Temat: karst - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Spatio-temporal variation of karst spring parameters for characterizing of the aquifer system of Watuputih Area, Indonesia
Autorzy:: Setiawan, Taat
Syah Alam, Boy Y.C.S.S.
Haryono, Eko
Hendarmawan, Hendarmawan
Powiązania:: https://bibliotekanauki.pl/articles/946921.pdf
Data publikacji:: 2020
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: flow system
hydrochemical properties
Indonesia
karst aquifers
spring variability
Opis:: There are several springs with the large discharge around the Watuputih Karst Hills area that playing a crucial role in supplying water for both domestic and irrigation needs. The springs are located in the fault and fold zones of the Rembang anticlinorium system. This study was designed to determine the characteristics of karst aquifers from one year of monthly spatio-temporal data on discharge parameters and physico-chemical properties (temperature, pH, EC, Ca²⁺, Mg²⁺, HCO_3–) of the four major springs, namely Brubulan Tahunan, Sumbersemen, Brubulan Pesucen, and Sendang Sayuran. It used statistical calculations to characterize spring discharge and hydrochemical variations, as well as bivariate correlation analysis and flow-duration curve (FDC). The variability index (I_v), variability (V), and spring coefficient of variation parameters (SCVP) classified Brubulan Tahunan and Sumbersemen as springs producing stable, fairly constant discharge with low variations but characterized Brubulan Pesucen as having unstable, varying discharge with moderate variations. The results showed gently sloping hydrograph, low variations in discharge and hydrochemical properties, a relatively prolonged response of discharge and CO₂-H₂O-CaCO₃ interaction to rainfall, and slope changes in the FDC. In other terms, although the springs are controlled by faults and folds, they have diffuse groundwater storage system in the form of densely fractured and porous media. These findings also indicate a less developed interconnected conduit, although Brubulan Pesucen is relatively more developed than Sumbersemen and Brubulan Tahunan. The geological structure and hydraulic gradient formed between the groundwater recharge and discharge areas are proven to control the amount of spring discharge actively.
Źródło:: Journal of Water and Land Development; 2020, 45; 143-156
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Multicriteria flood mitigation in the Imotsko-Bekijsko Polje (Croatia, Bosnia and Herzegovina)
Ochrona przed powodzią w Dolinie Imotsko-Bekijsko Polje (Chorwacja, Bośnia i Hercegowina)
Autorzy:: Ljubenkov, I.
Powiązania:: https://bibliotekanauki.pl/articles/293221.pdf
Data publikacji:: 2015
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: flood
Imotsko-Bekijsko Polje
karst polje
statistical test
powódź
tereny krasowe
testy statystyczne
Opis:: Imotsko-Bekijsko Polje has an area of 9 500 ha and is one of the biggest karst fields (polje) in the Dinaric Mountains, extending over the territory of two states: Croatia and Bosnia and Herzegovina. Many hydraulic structures (reservoirs, retentions, tunnels, etc.) have been built since the middle of 20^th century in order to protect polje against floods. Therefore, the security from flooding has increased substantially. However, there is still periodical flooding in the southeastern lowest part of the polje. The largest flood in recent times was in January 2010, when 2676 ha (28% of the area) was flooded. The polje is a typical karst with very complex hydrological and hydrogeological relations. In this paper two hydrological stations, Nuga at the lowest part and Kamenmost in the central part of the polje with respectable hydrological series, are statistically analysed. In particular, the efficiency of existing hydraulic structures for flood mitigation is estimated. The research points out that floods in Imotsko-Bekijsko Polje are largely influenced by water management objects (reservoir, retention, tunnel) and only indirectly by precipitation.
Imotsko-Bekijsko Polje ma powierzchnię 9500 ha i jest jedną z największych dolin krasowych w Górach Dynarskich. Teren doliny rozciąga się na terytorium dwóch państw – Chorwacji oraz Bośni i Hercegowiny. Budowle hydrotechniczne (zbiorniki retencyjne, tunele itp.) zostały zbudowane w połowie XX wieku w celu ochrony doliny przed powodziami. W związku z tym bezpieczeństwo powodziowe znacznie wzrosło, jednak występują jeszcze okresowe powodzie w południowo-wschodniej, najniższej części doliny. Największa powódź w ostatnim czasie zdarzyła się w styczniu 2010 r., zalane zostało wówczas ok. 2676 ha, co stanowi 28% powierzchni terenu. Polje jest typowo krasowym terenem o bardzo złożonymi stosunkami hydrologicznymi i hydrogeologicznymi. W niniejszej pracy analizie statystycznej poddano dane z dwóch stacji hydrologicznych – Nuga w najniższej części i Kamenmost w środkowej części doliny. Szczególnie analizowano efektywność istniejących struktur hydrologicznych dla łagodzenia skutków powodzi. Wyniki badań wskazują, że powodzie w Imotsko-Bekijsko Polje wywoływane są głównie przez obiekty gospodarki wodnej (zbiorniki retencyjne, tunele itp.) i tylko pośrednio zależą od opadów atmosferycznych.
Źródło:: Journal of Water and Land Development; 2015, 26; 73-81
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: The organisation of control over non-centralized water supply under the risk of groundwater dynamics disturbance in karst areas
Autorzy:: Kuzichkin, Oleg R.
Romanov, Roman V.
Dorofeev, Nikolay V.
Grecheneva, Anastasia V.
Vasilyev, Gleb S.
Powiązania:: https://bibliotekanauki.pl/articles/1844418.pdf
Data publikacji:: 2020
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: electrical express-monitoring method
hydrogeological control
karst
non-centralised water supply
water quality
Opis:: The use of non-centralised water supply in remote settlements is currently the only possible option. Monitoring the water quality of such supply sources is a complicated task in such areas, especially when there are active karst processes and difficult groundwater conditions. The application of deterministic analytical models of water supply under the risk of disturbance to groundwater dynamics is not efficient. Significant quantitative and even qualitative changes in groundwater conditions may take place between the calculated points, and the underestimation of these changes in expectation-driven computation models may result in serious geoecological issues. This research studied and justifies the use of adaptive dynamic hydrogeological control in an area of non-centralised water supply based on the identification of key zones of geodynamic karst monitoring and the electrical express-monitoring of water resources. The identification of key zones is based on an integrated analysis of available groundwater information that describes changes in groundwater hydrodynamic conditions at the time of the karst forecast. The development of karst-suffusion processes is accompanied by more intense dynamic changes in local areas of geologic environment compared to the general variation in intensity. Information about the occurrence of destructive groundwater processes by means of selective geodynamic monitoring may thus be obtained much earlier than with environmental geodynamics monitoring as a whole. The experimental hydrogeological control of an area of non-centralised water supply was conducted on the right bank of the Oka River in Nizhny Novgorod region, a locality with an active manifestation of karst processes. Structure and algorithms of space-time processing of hydrogeological control data developed by authors have been used. The approach based on multifrequency vertical electrical sounding (MFVES) method has shown good correspondence with direct borehole observation when measuring depth of the first aquifer. Zones of unsafe water use have been revealed. The results demonstrated the effectiveness of the proposed method and the need for further regular observations of destructive groundwater processes by means of selective hydrogeodynamic monitoring.
Źródło:: Journal of Water and Land Development; 2020, 47; 113-124
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Hydrogeological monitoring of karst activity based on regime observations in the territory of karst lakes
Autorzy:: Kuzichkin, Oleg R.
Romanov, Roman V.
Dorofeev, Nikolay V.
Vasilyev, Gleb S.
Grecheneva, Anastasia V.
Powiązania:: https://bibliotekanauki.pl/articles/1844370.pdf
Data publikacji:: 2021
Wydawca:: Instytut Technologiczno-Przyrodniczy
Tematy:: data processing algorithm
geodynamics
geoelectric facility
hydrogeological monitoring
karst lake
phase-measuring method
Opis:: This article shows that the most sensitive indicator of local and regional karst activity in territories of apparent karst processes is the behaviour of karst lakes. The authors propose a hydrogeological monitoring methodology for the karst process based on the phase-measuring geoelectric control method in the coastal zone of karst lakes. The geoelectric current control of hydrogeological changes in the medium at local levels uses a multi-frequency vertical electric sounding combined with a phase-measuring method of registering the geoelectric signal. These proven methods permit to distinguish variations of spatial parameters and the electric conductivity of several layers at a time. Moreover, they significantly increase the noise resistance and sensitivity of the measuring system. An adaptive algorithm function of the measuring complex for geoelectric monitoring of karst lakes’ coastal zones was developed to control the operation of facilities and data collection systems. Based on an example of a lake where karst processes are active, the key zones of hydrogeological control were identified depending on karst manifestations. The research confirmed the possibility of local and regional monitoring of the development and forecasting of destructive karst-suffosion processes based on hydrogeological regime observations of karst lakes.
Źródło:: Journal of Water and Land Development; 2021, 48; 130-140
1429-7426
2083-4535
Pojawia się w:: Journal of Water and Land Development
Dostawca treści:: Biblioteka Nauki

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