Maya utilization of karst groundwater resources

1990 ◽  
Vol 16 (1) ◽  
pp. 63-66 ◽  
Author(s):  
George Veni
Keyword(s):  
Groundwater Resources ◽  
Karst Groundwater

Karst groundwater resources in the countries of eastern Mediterranean: the example of Lebanon

2007 ◽  
Vol 54 (3) ◽  
pp. 597-604 ◽  
Author(s):  
Michel Bakalowicz ◽  
Massaad El Hakim ◽  
Ahmad El-Hajj
Keyword(s):  
Eastern Mediterranean ◽  
Groundwater Resources ◽  
Karst Groundwater

Management of Karst Groundwater Resources

2011 ◽  
pp. 263-282 ◽  
Author(s):  
Michel Bakalowicz
Keyword(s):  
Groundwater Resources ◽  
Karst Groundwater

scholarly journals Utilizing Precipitation and Spring Discharge Data to Identify Groundwater Quick Flow Belts in a Karst Spring Catchment

2019 ◽  
Vol 20 (10) ◽  
pp. 2057-2068 ◽  
Author(s):  
Lixing An ◽  
Xingyuan Ren ◽  
Yonghong Hao ◽  
Tian-Chyi Jim Yeh ◽  
Baoju Zhang
Keyword(s):  
Response Time ◽  
Groundwater Resources ◽  
High Energy ◽  
Spring Discharge ◽  
Karst Groundwater ◽  
Karst Spring ◽  
Conservation Area ◽  
Discharge Data ◽  
Spring Catchment ◽  
Hydraulic Response

Abstract In karst terrains, fractures and conduits often occur in clusters, forming groundwater quick flow belts, which are the major passages of groundwater and solute transport. We propose a cost-effective method that utilizes precipitation and spring discharge data to identify groundwater quick flow belts by the multitaper method (MTM). In this paper, hydrological processes were regarded as the transformation of precipitation signals to spring discharge signals in a karst spring catchment. During the processes, karst aquifers played the role of signal filters. Only those signals with high energy could penetrate through aquifers and reflect in the spring discharge, while other weak signals were filtered out or altered by aquifers. Hence, MTM was applied to detect and reconstruct the signals that penetrate through aquifers. Subsequently, by analyzing the reconstructed signals of precipitation with those of spring discharge, we acquired the hydraulic response time and identified the quick flow belts. Finally, the methods were applied to the Niangziguan Spring (NS) catchment, China. Results showed that the hydraulic response time of the spring discharge to precipitation was 3 months at Pingding County; 4 months at Yuxian County, Yangquan City, Xiyang County, and Heshun County; and 27 months at Shouyang County and Zouquan County. These results suggested that Pingding County is located at a groundwater quick flow belt, which is a major passage of groundwater and contaminants, in the NS catchment. This is important since Pingding County is not only the key development area of karst groundwater but also the key conservation area for sustainable development of karst groundwater resources in NS catchment.

Quantification of long-term wastewater impacts on karst groundwater resources in a semi-arid environment by chloride mass balance methods

2013 ◽  
Vol 502 ◽  
pp. 177-190 ◽  
Author(s):  
Sebastian Schmidt ◽  
Tobias Geyer ◽  
Amer Marei ◽  
Joseph Guttman ◽  
Martin Sauter
Keyword(s):  
Mass Balance ◽  
Groundwater Resources ◽  
Arid Environment ◽  
Karst Groundwater ◽  
Chloride Mass Balance ◽  
Semi Arid

The Groundwater Pollution Disaster Assessment of Feicheng Basin

2014 ◽  
Vol 700 ◽  
pp. 386-389
Author(s):  
Hai Jiao Liu ◽  
Ming Yuan Fan ◽  
Bao Xiang Zhang ◽  
Yu Zhi Shi ◽  
Xiao Feng Yang
Keyword(s):  
Groundwater Pollution ◽  
Groundwater Resources ◽  
Karst Groundwater ◽  
Plain Area ◽  
Disaster Area ◽  
Disaster Assessment ◽  
High Pollution

In order to better protect the karst groundwater resources of Feicheng Basin, paper evaluated the groundwater pollution disaster based on the groundwater pollution investigation of the study area. Results show that the high pollution disaster areas are mainly distributed in plain area of Feicheng Basin, the moderate pollution disaster areas are mainly distributed in the downtown of Feicheng City and Wangguadian Town, the rest of the area are the low pollution disaster area.

Spray irrigation on dairy pastures - efficient or not?

2006 ◽  
pp. 177-181
Author(s):  
S.M. Thomas ◽  
D. Bloomer ◽  
R.J. Martin ◽  
A. Horrocks
Keyword(s):  
Irrigation System ◽  
Groundwater Resources ◽  
Dairy Farmers ◽  
Large Variability ◽  
Irrigation Application ◽  
Irrigation Uniformity ◽  
Survey Results ◽  
Spray Irrigation ◽  
Use Efficiency ◽  
Distribution Uniformity

Applying water efficiently is increasingly important for dairy farmers and other users of surface and groundwater resources to maintain sustainable production. However, irrigation is rarely monitored. We used a questionnaire survey and measurements of five spray irrigation systems working in normal farm conditions to make observations on how efficiently irrigation is being managed. Survey results from 93 dairy farmers showed that, although the farmers believe they know how much water is being applied during irrigation, only 60% make measurements, and about 18% measure irrigation uniformity. Catch-can measurement of irrigation application depth for the different spray systems indicated large variability in application depths during irrigation, and field distribution uniformity ranged greatly between the different systems, decreasing in the order of centre pivots >travelling irrigators> K-line. Changes in irrigation system settings were sometimes made without considering application depths or uniformity. If our five case studies are typical, they may explain the large range of seasonal irrigation amounts recorded in the survey. We recommend that farmers monitor irrigation application depths and uniformity to help manage irrigation water efficiently and to help them estimate the value of irrigation to their enterprise. Keywords: distribution uniformity, water use efficiency, catch cans

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