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Full-Text Articles in Earth Sciences
Groundwater Potential Mapping Using The Integration Of Ahp Method, Gis And Remote Sensing: A Case Study Of The Tabelbala Region, Algeria, Ahmed Bennia, Ibrahim Zeroual, Abdelkrim Talhi, Lahcen Wahib Kebir
Groundwater Potential Mapping Using The Integration Of Ahp Method, Gis And Remote Sensing: A Case Study Of The Tabelbala Region, Algeria, Ahmed Bennia, Ibrahim Zeroual, Abdelkrim Talhi, Lahcen Wahib Kebir
Bulletin of the Mineral Research and Exploration
Recently, groundwater resources are assessed and evaluated using Geographic Information System (GIS) and remote sensing technologies due to their effectiveness and wide spatial coverage. This work aims to identify groundwater potential areas in the Tabelbala region which lies in the Algerian desert in order to help for the solution of water resources shortages. GIS and remote sensing are employed in the preparation of the controlling factors such as lithology, lineaments, drainage network, slope, land use/land cover, topographic wetness index, and elevation. Statistical Analysis, as well as interpretation of remote sensing data, allow the extraction of important features about the study …
Integration Of Structural, Hydrogeological And Thermal Remote Sensing Data For The Determination Of Geothermal Capacity: Edremit (Balıkesir) Basin As A Case Study, Önder Kayadi̇bi̇, Şule Gürboğa, Hafize Akilli, Serap Arikan, Sevilay Tan, Zehra Deveci̇ Aral, Halim Mutlu
Integration Of Structural, Hydrogeological And Thermal Remote Sensing Data For The Determination Of Geothermal Capacity: Edremit (Balıkesir) Basin As A Case Study, Önder Kayadi̇bi̇, Şule Gürboğa, Hafize Akilli, Serap Arikan, Sevilay Tan, Zehra Deveci̇ Aral, Halim Mutlu
Bulletin of the Mineral Research and Exploration
Basins formed on active strike-slip faults are important prospect areas for geothermal energy exploration since the crust gets thinner in these areas and tectonic structures provide favorable conditions for heat-fluid circulation and transportation. The objective of the recent study is to evaluatethe geothermal capacity of the Edremit Basin utilizing tectonic, geological, and hydrogeological studies, combining remote sensing (land surface temperature-LST, hydrothermal alteration, and multi-temporal InSAR (MT-InSAR) assessments). We present structural literature data and the results of field mapping, which revealed the geometry, kinematics, and dynamics of structural features, geological units as geothermal system components, thermal and cold water chemistry, and …
Molecular Genetic Analysis Of Stygobiotic Shrimps Of The Genus Xiphocaridinella (Crustacea: Decapoda: Atyidae) Reveals A Connection Between Distant Caves In Central Abkhazia, Southwestern Caucasus, Ivan Marin, Ilya Turbanov
Molecular Genetic Analysis Of Stygobiotic Shrimps Of The Genus Xiphocaridinella (Crustacea: Decapoda: Atyidae) Reveals A Connection Between Distant Caves In Central Abkhazia, Southwestern Caucasus, Ivan Marin, Ilya Turbanov
International Journal of Speleology
Based on the morpho-genetic study of stygobiotic shrimps from the genus Xiphocaridinella Sadowsky, 1930 (Crustacea: Decapoda: Atyidae), a hydrogeological connection of a number of distant caves in Central Abkhazia of the southwestern Caucasus is satisfied, which indicates the possibility of using biospeleological studies in some cases to identify karst hydrosystems together with traditional hydrogeological methods. Moreover, a new stygobiotic atyid shrimp from the genus Xiphocaridinella, X. kelasuri sp. n., is described based on morphology and analysis of mitochondrial cytochrome oxidase I DNA sequences from three distant caves. The new species is genetically divergent from relatives and phylogenetically related to …
Characterization Of Surface Geology And Hydrogeology In The Upper Ulua River Basin, Honduras, C. Renee Sparks, Issac J. Jacques, Cheryl L. Verbree, Thomas J. Timmermans, Stuart Dykstra
Characterization Of Surface Geology And Hydrogeology In The Upper Ulua River Basin, Honduras, C. Renee Sparks, Issac J. Jacques, Cheryl L. Verbree, Thomas J. Timmermans, Stuart Dykstra
The Compass: Earth Science Journal of Sigma Gamma Epsilon
This research includes a hydrogeologic assessment in and around La Union, Honduras to determine the contribution of groundwater to the surface water system and understand the geological control of groundwater storage and movement. Field methods were employed and focused on spring characterization, geochemical signatures, and structural data. Field data was gathered, and locations determined using cellular-integrated GPS signal and the Fulcrum mapping software mobile application. During the summer of 2017, data on 111 geologic points and 34 water points were collected to understand the hydrogeology of the region. Streams and springs were monitored for pH, flow characteristics and conductance as …
Hydrogeochemical Fingerprints Of A Mixohaline Wetland In The Mediterranean: Güllük Coastal Wetland Systems- Gcws (Muğla, Turkey), Adi̇le Meli̇s Somay Altaş
Hydrogeochemical Fingerprints Of A Mixohaline Wetland In The Mediterranean: Güllük Coastal Wetland Systems- Gcws (Muğla, Turkey), Adi̇le Meli̇s Somay Altaş
Turkish Journal of Earth Sciences
The Güllük coastal wetland system (GCWS), which is located at the contact point of the Menderes Massif and Lycian Nappe, consists of both brackish karstic [Güllük Lagoon wetland (GLW)] and saline [Boğaziçi-Tuzla (Bargylia) coastal wetland (BTW)] ecosystems in western Turkey, and is under protection as a national wetland of importance. This area is important for its unique wetland features, aquaculture, tourism, agriculture, Bodrum airport, and Güllük port facilities. The aim of this study was to evaluate the GLW and BTW, both hydrogeologically and hydrogeochemically, for the first time together. The mixohaline GCWS is recharged from precipitation, streams, and brackish karstic …
Creation Of A Numerical Mathematical Model Of Geofiltration Processes And Its Adaptation For Solving Epignosic And Forecast Problems (In Terms Of Gurlen District Of Khorezm Region), Tolkun Mirakhmedov
Creation Of A Numerical Mathematical Model Of Geofiltration Processes And Its Adaptation For Solving Epignosic And Forecast Problems (In Terms Of Gurlen District Of Khorezm Region), Tolkun Mirakhmedov
Bulletin of National University of Uzbekistan: Mathematics and Natural Sciences
The article considers the creation of a mathematical model of geofiltration processes in Gurlen District. Methods for calculating and developing a mathematical model and algorithms were carried out, and applied software was developed, and the developed geofiltration mathematical model was adapted to solve the epignosic and forecast problems of the area under consideration.
Investigation Of Güllük (Muğla) Wetland By Stable Isotopes (Δ18o, Δd), Melis A. Somay
Investigation Of Güllük (Muğla) Wetland By Stable Isotopes (Δ18o, Δd), Melis A. Somay
Bulletin of the Mineral Research and Exploration
Wetlands play an important role in the hydrologic cycle. This investigation was completed to determine the origin of waters and recharge-discharge areas using stable isotopes (δ18O and δD) which are fingerprints of the water in Güllük (Muğla) wetland. This area is important both economically and in terms of aquaculture environment in Turkey. Sample locations were selected from not only wetlands but also the possible recharge area that consists of karstic springs and streams. EC (Electrical Conductivity) of the waters range between 5080-41000 µS/cm, except streams. δ18O and δD contents of the samples ranged from -6.00‰ to 0.50‰ and from -29.1‰ …
Spatial Distribution Of Soda Straws Growth Rates Of The Coufin Cave (Vercors, France), Yves Perrette, Stéphane Jaillet
Spatial Distribution Of Soda Straws Growth Rates Of The Coufin Cave (Vercors, France), Yves Perrette, Stéphane Jaillet
International Journal of Speleology
The Choranche Cave system (Vercors, France) is an excellent locality for measuring the growth rates of large numbers soda straws. This is especially the case for the Coufin Cave, as enlargement of the cave entrance in 1875 led to a change in stalactite color from brown to white, thus providing a reliable chronomarker. The date of this brown-to-white calcite transition has been confirmed by lamina counting. We measured and georeferenced the growth-lengths of 306 soda straws in a 1m2 area of the roof of the Coufin Cave entrance chamber. Because of the very slow and sometimes inexistent water feeding …
Thermo-Mineral Waters From The Cerna Valley Basin (Romania), Ioan Povara, Georgel Simion, Constantin Marin
Thermo-Mineral Waters From The Cerna Valley Basin (Romania), Ioan Povara, Georgel Simion, Constantin Marin
Studia UBB Geologia
In the south-west of the Southern Carpathians, upstream from the confluence of Cerna with Belareca, an aquifer complex has developed, strongly influenced by hydrogeothermal phenomena, acting within two major geological structures, the Cerna Syncline and the Cerna Graben. The complex consists mainly in Jurassic and Cretaceous carbonate rocks, as well as in the upper part of the Cerna Granite, highly fractured, tectonically sunken into the graben. As a result of the tectonic processes which occurred after the end of the Jurassic-Cretaceous sedimentation cycle, limestones may be encountered at 1100 m altitude in the Mehedinţi Mountains, at 150 ¬¬600 m in …
Tracer Tests In Karst Hydrogeology And Speleology, Nico Goldscheider, Joe Meiman, Michiel Pronk, Christopher Smart
Tracer Tests In Karst Hydrogeology And Speleology, Nico Goldscheider, Joe Meiman, Michiel Pronk, Christopher Smart
International Journal of Speleology
This article presents an introduction to the fundamentals of tracing techniques and their application in cave and karst environments, illustrated by case studies from the Mammoth Cave, USA, and a small experimental site in Switzerland. The properties and limitations of the most important artificial tracers are discussed, and the available methods of tracer injection, sampling, online monitoring and laboratory analysis are presented. Fully quantitative tracer experiments result in continuous or discrete concentration-time data series, i.e. breakthrough curves, and concomitant discharge data, which make it possible to obtain detailed information about groundwater flow and contaminant transport. Within the frame of speleological …
The Role Of The Epikarst In Karst And Cave Hydrogeology: A Review, Paul W. Williams
The Role Of The Epikarst In Karst And Cave Hydrogeology: A Review, Paul W. Williams
International Journal of Speleology
The epikarst (also known as the subcutaneous zone) comprises highly weathered carbonate bedrock immediately beneath the surface or beneath the soil (when present) or exposed at the surface. Porosity and permeability are higher near the surface than at depth, consequently after recharge percolating rainwater is detained near the base of the epikarst, the detention ponding producing an epikarstic aquifer. Such an aquifer is found only where the uppermost part of the vadose zone is very weathered compared to the bedrock at depth. Sometimes this contrast in porosity and permeability does not occur either because the epikarst has been scraped off …
Surface Cover Infiltration Index: A Suggested Method To Assess Infiltration Capacity For Intrinsic Vulnerability In Karstic Areas In Absence Of Quantitative Data, Levent Tezcan, Mehmet Ekmekci
Surface Cover Infiltration Index: A Suggested Method To Assess Infiltration Capacity For Intrinsic Vulnerability In Karstic Areas In Absence Of Quantitative Data, Levent Tezcan, Mehmet Ekmekci
International Journal of Speleology
Karst is a hydrogeological environment of importance not only for its water resources potential but also for its scenic and economic potential, thereby increasing the intensity of human impact. The uniqueness of karst in this regard stems from its high sensitivity and vulnerability to imposed pressures and its distinctive response to these pressures. Therefore, a clear definition and formulation of the concept of ‘intrinsic vulnerability’ is essential for the design of vulnerability and/or management criteria of the karstic system as a resource. In this regard, the recharge rate, the amount of water passing through the unsaturated zone into the aquifer, …
Evolution Of Golpazari-Huyuk Karst System (Bilecik-Turkey): Indications Of Morpho-Tectonic Controls, Mehmet Ekmekci, Lütfü Nazik
Evolution Of Golpazari-Huyuk Karst System (Bilecik-Turkey): Indications Of Morpho-Tectonic Controls, Mehmet Ekmekci, Lütfü Nazik
International Journal of Speleology
The Golpazari-Huyuk karst system is located in the Central Sakarya Basin whose geomorphologic evolution is mainly controlled by the Post-Miocene epirogenic continental rise. Drastic change in the drainage pattern and dissection of the carbonate platform were the major consequences of this tectonic movement. Rapid incision of the Sakarya river changed the position of the erosion base which consequently distorted the direction of surface and subsurface flow. The Golpazari and Huyuk plains are two topographically distinct, flat bottomed geomorphic features separated by a carbonate rock relief. The difference in elevation between these 10 km distant plains is 350 m. Morphological, geological …
Human Impact On Karst: The Example Of Lusaka (Zambia), Jo De Waele, Roberto Follesa
Human Impact On Karst: The Example Of Lusaka (Zambia), Jo De Waele, Roberto Follesa
International Journal of Speleology
Lusaka, the capital of Zambia with over 2,000,000 inhabitants, is built on an extensive plateau composed mainly of schists and dolomitic marbles, constituting a very important aquifer that provides the city with almost half of its drinking water needs. Recent demographic growth, leading to uncontrolled urban expansion, and mismanagement of the water resource and of urban waste has lead, in the past 20 years, to an overexploitation of the aquifer and to a generalised water quality depletion, putting in serious danger the future social and economical development of the capital. This third world city has, for these reasons, become a …