Results 61 to 70 of about 19,955 (232)

Geochronological reconstruction of the Lateglacial deglaciation in the Arve Valley (Northern French Alps)

Journal of Quaternary Science, EarlyView.
ABSTRACT The timing and spatial patterns of glaciers retreat in the Northern French Alps during the Lateglacial (19.0–11.7 ka) remain debated, reflecting discrepancies among available chronological data sets. The complex interactions between major glaciers, such as the Rhône and Arve glaciers to the north and the Isère glacier to the south, represent a
Quentin Portal, Christian Crouzet, Jean‐François Buoncristiani, Julien Carcaillet   +3 more
wiley   +1 more source

Surface-borehole resistivity tomography for seepage detection in earth-rock dams

Meitian dizhi yu kantan
ObjectiveResistivity methods allow for effective detection of seepage in reservoir dams. However, when used to detect the hidden hazards of dams, the surface resistivity method fails to accurately identify vulnerable areas across an entire dam due to ...
Lei TAN, Xiongwu HU, Pingsong ZHANG, Xiaoyi JIANG, Ya DONG, Fuda LIU, Chunyang LI, Hu XU   +7 more
doaj   +1 more source

Integrating Machine Learning and StoDyM for Check Dam Site Selection on the Loess Plateau, China

Land Degradation &Development, EarlyView.
ABSTRACT Severe soil erosion in the Loess Plateau has led to significant land degradation, threatening agricultural productivity and ecosystem stability. Check dams, as a critical soil–water conservation measure, have proven effective in mitigating sediment loss and reclaiming farmland.
Hongwei Ma, Liquan Sun, Huili Guo, Shufang Wu   +3 more
wiley   +1 more source

Comparative Effectiveness of Different Mulch Types and Application Rates for Reducing Runoff and Sediment Yield on Forest Skid Trails

Land Degradation &Development, EarlyView.
ABSTRACT Rehabilitation of skid trails following timber harvesting is critical for preserving forest soil integrity, particularly within ecologically sensitive ecosystems such as the Hyrcanian forests of northern Iran, a UNESCO World Heritage Site. Although mulching is widely recommended for erosion control, field evidence comparing different locally ...
Masoumeh Ahmadi, Meghdad Jourgholami, Baris Majnounian, Shahram Khalighi Sigaroodi, Francesco Latterini, Rachele Venanzi, Angela Lo Monaco, Rodolfo Picchio   +7 more
wiley   +1 more source

Establishing Monthly Benchmarks for Erosion Control and Vegetation Restoration Targets Across the Loess Plateau

Land Degradation &Development, EarlyView.
ABSTRACT Establishing scientifically grounded soil erosion control targets and feasible vegetation restoration strategies is crucial for high quality development of the Chinese Loess Plateau which is severely affected by soil erosion. Currently, the commonly used tolerable soil loss (TSL) is inadequate for addressing the spatial heterogeneity in ...
Ye Wang, Haijing Shi, Xihua Yang, Rui Li, Hongming Zhang, Jiaqiong Zhang, Wenyi Sun, Yangyang Liu, Qinggaozi Zhu, Guang Yang   +9 more
wiley   +1 more source

An Integrated Model for Dam Break Flood Including Reservoir Area, Breach Evolution, and Downstream Flood Propagation

Applied Sciences
The reasonable and efficient prediction of dam failure events is of great significance to the emergency rescue operations and the reduction in dam failure losses. This work presents a model that is based on the physical mechanism.
Huiwen Liu, Zhongxiang Wang, Dawei Zhang, Liyun Xiang   +3 more
doaj   +1 more source

Characteristics and Influencing Factors of Soil Shear Strength in Gully Erosion at Different Developmental Segments of Subalpine Meadows

Land Degradation &Development, EarlyView.
ABSTRACT Subalpine meadows play important roles in biodiversity conservation and soil carbon sequestration, but gully erosion poses a serious threat to their ecological stability. Soil shear strength (τ) is a key mechanical parameter for evaluating gully stability and soil resistance to failure. However, the spatial variation in soil shear strength and
Xiaofeng Yang, Keyu Yan, Qingsong Duan, Xiaohan Mei, Pingping Chen, Yanmei Hu, Yanrui Shao, Yanjun Mao, Shufang Li, Zhengfa Chen   +9 more
wiley   +1 more source

Unsteady seepage analysis of super-high core wall dams using 3D finite element method

Yantu gongcheng xuebao, 2018
The processes of reservoir impoundment and emptying have important impact on seepage safety of earth-rock dams. The seepage control is one of the key technical problems for 300 m-level super-high core wall dams.
LU Bin 1, XIE Xing-hua 1, WU Shi-qiang 1, WU Wei-xing 2, DA Ming-chang 3, GONG Yan 1
doaj   +1 more source

A simplified two‐station approach for modeling metabolism in dam tailwaters subject to diel flow variation

Limnology and Oceanography: Methods, EarlyView.
Abstract Tailwaters are ubiquitous and highly managed ecosystems whose food webs often rely disproportionately on autochthonous energy. In situ continuous dissolved oxygen data are increasingly being used to estimate gross primary productivity and ecosystem respiration in rivers, but this approach is complicated in tailwaters, where upriver ...
Ian W. Bishop, Bridget R. Deemer, Theodore A. Kennedy, Robert A. Payn, Robert O. Hall Jr., Charles B. Yackulic   +5 more
wiley   +1 more source

Research and Application on the Displacement Hybrid-model of High Earth Dam

工程科学与技术, 2012
:The construction of high rockfill dam has a rapid development especially in the last 20 years. These high dams with large storage capacity are located in a complex geological environment.All these projects whose slopes are precipitous are large-scale ...
Pei Liang
doaj