The Shule River Basin, situated in the western part of the Hexi Corridor in Gansu Province, China (Fig. 1), spans a geographical area between 93°10′ to 99° 00′ E and 38° 00′ to …
Figure 4: Changes in sand–mud border between the Yangtze's subaqueous delta and the Pleistocene sand sheet in the East China Sea, which suggest rapid recession in the outer margin of the main ...
tions of sand creep and proposed a model; however, it requires 13 input parameters, most of which are determined using back analysis involving considerable laboratory test data and a difficult and complex process. In the case of construction on the Yangtze River Sand, an accurate pre-diction of the sand creep would require laboratory testing
1. Introduction. The Yangtze finless porpoise (Neophocaena asiaeorientalis asiaeorientalis) is a subspecies of the narrow-ridged finless porpoise (N.asiaeorientalis), it is endemic to the middle and lower reaches of the Yangtze River, and is the only freshwater porpoise (Gao and Zhou, 1993, Zhao et al., 2008, Committee on Taxonomy, 2009).Following …
About 100 km south of the lake, the Gan River — one of the Yangtze's principal tributaries — also appears in this July 19, 2018, image to be busy with sand mining.
Zhou Jinfeng, Secretary-General of the China Green Development Council, said sand mining has seriously damaged the aquatic ecology and impacted the Yangtze River's …
Yangtze River - Delta, Shipping, Pollution: The Yangtze delta, which begins beyond Zhenjiang, consists of a large number of branches, tributaries, lakes, ancient riverbeds, and marshes that are connected with the main channel. During major floods the delta area is completely submerged. Lake Tai, with an area of about 930 square miles (2,410 square km), …
The distribution of the surface suspended sand concentration (SSSC) in the Yangtze River estuary is extremely complex. Therefore, effective methods are needed to …
DOI: 10.1016/j.jclepro.2019.118385 Corpus ID: 204451739; An optimization model of sand and gravel mining quantity considering healthy ecosystem in Yangtze River, China @article{Zhai2020AnOM, title={An optimization model of sand and gravel mining quantity considering healthy ecosystem in Yangtze River, China}, author={Wujuan Zhai and Jiyong …
DOI: 10.1016/J.ECSS.2021.107330 Corpus ID: 233575365; Sedimentary characteristics and evolution process of the Huangqiao sand body in the Yangtze River Delta, China @article{Cheng2021SedimentaryCA, title={Sedimentary characteristics and evolution process of the Huangqiao sand body in the Yangtze River Delta, China}, author={Yung-Yun Cheng and …
Since 2003, the Yangtze River Protection Committee has issued a limit that sand extraction should be less than 0.3 × 10 8 t·yr −1, but due to illegal sand extraction, the actual sand ...
Yangtze Pollution in AI Future Prospects and Challenges. The future health of the Yangtze River is a topic of significant concern. Predictions suggest that if current trends continue, the river's health could further deteriorate, impacting both human and wildlife populations that depend on it.However, with concerted efforts and effective policies, it is possible to reverse …
Yangtze River, Chinese Chang Jiang or Ch'ang Chiang, River, China.It is the world's third longest river, 3,915 mi (6,300 km) long. Rising in the Tanggula Mountains in west-central China, it flows southeast before turning northeast …
There are less than 2000 fresh water Yangtze finless porpoises remaining, of which 100 live in semi-natural reserves. This low number makes the species critically endangered. The Yangtze finless porpoise only lives in the Yangtze River, the longest river in Asia. At one point, this porpoise shared the
Before 2007, investment and improvement in wastewater infrastructure mainly concentrated on the coastal areas and the Yangtze River Delta (Fig. 1 (b)), China's most important economic center.This resulted in the construction of more than 50% of the WWTPs in the downstream sub-basin, which occupies less than 10% of the YRB (Fig. S2 in Appendix …
The Sand Pebbles Seguir El Cañonero del Yangtzé (T12:00:00+00:00) The Sand Pebbles. China, 1926. Un barco de la marina americana que patrulla el río Yang Tse, se ve envuelto en el conflicto armado entre nacionalistas y comunistas chinos. El maquinista (McQueen), atento a su trabajo, procura no tomar partido, pero los ...
Sandbar areas showed similar trends, decreasing with the amount of sediment transportation and river channel erosion. Since 2009, riverbed scour intensity has increased. Sand mining in the river channel accounted for 15.9% of the riverbed scour of the flat shoal, whereas dredging and mud. CRediT authorship contribution statement
The study on the distribution characteristics of suspended sediment concentration (SSC) in estuaries is an important subject in the study of estuaries and coasts, which has important theoretical significance and practical value.In order to fully understand the characteristics of SSC in the Yangtze River Estuary and its adjacent waters, this paper uses …
The sand and gravel in the Yangtze River, with a diameter of 0.1–2.0 mm, is not only an important part of the river bed, but also one kind of natural resource of great economic value. It is widely used in construction engineering, dredger filling and other fields. The economic benefit of river sand and gravel mining is very considerable.
Some published material has shown the existence of the creep behavior in sands. To investigate the creep behavior of Yangtze River sand, a series of lab tests were conducted using a high-pressure compression setup developed for this study. The sand was compressed under pressures of 800, 1600, and 3200kPa. The results demonstrate particle crushing is …
In this study we assess the impact of sand mining in Poyang Lake, where dredging began in 2001 after sand mining in the Yangtze River had been banned. In April 2008 concern over the impact on the ...
O'-SiAlON/SiC ecomaterials were synthesized by using the Yangtze River sand that containing abundant Si and Al elements as the major raw material with minor additives through the …
Scenario 4: Sand & mud without interaction model with Van Rijn (1993), bed sand D50 = 200 μm, suspended mud D50 = 32 μm from upstream with sediment concentration 0.1 kg/m 3. Scenario 5: Sand & mud interaction model with Van Rijn (1993), bed sand D50 = 200 μm, suspended mud D50 = 32 μm from upstream with sediment concentration 0.1 kg/m 3.
The Yangtze River is the longest river in Asia. It is approximately 3,915 miles (6,300 kilometers) long, the third longest river in the world.
The law forbids sand mining activities in areas where and when sand mining is prohibited in the Yangtze River Basin. Zhou Jinfeng, Secretary-General of the China Green Development Council, said sand mining has seriously damaged the aquatic ecology and impacted the Yangtze River's biodiversity, especially benthic organisms.
This study examined the sandy reaches downstream of the China Three Gorges Project along the Yangtze River for river erosion and siltation, riverbed morphology, beach evolution, and other physical processes over the past 40 years, to explain the evolution of river geomorphology under human activities, such as reservoirs, improvement projects ...
Abstract. The caisson foundation of the No.29 main pier of Shanghai-Nantong Yangtze River Bridge has a large range of sand gushing, not only the foundation of the caisson is inclined, but also the sand layer of the base of the caisson and the side wall of the caisson has been greatly disturbed. The bearing capacity of basement soil is reduced, and the …
Sand mining is believed to have lowered the bed of the Poyang Lake - a Yangtze river flood outlet and one of the world's largest sources of sand used in construction - by at least 20 metres (60 feet).
O rio Yangtze, localizado na China, é uma vazão impressionante que percorre aproximadamente 6.300 km, possuindo uma bacia de 1.800.000 km².Isso o tornou o terceiro maior rio do mundo, superado apenas pelo Amazonas e pelo …
Characterization of suspended sand concentrations in the Yangtze River Estuary and adjacent waters Kuifeng Luan, Kuifeng Luan, Hui Li, Yujia Pan, Zhenhua Wang, Hang Xu, Weidong Zhu, Weidong Zhu, Jie Wang, Haixia Wan, Xinyi You; Affiliations Kuifeng Luan College of Marine Sciences, Shanghai Ocean University, Shanghai, China ...
