Article
Multidisciplinary Sciences
Stephan C. Toby, Robert A. Duller, Silvio De Angelis, Kyle M. Straub
Summary: A new quantitative tool for assessing environmental signal propagation and transfer in sediment routing systems is introduced, providing broad applicability and usefulness in the field. The study develops a framework and workflow to estimate autogenic thresholds in ancient sediment routing systems, which can be approximated using readily attainable measurements from field systems, overcoming the low temporal resolution of strata. This work demonstrates the importance of accessing short-term system dynamics from ancient sediment routing systems and setting morphodynamic limits on environmental signal propagation across ancient landscapes and into strata.
NATURE COMMUNICATIONS
(2022)
Article
Geosciences, Multidisciplinary
Katherine A. Chapman, Rebecca J. Best, M. Elliot Smith, Erich R. Mueller, Paul E. Grams, Roderic A. Parnell
Summary: The completion of Glen Canyon Dam in 1963 changed the sediment delivery dynamics and flood control in the Colorado River basin, leading to a reliance on controlled dam-release floods for managing the river ecosystem in Grand Canyon National Park. The study evaluates the composition of flood deposits and suggests that continued effectiveness of controlled floods for sandbar maintenance depends on consistent sand inputs from the Paria River.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2021)
Article
Geography, Physical
Cecilia Cullen, Alison M. Anders, Jingtao Lai, Jennifer L. Druhan
Summary: This study investigates how groundwater transfer across subtle surface water divides facilitates channel network expansion in low-relief post-glacial areas. The research found that channel growth is significantly faster in routing cases than no-routing cases with identical groundwater fractions, and the fastest channel expansion occurs when around 30% of the total water enters the system.
EARTH SURFACE PROCESSES AND LANDFORMS
(2022)
Article
Multidisciplinary Sciences
Ci-Jian Yang, Jens M. Turowski, Niels Hovius, Jiun-Chuan Lin, Kuo-Jen Chang
Summary: The study found that individual rainfall events in the badlands of SW Taiwan caused quantifiable landscape changes, with typhoon rain reducing hillslope gradients and lower-intensity precipitation either steepening or flattening the landscape. The observed steep topography may be due to the 2016 earthquake.
NATURE COMMUNICATIONS
(2021)
Article
Geosciences, Multidisciplinary
Hongfei Zhao, Yunhong Lin, Jie Zhou, Claudio O. Delang, Hongming He
Summary: The study reconstructs the spatial and temporal distribution of precipitation and vegetation cover in the Yellow River basin during the Holocene, and simulates soil erosion and sediment deposition processes. The findings demonstrate the impacts of climate change and human activities on the evolution of the fluvial landscape.
Article
Geography, Physical
Bastian Morales, Elizabet Lizama, Marcelo Somos-Valenzuela, Diego Rivera, Ningshen Chen
Summary: Earthquakes can shape mountainous landscapes through landslides, which then affect the distribution of sediment by rivers. This study focuses on the effects of co-seismic landslides and sedimentary dynamics on the evolution of the Andes in Chilean Patagonia. By simulating seismic cycles and parameterizing landscape features, the researchers find that landslides play a significant role in landscape evolution and can impact fluvial dynamics.
Article
Geosciences, Multidisciplinary
X. P. Yuan, R. Jiao, G. Dupont-Nivet, X. Shen
Summary: The study reproduces the uplift history of the southeastern Tibetan Plateau using a 2D landscape evolution model, and compares the results with existing data to reveal the changes in plateau elevation.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Environmental Sciences
Tristan Salles, Claire Mallard, Laurent Husson, Sabin Zahirovic, Anta-Clarisse Sarr, Pierre Sepulchre
Summary: Physiographic changes, such as river catchment drainage reorganisations, played an important role in Quaternary species diversification in Sundaland, Southeast Asia, according to simulations using combined landscape evolution and connectivity models. The changes have fragmented the environment into multiple habitats connected by migratory corridors. These results support the theory that rapidly evolving physiography could foster Quaternary biodiversification across Southeast Asia.
COMMUNICATIONS EARTH & ENVIRONMENT
(2021)
Article
Multidisciplinary Sciences
Tristan Salles, Laurent Husson, Patrice Rey, Claire Mallard, Sabin Zahirovic, Beatriz Hadler Boggiani, Nicolas Coltice, Maelis Arnould
Summary: Our study utilizes a global-scale landscape evolution model to reconstruct past landscapes and geological processes, incorporating paleoelevation and paleoclimate reconstructions. This model provides continuous quantification of critical metrics for understanding Earth's system, such as global physiography and sediment flux. We reevaluate the role of surface processes in controlling sediment delivery to the oceans and identify stable sedimentation rates during the Cenozoic period with distinct phases of sediment transfer from land to marine basins. Our simulation serves as a tool for identifying inconsistencies in previous interpretations of the geological record and available paleoelevation and paleoclimatic reconstructions.
Article
Environmental Sciences
Milad Hooshyar, Amilcare Porporato
Summary: Landscape evolution models commonly use coupled partial differential equations to model temporal dynamics of the land surface, accounting for sediment and water balance. The average sediment budget equation highlights the influence of curvature and surface divergence/convergence on erosion rate. A Reynolds-type averaging of the equations reveals a decomposition of erosion into unchannelized and channelized components, with the latter resembling Reynolds stress in fluid turbulence and indicating surface channelization statistical features.
WATER RESOURCES RESEARCH
(2021)
Article
Green & Sustainable Science & Technology
Tarate Suryakant Bajirao, Pravendra Kumar, Manish Kumar, Ahmed Elbeltagi, Alban Kuriqi
Summary: This study analyzed the validity of simple and wavelet-coupled Artificial Intelligence models for daily Suspended Sediment estimation in the Koyna River basin of India. The results showed that data pre-processing using wavelet transform significantly improves the model's predictive efficiency and reliability, with the Coiflet wavelet-coupled ANFIS model performing the best. Sensitivity analysis revealed the importance of the previous one-day SSC as the most crucial input variable for daily SSC estimation in the Koyna River basin.
Article
Geosciences, Multidisciplinary
Benjamin T. Cardenas, Kaitlyn Stacey
Summary: Fluvial channel belts on Mars are exposed in a unique way, with steep slopes, shallow benches, and truncated ridges. This exposure is caused by preferential erosion of floodplain strata by wind, which is steered by crater topography.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Geosciences, Multidisciplinary
Shashank Kumar Anand, Sara Bonetti, Carlo Camporeale, Amilcare Porporato
Summary: This article presents a linear stability theory for incipient valley formation in mountainous landscapes, and validates the theory through numerical simulations and topographic data.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2022)
Article
Environmental Sciences
Alex J. Fields, Joydeep Bhattacharjee, Nirmalya Chatterjee
Summary: This study examines the impacts of four hydroelectric dams on the Teesta River in India, showing significant changes in riparian ecology and fluvial morphology. By mapping bathymetry and analyzing land cover changes, it is revealed that the dams have caused a portion of the river to become nearly stagnant and led to substantial sediment deposition. The findings serve as a crucial baseline for future studies and will influence policy regarding ecosystem management in similar mountainous river basins.
ENVIRONMENTAL MONITORING AND ASSESSMENT
(2021)
Article
Ecology
Thomas Perrot, Adrien Rusch, Camille Coux, Sabrina Gaba, Vincent Bretagnolle
Summary: Increasing the proportion of grasslands in farmland can enhance seed and aphid predation rates, while the distance to the nearest grassland has no significant effect. Additionally, forest fragments and the proportion of organic farming can also impact the predation rates in cereal fields. Maintaining key semi-natural habitats is crucial for natural pest control and supporting food production in agricultural landscapes.
FRONTIERS IN ECOLOGY AND EVOLUTION
(2021)
Article
Geochemistry & Geophysics
V. Regard, M. Premaillon, T. J. B. Dewez, S. Carretier, C. Jeandel, Y. Godderis, S. Bonnet, J. Schott, K. Pedoja, J. Martinod, J. Viers, S. Fabre
Summary: Current assessments assume that rivers provide most of the sediment flux to the ocean, with glacially-derived sediments and airborne dust making up the remaining portion. However, this study shows that the contribution from rock coasts has been greatly underestimated, with sediment supply from cliffs being three times less than river discharge in Europe.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Geochemistry & Geophysics
Lorenz Wolf, Ritske S. Huismans, Delphine Rouby, Robert L. Gawthorpe, Sebastian G. Wolf
Summary: This study investigates the modeling of continental rifting and finds that the degree of strain localization drives the structural evolution of rifts. The sediment flux correlates with the degree of strain localization and can serve as a proxy for the evolution of topography.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2022)
Article
Geosciences, Multidisciplinary
Pierre Maffre, Yves Godderis, Alexandre Pohl, Yannick Donnadieu, Sebastien Carretier, Guillaume Le Hir
Summary: The study investigates the impact of vascular plant colonization on physical erosion and chemical weathering on continents during the Devonian. The researchers use mathematical models to simulate the response of the global carbon and alkalinity cycles and climate to the colonization phase. The findings show that the pathways of colonization have a significant impact on CO2 history, leading to different patterns of atmospheric CO2 evolution.
AMERICAN JOURNAL OF SCIENCE
(2022)
Article
Geography, Physical
Anne Guyez, Stephane Bonnet, Tony Reimann, Sebastien Carretier, Jakob Wallinga
Summary: SG-pIRIR is a method for dating Quaternary deposits, particularly suitable for fluvial deposits that cannot be dated by conventional quartz optically stimulated luminescence dating. It can be used to reconstruct sediment sources and pathways.
EARTH SURFACE PROCESSES AND LANDFORMS
(2022)
Article
Geosciences, Multidisciplinary
S. Carretier, F. Audemard, L. Audin, S. Hidalgo, J-l. Le Pennec, H. Mora, J-m. Nocquet, P. Samaniego
Summary: The International Symposium on Andean Geodynamics (ISAG) is an international conference held every 3-4 years in different European cities to review the state of knowledge in geosciences on the Andes. In 2019, the symposium took place in Ecuador for the first time and featured papers on topics such as tectonics and volcanism.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2022)
Article
Geochemistry & Geophysics
Cheikh Ahmadou Bamba Niang, David Baratoux, Pierre Rochette, Regis Braucher, Wolf Uwe Reimold, Philippe Lambert, Dinna Pathe Diallo, Vincent Regard, Sebastien Carretier, Mark W. Jessell, Gayane Faye, Christian Koeberl
Summary: The Bosumtwi impact structure in Ghana is a remarkable and valuable natural laboratory to study erosion and weathering processes. The study reveals the impacts of these processes on the structure's morphology and provides insights into the factors controlling erosion rates. The circular potassium anomalies observed in radiometric surveys in tropical regions could potentially indicate the presence of impact structures.
METEORITICS & PLANETARY SCIENCE
(2022)
Article
Geochemistry & Geophysics
X. P. Yuan, L. Guerit, J. Braun, D. Rouby, C. M. Shobe
Summary: Fluvial deposits provide the best-preserved geomorphic record of past climate change, but quantitatively extracting this information is challenging due to the complexity of erosion, sediment transport, and deposition processes. This study combines a numerical model and a new analytical solution to show that the thickness of fluvial deposits at the outlet of a mountain river can be linked to rainfall oscillations and mountain uplift rate. The findings provide a new theoretical framework for quantitatively extracting information on past rainfall variations from fluvial deposits.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2022)
Article
Geosciences, Multidisciplinary
Brendan Simon, Cecile Robin, Delphine Rouby, Jean Braun, Francois Guillocheau
Summary: This study evaluates the transport coefficient values from natural examples and proposes a method to estimate the transport coefficients of deltaic stratigraphic architecture. The research shows that the diffusion approximation is optimal at specific scales and time resolutions, but additional processes can significantly impact sediment transport in different geological contexts.
Article
Geosciences, Multidisciplinary
Sophie Laspatzis, Delphine Rouby, Sebastien Rohais, Elise Nardin
Summary: Models of rifted margin formation have evolved over time to identify different styles of crustal thinning and magmatic production. This study integrated the sedimentary evolution of 21 basins in the South Atlantic to determine the expression of these processes in depositional environments. A new analysis method, the GeoDyNamical Analysis, was developed to compare basins that underwent rifting at different times. The results show that the timing of sedimentary changes depends on the deformation style and magma production.
Article
Geosciences, Multidisciplinary
Albert Cabre, Dominique Remy, Odin Marc, Katy Burrows, Sebastien Carretier
Summary: This research shows that the impacts of flash floods on Atacama Desert infrastructures are influenced by the scale of rainfall cells and the drainage area upstream of the channels. This understanding is crucial for disaster mitigation efforts and infrastructure planning.
Article
Geosciences, Multidisciplinary
Anne Guyez, Stephane Bonnet, Tony Reimann, Sebastien Carretier, Jakob Wallinga
Summary: This study investigates the quantification of sediment transport and storage in rivers through the analysis of luminescence data and numerical modeling. The analysis reveals similar longitudinal trends in sediment transport and storage along different parts of the rivers. The findings highlight the potential of using single-grain luminescence measurement and modeling approach for quantifying sediment transfer in fluvial systems.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2023)
Article
Geochemistry & Geophysics
Benjamin Gerard, Delphine Rouby, Ritske S. Huismans, Cecile Robin, Charlotte Fillon, Jean Braun
Summary: In this study, a Landscape Evolution Model with flexural isostasy is used to examine the influence of inherited foreland relief on the stratigraphic evolution of the retro-foreland domain during mountain building. The initial relief of the foreland domain significantly alters its landscape evolution during the first 10 million years of simulation. However, once the foreland slope stabilizes, the impact of the initial relief is smoothed out and a long-term shallowing-up mega-sequence is recorded in the models. The timing of the transition from the under-filled to the over-filled phase is also affected by the initial relief of the foreland domain.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2023)
Article
Geosciences, Multidisciplinary
Aude Lurin, Odin Marc, Patrick Meunier, Sebastien Carretier
Summary: Channels are formed by erosive processes and impact the water and sediment dynamics of drainage basins. Identifying channel heads is difficult in steep landscapes, and the processes beneath them are not well understood. The CO(2)CHAIN method extracts channels from digital elevation models, and shows better performance than previous methods, providing new insights into the conditions for channel formation and competition between erosive processes.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2023)
Article
Geography, Physical
Remi Bossis, Vincent Regard, Sebastien Carretier
Summary: Long-term coastal erosion is difficult to quantify, but a method has been developed to reconstruct the initial shape of volcanic islands and measure the erosion since their formation. Applying this method to Corvo Island in the Azores archipelago, it was found that the island has lost a significant volume and surface area due to coastal erosion. Additionally, a strong correlation was observed between long-term coastal erosion and the spatial distribution of waves, with smaller and more frequent waves having a greater impact than storm waves.
EARTH SURFACE DYNAMICS
(2023)