scholarly journals Hydrogeochemical properties and the exhaustion groundwater reserve from Dammam aquifer at Al-Najaf Governorate, middle Iraq

2021 ◽  
Vol 1999 (1) ◽  
pp. 012158
Author(s):  
Mohanad R.A. Al-Owaidi ◽  
Arshad W.A. Al-Enezy ◽  
Mohammed L. Hussein
Keyword(s):  
Dammam Aquifer ◽  
Groundwater Reserve ◽  
Hydrogeochemical Properties

scholarly journals CHARAKTERISTIKA ANOMÁLNÍHO SKAPU V PUNKEVNÍCH JESKYNÍCH (MORAVSKÝ KRAS)

2014 ◽  
Vol 21 (1-2) ◽  
Author(s):  
Pavel Pracný ◽  
Jiří Faimon ◽  
Ludvík Kabelka
Keyword(s):  
Electric Conductivity ◽  
Water Flow ◽  
Flow Regimes ◽  
Flow Path ◽  
Water Formation ◽  
Moravian Karst ◽  
One Year ◽  
Karst Processes ◽  
Hydrogeochemical Properties

Cave speleothems grow from supersaturated dripwaters and store information about various karst processes along the water flow path. Anomalous non-saturated waters may occur if (1) rainfall water passes very rapidly through karst profile or if (2) two saturated waters of different compositions are mixed. The low mineralization close to saturation could be reached also as (3) result of calcite precipitating prior the water enters the cave. The hydrogeochemistry of four dripwaters in the Punkva Caves (Moravian Karst) was systematically studied for anomalous properties during one-year period. The drips are situated in a passage behind Přední Dóm Chamber (CP1 and CP2, 24 samples each), in Tunnel Corridor (TC1, 24 samples), and in Zadní Dóm Chamber (ZD1, 6 samples). The dripwaters CP1, CP2, and ZD1 show various flow regimes but very similar hydrogeochemical properties: electric conductivity (EC = 550–630 μS/cm), saturation (SIcalcite = 0.8–1.2), and Mg/Ca ratio (1000*(Mg/Ca) = 15–20). In contrast, the dripwater TC1 shows stable drip rate and EC = 275–350 μS/cm, SI = -0.1 to 0.3, and almost thrice as high Mg/Ca ratios as other drips. High and stable discharge of the drip TC1, combined with low EC, SI close to zero, and high Mg/Ca ratio indicate that a prior precipitation of calcite is responsible for the anomalous composition of the dripwater. The slightly negative SI values that were occasionally observed indicate that further minor processes probably participate on the water formation.

scholarly journals Bencana Kekeringan di Wilayah Taman Bumi Nasional Karangsambung-Karangbolong: Pengontrol, Dampak, dan Ketahanan

2021 ◽  
Vol 12 (1) ◽  
pp. 57
Author(s):  
Sugeng Purwo Saputro ◽  
Dwi Ratih Purwaningsih ◽  
Rahmi Mulyasari
Keyword(s):  
Local Governments ◽  
Secondary Data ◽  
Metamorphic Rocks ◽  
Field Observations ◽  
Danger Zone ◽  
Infiltration Rates ◽  
Geological Conditions ◽  
Groundwater Reserves ◽  
Groundwater Reserve

ABSTRAKKaranggayam dan Karangsambung di Kabupaten Kebumen termasuk ke dalam zona bahaya tinggi terdampak bencana kekeringan. Kedua daerah tersebut memiliki variasi batuan yang lengkap mulai dari batuan beku, batuan sedimen, hingga batuan metamorf, dan termasuk ke dalam wilayah Taman Bumi Nasional Karangsambung-Karangbolong. Prediksi dan penentuan area yang masih memiliki cadangan air tanah menjadi hal yang vital untuk segera dilakukan guna mengurangi dampak dari bencana tersebut, ditunjang dengan pengetahuan mengenai pengontrol utama dari parameter penyebab bencana kekeringan di daerah Karanggayam dan Karangsambung. Observasi lapangan dan analisis geospasial dipilih menjadi metode karena dinilai lebih efisien untuk penelitian ini, serta didukung dengan hasil analisis statistik dari data sekunder. Fisiognomi tanah, kondisi geologi, dan angka infiltrasi yang merupakan bagian dari delapan karakteristik geografi dan geomorfologi, dinilai menjadi pengontrol utama dari parameter penyebab bencana kekeringan yang terjadi di Karanggayam dan Karangsambung. Ketiga karakteristik tersebut berperan dalam mempersempit kemungkinan area cadangan air tanah menjadi hanya berada di sekitar lembah antiklin dan lereng sayap antiklin bagian selatan-tenggara (S-SE). Seluruh hasil penelitian ini dapat berfungsi untuk membantu pemerintah daerah dan pengelola taman bumi dalam membuat berbagai macam perencanaan dan kebijakan terkait Taman Bumi Nasional Karangsambung-Karangbolong.Kata kunci: bencana, cadangan air tanah, Kebumen, kekeringan, taman bumiABSTRACTKaranggayam and Karangsambung in Kebumen Regency included in the high danger zone affected by drought. Both areas have complete rock variations ranging from igneous, sedimentary, to metamorphic rocks, and are included in the Karangsambung-Karangbolong National Geopark. Prediction and determination of areas that still have groundwater reserves are vital to be carried out immediately to reduce the disaster’s impact, supported by the knowledge of the main controllers of drought-causing parameters in both areas. Field observations and geospatial analysis were chosen because they were considered more efficient and supported by the results of statistical analysis from secondary data. Soil physiognomy, geological conditions, and infiltration rates are considered the main controllers causing drought disasters in Karanggayam and Karangsambung areas. These three characteristics narrow down the possibility that the groundwater reserve area is only around the anticline valley and the south-southeast (S-SE) side of the anticline wing. All of the results of this study can help local governments and geopark management to make various plans and policies related to the Karangsambung-Karangbolong National Geopark.Keywords: disaster, groundwater reserves, Kebumen, drought, geopark

scholarly journals The Fate of Disi Aquifer as Stratigic Groundwater Reserve for Shared Countries (Jordan and Saudi Arabia)

2011 ◽  
Vol 03 (10) ◽  
pp. 711-714 ◽  
Author(s):  
Alsharifa Hind Jasem ◽  
Maisa'a Shammout ◽  
Dheaya AlRousan ◽  
Marwan AlRaggad
Keyword(s):  
Saudi Arabia ◽  
Groundwater Reserve

scholarly journals Geological and hydrogeochemical properties of geothermal systems in the southeastern region of Turkey

Geothermics ◽  
2019 ◽  
Vol 78 ◽  
pp. 255-271 ◽  
Author(s):  
A. Baba ◽  
F. Şaroğlu ◽  
I. Akkuş ◽  
N. Özel ◽  
M.İ. Yeşilnacar ◽  
...  
Keyword(s):  
Geothermal Systems ◽  
Southeastern Region ◽  
Hydrogeochemical Properties

Hydrogeochemical properties of groundwater in parts of Abakaliki City, southeastern Nigeria

2012 ◽  
Vol 19 (2) ◽  
pp. 53-61 ◽  
Author(s):  
Bernard I. Odoh ◽  
Ahamefula U. Utom ◽  
Hilary N. Ezeh ◽  
Boniface C. E. Egboka
Keyword(s):  
Southeastern Nigeria ◽  
Hydrogeochemical Properties

Management and sustainability of groundwater resources in Bahrain

Water Policy ◽  
2006 ◽  
Vol 8 (2) ◽  
pp. 127-145 ◽  
Author(s):  
Waleed K. Zubari ◽  
Ibrahim J. Lori
Keyword(s):  
Agricultural Sector ◽  
Groundwater Resources ◽  
Demand Management ◽  
Groundwater Balance ◽  
Effective Implementation ◽  
The Past ◽  
Water Demands ◽  
Dammam Aquifer ◽  
Management And Conservation ◽  
Severe Deterioration

In Bahrain, groundwater in the Dammam aquifer is the only natural source of relatively freshwater to meet the increasing demands for water. Heavy reliance on groundwater, particularly by the agricultural and municipal sectors, and its prolonged overexploitation over the last four decades have led to severe deterioration in its water quality. Currently, most of the original groundwater reservoir has been lost to salinization. In the past, groundwater management efforts were concentrated principally on supply management, where great efforts have been made to develop additional non-conventional and conventional water sources to alleviate groundwater stress, while demand management, conservation and protection of groundwater resources have not received much attention or emphasis. Based on future anticipated management efforts and programs, three alternative policy scenarios are considered in investigating groundwater balance and sustainability in Bahrain for the period 2002–2010: (1) supply augmentation and stabilization of agricultural water demands, (2) supply augmentation and demand management in the agricultural sector and (3) supply augmentation and unrestricted agricultural sector water demands. The current groundwater deficit could be lowered significantly in the second and the first scenarios. Evidently, the second scenario is to be preferred and constitutes an appropriate base for securing sustainable development of groundwater resources. However, it will depend on the effective implementation of the proposed demand management and conservation programs in the agricultural sector with their socio-economic, as well as political constraints and risks.

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