Article
Geography, Physical
Miles J. Clark, Georgina L. Bennett, Sandra E. Ryan-Burkett, David A. Sear, Aldina M. A. Franco
Summary: This study aims to investigate and model the influence of large wood on grain-scale bedload transport. Through tracer studies and linear mixed modeling in an alpine mountain stream, it was found that large wood can reduce the probability of entrainment and transport distances of tracers. This study demonstrates the role of large wood in influencing bedload transport in alpine stream environments, with implications for both natural and anthropogenic addition of wood debris in fluvial environments.
EARTH SURFACE PROCESSES AND LANDFORMS
(2022)
Review
Geography, Physical
Frederic Liebault, Herve Piegay, Mathieu Cassel, Fanny Arnaud
Summary: This paper provides a review of field and laboratory experiments using radio frequency identification (RFID) tags for bedload tracing in rivers. The meta-analysis of data from 459 tracer surveys at 125 study sites demonstrates that RFID tracers have improved our understanding of sediment transport in fluvial environments with rapid bedload dispersion. Recent methodological developments using active ultra-high frequency RFID tags enable efficient bedload tracing experiments in various types of river channels.
EARTH SURFACE PROCESSES AND LANDFORMS
(2023)
Article
Computer Science, Information Systems
Han Ding, Jinsong Han, Cui Zhao, Ge Wang, Wei Xi, Zhiping Jiang, Jizhong Zhao
Summary: This study introduces a physical-layer tag protection framework named Arbitrator2.0 to address new security attacks faced by RFID technology. By passively listening on RF channels and working as a normal reader, Arbitrator2.0 effectively reduces unauthorized access attacks and prevents eavesdropping.
IEEE TRANSACTIONS ON MOBILE COMPUTING
(2022)
Article
Geography, Physical
Bruce J. MacVicar, Elli Papangelakis
Summary: Bedload particle tracking is a useful technique for studying sediment dynamics in rivers, but missing tracers in field surveys can lead to biased results. This study shows that including missing tracers can improve our understanding of sediment dispersion, with recommended strategies for incorporating this information. The results highlight the importance of considering all available data to enhance the accuracy of sediment displacement metrics in river studies.
EARTH SURFACE PROCESSES AND LANDFORMS
(2022)
Article
Multidisciplinary Sciences
Basil Gomez, Philip J. Soar
Summary: This passage discusses the variability of bedload transport and the correlation between the transport rate and stream power. The authors propose a simple mathematical expression to describe the efficiency of bedload transport and acknowledge the different transport patterns that can occur under similar hydraulic conditions. They suggest that efforts in the field should focus on characterizing the sizes available on the bed between floods.
PROCEEDINGS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2023)
Article
Engineering, Electrical & Electronic
Fabio Bernardini, Alice Buffi, Daniele Fontanelli, David Macii, Valerio Magnago, Mirko Marracci, Andrea Motroni, Paolo Nepa, Bernardo Tellini
Summary: This article introduces a synthetic aperture radar (SAR) localization method for indoor positioning of ultrahigh-frequency (UHF)-radio frequency identification (RFID) tags, improving accuracy by combining phase data from multiple paths. Various combination approaches are investigated to enhance localization performance. The proposed method is validated through experimental analysis in an indoor scenario.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2021)
Article
Engineering, Civil
ZhiPeng Li, Dong Chen, HongGuang Sun, ZhenZhu Meng, Yong Zhang, Renat T. Sibatov
Summary: This study simplifies the bedload transport process to a mass-spring-damper system to describe cluster formation, and characterizes the spatial heterogeneity of individual clusters using the Hausdorff-Besicovitch dimension. The trapping of sediment particles during bedload transport on a heterogeneous gravel bed is quantified using a random walk approach and the birth-death emigration-immigration Markov process. Additionally, sub-diffusive dynamics of bedload transport is modeled using the Langevin equation, with a connection to a macroscopic deterministic equation based on continuous time random walk theory.
JOURNAL OF HYDROLOGY
(2021)
Article
Environmental Sciences
E. Papangelakis, B. J. MacVicar, A. F. Montakhab, P. Ashmore
Summary: The quantification of bedload sediment transport in rivers can be done through the statistics of individual particle displacements. Previous research suggests a linear relation between flood energy and the average travel distance of bedload particles, but a consistent model for different rivers has not been developed. In this study, a predictive relation is developed based on data collected from three watersheds with contrasting hydrologic regimes, and validated using additional data from two different rivers. The results show that the mean travel distances of surface particles can be reliably predicted using either cumulative discharge or stream power exceeding the mobilization threshold.
WATER RESOURCES RESEARCH
(2022)
Article
Geography, Physical
Frederic Liebault, Jonathan B. Laronne, Sebastien Klotz, Coraline Bel
Summary: This study investigates the effect of sediment pulses originating from hillslopes on bedload response to flow conditions using two bedload datasets recorded in a small Mediterranean badland catchment. The results reveal seasonal counterclockwise bedload hysteresis, which can be attributed to yearly sediment pulses reaching the catchment outlet during autumn and early winter. These findings suggest that seasonal bedload pulses may be typical in small alpine catchments with active gully erosion on bedrock sensitive to frost-cracking processes.
Article
Engineering, Electrical & Electronic
Andrea Motroni, Alice Buffi, Paolo Nepa, Bernardo Tellini
Summary: This article introduces a novel sensor-fusion method for indoor vehicle tracking, combining the phase of UHF-RFID reference tags signals with data from low-cost kinematic sensors, with an advantageous reduction of reference-tag spatial density through a synthetic-array approach. Experimental results demonstrate accurate vehicle tracking with only two reference tags in a relatively small area, showcasing the method's capability without the need for calibration procedures and using commercial off-the-shelf hardware.
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
(2021)
Article
Chemistry, Analytical
Jawad Yousaf, Eqab Almajali, Mahmoud El Najjar, Ahmed Amir, Amir Altaf, Manzoor Elahi, Saqer Saleh Alja'afreh, Hatem Rmili
Summary: This work presents the design and analysis of a newly developed reconfigurable, flexible, inexpensive, optically-controlled, and fully printable chipless Arabic alphabet-based RFID tags. Each tag has its own unique electromagnetic signature, which can be used for the detection and recognition of all Arabic alphabet tags. The study also discusses the effect of font type and size on the electromagnetic signature of the tags, which has not been explored before.
Article
Engineering, Electrical & Electronic
Florian Muralter, Laura Arjona, Hugo Landaluce, Asier Perallos
Summary: This research introduces a passive, modular, computational ultra high frequency radio frequency identification (RFID) research platform, consisting of a software defined radio (SDR) reader and a modular UHF RFID tag. The tag can be subdivided into various modules optimized for easy connectivity, with experimental results confirming the platform's value in designing novel UHF RFID solutions.
IEEE SENSORS JOURNAL
(2021)
Article
Mathematics, Applied
J. Garres-Diaz, E. D. Fernandez-Nieto, G. Narbona-Reina
Summary: This work proposes efficient semi-implicit methods for sediment bedload transport models with gravitational effects under subcritical regimes. Several families of models with gravitational effects are presented and rewritten under a general formulation, allowing the application of the semi-implicit method. In the numerical tests, the focus is on a generalization of the Ashida-Michiue model, which includes the gradient of both the bedload and the fluid surface. Analytical steady state solutions (both lake at rest and non-vanishing velocity) are deduced and approximated using the proposed scheme. In all the presented tests, the computational efforts are notably reduced without compromising the accuracy of the results.
APPLIED MATHEMATICS AND COMPUTATION
(2022)
Article
Geography, Physical
Mathieu Cassel, Oldrich Navratil, Frederic Liebault, Alain Recking, Daniel Vazquez-Tarrio, Maarten Bakker, Sebastien Zanker, Clement Misset, Herve Piegay
Summary: This study combined RFID technology and geophone monitoring stations to link the virtual velocity of tracers with seismic activity, hydraulic forcing, and particle properties. The results showed that seismic activity best explained the observed variance of the virtual velocity of particles (81%), compared to discharge (58%) and stream power (63%). Combining control variables in an empirical model, the model explained 89% of the variance and allowed quantification of the portions explained by hydraulic forcing, geophonic activity, and tracked particles. These results demonstrate the high potential of these combined monitoring techniques for investigating bedload processes in rivers of different morphologies at different spatiotemporal scales.
EARTH SURFACE PROCESSES AND LANDFORMS
(2023)
Review
Biodiversity Conservation
Maria P. Ribas, Paula Alonso-Almorox, Johan Espunyes, Albert Martinez-Silvestre, Oscar Cabezon
Summary: The use of PIT tags in urodeles for population and disease ecology studies is popular, but lack of reporting and standardization of tagging procedures and unknown predictors of tag loss pose challenges. This study analyzed existing literature and experimentally evaluated tagging methods, finding a lack of reporting and standardization, as well as no significant predictors of tag loss.
ECOLOGICAL INDICATORS
(2022)
Article
Geography, Physical
Alexandra Carriere, Caroline Le Bouteiller, Gregory E. Tucker, Sebastien Klotz, Mohamed Naaim
EARTH SURFACE PROCESSES AND LANDFORMS
(2020)
Article
Geosciences, Multidisciplinary
Matthew W. Rossi, Robert S. Anderson, Suzanne P. Anderson, Gregory E. Tucker
GEOPHYSICAL RESEARCH LETTERS
(2020)
Article
Geosciences, Multidisciplinary
Gregory E. Tucker, Daniel E. J. Hobley, Scott W. McCoy, Will T. Struble
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2020)
Article
Geosciences, Multidisciplinary
Katherine R. Barnhart, Gregory E. Tucker, Sandra G. Doty, Charles M. Shobe, Rachel C. Glade, Matthew W. Rossi, Mary C. Hill
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2020)
Article
Geosciences, Multidisciplinary
Charles M. Shobe, Georgina L. Bennett, Gregory E. Tucker, Kevin Roback, Scott R. Miller, Joshua J. Roering
Summary: The study investigates how different rock types influence landscape response to tectonic forces through boulder delivery to rivers. Channels in the Franciscan melange are steeper than in the Coastal Belt, suggesting a potential influence of boulder delivery on channel steepness. The observed differences in channel steepness between lithologies may be partially explained by the modeled influence of boulder delivery, indicating a possible retardation of landscape adjustment to tectonic forces.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2021)
Article
Geosciences, Multidisciplinary
V Godard, G. E. Tucker
Summary: Assessing the sensitivity of rivers and hillslopes to external forcing is crucial for understanding landscape evolution, with hillslopes modulating landscape dynamics in response to environmental changes.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Geography, Physical
Nadine G. Reitman, Karl J. Mueller, Gregory E. Tucker
Summary: In this study, the effects of interpretation error on apparent short-wavelength variability in surface slip distributions were examined. The results show that both inherent variability in the rupture process and interpretation error contribute to the observed variability in slip distributions.
EARTH SURFACE PROCESSES AND LANDFORMS
(2022)
Article
Geosciences, Multidisciplinary
David G. Litwin, Gregory E. Tucker, Katherine R. Barnhart, Ciaran J. Harman
Summary: This study developed a new model to explore how runoff generation affects long-term catchment evolution, focusing on hydrologic processes dominating in humid climates. The results showed the interplay between surface and subsurface water, with implications on landscape evolution and runoff generation.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2022)
Article
Geosciences, Multidisciplinary
Benjamin Campforts, Charles M. Shobe, Irina Overeem, Gregory E. Tucker
Summary: This article investigates the impact of bedrock landslides on topography and sediment dynamics, highlighting the significance of interactions between landslides and sediment dynamics for landscape evolution and response to environmental change.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2022)
Editorial Material
Multidisciplinary Sciences
C. Michael Barton, Allen Lee, Marco A. Janssen, Sander van der Leeuw, Gregory E. Tucker, Cheryl Porter, Joshua Greenberg, Laura Swantek, Karin Frank, Min Chenk, H. R. Albert Jagers
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2022)
Editorial Material
Geosciences, Multidisciplinary
David G. Litwin, Gregory E. Tucker, Katherine R. Barnhart, Ciaran J. Harman
Summary: This article discusses the importance of domain size in a simple landscape evolution model and shows that it has little impact on the results in the examined parameter space. The authors also demonstrate that using landscape evolution process rates rather than domain size for nondimensionalization allows for a clearer understanding of the intrinsic features of the results.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2022)
Article
Environmental Sciences
Sai S. Nudurupati, Erkan Istanbulluoglu, Gregory E. Tucker, Nicole M. Gasparini, Daniel E. J. Hobley, Eric W. H. Hutton, Katherine R. Barnhart, Jordan M. Adams
Summary: Projecting the response of arid and semi-arid ecosystems to global change involves integrating various analytical and numerical models. This study used the Landlab earth surface modeling toolkit to investigate the controls of exogenous drivers and endogenous grass-fire feedback mechanisms in New Mexico. The simulations showed that shrubs occupy cooler slopes in dry conditions and shift to warmer slopes as regional moisture increases. The expansion of woody plant encroachment is predicted to occur in three phases, with the second phase requiring the removal of positive grass-fire feedback by grazing or fire suppression.
WATER RESOURCES RESEARCH
(2023)
Article
Geosciences, Multidisciplinary
Gregory E. Tucker, Eric W. H. Hutton, Mark D. Piper, Benjamin Campforts, Tian Gan, Katherine R. Barnhart, Albert J. Kettner, Irina Overeem, Scott D. Peckham, Lynn McCready, Jaia Syvitski
Summary: Computational modeling plays a unique role in Earth and environmental sciences, serving as both scientific technology and infrastructure and as containers of the scientific community's understanding. To promote a flexible, interoperable, and ever-improving research software ecosystem, the Community Surface Dynamics Modeling System (CSDMS) has developed design principles, protocols, and tools.
GEOSCIENTIFIC MODEL DEVELOPMENT
(2022)
Article
Geography, Physical
Katherine R. Barnhart, Eric W. H. Hutton, Gregory E. Tucker, Nicole M. Gasparini, Erkan Istanbulluoglu, Daniel E. J. Hobley, Nathan J. Lyons, Margaux Mouchene, Sai Siddhartha Nudurupati, Jordan M. Adams, Christina Bandaragoda
EARTH SURFACE DYNAMICS
(2020)
Article
Geography, Physical
Alison R. Duvall, Sarah A. Harbert, Phaedra Upton, Gregory E. Tucker, Rebecca M. Flowers, Camille Collett
EARTH SURFACE DYNAMICS
(2020)