scholarly journals Water and Sediment Discharge from Small Mountainous Rivers, Taiwan: The Roles of Lithology, Episodic Events, and Human Activities

2008 ◽  
Vol 116 (5) ◽  
pp. 431-448 ◽  
Author(s):  
S. J. Kao ◽  
J. D. Milliman
Keyword(s):  
Human Activities ◽  
Sediment Discharge ◽  
Episodic Events ◽  
Water And Sediment ◽  
Small Mountainous Rivers

Quantifying the impacts of climate and human activities on water and sediment discharge in a karst region of southwest China

2016 ◽  
Vol 542 ◽  
pp. 836-849 ◽  
Author(s):  
Zhenwei Li ◽  
Xianli Xu ◽  
Bofu Yu ◽  
Chaohao Xu ◽  
Meixian Liu ◽  
...  
Keyword(s):  
Human Activities ◽  
Southwest China ◽  
Karst Region ◽  
Sediment Discharge ◽  
Water And Sediment

Postglacial geomorphic development of the Dinosaur Provincial Park badlands, Alberta

1987 ◽  
Vol 24 (1) ◽  
pp. 135-146 ◽  
Author(s):  
Rorke B. Bryan ◽  
Ian A. Campbell ◽  
Aaron Yair
Keyword(s):  
Red Deer ◽  
Experimental Studies ◽  
Sediment Discharge ◽  
Erosion Rates ◽  
Water And Sediment ◽  
Provincial Park ◽  
Geomorphic Processes ◽  
Aeolian Sands

Experimental studies concerning current geomorphic processes and erosion rates in the badlands of Dinosaur Provincial Park, Alberta, have not explained the unusual extent of badland development or prominent nonstructural near-horizontal surfaces that occur in the park. Two of these surfaces result from spillway development associated with Wisconsin deglaciation, and the extent of badland development is associated with major spillway concentration and exposure of highly erodible Cretaceous strata. A third surface is associated with erosion caused by locally generated runoff. All surfaces are blanketed with aeolian sands and silts deposited around 5500 BP, which profoundly affected the hydrology of the area and water and sediment discharge from the badlands to the Red Deer River. Subsequent stripping of the aeolian cover by streams, along with piping and tunnel erosion, has reexposed vulnerable Cretaceous strata and restored the high erosion rates now observed in these badlands.

Results from a 15-year study on hydrocarbon concentrations in water and sediment from Admiralty Bay, King George Island, Antarctica

2009 ◽  
Vol 21 (3) ◽  
pp. 209-220 ◽  
Author(s):  
Márcia C. Bícego ◽  
Eliete Zanardi-Lamardo ◽  
Satie Taniguchi ◽  
César C. Martins ◽  
Denis A.M. da Silva ◽  
...  
Keyword(s):  
Human Activities ◽  
Fossil Fuels ◽  
Sewage Treatment ◽  
Hydrocarbon Contamination ◽  
Research Station ◽  
King George Island ◽  
Admiralty Bay ◽  
Sediment Samples ◽  
Water And Sediment ◽  
Polycyclic Aromatic

AbstractAdmiralty Bay on the King George Island hosts the Brazilian, Polish and Peruvian research stations as well as the American and Ecuadorian field stations. Human activities in this region require the use of fossil fuels as an energy source, thereby placing the region at risk of hydrocarbon contamination. Hydrocarbon monitoring was conducted on water and sediment samples from the bay over 15 years. Fluorescence spectroscopy was used for the analysis of total polycyclic aromatic hydrocarbons (PAHs) in seawater samples and gas chromatography with flame ionization and/or mass spectrometric detection was used to analyse individual n-alkanes and PAHs in sediment samples. The results revealed that most sites contaminated by these compounds are around the Brazilian and Polish research stations due to the intense human activities, mainly during the summer. Moreover, the sediments revealed the presence of hydrocarbons from different sources, suggesting a mixture of the direct input of oil or derivatives and derived from hydrocarbon combustion. A decrease in PAH concentrations occurred following improvement of the sewage treatment facilities at the Brazilian research station, indicating that the contribution from human waste may be significant.

Yellow River's water and sediment discharge decreasing steadily

Eos ◽  
1998 ◽  
Vol 79 (48) ◽  
pp. 589-592 ◽  
Author(s):  
Z. S. Yang ◽  
J. D. Milliman ◽  
J. Galler ◽  
J. P. Liu ◽  
X. G. Sun
Keyword(s):  
Sediment Discharge ◽  
Water And Sediment

scholarly journals Microplastics Footprints in a High-Altitude Basin of the Tibetan Plateau, China

Water ◽  
2021 ◽  
Vol 13 (20) ◽  
pp. 2805
Author(s):  
Sansan Feng ◽  
Hongwei Lu ◽  
Tianci Yao
Keyword(s):  
Tibetan Plateau ◽  
Surface Waters ◽  
Human Activities ◽  
The Tibetan Plateau ◽  
Brahmaputra River ◽  
Plateau Region ◽  
Remote Areas ◽  
Water And Sediment ◽  
Lhasa River ◽  
And Behavior

Microplastics (MPs) are ubiquitous in the environment and have been drawing increasing attention; however, MPs’ occurrence and behavior in remote areas are not well understood. In this study, we quantified and characterized MPs from surface waters and sediments in a remote area, namely the Tibetan Plateau, China. The samples were collected from the Lhasa River and the lower reaches of the Brahmaputra River to better understand MPs’ sources to rivers of the Tibetan Plateau. MPs’ concentrations in water and sediment were 735 items/m3 and 51 items/kg, respectively, and the dominating MPs observed were fibers with size ranging from 100 to 500 µm. MP abundance increased nearly two-fold from upstream to downstream in the Brahmaputra River, associated with the inputs from downstream human activities and the inflows of tributaries (especially the Lhasa River). This study provides important bases for analyzing MPs migration processes in the plateau region.

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