Výsledky vyhľadávania
Názov Direct detection of groundwater accumulation zones in saprock aquifers in tectono-thermal environments Aut.údaje Anthony E. Akpan ... [et al.] Autor Akpan Anthony E. (20%)
Spoluautori Ekwok Stephen Eguba (10%)
Ben Ubong Camilus (5%)
Ebong Ebong Dickson (5%)
Thomas Jewel Emem (5%)
Ekanem Aniekam Martin (5%)
George Nyaknno J. (5%)
Abdelrahman Kamal (5%)
Fnais Mohammed S. (5%)
Eldosouky Ahmed M. (5%)
Andráš Peter 1953- (20%) UMBFP01 - Katedra geografie a geológie
Alarifi Saad S. (10%)
Zdroj.dok. Water. Vol. 15, no 22 (2023), pp. 1-21. - Basel : Multidisciplinary Digital Publishing Institute, 2023 Kľúč.slová podzemné vody podzemné termálne vody saprockové vodonosné vrstvy - saprock aquifers Form.deskr. články - journal articles Jazyk dok. angličtina Krajina Švajčiarsko Anotácia VES data acquired in tectono-thermally disturbed environments sometimes contain outliers when plotted on a bi-logarithmic graph. These noisy datasets usually distort the discernible trend of the VES curve, by plotting abnormally above or below its dominant trend at the point of their occurrence. This type of distortion is different from those arising from other causes such as galvanic and static distortions, which usually affect a segment of a curve without changing the curve’s trend. Allowing these unusual points to remain within the datasets during the data processing and modelling phases always produces unsatisfactory results because their presence usually causes the root-mean-square error to exceed the preset acceptable limit. Consequently, such data points are usually deleted to recover the trend of the curve and generate interpretable models during the traditional curve-smoothening (data processing) phase. This study has shown that these unusual data points are indicative of groundwater accumulation zones in porous medium and can also estimate likely borehole productivities in tectono-thermally disturbed environments. A single-point drop signifies a low-yielding fracture characterized by small apertures. The groundwater yield from this group of fractures can barely support the daily domestic water needs of some families. However, VES curves where two or more points break away from the trend of the curve indicate high-yielding fractures or nonconformities, provided that the resistivity value of the first break-point is lower than those of subsequent ones. The productivity level of this category of fractures is high enough to support the water needs of families. The apparent resistivities of these saturated fractures usually vary between 40 and 500 Wm, depending on the nature of the host rock. These qualitative interpretations have been confirmed by drilling and Water 2023, 15, 3946 17 of 21 pumping test results. Depths to these water-filled fractures, though location-dependent, typically vary between 40 and 100 m in the study area. These saturated fractures are common in locations with high lineament density. Optimal data-quality-management practices—including determining the sensitivity level of the equipment, repeating the measuring process, and changing the potential electrode positions and, where possible, the VES profile orientation—must be implemented to confirm the integrity and subterranean nature of the break-off points. URL Link na plný text Kategória publikačnej činnosti ADC Číslo archívnej kópie 53990 Katal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Báza dát xpca - PUBLIKAČNÁ ČINNOSŤ Odkazy PERIODIKÁ-Súborný záznam periodika 
článok
Názov Biostratigraphy of the late Campanian - Maastrichtian of the Duwi Basin, Red Sea, Egypt Aut.údaje Orabi H. Orabi ... [et al.] Autor Orabi Orabi H. (25%)
Spoluautori Eldosouky Ahmed M. (15%)
Abdelrahman Kamal (10%)
El Gammal Reda M. (10%)
Nallamuthu Malarkodi (10%)
Fnais Mohammed S. (5%)
Andráš Peter 1953- (25%) UMBFP04 - Katedra životného prostredia
Zdroj.dok. Open Geosciences. Vol. 15, no. 1 (2023), pp. 1-26. - Warsaw : De Gruyter Poland, 2023 Kľúč.slová foraminifery biostratigrafia Heslá geogr. Egypt Form.deskr. články - journal articles Jazyk dok. angličtina Krajina Poľsko Anotácia During the Late Campanian, sea-level fluctuation occurred in the form of two chert bands and the topmost conglomeratic phosphate beds (CF8a zone). A great transgression event occurred associated with the global warming (CF8b zone) trend indicated by large double-keeled foraminifera as Globotruncana aegyptiaca Nakkady of oligotrophic conditions. Through the event of CF6/CF5 zones, a gradual increase in the relative abundance of Gublerina rajagopalani Govindan and Planoheterohelix planata (Cushman) and other heterohelicids have been shown to tolerate and thrive in a wide range of environmental conditions as in high-stress environments. Sea-level fall at the CF6 zone and the overlying CF5 boundary marked a warming climate for the Middle Maastrichtian Event. In the latest CF4 records, the beginning of the decrease in planktic/benthic ratio, globotruncanids, rugoglobigerinids, and heterohelicids indicating a fall in sea level coincided with the CF4/CF3 and the development of dark grey shales in a regressive regime. The observed low abundance of planktic specimens may be due to the presence of pyrite with black shale interval suggesting low oxygen condition. The latest zones CF3, CF2, and CF1 are generally characterized by heterohelicids blooms specially Planoheterohelix globulosa (Ehrenberg), and a gradual decrease in diversity associated with the warming phase before the K/Pg boundary event, implying high biotic stress to even absent of Guembelitria cretacea species through CF3–CF1 zones. Pseudotextularia elegans (Rzehak) occurs in the zones CF4 and CF2 warming of phases 1 and 2 of Deccan Trap Volcanic. The absence of P. elegans (Rzehak) in the zone (CF3) is postulated due to a tectonic cause (maximum cooling of Deccan Trap Volcanic) whereas its absence in the zone (CF1) was due to regression of phase 2. URL Link na plný text Kategória publikačnej činnosti ADC Číslo archívnej kópie 52900 Katal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Báza dát xpca - PUBLIKAČNÁ ČINNOSŤ Odkazy PERIODIKÁ-Súborný záznam periodika článok
Názov Contribution of advanced edge-detection methods of potential field data in the tectono-structural study of the southwestern part of Cameroon Aut.údaje Alain Rodrigue Nzeuga ... [et al.] Autor Nzeuga Alain Rodrigue (20%)
Spoluautori Ghomsi Franck Eitel (10%)
Pham Luan Thanh (5%)
Eldosouky Ahmed M. (10%)
Aretouyap Zakari (5%)
Kana Janvier Domra (5%)
Yasmine Zambou Tsopgni (5%)
Fokem Alpha Baster Kenfack (5%)
Nouayou Robert (5%)
Abdelrahman Kamal (5%)
Fnais Mohammed S. (5%)
Andráš Peter 1953- (20%) UMBFP04 - Katedra životného prostredia
Zdroj.dok. Frontiers in Earth Science. Vol. 10 (2022), pp. 1-15. - Lausanne : Frontiers Media S.A., 2022 Kľúč.slová geologické štruktúry sedimenty - sediments Heslá geogr. Kamerun Form.deskr. články - journal articles Jazyk dok. angličtina Krajina Švajčiarsko Anotácia The southwest part of Cameroon is composed of a range of geological structures and sedimentary basins, whose geological history dates from the Cretaceous, and their establishment would have originated from the opening of the South Atlantic. Among these structures, the most important is the Cameroon Volcanic Line, generally denoted CVL, followed by the southern part of the Central African Shear Zone (CASZ) called the Foumban Shear Zone (FSZ), the Ntem Complex, the Benue Trough, the northern margin of the Congo Craton, and many others. The major structures identified in this part are formed as a result of geodynamic activity between the Oligocene and the recent period, to which we can add the volcanism that exists along with the continental limit. The XGM201e_2159 model is used to highlight the geological structures of Southwestern Cameroon. First, we separated the regional and residual anomalies from Bouguer gravity data. Then, we used a combination of filters to enhance the signature of the residual anomalies in Southwest Cameroon. These filters identified various geological structures in the area. Finally, we applied the enhanced horizontal gradient amplitude (EHGA) and multi-scale horizontal derivative of the vertical derivative (MSHDVD) methods to reveal the geological contacts, allowing us to establish the corresponding structural map of the region. In addition, the results obtained in this study are the first to precisely define the circumferential demarcation of the continental and oceanic expansions of Mount Cameroon, while clearly illustrating the Bao, Bomana, Tiko, and Ekona faults that extend to the Bakassi Peninsula and the Douala outlet. Furthermore, they highlight the strike–slip faults in the summit vicinity. The structural map shows that most of the geological boundaries identified in the area are trending in the NE–SW, NNE–SSW, ENE–WSW, N–S, and NW–SE directions. URL Link na plný text Kategória publikačnej činnosti ADC Číslo archívnej kópie 52195 Kategória ohlasu SAFANI, Jamhir - IBRAHIM, Khalil - DENI, Wa - RUBAIYN, Al - FIRDAUS, F. - HARISMA, H. Interpreting structural configuration of the Sengkang Basin of Indonesia using edge detection and 3-D Euler deconvolution to satellite gravity data. In Turkish journal of earth sciences. ISSN 1300-0985, 2023, vol. 32, no. 7, pp. 894-914.
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Názov A new scenario-based approach for water quality and environmental impact assessment due to mining activities Aut.údaje Mohd Talha Anees, Mohammad Muqtada Ali Khan ... [et al.] Autor Anees Mohd Talha (20%)
Spoluautori Khan Mohammad Muqtada Ali (10%)
Kadir Mohd Omar Abdul (10%)
Abdelrahman Kamal (10%)
Eldosouky Ahmed M. (10%)
Andráš Peter 1953- (20%) UMBFP04 - Katedra životného prostredia
Yahaya Nasehir Khan Bin E.M. (5%)
Johar Zubaidi (5%)
Fnais Mohammed S. (5%)
Omar Fatehah Mohd (5%)
Zdroj.dok. Water. Vol. 14, no. 13 (2022), pp. [1-7]. - Basel : Multidisciplinary Digital Publishing Institute, 2022 Kľúč.slová posudzovanie vplyvov na životné prostredie - environmental impact assessment ťažké kovy - heavy metals ťažba znečistenie - pollution kvalita vody Form.deskr. články - journal articles Jazyk dok. angličtina Krajina Švajčiarsko Anotácia Water quality assessment and its monitoring are necessary for areas of mining activities. In Malaysia, the mining industry is the backbone of the manufacturing and construction sectors. This study used spatio-temporal water quality modeling along a reach with mining activities during high and low discharges at Sungai (river) Lebir and Sungai Aring, situated in Gua Musang, Kelantan, Peninsular Malaysia. The objective was to assess the spatio-temporal environmental impact of mining activities during the wet and dry seasons. Data were collected at different locations along the reach. Point and non-point sources were near the mining site. Overland flow calculation at the mining site was found with the widely used SCS (Soil Conservation Service) curve number method. Several scenarios were analyzed, such as baseline, worst-case, and with-mitigation. The study revealed that baseline values of all parameters were either in a natural condition or slightly polluted, except for aluminum. All parameters were estimated at a high concentration from the mining site to downstream during the worst case of the wet season. Whereas, during the worst case of the dry season, no significant differences were observed compared to baseline values. In the with-mitigation scenario, parameter concentrations were improved and similar to baseline values. Overall, the scenario selection was helpful in the environmental impact assessment. Furthermore, this study will be significant in pre- and post-mining assessment and environmental clearance. URL Link na plný text Kategória publikačnej činnosti ADC Číslo archívnej kópie 51966 Katal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Báza dát xpca - PUBLIKAČNÁ ČINNOSŤ Odkazy PERIODIKÁ-Súborný záznam periodika článok
Názov Determination of structural lineaments on Northeastern Laos using the LTHG and EHGA methods Aut.údaje Luan Thanh Pham ... [et a.] Autor Pham Luan Thanh (20%)
Spoluautori Oliveira Saulo P. (10%)
Eldosouky Ahmed M. (10%)
Abdelrahman Kamal (10%)
Fnais Mohammed S. (10%)
Xayavong Viengthong (10%)
Andráš Peter 1953- (20%) UMBFP04 - Katedra životného prostredia
Van Le Dung (10%)
Zdroj.dok. Journal of King Saud University - Science. Vol. 34, no. 3 (2022), pp. 1-7. - Amsterdam : Elsevier B.V., 2022 Kľúč.slová gravitácia - gravity - gravitation horniny - rocks Heslá geogr. Laos Form.deskr. články - journal articles Jazyk dok. angličtina Krajina Holandsko Anotácia The LTHG and EHGA methods are enhancement versions of the gradient amplitude and can outline the edges of shallow and deep anomalous bodies simultaneously. Recently, these techniques have been used in approximating the edges of gravity and magnetic data. In this paper, we apply the LTHG and EHGA methods to the gravity dataset from the global gravity model WGM2012 to extract structural features of Northeastern Laos that appear as lineaments on transformed data maps. We also apply the tilt depth method to this dataset to estimate the depth of these lineaments. The findings showed that most of structures identified in Northeastern Laos are trending in the ENE-WSW, NE-SW, E-W, WNW-ESE and N-S directions with the depth ranging from 1.3 to 2.1 km. URL Link na plný text Kategória publikačnej činnosti ADM Číslo archívnej kópie 51544 Kategória ohlasu OGUNGBEMI, Oluwaseun Samuel - OYEBODE, Kazeem - BADMUS, Ganiyu Olabode - OGUNYEMI, Adebayo Tajudeen. Modeling of structural features from aeromagnetic maps using an improved deep learning technique. In Earth science informatics. ISSN 1865-0473, 2022, vol. 15, no. 4, pp. 2665-2671.
XU, Menglong - YANG, Yabin - SUN, Chengye - QIU, Gengen - CHEN, Liang - JING, Lei. Geophysical characterisation and oil-gas resource analysis of the Southern Huaying Mountain fault zone, Sichuan Basin, China. In Minerals. ISSN 2075-163X, 2023, vol. 13, no. 2, pp. 1-21.
PRASAD, Korimilli Naga Durga - PHAM, Luan Thanh - SINGH, Anand P. - ELDOSOUKY, Ahmed M. - ABDELRAHMAN, Kamal - FNAIS, Mohammed S. - GOMEZ-ORTIZ, David. A novel enhanced total gradient (ETG) for interpretation of magnetic data. In Minerals. ISSN 2075-163X, 2022. vol. 12, no. 11, pp. 1-16.
Katal.org. BB301 - Univerzitná knižnica Univerzity Mateja Bela v Banskej Bystrici Báza dát xpca - PUBLIKAČNÁ ČINNOSŤ Odkazy PERIODIKÁ-Súborný záznam periodika článok
Názov Structural analysis and basement topography of Gabal Shilman area, South Eastern Desert of Egypt, using aeromagnetic data Aut.údaje Ahmed M. Eldosouky ... [et al.] Autor Eldosouky Ahmed M. (20%)
Spoluautori Elkhateeb Sayed Omar (10%)
Mahdy Ali Mahmoud (10%)
Saad Ahlam Ahmed (10%)
Fnais Mohammed S. (10%)
Abdelrahman Kamal (20%)
Andráš Peter 1953- (20%) UMBFP04 - Katedra životného prostredia
Zdroj.dok. Journal of King Saud University - Science. Vol. 34, no. 2 (2022), pp. 1-6. - Amsterdam : Elsevier B.V., 2022 Kľúč.slová topografia - topography štruktúrna analýza - structural analysis Heslá geogr. Egypt Jazyk dok. angličtina Krajina Holandsko Anotácia The existing work deals with the structural analysis and detecting basement depth of G. Shilman area, South Eastern Desert (SED), Egypt. This work includes interpreting aeromagnetic data to map out structures within the study area and determine the depth of the magnetic basement which can be an aide to advance exploratory study. The first vertical derivative (1st VD) enhanced the short-wavelength and high-frequency features of the data. The analytic signal (AS) and horizontal gradient magnitude (HGM) maps well the structures of G. Shilman area. Statistical analysis of the delineated structures indicated that the NW, N_S, NNE and NE are the main structural trends controlling the study area. This suggests that the area was dominated by various stress regimes. The source parameter imaging (SPI) method which acts strongly at all magnetic latitudes was applied to the data to map the basement topography of G. Shilman area. The basement depths vary from about 0.1 km to about 1.5 km at the deepest part of the study area. The depth examination indicates that the recent deposits are not thick and reflect the shallow nature of the basement in G. Shilman area. The results of our study gives more accurate interpretation for the structural regime of the study area and can be applied for alike areas. URL Link na plný text Kategória publikačnej činnosti ADM Číslo archívnej kópie 51541 Kategória ohlasu MOHAMED, Ahmed - AL DEEP, Mohamed - OTHMAN, Abdullah - TAHA, Ayman - ALSHEHRI, Fahad - ABDELRADY, Ahmed. Integrated geophysical assessment of groundwater potential in Southwestern Saudi Arabia. In Frontiers in earth science. ISSN 2296-6463, 2022, vol. 10, art. no. 937402, pp. 1-20.
AL-HADITHI, Shams J. - AL-BANNA, Ahmed S. Using source parameter imaging technique to the aeromagnetic data to estimate the basement depth of Tharthar Lake and surrounding area in Central Iraq. In Iraqi geological journal. ISSN 2414-6064, 2022, vol. 55, no. 1F, pp. 151-159.
SALAWU, Naheem Banji. Interpretation of remote sensing and aeromagnetic data to depict the structural framework of the transitional zone between the Igarra Schist belt and Anambra Basin, Nigeria. In Acta Geophysica. ISSN 1895-6572, 2022, vol. 71, no. 1, pp. 227-246.
PRASAD, K. N. D. - LUAN THANH PHAM - SINGH, A. P. Structural mapping of potential field sources using BHG filter. In Geocarto international. ISSN 1010-6049, 2022, vol. 37, no. 26, pp. 11253-11280.
OGAH, Arewa James - ABUBAKAR, Fahad. Solid mineral potential evaluation using integrated aeromagnetic and aeroradiometric datasets. In Scientific reports. ISSN 2045-2322, 2024, vol. 14, no. 1, pp. 1-19.
OUALID, Melouah - EBONG, Ebong D. Lithospheric and asthenospheric properties of the saharan platform inferred from potential field, geoid and heat flow data. In Journal of African earth sciences. ISSN 1464-343X, 2024, vol. 209, art. no. 105124, pp. 1-13.
JI, Naixuan - QIN, Xiaoxiao - WU, Heyu - WANG, Zi - DU, Wei - LIU, Yun - ZHANG, Tiehan - ZHANG, Shengze - SHI, Qiaomu. Occurrence characteristics of lead-zinc mine and low-flying aeromagnetic prospecting in a forested region of Yichun City. In Minerals. ISSN 2075-163X, 2023, vol. 13, no. 11, pp. 1-23.
LGHOUL, Meriem - ABD-ELHAMID, Hany F. - ZELENAKOVA, Martina - ABDELRAHMAN, Kamal - FNAIS, Mohammed S. - SBIHI, Karim. Application of enhanced methods of gravity data analysis for mapping the subsurface structure of the bahira basin in Morocco. In Frontiers in earth science. ISSN 2296-6463, 2023, vol. 11, art. no. 1225714, pp. 1-15.
ELFEKY, Karem Elsayed - WANG, Qiuwang. Techno-economic assessment and optimization of the performance of solar power tower plant in Egypt's climate conditions. In Energy conversion and management. ISSN 0196-8904, 2023, vol. 280, art. no. 116829, pp. 1-16.
SALAWU, Naheem Banji. Interpretation of remote sensing and aeromagnetic data to depict the structural framework of the transitional zone between the Igarra Schist belt and Anambra Basin, Nigeria. In Acta geophysica. ISSN 1895-6572, 2023, vol. 71, no. 1, pp. 227-246.
MOHAMED, Ahmed - AL DEEP, Mohamed - OTHMAN, Abdullah - TAHA, Ayman - ALSHEHRI, Fahad - ABDELRADY, Ahmed. Integrated geophysical assessment of groundwater potential in Southwestern Saudi Arabia. In Frontiers in earth science. ISSN 2296-6463, 2022, vol. 10, art. no. 937402, pp. 1-20.
PRASAD, K. N. D. - LUAN THANH PHAM - SINGH, A. P. Structural mapping of potential field sources using BHG filter. In Geocarto international. ISSN 1010-6049, 2022, vol. 37, no. 26, pp. 11253-11280.
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