LONG-TERM WATER QUALITY TRENDS IN A PARTLY FLOODED UNDERGROUND COAL MINE

2004 ◽  
Vol 2004 (1) ◽  
pp. 1438-1459
Author(s):  
Eric F. Perry ◽  
◽  
Henry W. Rauch
Keyword(s):  
Water Quality ◽  
Coal Mine ◽  
Underground Coal Mine ◽  
Water Quality Trends

scholarly journals Determining Long-Term Trends of Four Fast-Eutrophicated Lakes in China and Finland

2015 ◽  
Vol 8 (1) ◽  
pp. 39 ◽  
Author(s):  
Mengna Liao ◽  
Ge Yu ◽  
Anne-Mari Ventelä ◽  
Xuhui Dong
Keyword(s):  
Water Quality ◽  
Anthropogenic Impacts ◽  
Turning Points ◽  
Dynamic Modelling ◽  
Sharp Change ◽  
Temperature Variations ◽  
Long Term Trends ◽  
Nutrient Changes ◽  
Water Quality Trends

<p>Lake eutrophication has increased in pace in recent decades and has caused serious environmental problems However, the development trends have not been fully determined as it is difficult to recognize complex effects emanating from both climate and human mechanisms. China has many lakes in different trophic stages, which represent three developing stages from forest- to agriculture-, and then to urban-lake, typically in Lakes Lugu, Taibai, and Taihu. To determine long-term water quality trends, the three lakes were chosen for statistic analysis on dominant effects on the diatom-inferred nutrient changes, and to undertake dynamic modelling regarding climate-controlled nutrient changes. The results indicate the significant turning points of water quality in Lakes Lugu, Taibai and Taihu occurring in the 1990s, 1950s and 1940s respectively, which were effected from human activities by increases in tourism, farming and urbanization respectively. Water quality changes in Lakes Lugu, Taibai and Taihu captured 68.4%, 54.9%, and 86.0% of the temperature variations before the turning points. The anthropogenic impacts explained 84.0%, 96.4% and 96.0% of the water quality variations after the turning points, where the sharp change of water quality by human activity has played an accelerated effect on the gentle change of temperature. Compared with the 4 phases of water quality development in Pyhäjärvi Lake (SW Finland), Lakes Lugu and Taibai have experienced the 1<sup>st</sup> and 2<sup>nd</sup> phases, and Taihu has experienced from the 2<sup>nd</sup> to 3<sup>rd</sup> phases during the last 150 years. Phase 4 has not occurred in the three lakes, but it is a key period during the eutropication we need to pay attentions.</p>

Long-term Water Quality Trends after Implementing Best Management Practices in South Florida

2009 ◽  
Vol 38 (4) ◽  
pp. 1683-1693 ◽  
Author(s):  
Samira H. Daroub ◽  
Timothy A. Lang ◽  
Orlando A. Diaz ◽  
Sabine Grunwald
Keyword(s):  
Water Quality ◽  
Best Management Practices ◽  
Management Practices ◽  
South Florida ◽  
Best Management ◽  
Water Quality Trends

Quantifying the effects of hydrological changes on long-term water quality trends in temperate reservoirs: insights from a multi-scale, paleolimnological study

2018 ◽  
Vol 60 (3) ◽  
pp. 361-379 ◽  
Author(s):  
Leanne Elchyshyn ◽  
Jean-Olivier Goyette ◽  
Émilie Saulnier-Talbot ◽  
Roxane Maranger ◽  
Christian Nozais ◽  
...  
Keyword(s):  
Water Quality ◽  
Multi Scale ◽  
Hydrological Changes ◽  
Water Quality Trends

Water quality changes of a closed underground coal mine in Korea

2011 ◽  
Vol 184 (1) ◽  
pp. 503-513 ◽  
Author(s):  
Young Wook Cheong ◽  
Gil-Jae Yim ◽  
Sang Woo Ji ◽  
Sang Soo Kang ◽  
Jeffery Skousen
Keyword(s):  
Water Quality ◽  
Coal Mine ◽  
Quality Changes ◽  
Underground Coal Mine

scholarly journals A review of long-term pesticide monitoring studies to assess surface water quality trends

2020 ◽  
Vol 9 ◽  
pp. 100064
Author(s):  
R. Chow ◽  
R. Scheidegger ◽  
T. Doppler ◽  
A. Dietzel ◽  
F. Fenicia ◽  
...  
Keyword(s):  
Water Quality ◽  
Surface Water ◽  
Surface Water Quality ◽  
Pesticide Monitoring ◽  
Water Quality Trends

Long-Term Water Quality Trends in the Lake Okeechobee Watershed, Florida

2011 ◽  
Vol 41 (sup1) ◽  
pp. 548-575 ◽  
Author(s):  
Joyce Zhang ◽  
Patricia Burke ◽  
Nenad Iricanin ◽  
Steven Hill ◽  
Susan Gray ◽  
...  
Keyword(s):  
Water Quality ◽  
Lake Okeechobee ◽  
Water Quality Trends
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