Effect of Split Fertilization on Subsurface Water Quality in Wild Blueberry Fields

2014 ◽  
Keyword(s):  
Water Quality ◽  
Subsurface Water ◽  
Wild Blueberry

Comparison of the water quality of the surface microlayer and subsurface water in the Guangzhou segment of the Pearl River, China

2014 ◽  
Vol 24 (3) ◽  
pp. 475-491 ◽  
Author(s):  
Qing Liu ◽  
Xiaojuan Hu ◽  
Jiangluan Jiang ◽  
Junyi Zhang ◽  
Zhihui Wu ◽  
...  
Keyword(s):  
Water Quality ◽  
Subsurface Water ◽  
Pearl River ◽  
Surface Microlayer ◽  
The Pearl River

Urgent problems of surface and subsurface water quality in Altai krai and possible ways of their solution

2016 ◽  
Vol 43 (1) ◽  
pp. 121-128 ◽  
Author(s):  
V. A. Somin ◽  
V. I. Zanosova ◽  
L. F. Komarova
Keyword(s):  
Water Quality ◽  
Subsurface Water

scholarly journals Predicting sedimentary bedrock subsurface weathering fronts and weathering rates

2019 ◽  
Vol 9 (1) ◽  
Author(s):  
Jiamin Wan ◽  
Tetsu K. Tokunaga ◽  
Kenneth H. Williams ◽  
Wenming Dong ◽  
Wendy Brown ◽  
...  
Keyword(s):  
Water Quality ◽  
Water Table ◽  
Pyrite Oxidation ◽  
Base Cation ◽  
Subsurface Water ◽  
Nitrogen Budgets ◽  
Weathering Rates ◽  
Marine Shale ◽  
Bedrock Weathering ◽  
Water Saturated

AbstractAlthough bedrock weathering strongly influences water quality and global carbon and nitrogen budgets, the weathering depths and rates within subsurface are not well understood nor predictable. Determination of both porewater chemistry and subsurface water flow are needed in order to develop more complete understanding and obtain weathering rates. In a long-term field study, we applied a multiphase approach along a mountainous watershed hillslope transect underlain by marine shale. Here we report three findings. First, the deepest extent of the water table determines the weathering front, and the range of annually water table oscillations determines the thickness of the weathering zone. Below the lowest water table, permanently water-saturated bedrock remains reducing, preventing deeper pyrite oxidation. Secondly, carbonate minerals and potentially rock organic matter share the same weathering front depth with pyrite, contrary to models where weathering fronts are stratified. Thirdly, the measurements-based weathering rates from subsurface shale are high, amounting to base cation exports of about 70 kmolc ha−1 y−1, yet consistent with weathering of marine shale. Finally, by integrating geochemical and hydrological data we present a new conceptual model that can be applied in other settings to predict weathering and water quality responses to climate change.

scholarly journals Imprints of pandemic lockdown on subsurface water quality in the coastal industrial city of Tuticorin, South India: A revival perspective

2020 ◽  
Vol 738 ◽  
pp. 139848 ◽  
Author(s):  
S. Selvam ◽  
K. Jesuraja ◽  
S. Venkatramanan ◽  
S.Y. Chung ◽  
P.D. Roy ◽  
...  
Keyword(s):  
Water Quality ◽  
South India ◽  
Subsurface Water ◽  
Industrial City
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