Article
Geosciences, Multidisciplinary
Jiangyong Wang, Guizai Gao, Dongmei Jie, Qi Fang, Hainan Wang, Honghao Niu, Meng Meng, Guihua Zhang, Ying Liu, Lina Song, Linlin Liu
Summary: The research finds that rivers, Horqin Sandy Land, and the interior of Eurasia play important roles in the formation of aeolian soils along the East and West Liao rivers. The reconstruction of climate using phytoliths reveals several periods of warm-wet and cold-dry conditions. The study suggests preventing the transport of aeolian soils along the rivers by planting shrub belts and increasing vegetation cover.
Article
Geography, Physical
Kenzie L. Shandonay, Mark W. Bowen, Phillip H. Larson, Garry L. Running, Tammy Rittenour, Richard Mataitis
Summary: This research characterizes the morphology, stratigraphy, and geochronology of sand stringers in the upper Mississippi River basin in the US Midwest. The study reveals differences in formation timing and characteristics between two sand stringer sites, highlighting the complexity of aeolian systems and the variety of sediment sources contributing to landform development in the region.
EARTH SURFACE PROCESSES AND LANDFORMS
(2022)
Article
Geography, Physical
Ahmed Dawelbeit, Etienne Jaillard, Ali Eisawi
Summary: Grain size analysis is a powerful method for determining depositional environment. The study conducted grain size analysis on samples from the Kordofan Region in Central Sudan and found that the predominantly Holocene sand sequences were deposited in an aeolian environment, with sediments transported from the north to the south. The results also indicated that the sand sequences were influenced by both distal, fine-grained Saharan material and proximal, coarser-grained sand from Late Pleistocene aeolian dunes.
Article
Geosciences, Multidisciplinary
Na Zhou, Qing Li, Chun-Lai Zhang, Huang Chi-Hua, Yanbing Wu, Bingqi Zhu, Songbo Cen, Xiaoqi Huang
Summary: Typical aeolian landforms have developed in China's Yarlung Zangbo River valley on the Qinghai-Tibet Plateau. Understanding the grain size characteristics of these dunefields is crucial for revealing the region's aeolian dynamics. Different dunefields exhibit distinct patterns of grain size distribution influenced by local airflow and wind dynamics, with Maquan valley showing interactions between local sands and airflow, Shannan valley controlled by valley winds, and Mainling valley influenced by sand entrainment and saltation.
Article
Environmental Sciences
Hongxue Zhang, Kecun Zhang, Zhishan An, Yanping Yu
Summary: In this study, the wind conditions, sand erosion and deposition patterns, and grain composition were compared and evaluated in the drifting-sand desert and sandy-gravel Gobi along the Dunhuang-Golmud railway in China. The results show that the sandy-gravel Gobi has higher wind strength and a greater deposition amount compared to the drifting-sand desert. The spatial distributions of sand erosion and deposition are consistent in both regions, with deposition mainly on the west side of the railway and erosion on the east side. These findings are important for developing preventive measures and determining appropriate sand control strategies.
JOURNAL OF ARID LAND
(2023)
Article
Geography, Physical
Nicholas Cohn, Patrick Dickhudt, John Marshall
Summary: This study demonstrated the use of in-line holography to generate quasi-3D images of saltating particles during aeolian transport events, revealing a vertical fining trend in sediment grain size 50 mm above the bed. An increase in both particle number and sediment concentration with rising wind speeds was observed, while the median grain size coarsened over time despite decreasing wind speeds.
EARTH SURFACE PROCESSES AND LANDFORMS
(2022)
Article
Engineering, Civil
Tao Wang, Jianjun Qu, Lihai Tan, Yang Gao, Kai Zhang, Boyuan Shi
Summary: This study conducted field observations on aeolian transport over Gobi areas with high gravel coverage, revealing continuous saltation and higher saltation layer height compared to sand surfaces. The findings suggest strong wind-blown sand activities over these areas, with sand particles reaching heights of 2 meters during transport. Additionally, raising the height of sand fences from 2-3 meters may help trap more transported sand particles effectively.
JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS
(2022)
Article
Environmental Sciences
Zhi Chen, Baosheng Li, Fengnian Wang, Shuhuan Du, Dongfeng Niu, Yinjun Zhao, Yuejun Si
Summary: This study reconstructed the evolution of storm surges along the coast of the Beibu Gulf, Guangxi over the Little Ice Age based on the WTS section, and found that the distribution characteristics and stability of storm sediments are significantly influenced by solar activity.
Article
Geosciences, Multidisciplinary
Shuai Li, Hongyan Liu, Hongya Wang, Yukun Zheng, Wanting Pan
Summary: Solis in grassland regions downwind of deserts display different mineral and chemical characteristics from those in the source area due to grain-size sorting and weathering. By studying topsoil samples in western Inner Mongolia grassland, it is found that element ratio proxies such as Sm/Gd, Tb/Dy, Nb/Ta, Er/Tm, La/Ce, Sc/V, Yb/Lu, and Ce/Ce* can effectively distinguish and identify the sources of different grain-size end-members.
Article
Geosciences, Multidisciplinary
Jingran Zhang, Qian Liu, Linhai Yang, Hongyi Cheng, Yun Cai, Hao Long
Summary: This study used optically stimulated luminescence dating technique to investigate aeolian sediments in the southern bank of Qinghai Lake, providing a high-resolution chronology and grain-size distribution of Holocene aeolian activities in the region. The results suggest that the aeolian activities in the Qinghai Lake basin were influenced by both regional climatic conditions and fluctuations in the lake level of Qinghai Lake.
Article
Mathematics, Interdisciplinary Applications
Shao-Heng He, Zhi Ding, Hai-Bo Hu, Min Gao
Summary: The study conducted NMR tests on different grain sizes of carbonate-based sand, silicate-based sand, and glass beads to investigate the effect of grain size on micro-pore structure and fractal characteristics. Results showed that as grain size increases, the pore size distribution evolves from a binary to a ternary structure, with a significant increase in maximum pore size. Moreover, irregular particle shapes were found to enhance continuity between large and medium pores, and an increase in grain size led to higher fractal dimension and heterogeneity in the micro-pore structure.
FRACTAL AND FRACTIONAL
(2021)
Article
Geosciences, Multidisciplinary
Elizabeth H. Dingle, Jeremy G. Venditti
Summary: River bed sediments often lack fine gravel between 1 and 5 mm, a phenomenon referred to as the grain size gap. This study investigated the behavior of grain size gap material during the gravel-sand transition. It was found that the presence of sand deposition enhanced the mobility of gap gravel, suggesting that gap particles may be transported to other environments.
JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE
(2023)
Article
Marine & Freshwater Biology
Yonglan Zhu, Qi Chen, Yang Zhang, Wenwen Tang, Chaoran Xu, Weihua Li, Jianjun Jia
Summary: Natural coasts act as a natural barrier and provide protection against waves and storm surges. With sea level rise and coastal erosion, it is important to focus on nature-based coastal reconstruction and protection, especially for sand-gravel beaches. The development of accurate and portable gravel grain size measurement technology, such as the GraSSAMS system, is essential for beach replenishment and coastal protection.
ESTUARINE COASTAL AND SHELF SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
Jianjun Qu, Tao Wang, Qinghe Niu, Benli Liu, Lihai Tan, Qingjie Han, Yang Gao, Jianhua Xiao
Summary: This paper studies the issue of sand/gravel hazards caused by strong winds in the Gobi Desert along the Lanzhou-Xinjiang high-speed railway. The study identifies the mechanisms behind these hazards and analyzes the outcomes of sand control projects. The findings lead to the development of an effective sand control measure, which significantly reduces sand transport and deposition along the railway.
SCIENCE CHINA-EARTH SCIENCES
(2023)
Article
Thermodynamics
Shu Zeng, Zhenguo Yan, Jun Yang
Summary: This research measured the thermal conductivity of three types of sands with different properties and compared and evaluated eight thermal conductivity models. An improved model was proposed based on the analysis of existing models' deficiencies and the microscopic mechanism of soil. The improved model accurately predicted the thermal conductivity of different types of soils and provided more scientific explanations for the limiting cases of porosity and saturation. It also revealed linear relationships between soil thermal conductivity and solid particles and significant nonlinear relationships between thermal conductivity and porosity or saturation.
INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER
(2023)
Article
Geosciences, Multidisciplinary
Jiaqiong Zhang, Chunlai Zhang, Xiaojie Ma, Na Zhou, Huanzhi Wang, Patrick S. Rissler
Article
Soil Science
Jiaqiong Zhang, Mingyi Yang, Xinxin Deng, Zhang Liu, Fengbao Zhang
SOIL & TILLAGE RESEARCH
(2019)
Article
Environmental Sciences
Jiaqiong Zhang, Fenli Zheng, Zhi Li, Zhizhen Feng
Summary: This study assessed soil quality under soil erosion degradation using two approaches (ODS and MDS) to derive soil quality indices (SQIs). The results showed that SQIs varied significantly between erosion and deposition sites, reflecting the impact of soil erosion on soil quality. The ODS approach, which uses a strict indicator selection procedure, can theoretically obtain more reliable results compared to MDS.
LAND DEGRADATION & DEVELOPMENT
(2022)