Article
Geosciences, Multidisciplinary
Lu Cong, Yixuan Wang, Xiying Zhang, Tianyuan Chen, Donglin Gao, Fuyuan An
Summary: The study focused on dating lacustrine sediments in western Zhari Namco, demonstrating that OSL ages are more reliable than C-14 ages due to the influence of lake reservoir effects. Caution is recommended when interpreting paleoenvironmental changes based solely on radiocarbon ages of lacustrine sediments.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Geosciences, Multidisciplinary
Song Xu, Jingjing Wang, Xiaoxia Zhang, Rong Yang, Wei Zhao, Zhiyong Huang, Yongli Wang
Summary: This study investigated the bacterial community structure in sediments of the Linxia Basin using high-throughput sequencing, revealing significant differences between bacterial communities in surrounding soil and sediment samples, as well as a major community structure shift event at M311. The findings suggest that changes in sedimentary layers impact bacterial community diversity and function, particularly indicating an increase in aerobic chemoheterotrophy. These results highlight the potential for microbial communities as biological indicators to reconstruct paleoenvironments in sediment ecosystems.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geography, Physical
Ping Wang, Huiying Wang, Gang Hu, Yukui Ge, Tao Liu, Bo Xu
Summary: The research on the Yarlung Tsangpo Gorge suggests that glacial dams have had a significant impact on the geomorphological evolution of the southeastern Tibetan Plateau.
QUATERNARY SCIENCE REVIEWS
(2023)
Article
Geosciences, Multidisciplinary
Rouxian Pan, Zhiyong Han, Qi Su, Guangwei Li, Xusheng Li, Yalin Li, Xianyan Wang
Summary: By studying the fluvial geomorphology of the Jinsha River basin, the relative uplift of the Tibetan Plateau to the Sichuan basin can be understood. The spatial distribution of slope-break knickpoints in the catchment was determined using slope-area analysis and integration analysis. The magnitude and timing of base level lowering (uplift of the Tibetan Plateau) were estimated by reconstructing the river's longitudinal profile. The results show that the uplift of the studied region can be divided into two stages, an early stage uplift from 1500 to 2900 m around 20 Ma and a late stage uplift from 2900 to 4000 m around 10 Ma, supporting the staged outside uplift of the Tibetan Plateau.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Engineering, Environmental
Yongchao Li, Jianping Chen, Chun Tan, Feifan Gu, Yiwei Zhang, Muhammad Ammar, Qing Wang
Summary: This study discovered a significant amount of lacustrine sediments in the Suwalong reach, indicating river-blocking events and the formation of stable dammed lakes. Analysis revealed high deposition rates and non-local sources of the sediments, suggesting active tectonic activities and wind transport as the main mechanisms for sedimentation in the area.
BULLETIN OF ENGINEERING GEOLOGY AND THE ENVIRONMENT
(2022)
Article
Geosciences, Multidisciplinary
Zhenming Zhao, Wenhua Ji, Chaofeng Fu
Summary: The lacustrine sedimentary record in the western Tibetan Plateau reveals significant climate and environmental changes between 600 and 700 thousand years ago, likely caused by a geomagnetic polarity reversal. This event may have influenced the global climate pattern and will continue to impact climatic changes in the future.
ACTA GEOLOGICA SINICA-ENGLISH EDITION
(2023)
Article
Geochemistry & Geophysics
B. Klein, A. M. Puzrin, A. Stoecklin, A. Kopf
Summary: Predicting the post-failure evolution of underwater mass movements is crucial for assessing the risk of offshore structures and ensuring the safety of coastal communities threatened by tsunamis. This study investigates the contribution of various geometrical parameters, such as slope inclination and thickness of frontal basin sediments, using a coupled Eulerian-Lagrangian finite element framework. The strength difference between the slope and frontal basin sediments is found to play an important role in determining the post-failure geometry.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2022)
Article
Geography, Physical
He Ma, Yong-Li Wang, Chun-Sheng Jin, Zhi-Fu Wei, Gen Wang, Ting Zhang, Wei He, Xue-Yun Ma
Summary: An accurate chronological framework is crucial for paleoclimate reconstruction using lacustrine sediments on the Tibetan Plateau. The study demonstrates the potential of using geomagnetic relative paleointensity (RPI) to establish accurate age control points in lake sediments. Environmental magnetism records from the core confirm the accuracy of correcting the radiocarbon reservoir effect and ensuring the reliability of the core's timescale.
QUATERNARY GEOCHRONOLOGY
(2021)
Article
Geography, Physical
Ya Liu, Xianyan Wang, Qi Su, Shuangwen Yi, Xiaodong Miao, Yiquan Li, Huayu Lu
Summary: This study investigated the mechanism of terrace formation and fluvial evolution in a transient setting in the northeastern Tibetan Plateau. Through analyzing channel profiles and terrace correlation, it was found that the Yellow River is adjusting to increased differentiated fault activity and climate change in the region.
EARTH SURFACE PROCESSES AND LANDFORMS
(2021)
Article
Geochemistry & Geophysics
Yongjie Lin, Ian M. Power, Wenxi Chen
Summary: This study investigates the formation of aragonitic ooids in the west Qaidam Basin, Qinghai-Tibetan Plateau, suggesting that aragonite precipitation is mainly induced by increasing alkalinity of lake waters, rather than microbial activity.
Article
Environmental Sciences
Ning Jiang, Wei Luo, Pin Zhao, Bila Ga, Junmei Jia, John P. Giesy
Summary: A study conducted on Qinghai Lake in China, the largest brackish lake on the Tibetan Plateau, found that the distribution of microplastics (MPs) with size <5 mm varied from the lakeshore to the center. The distribution was influenced by river inflow, tourism, and minimal human activity. Qinghai Lake was classified as moderately polluted with MPs based on the abundance in the sediments. The dominant characteristics of MPs in the sediments were transparent, fiber-shaped polypropylene.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Engineering, Geological
Yueren Xu, Yanbo Zhang, Runchao Liu, Wenqiao Li, Weiheng Zhang, Peng Du, Qinjian Tian
Summary: This study conducted three emergency field surveys using unmanned aerial vehicle (UAV) orthophoto and digital elevation model (DEM) data to investigate the coseismic surface ruptures, land liquefaction, and landslides triggered by the Maduo Earthquake. The findings include a discontinuous coseismic surface rupture zone, severe sand liquefaction regions, and the identification of tension cracks that may trigger future landslides. Further research will reveal the failure mechanism of the earthquake-triggered landslides and the disaster chain.
Article
Geosciences, Multidisciplinary
Yandong Hou, Hao Long, Lei Gao, Ji Shen
Summary: This study investigates luminescence dating technology on lacustrine sediments in the Tibetan Plateau, specifically focusing on the issues with quartz dating and the more reliable results from K-feldspar. The study also highlights the presence of a hard water reservoir effect in Cuoe Lake and the variation of lake levels during the early Holocene period.
Article
Environmental Sciences
Bo Zhao, Yun-sheng Wang, Jia Li, Jian-lin Wang, Chen-xiao Tang
Summary: The study analyzed the characteristics of giant landslide-prone areas in the Diexi area of the eastern Tibetan Plateau, finding that 18 landslides were transverse while the others were consequent, all blocking rivers and creating barrier lakes. Geological structures, active fault zones, and geostress contributed to the formation of landslides.
JOURNAL OF MOUNTAIN SCIENCE
(2021)
Article
Geochemistry & Geophysics
Minghao Wu, GuangSheng Zhuang, Mingqiu Hou, Zhonghui Liu
Summary: This study reconstructs a long-term compound-specific hydrogen isotope record from sedimentary leaf wax n-alkanes in the Qaidam Basin, revealing shifts in aridity and wetness at ca. 40 Ma, 34 Ma, and 24 Ma. The results suggest contrasting patterns in paleohydrology conditions since the Eocene-Oligocene transition, highlighting different climatic responses to global cooling in the region. Wetting in Inner Asia is synchronous with cooling in the North Atlantic and Xining Basin, while the subtropical high re-occupying Inner Asia causes aridity during the late Oligocene to early Miocene.
EARTH AND PLANETARY SCIENCE LETTERS
(2021)
Article
Engineering, Aerospace
Armugha Khan, Himanshu Govil, Haris Hasan Khan, Praveen Kumar Thakur, Ali P. Yunus, Padmini Pani
Summary: This paper presents a detailed analysis of flood inundation areas in Patna district of Bihar, India using Sentinel-1 SAR data. The study examines the spatial extent and temporal pattern of flooding, as well as the changes in river morphology and sandbar characteristics. The results show that the floods caused significant inundation and impacts on the river morphology and sandbars.
ADVANCES IN SPACE RESEARCH
(2022)
Article
Computer Science, Artificial Intelligence
Rabin Chakrabortty, Subodh Chandra Pal, Manoranjan Ghosh, Alireza Arabameri, Asish Saha, Paramita Roy, Biswajeet Pradhan, Ayan Mondal, Phuong Thao Thi Ngo, Indrajit Chowdhuri, Ali P. Yunus, Mehebub Sahana, Sadhan Malik, Biswajit Das
Summary: This study investigates the impact of the COVID-19 lockdown on air quality in India and the relationship between climate variables and the spread of the virus. The results show that the lockdown has improved air quality across the country, but there is no clear connection between climate parameters and the outbreak and mortality of the virus.
Article
Environmental Sciences
Raveena Raj, Ali P. Yunus, Padmini Pani, Ram Avtar
Summary: High-resolution multi-temporal digital elevation models (DEM) were used to quantify erosion volume and gully susceptibility mapping in the Chambal badlands, Central India. Machine learning models were used to predict gully erosion susceptibilities and volume for a larger study region, with satisfactory model performance. The model predicted that 40% of the area is highly affected by gully erosion, with the most severe gully development in the north-Central part.
LAND DEGRADATION & DEVELOPMENT
(2022)
Article
Geosciences, Multidisciplinary
Hao Chen, Ali P. Yunus, Sravanthi Nukapothula, Ram Avtar
Summary: Using machine learning models and satellite images, this study mapped the bathymetry of hundreds of lakes in the Arctic coastal plains and found that the random forest model performed the best in estimating depths.
PHYSICS AND CHEMISTRY OF THE EARTH
(2022)
Article
Chemistry, Analytical
Jan Kamenik, Roman Garba, Konstanze Stuebner, Johannes Lachner, Georg Rugel, Frantisek Veselovsky, John D. Jansen, Vitaly Usik, Jan Kucera
Summary: The study aimed to determine the timing of early hominin occupation at Korolevo in western Ukraine. It began with the preparation and evaluation of samples to assess the impact of impurities on the determination of Be-10 and Al-26 using accelerator mass spectrometry (AMS). Analyzed rock samples exhibited varying levels of weathering, lithology, and mass. Follow-up mass spectrometry scans revealed the presence of Ti impurity in BeO targets, prompting quantification of Ti in quartz concentrate. The Al-26 to Be-10 ratios were found to be independent of Ti and Al impurity for samples from the same depositional level. The reduction in AMS Be current was a result of BeO dilution by TiO2 molecules.
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
(2023)
Article
Environmental Sciences
Pinglang Kou, Qiang Xu, Zhao Jin, Yuxiang Tao, Ali P. Yunus, Ying Xia, Shuo Zhang, Chuanhao Pu
Summary: Rill erosion on unpaved roads is a significant problem on the Loess Plateau in China, but there is limited research on its evolution mechanism. In this study, a runoff scour experiment was conducted on an abandoned field road using a terrestrial laser scanner to assess the dynamic evolution of rill erosion and fill. The results showed that soil erosion significantly decreased after the initial surge, and the downstream was characterized by fill rather than erosion. The relationship between slope, erosion, and fill varied for each scouring.
LAND DEGRADATION & DEVELOPMENT
(2023)
Article
Geography, Physical
Jesper Norgaard, John D. Jansen, Stephanie Neuhuber, Zsofia Ruszkiczay-Rudiger, Mads Faurschou Knudsen
Summary: Existing methods of cosmogenic nuclide burial dating have limitations in high mountain sediment sources due to transient erosion processes and temporary cosmic-ray shielding. P-PINI is a new dating tool that combines a Monte Carlo simulator with cosmogenic nuclide production equations to date sediments sourced from abrupt erosion and discontinuous exposure landscapes. The P-PINI model shows versatility in dating fluvial and glacial sediments, yielding burial ages that differ from isochron-derived ages.
QUATERNARY GEOCHRONOLOGY
(2023)
Article
Meteorology & Atmospheric Sciences
Xinyu Chen, Ram Avtar, Deha Agus Umarhadi, Albertus Stephanus Louw, Sourabh Shrivastava, Ali P. Yunus, Khaled Mohamed Khedher, Tetsuya Takemi, Hideaki Shibata
Summary: The frequency and intensity of typhoons have increased due to climate change, resulting in widespread damage to forests. This study compared different forest damage estimation techniques and identified their respective advantages and suitable use cases. Machine learning classifiers achieved the highest accuracy in damage assessment, but required intensive computation and complex processing steps. The methods and findings presented in this study can aid stakeholders in implementing more effective forest damage monitoring after typhoons and extreme weather events in the future.
WEATHER AND CLIMATE EXTREMES
(2022)
Article
Geosciences, Multidisciplinary
Zilin Xiang, Jie Dou, Ali P. Yunus, Lele Zhang, Xiekang Wang, Wanqi Luo
Summary: Ground shaking on steep slopes triggers landslides and affects vegetation dynamics. This study used pre-and post-earthquake DEMs and remote sensing images to analyze the topographic changes, post-seismic landslides, and vegetation recovery after the 2004 Chuetsu earthquake in Japan. The findings show that the earthquake steepens and roughens the terrain, alters slope aspects, and causes vegetation damage. However, the vegetation has shown a recovery rate, and the number of active landslides has decreased over time, indicating a stable hillslope in the future.
Article
Geosciences, Multidisciplinary
Jesper Norgaard, Martin Margold, John D. Jansen, Redzhep Kurbanov, Izabela Szuman, Jane Lund Andersen, Jesper Olsen, Mads Faurschou Knudsen
Summary: This study presents the first dates from the central part of Northeast Siberia, providing age constraints on glaciations in the region. The results indicate limited Late Pleistocene glaciations to the highlands, suggesting the absence of a large, coalescent ice sheet in Northeast Siberia during the Last Glacial Maximum or Marine Isotope Stage 6.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Editorial Material
Engineering, Geological
Alexander Strom, Kanatbek Abdrakhmatov
Article
Geography, Physical
Chengbin Zou, John D. Jansen, Paul A. Carling, Xiangyang Dou, Zhenlei Wei, Xuanmei Fan
Summary: This study re-evaluates the repeat glacier detachments of a low angle surging valley glacier in the Amney Machen Range in the eastern Tibetan Plateau. By analyzing satellite images, terrain profiles, and field data, the study describes in detail four glacier detachments that occurred over a 15-year period. The factors contributing to glacier detachments include anomalous warming, subglacial hydrology, repeated glacier surging, a soft glacier bed, and ice-rock loading from the glacier headwall. However, the relative influence of each factor varies in different events. Ice-rock debris loadings from the headwall are found to be the most important factor. Some events may have been influenced by short-term climate anomalies, while the role of climate warming in initiating glacier detachments is limited.
Article
Multidisciplinary Sciences
Mahmoud Abbas, Zhongping Lai, John D. Jansen, Hua Tu, Mohammad Alqudah, Xiaolin Xu, Bety S. Al-Saqarat, Mu'ayyad Al Hseinat, Xianjiao Ou, Michael D. Petraglia, Paul A. Carling
Summary: Based on luminescence dating of wetland sediments, we found evidence of prolonged moisture availability in the southern Levant during the last interglaciation. This suggests that the region could have served as a well-watered corridor, funneling migrants into western Asia and northern Arabia.
Article
Geography, Physical
Paul A. Carling, John D. Jansen, Teng Su, Jane Lund Andersen, Mads Faurschou Knudsen
Summary: Rock slope failures in the Lake District, UK, are related to deglaciation processes after the Last Glacial Maximum, but the causes and timing of these failures are still unclear. A study on a cirque headwall failure revealed that the slope was unstable and would have failed catastrophically without the support of glacial ice. As the ice thinned, the translated wedge of rock slowly descended, gradually exposing the failure plane. Cosmogenic 10Be surface exposure ages suggest the presence of small buttressing ice during regional deglaciation and a post-failure mass-wasting event.
EARTH SURFACE DYNAMICS
(2023)
Article
Environmental Sciences
Xuanmei Fan, Ali P. Yunus, Ying-Hui Yang, Srikrishnan Siva Subramanian, Chengbin Zou, Lanxin Dai, Xiangyang Dou, Allu Chinna Narayana, Ram Avtar, Qiang Xu, Runqui Huang
Summary: The increase in glacier-related hazards in High Mountain Asia (HMA) due to global warming has become evident in recent years. While some hazards are instantaneous, it is possible to predict and prevent catastrophic events by monitoring slow gravitational deformation. In this study, space imaging techniques were used to provide robust evidence of historical deformation in the 2021 Chamoli rock-ice avalanche in the Himalayas. The analysis suggests that global warming-induced glacier retreat and thermomechanical effects contribute to the weakening of fractured rock masses in tectonically active mountain belts, supporting the need for advances in Earth observation and seismic monitoring systems to predict impending failures in high mountain regions.
SCIENCE OF THE TOTAL ENVIRONMENT
(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.