scholarly journals Geostatistical analysis and optimization of the state hydrogheological monitoring network within the Pripyat river basin (Ukraine)

Formulation of the problem. The State Hydrogeological Monitoring Network has to provide the necessary information to manage groundwater resources and prevent negative changes in the geological environment. Currently, there is a negative tendency to decrease the number of observation wells, loss of information about the space-time variability of the hydrogeological regime elements in Ukraine. In conditions of limited funding, an important task is to develop an effective strategy for reforming the hydrogeological monitoring system, taking into account international experience and based on modern geoinformation technologies. Particular attention has to be given to transboundary territories. One of them is the Pripyat River basin, which is characterized by the low level of the State Hydrogeological Monitoring Network representativeness, both in comparison with European Union standards and with the existing groundwater monitoring network of neighbouring Belarus. The purpose of the article is to evaluate the actual state of the hydrogeological observation wells network and optimize it within the territory of the Ukrainian part of the transboundary Pripyat watershed basin. Methodology and materials. The State Scientific and Production Enterprise "Geoinform of Ukraine" database of State Groundwater Monitoring System composition and functioning as well as zoning map under the conditions of water exchange formation in the upper water-bearing level were used for the study. For the studied territory of the water exchange basin of Pripyat, the analysis of density and uniformity of the observation points distribution as well as the variogram analysis of the spatial distribution of groundwater-level altitudes within the study area were carried. For the actual monitoring network, the expected error of the spatial modelling of the groundwater-surface was evaluated. Results. The obtained results of the geostatistical analysis made it possible to substantiate the project wells locations within the water exchange sub-basins to improve the quality of hydrogeological monitoring problem solutions. Scientific novelty. The method of the hydrogeological monitoring network optimization has been improved based on geoinformation and geostatistical approaches and implemented for the Ukrainian part of the Pripyat River basin, taking into account the hydrogeological conditions of the territory and the configuration of the existing network. Practical significance. Optimization and increment of the observation wells network, taking into account the obtained results, will provide the effective functioning of the hydrogeological monitoring system within the Ukrainian part of the Pripyat River basin and will have an economic effect, given that the cost of any measures to improve the groundwater quality and quantity is far more expensive than the monitoring system optimization.

Author(s):  
O. Klymenko ◽  
V. Butsyak ◽  
A. Butsyak

Monitoring of the environment is an important instrument of water resources effective management, well-timed prevention of harmful pollutant influence and thorough information of the public about the state and tendencies of changes in river basin agrosphere. However, the existing system of monitoring doesn’t fully correspond to international requirements and is one of the main restraining factors of the basin management system development. It is suggested to put into the base of monitoring system of socio-economic-ecological systems river basin the unification of well-known home and international monitoring systems which are reasonable to supplement with additional data of regional character. The system of monitoring of river basin agrosphere resources has been substantiated in the article. The main tasks and structure elements of monitoring system have been defined. It is reasonable to fulfill the monitoring of river basin agrosphere state according to appropriate algorithm which forsees the realization of operation cycle, from definition of information needs to information product using. Then the principal blocks of  monitoring  system of river basin agrosphere to estimate the state of socio-economic-ecological systems are considered to be the following ones: socio-economic-ecological and geology-geomorphological, but to estimate  the state of surface waters – hydrological, climatic and bioecological. It should be mentioned that in the suggested monitoring system of river basin agrosphere state the blocks «Observation» and «Prognostication» are closely interconnected as the prognostication of agrosphere state changes is possible only when sufficient and reliable information about its actual state is available. The problem of information  product using by regional and local authorities, as well as, by basin administration is of peculiar attention in the monitoring system of river basin agrosphere state.


2021 ◽  
Author(s):  
Nataliia Lyuta ◽  
Iryna Sanina ◽  
Olga Biarozka ◽  
Olga Vasniova ◽  
Andreas Scheidleder ◽  
...  

<p>The EU-funded program European Water Initiative Plus for Eastern Partnership Countries (EUWI+), which is the biggest commitment of the EU to the water sector in the EaP countries, helps Armenia, Azerbaijan, Belarus, Georgia, Moldova, and Ukraine to bring their legislation closer to EU policy in the field of water management, with a main focus on the management of transboundary river basins. It supports the development and implementation of pilot river basin management plans, building on the improved policy framework and ensuring a strong participation of local stakeholders.</p><p>In 2019, with the support of EUWI+, groundwater experts from Ukraine and the Republic of Belarus identified transboundary groundwater bodies (GWBs) in the Dnipro River Basin of Ukraine and the Republic of Belarus. In total eight (3 unconfined and 5 confined) transboundary GWBs in Ukraine were identified as transboundary linked with six GWBs in Belarus. As some of these GWBs are significantly large, follow-up studies in 2020 aimed at identifying those sub parts of the GWBs which are subject to transboundary groundwater interaction. Finally, on both sides of the border, transboundary corridors at a distance of 50 km from the state border were identified as sub-zones of the existing large GWBs. This distance was chosen to capture the recharge areas of the zone of active water exchange (watersheds) and the areas of groundwater discharge (river valleys).</p><p>The investigated transboundary territory is located in Polissia, a zone of excessive moisture, where the GWBs are mainly recharged by precipitation - the unconfined GWBs all over the whole territory, the confined GWBs at places where shallow water-bearing rocks occur. In the transboundary zone, the regional recharge area is located in the Ukrainian Shield; most of the aquifers are recharged on its slopes. The direction of groundwater flow is from the Ukrainian Shield towards the artesian basins in Belarus. </p><p>The Ukrainian part of the territory, where the confined aquifers are recharged, is characterised by minor anthropogenic pressures - very low population density and no large industrial enterprises. Therefore, impacts from the Ukrainian side on the GWBs in Belarus are limited. In contrast, the border area in the Republic of Belarus is one of its most developed industrial regions.</p><p>The analysis showed that the groundwater monitoring network in the Ukrainian 50-km transboundary zone has practically been destroyed due to long-term underfunding and it requires substantial restoration. In Belarus, the monitoring network is quite representative and requires some improvements; in some GWBs  the monitoring network is unevenly distributed and in some GWBs, the number of monitoring wells is insufficient</p><p>Within this study a comprehensive set of analytical material on geological-hydrogeological, hydrogeochemical, hydrodynamic aspects of the study area was collected, a number of open issues were identified, which will substantially contribute to the development and harmonization of not only the groundwater monitoring system of the transboundary territory of the Pripyat and Dnieper river basins in Ukraine and the Republic of Belarus, but also the groundwater monitoring system of the countries as a whole.</p>


2020 ◽  
Author(s):  
Nana Kitiashvili ◽  
Merab Gaprindashvili ◽  
Christoph Leitner ◽  
Franko Humer

<p>Georgia is among the countries which have fresh groundwater distinguished for significant resources and drinking qualities of naturally high quality. Hydrogeological exploration and monitoring works for the purpose of identification, study and protection of fresh groundwater were not conducted in the period of 1990–2013. Considering the long-term termination of centralized researches and the intensively increasing anthropogenic pressures on the environment and on water in particular, the assessment and protection of groundwater resources becomes a very pressing issue. For this purpose, in 2013, on initiative of the Geology Department of LEPL National Environmental Agency of Georgia and the Czech Development Agency, restoration of the hydrogeological monitoring network and research of fresh groundwater using modern methodology began. The modern equipment was gradually installed on the water objects to obtain information about quantitative and qualitative characteristics in "online" mode and taking water samples for chemical and bacterial analysis twice a year. Currently, 56 water points (mainly wells) are being monitored. The database on quantitative and qualitative characteristics of fresh groundwater of Georgia is being expanding based on information received online from water points, fieldwork results, laboratory analyzes (chemical and bacteriological), and on the processing, analyzing and generalizing of the collected actual materials. As the issue concerns fresh groundwater (which is used by at least 90% of the population), it’s necessary to expand the state monitoring network. According to the EU Water Framework Directive, based on the basin management principles of water resources, conduct of researches is granted particular significance in the trans-boundary zone.</p><p>The „European Union Water Initiative Plus for Eastern Partnership (EaP) Countries (EUWI+)″, which is the biggest commitment of the EU to the water sector in the EaP countries, helps Armenia, Azerbaijan, Belarus, Georgia, Moldova and Ukraine to bring their legislation closer to EU policy in the field of water management, as identified by the EU Water Framework Directive. The EUWI+ project addresses existing challenges in both development and implementation of efficient management of water resources.. Monitoring data are an important basis for water management, for risk, status and trend assessment and for the design and implementation of an effective and cost-efficient program of measures .</p><p>Within the EUWI+ project, the following key activities were undertaken in Georgia: „Delineation and characterization of groundwater bodies and the design of a groundwater monitoring network in the Alazani-Iori and Khrami-Debed River Basin Districts in Georgia“, „Performed hydrogeological preliminary field works in the Alazani-Iori and Khrami-Debed River Basin“. Currently „Geophysical, isotope, hydrochemical, bacteriological and hydrodynamic assessment of twelve selected wells to be included in the national groundwater monitoring network in the Alazani-Iori River Basin District in Georgia“ is in progress. The results of this study are a basis for the improvement of the groundwater monitoring network and the development of River Basin Management Plans. As a part of the EUWI+ project, several new monitoring stations are planned.</p><p>The results are important in the process of implementation of integrated management of water resources, which should finally ensure sustainable management of water resources and reliable health protection of the population.</p>


Author(s):  
Mehdi Komasi ◽  
Hesam Goudarzi

Abstract Optimal groundwater monitoring networks have an important role in water resources management. For this purpose, two scenarios were presented. The first scenario designs a monitoring network and the second scenario chooses optimal wells from the existing ones in the study area of the monitoring network. At the first step, a database including groundwater elevation in potential wells was produced using the Kriging method. The optimal monitoring network in the first scenario was determined by preset conventions and found by the non-dominated sorting genetic algorithm (NSGA-II). In the second scenario, the optimal monitoring network was determined by entropy theory through calculating entropy for each of the 29 observation wells. Finally, the first scenario obtained a network with 12 observation stations showing root mean square error (RMSE) value given as 0.61 m. Comparison between entropy of rainfall and groundwater level time series in the first scenario had the same variation. The optimal monitoring network in the first scenario has been able to reduce the number of monitoring stations by 60% in comparison with the existing observation network. The second scenario used entropy theory and calculated the energy of each of the 29 observation wells which obtained a monitoring network with 11 stations.


2020 ◽  
pp. 91-94
Author(s):  
N. B. Agarkov ◽  
◽  
V. V. Khaustov ◽  
A. M. Malikov ◽  
N. G. Karpenko ◽  
...  

In accordance with the ‘Requirements for Monitoring Solid Mineral Deposits’, groundwater monitoring is carried out in the area of the actual mineral deposit and man-made mining facilities, as well as in the zone of significant influence of the field development and other production activities of mining, which affect the subsoil and other components of the natural environment. The development of an underground water monitoring network using mathematical modeling is shown, the existing monitoring network is analyzed, the model of mass transfer of the main pollutant of underground water is developed, and the predictive calculations of mass transfer are performed. The migration model of the test area was created using MT3D program, which allows 3D modeling of mass processes in the flow of underground water. The boundaries of the model area are determined subject to the outline of the catchment area around the quarry, the project increase in depth and the project cut-back in the quarry, as well as to the presence of natural and man-made sources and facilities which can have influence on groundwater regime. The monitoring system allows regular-based observations toward prediction of changes in the condition of underground waters under the influence of the large-scale water withdrawal and other induced and natural factors. The introduction of such monitoring system can enable prevention of prevention of likely changes in the condition of groundwater and proper adjustment of drainage system operation. The numerical modeling data made it possible to optimize the cost of additional inspection well drilling.


Author(s):  
B. Korzhenevsky ◽  
Gleb Tolkachev ◽  
Nikolay Kolomiycev

The problems of modern geological ecology associated with the study of pollution of sediments of water bodies by heavy metals are considered. The Volga River basin is quite heterogeneous, both in geomorphological and hydrological terms, and in thechnogenical development and usage. A fourrank taxonomy is presented for the selection of sites for monitoring, based on a combination of natural, landscape, climatic and thechnogenical factors. To the largest – the highest taxon – sites of the Ist category – bowls of reservoirs with the slopes and the urban zones, industrial and agricultural structures located within them are carried. Within these areas are allocated to smaller taxa, areas category IInd are the industrial and urban zones, areas category IIIrd are the small rivers without significant contamination and areas category IVth to conduct special observations. The examples of special observations in the study of the annual migration of heavy metals in the system «bottom sediments – water column» on the Ivankovo reservoir are highlighted. The investigations were carried out under the conditions of the standard flow rate for this reservoir and in the conditions of slow water exchange.


2018 ◽  
Vol 14 (01) ◽  
pp. 4
Author(s):  
Wang Weidong

To improve the efficiency of the remote monitoring system for logistics transportation, we proposed a remote monitoring system based on wireless sensor network and GPRS communication. The system can collect information from the wireless sensor network and transmit the information to the ZigBee interpreter. The monitoring system mainly includes the following parts: Car terminal, GPRS transmission network and monitoring center. Car terminal mainly consists by the Zigbee microcontroller and peripherals, wireless sensor nodes, RFID reader, GPRS wireless communication module composed of a micro-wireless monitoring network. The information collected by the sensor communicates through the GPRS and the monitoring center on the network coordinator, sends the collected information to the monitoring center, and the monitoring center realizes the information of the logistics vehicle in real time. The system has high applicability, meets the design requirements in the real-time acquisition and information transmission of the information of the logistics transport vehicles and goods, and realizes the function of remote monitoring.


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