Article
Geography, Physical
Jesse R. Zondervan, Martin Stokes, Matt W. Telfer, Sarah J. Boulton, Anne E. Mather, Jan-Pieter Buylaert, Mayank Jain, Andrew S. Murray, Mhamed A. Belfoul
Summary: This study presents a conceptual model of punctuated river incision and strath terrace formation and provides recommendations for geochmnological sampling and interpretation. The researchers demonstrate the importance of multiple sampling locations and burial dates in extracting reliable climatic signals from strath terrace records.
Article
Geography, Physical
Alfonso Benito-Calvo, Davinia Moreno, Toshiyuki Fujioka, Gloria I. L. Lopez, Fidel Martin-Gonz Martin-Gonzalez, Adrian Martinez-Fernandez, Isabel Hernando-Alonso, Theodoros Karampaglidis, Jose Maria Bermudez de Castro, Francisco Gutierrez
Summary: This paper assesses the long-term downcutting pattern and driving mechanisms of the Upper Ebro River, and reconstructs the valley incision process using river terraces. The study reveals a long-term deceleration in incision rates and suggests that climate change alone cannot explain the observed pattern. Instead, the decrease in incision rates is attributed to base level lowering effects caused by the opening of the Ebro Cenozoic Basin.
GLOBAL AND PLANETARY CHANGE
(2022)
Article
Geography, Physical
Kathleen Rodrigues, Amanda Keen-Zebert, Stephanie Shepherd, Mark R. Hudson, Charles J. Bitting, Bradley G. Johnson, Abigail Langston
Summary: This study uses optically stimulated luminescence (OSL) dating to investigate the influence of lithology and climate on the fluvial bedrock incision and aggradation of the Buffalo National River in northwest Arkansas. The results suggest that terrace formation is related to hydrological conditions and vertical processes dominate in lithologic reaches with higher resistance.
QUATERNARY RESEARCH
(2023)
Article
Geography, Physical
Isaac Salem A. A. Bezerra, Afonso C. R. Nogueira, Marcelo B. Motta, Andre O. Sawakuchi, Thays D. Mineli, Arnaldo de Q. Silva, Antonio G. Silva Jr, Fabio H. G. Domingos, Giovanni A. T. Mata, Felipe J. Lima, Silvio R. L. Rike
Summary: This study analyzes the fluvial deposits associated with the Amazon River in central-eastern Amazonia and improves the chronostratigraphic framework of the region through geomorphological and sedimentary facies analyses, age dating, and sediment provenance data. The results show that the Amazon River has gradually eroded the valley in central-eastern Amazonia since the Late Miocene, forming abandoned fluvial terraces and an active floodplain.
Article
Geosciences, Multidisciplinary
Yuezhi Zhong, Sean D. Willett, Vincenzo Picotti, Jianguo Xiong, Huiping Zhang
Summary: This study reconstructs the spatiotemporal variation of uplift along the Jinshan Gorge of the Yellow River in Northern China based on quantitative analysis of river channel profiles. The research shows that there is a recent acceleration of river incision along the southern Jinshan Gorge, while the northern gorge exhibits more uniform and steady incision rates. This pattern may be attributed to ongoing lithospheric mantle upwelling beneath the southern Ordos Block.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2022)
Article
Meteorology & Atmospheric Sciences
Zhaoyan Gu, Junjie Zhang, Yanwu Lv, Haizhi Wang, Bing Xu, Xiaona Guo
Summary: The study systematically analyzed the Be-10 exposure ages of river terraces in the eastern Tarim Basin, reconstructing hydrological regime changes over the past 170,000 years, and found an inverse relationship between meltwater runoff and temperature changes.
JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
(2021)
Article
Geography, Physical
Abigail L. Langston, Clay H. Robertson
Summary: This article investigates the conditions for the formation of wide bedrock valleys and finds that high sediment load, mobile channels, and vertical incision are necessary for their development.
EARTH SURFACE PROCESSES AND LANDFORMS
(2023)
Review
Geosciences, Multidisciplinary
Evan Tam, Yusuke Yokoyama
Summary: Sea-level proxies for MIS 5e in Japan, mainly consisting of marine terraces, have been correlated with stratigraphy, paleontological analysis, tectonic uplift rates, and dating techniques such as uranium-thorium and carbon-14. This review paper compiled over 70 studies and identified over 300 data points, showing the reliability of sea-level proxy studies in Japan and acknowledging the potential for further constraints through numerical age dating techniques.
EARTH SYSTEM SCIENCE DATA
(2021)
Article
Geochemistry & Geophysics
Yuhui Ye, Lei Wu, Eric Cowgill, Yuntao Tian, Xiubin Lin, Ancheng Xiao, Hanlin Chen
Summary: Quantifying the interaction between tectonics and climate in shaping the northern margin of the Tibetan Plateau, this study investigates the histories of rock uplift and erosion in the Altyn Shan region using low-relief high-elevation surfaces and combined bedrock and detrital apatite analyses. The findings suggest a long-lagged response of accelerated river incision to tectonic-driven rock uplift, with the delayed incision likely resulting from low erosional efficiency during arid climate intervals. These results demonstrate the interplay between tectonics and climate in landform development and have implications for understanding the Cenozoic evolution of the northern margin of the Tibetan Plateau.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Geography, Physical
Willem Viveen, Jorge Sanjurjo-Sanchez, Patrice Baby, Maria del Rosario Gonzalez-Moradas
Summary: The study investigated three factors influencing late Quaternary fluvial incision in the northeastern Peruvian Subandes, including changes in base level, sediment load:discharge ratio controlled by climate cycles, and tectonic uplift. Analyzing river terraces revealed different incision patterns in various parts of the basin. The data showed continuous incision from 18 ± 1.4 ka to 10.3 ± 0.7 ka and identified factors like climate change and tectonic activity affecting the incision rates.
GLOBAL AND PLANETARY CHANGE
(2021)
Article
Multidisciplinary Sciences
Timothy A. Goudge, Alexander M. Morgan, Gaia Stucky de Quay, Caleb Fassett
Summary: Lake breach flooding on early Mars significantly eroded a quarter of incised valleys, impacting the Martian landscape. The global importance of these floods in shaping valley systems highlights their role in the broader landscape evolution of Mars.
Article
Forestry
Ninon Delcourt, Nathalie Dupuy, Catherine Rebufa, Adriane Aupic-Samain, Lisa Foli, Anne-Marie Farnet-Da Silva
Summary: This study investigates the long-term effects of agriculture on microarthropods in Mediterranean forest soils. The results show that after at least 60 years of reforestation, the negative impact of agricultural land use on soil microarthropods is no longer observed.
Article
Multidisciplinary Sciences
Soichi Osozawa, Hisatoshi Ito
Summary: We conducted a detailed geological survey in the Sendai region to accurately map river terraces, identify the source volcanoes of intercalated tephras and locate faults. The river terraces were categorized based on their elevation, consisting of gravels and loam intercalated with tephras. By using various dating techniques, we determined the ages of these terraces and found that their formation coincided with fault activity, providing insights into future seismic events.
SCIENTIFIC REPORTS
(2023)
Article
Environmental Sciences
Wouter R. Berghuijs, Louise J. Slater
Summary: The importance of soil moisture in triggering river floods is increasingly recognized. However, groundwater from the deeper, saturated zone plays a significant role in river flow and flooding, although its effects are not well understood. Analyzing hydroclimatic records of North American watersheds from 1981 to 2018, it is found that baseflow, which is groundwater-sustained river flow, influences the magnitude of annual flooding at different timescales. Floods are mainly caused by the combination of high precipitation and baseflow, with flood magnitudes more closely related to changes in baseflow than in soil moisture and short-term extreme precipitation. Additionally, long-term trends in flood magnitude and decadal variations align more with groundwater storage and baseflow trends rather than changing precipitation extremes and soil moisture, indicating the importance of groundwater in shaping North American river floods.
ENVIRONMENTAL RESEARCH LETTERS
(2023)
Article
Geosciences, Multidisciplinary
F. McNab, T. F. Schildgen, J. M. Turowski, A. D. Wickert
Summary: Alluvial rivers adjust their sediment-transport rates and form landforms such as river terraces in response to changing sediment and water supply. Using a model, we found that the likelihood of terrace formation is greater upstream and in shorter and/or wetter catchments. The evolution of sediment-transport rates depends on whether water or sediment supply is varied, leading to diverse responses to environmental change in alluvial valleys.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Geography, Physical
Sarah A. Schanz, David R. Montgomery
Article
Multidisciplinary Sciences
Sarah A. Schanz, David R. Montgomery, Brian D. Collins
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2019)
Article
Geography, Physical
Sarah A. Schanz, A. Peyton Colee
Summary: Earthflows contribute to landscape heterogeneity, erosion rates, and sediment loads in streams. Lithologic control and vegetation play significant roles in earthflow activity, which alters valley bottom connectivity and sediment transport.
EARTH SURFACE DYNAMICS
(2022)
Article
Geography, Physical
A. Securo, C. Del Gobbo, L. Rettig, S. Pillon, A. De Luca, D. Fontana, E. Benedetti Fasil, R. R. Colucci
Summary: Small glaciers in temperate mountain regions have experienced significant reduction and unprecedented melt rates in recent years. Some glaciers have transitioned from clean ice to debris-covered or even rock glaciers. This study examines the surface elevation change of the Popera Alto glacier in the Sesto Dolomites using LiDAR and Structure from Motion surveys, and analyzes its evolution in terms of surface cover and geomorphic processes. The glacier has lost an average of 0.35 m water equivalent per year over the past 16 years, with active modification of its surface cover by geomorphic processes. The role of debris and local topography feedback has allowed the resilience of the glacier, leading to a marked difference between the current environmental equilibrium line altitude (envELA) and the effective ELA (effELA) of the glacier.
Article
Geography, Physical
Zhenzhen Yan, Yaolin Shi, Lili Kang, Xiangtao Fan
Summary: This study proposes a quantitative regional deformation model based on global positioning system (GPS) data to quantitatively analyze the morphological evolution of rivers in the Three Rivers Region. It finds that tectonic deformation phases significantly control regional landscape development and drainage features.
Article
Geography, Physical
Said Mukhtar Ahmad, Nitheshnirmal Sadhasivam, Mona Lisa, Luigi Lombardo, Mustafa Kemal Emil, Amira Zaki, Cees J. Van Westen, Islam Fadel, Hakan Tanyas
Summary: In this study, we investigated a large slow-moving landslide in Northern Pakistan, using Interferometric Synthetic Aperture Radar (InSAR) analysis. Our results showed that the crown of the landslide is moving faster than the surrounding regions, while the footslope experienced high deformations. We discussed the possible roles of meteorologic and anthropogenic factors in causing these deformations.
Article
Geography, Physical
Shuang Bian, Xibin Tan, Yiduo Liu, Suoya Fan, Junfeng Gong, Chao Zhou, Feng Shi, Michael A. Murphy
Summary: The Yarlung River's drainage divide is primarily moving north due to variations in precipitation across the Himalayas. The Gangdese drainage divide shows predominantly northward and southward migration, controlled by base-level rise and downstream influences. The presence of north-trending rifts separates the drainage divides into five zones, each with a distinct migration pattern.
Article
Geography, Physical
Joon-Young Park, Seok Yoon, Deuk-Hwan Lee, Seung-Rae Lee, Hwan-Hui Lim
Summary: This study developed a multiple-regression model to estimate site-specific average growth rates of debris flow events. The proposed model was validated through a case study and showed reasonable predictions of debris flow velocities and heights.
Article
Geography, Physical
Nicholas Reilly Mccarroll, Arnaud Temme
Summary: New geochronological data from hillslope boulder armor in the Flint Hills reveal the rates and timing of lateral retreat in the landscape. Surfaces of limestone boulders dating back to the Pleistocene era were found, and the ages of the hillslope armor increased with distance from the limestone bench. The estimated rate of lateral retreat in this landscape is 0.02 mm/yr.
Article
Geography, Physical
Xinbo Yao, Yuntao Tian
Summary: By studying the Longmenshan-Minshan drainage divide, we found that it has reached a dynamic steady state, indicating a balance between erosion and rock uplift. This study also reveals the process of formation and evolution of the divide and raises questions about the effectiveness of divide migration metrics.
Article
Geography, Physical
Junhui Yu, Pin Yan, Yanlin Wang, Guangjian Zhong, Changliang Chen
Summary: The seafloor mounds in the Chaoshan Depression of the South China Sea are identified as mud volcanoes, with fluids coming from underlying mud-fluid diapirs. The hydrocarbon gases feeding the mud volcanoes and diapirs are reasoned to originate from deep Mesozoic source rocks, indicating significant Mesozoic hydrocarbon potential in the Chaoshan Depression.
Article
Geography, Physical
Marius Huber, Luc Scholtes, Jerome Lave
Summary: This paper investigates the relationships between hillslope stability and fabric anisotropy of brittle rock materials and the implications for landscape shaping. It explores the different stability modes and movement characteristics of anisotropic materials, and demonstrates the significant control of material anisotropy on landscape shaping.
Article
Geography, Physical
Shubhra Sharma, Anil D. Shukla
Summary: The study investigates the relationship between glacial dynamics and lake sedimentation during the mid-Holocene climate variability in the Southern Zanskar ranges. It utilizes geomorphological disposition, elemental geochemistry, and optical chronology of relict lake sediment to reconstruct the pattern of minor glacier responses to climate variability. The results indicate six centennial to millennial-scale climatic phases, with warmer phases represented by decreased mineralogical fine grain flux and increased coarse grain flux. The study highlights the potential of relict lake sediment and para/peri-glacial landforms in understanding glacial dynamics and climate change during the Holocene.
Article
Geography, Physical
Jean-Francois Bernier, Sydney W. Meury, Patrick Lajeunesse
Summary: In this study, an approach combining various data and observation methods was proposed to improve the monitoring of landfast ice dynamics and its geomorphic impact on sedimentary systems. The results demonstrate the ability of the approach to accurately measure interannual variations in landfast ice and constrain geomorphic changes. Additionally, the study found a strong relationship between the severity of freezing seasons and the response of landfast ice to hydrometeorological events, with different geomorphic responses observed under different winter conditions.
Article
Geography, Physical
Heping Shu, Fanyu Zhang
Summary: This study investigates the relationship between susceptibility of soil-water hazards and human activities, geoheritage sites in the Loess Plateau, China. Landslide and gully erosion susceptibility were obtained using gradient boosting and support vector machines, and a hazard matrix was formed to couple landslide and gully erosion susceptibility. The study found different trends in the magnification times of soil-water hazards chain under different scenarios.
Article
Geography, Physical
Guangqiang Qian, Zhuanling Yang, Xuegang Xing, Zhibao Dong, Youyuan Guo
Summary: Granule ripples are aeolian landforms armored against erosion by coarse grains. This study investigates their seasonal morphological evolution and migration in the Sanlongsha Dune Field. The findings show that wind events, especially those exceeding the threshold velocities of coarse grains, significantly influence the morphodynamics of granule ripples. The study highlights the importance of considering the reptation and saltation of coarse grains in future research on granule ripples.