Conejo, Ricardo Sanchez-Murillo, Andrea Suarez Serrano, Jay Frentress, Chih-Hsin Cheng, Monica Garcia, Stefano Manzoni, Mark S. Johnson, Steve W. Lyon
Summary: Amending soils with biochar can increase water availability and drought tolerance for plants, but it is not a substitute for other water management strategies.
HYDROLOGICAL PROCESSES
(2022)
Article
Geosciences, Multidisciplinary
Romane Berthelin, Tunde Olarinoye, Michael Rinderer, Matias Mudarra, Dominic Demand, Mirjam Scheller, Andreas Hartmann
Summary: Understanding groundwater recharge processes is crucial for sustainable water resource management. Traditional experimental approaches often focus on analysing the response of the aquifer, while few investigate the actual recharge processes at the surface. This study developed a method based on soil moisture measurements to estimate karst groundwater recharge, which performed well in predicting recharge during rainfall events and simulating average annual recharge volume despite variations between years.
HYDROLOGY AND EARTH SYSTEM SCIENCES
(2023)
Article
Geosciences, Multidisciplinary
Daniel Viviroli, Anna E. Sikorska-Senoner, Guillaume Evin, Maria Staudinger, Martina Kauzlaric, Jeremy Chardon, Anne-Catherine Favre, Benoit Hingray, Gilles Nicolet, Damien Raynaud, Jan Seibert, Rolf Weingartner, Calvin Whealton
Summary: This study explores the feasibility and reliability of the continuous simulation approach for estimating rare floods at multiple sites in a large river basin. The research shows that this approach, which links flood estimation with physical processes, is able to accurately represent meteorological and hydrological observations and provide meaningful information on low-probability floods.
NATURAL HAZARDS AND EARTH SYSTEM SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
Jan Seibert, Sten Bergstrom
Summary: Hydrological catchment models are important tools for water resource management planning. Although computer capabilities have greatly increased, some relatively simple models are still widely used. The HBV model, first applied in Sweden 50 years ago, is a typical example of a conceptual catchment model. The history of model development, from consideration of different model structures to studies using numerous catchments and cloud computing facilities, is described, and the wide range of model applications is discussed.
HYDROLOGY AND EARTH SYSTEM SCIENCES
(2022)
Article
Ecology
Michael Rinderer, Jaane Krueger, Friederike Lang, Heike Puhlmann, Markus Weiler
Summary: The research highlights the impact of large rainfall events on phosphorus concentration in soil solution, showing that vertical subsurface storm flow has higher phosphorus concentration compared to lateral subsurface storm flow. The study suggests that phosphorus in soil solution is replenished quickly from mineral or organic sources, indicating the importance of phosphorus translocation from forest floor to mineral soil in ecosystems with low phosphorus stocks.