How to search?
advanced search

Search results

Filters

  • Journals
  • Authors
  • Keywords
  • Date
  • Type

Search results

Number of results: 12
items per page: 25 50 75
Sort by:

Stress Rupture Test of MAR-M509 Alloy with Structure Refined by Rapid Resolidification

A. Trytek M. Tupaj M. Mróz W. Orłowicz
Archives of Foundry Engineering | 2012 | No 4 | DOI: 10.2478/v10266-012-0118-6
Keywords MAR-M-509 alloy Rapid resolidification microstructure Stress rupture test
Download PDF Download RIS Download Bibtex

Abstract

This study presents results of stress rupture test of MAR-M-509 cobalt alloy samples, as-cast and after surface refining with a concentrated stream of heat. Tests were conducted on samples of MAR-M-509 alloy castings, obtained using the lost-wax method. Casting structure refining was performed with the GTAW method in argon atmosphere, using the current I = 200 A and electrical arc scanning velocity vs = 100, 150, 200 and 250 mm/min. The effect of rapid resolidification of the MAR-M-509 alloy on the microstructure was examined and significant improvement in stress rupture test was observed.

Go to article

Authors and Affiliations

A. Trytek
M. Tupaj
M. Mróz
W. Orłowicz

CONTRIBUTION OF MICROSTRUCTURAL CONSTITUENTS ON HOT CRACKING OF MAR-M247 NICKEL BASED SUPERALLOY

A. Zielińska-Lipiec Ł. Rakoczy M. Grudzień
Archives of Metallurgy and Materials | 2018 | vol. 63 | No 1 | DOI: 10.24425/118926
Keywords superalloys liquation cracking gamma prime MAR-M247
Download PDF Download RIS Download Bibtex

Authors and Affiliations

A. Zielińska-Lipiec
Ł. Rakoczy
M. Grudzień

Armatorzy, szyprowie i marynarze w portach południowego Bałtyku w XVIII wieku

Ewa Łączyńska
Studia Maritima | 2015 | vol. XXVIII
Keywords armator szyper marynarz południowy Bałtyk XVIII w.
Download PDF Download RIS Download Bibtex

Abstract

Szeroko rozumiane pojęcie ludzi morza obejmuje nie tylko tych, którzy przemierzając akweny, ryzykowali swoim życiem, ale i tych, którzy wysyłali ich w rejs i ryzykowali swoim majątkiem. Analiza obejmuje środowisko ludzi morza w głównych portach bałtyckich (Gdańsk, Szczecin, Elbląg, Stralsund, Kołobrzeg) w zależności od stanu badań. Środowisko armatorów dość żywo reagowało na zmienne koniunktury gospodarcze. Należy też zauważyć, że w coraz większym stopniu ich aktywność zależała od polityki gospodarczej rządu centralnego (system podatkowy, monopolowy, akcyzowy). Widoczny jest też związek armatorstwa z prowadzeniem działalności kupieckiej oraz dużą popularnością spółek armatorskich zawiązywanych w celu prowadzenia wspólnych interesów handlowych, wzmacnianych poprzez koligacje rodzinne i towarzyskie. W okresach prosperity wzrastała liczba żaglowców, łatwiej było szyprom i marynarzom znaleźć pracę na statku. Kwestia ich zatrudnienia była regulowana odgórnie regulaminami i zapisami wilkierzy miejskich. Brak było jednak państwowych lub miejskich ustaw socjalnych, a zabezpieczenie życia i zdrowia lub bytu rodziny zależało od inicjatyw prywatnych lub gildii.
Go to article

Authors and Affiliations

Ewa Łączyńska

The Influence of Macrostructure of Nickelbased Superalloys IN713C and MAR 247 on the Characteristics of High-temperature Creep

M. Cieśla R. Findziński F. Binczyk M. Mańka
Archives of Foundry Engineering | 2014 | No 4 | DOI: 10.2478/afe-2014-0077
Keywords Nickel-base superalloyIN-713C and Mar-247 Macrostructure Modification Creep
Download PDF Download RIS Download Bibtex

Abstract

The study consisted in assessing the influence of surface and volume modification on the characteristics of high-temperature creep of

castings made of waste products of nickel-based superalloys IN 713C and the MAR-247. The results of high-temperature creep tests

performed under conditions of two variants of research were analysed. The characteristics of creep according to variant I were obtained on

the basis of earlier studies of these alloys with the parameters T=982o

C, σ=150MPa [1]. Variant II included carrying out creep tests of

alloy IN713C with the parameters T=760o

C, σ =400MPa and alloy MAR247 with the parameters: T=982o

C, σ=200MPa.Developed creep

characteristics were compared with the results of these alloys with the parameters according to variant I of the study. It was observed that

the conditions of experiments carried out depending upon the value of the creep test temperature and stress with the creep stability depends

on the size of the macrograin (I variant of the studies) or such influence was not observed (II variant of the studies). Stability of samples

with coarse structure in variant I of creep tests was significantly higher than the samples with fragmented grain. It was found that the

observed stability conditions are dependent on the dominant deformation mechanisms under creep tests carried out - diffusion mechanism

in variant I and a dislocation mechanism in variant II of the study. The conditions for the formation and growth of the cracks in the tested

materials, including the morphological characteristics of their macro-and microstructure were tested.

Go to article

Authors and Affiliations

M. Cieśla
R. Findziński
F. Binczyk
M. Mańka

Geometry of Remeltings and Efficiency of the Surface Remelting Process Applied to Cobalt Alloy Castings

M. Tupaj M. Mróz W. Orłowicz
Archives of Foundry Engineering | 2013 | No 2 | DOI: 10.2478/afe-2013-0044
Keywords MAR-M509 alloy thermal efficiency Surface remelting Remelting geometry Melting efficiency
Download PDF Download RIS Download Bibtex

Abstract

The paper summarises results of measurements of remelting area geometry, thermal efficiency and melting efficiency characterising the surface remelting process applied to castings of MAR-M-509 cobalt alloy. The remelting process was carried out with the use of GTAW (Gas Tungsten Arc Welding) method in protective atmosphere of helium, at the electric current intensity in the range from 100 A to 300 A, and the electric arc scanning velocity vs in the range from 200 mm/min to 800 mm/min. The effect of current intensity and electric arc scanning velocity on geometrical parameters of remeltings, thermal efficiency, and melting efficiency characterising the remelting process has been determined.
Go to article

Authors and Affiliations

M. Tupaj
M. Mróz
W. Orłowicz

Selected issues from the current work of The International Maritime Organization (IMO)

Aleksandra Lubowska Karolina Sypion-Babś
Prawo Morskie | 2021 | No XLI | 117-136 | DOI: 10.24425/pm.2021.139481
Keywords seafarers’ situation COVID-19 pandemic maritime safety protection of the marine environment IMO structure
Download PDF Download RIS Download Bibtex

Abstract

The purpose of this publication is to briefly present selected issues, that have been the subject of the work of the International Maritime Publication in the last two years. For IMO this was a period when the organization had to face very serious consequences of the COVID-19 pandemic. It influenced not only the fate of thousands seafarers in this industry, but also the functioning of the Organization itself, forcing to adopt innovative and unprecedented solutions. Their effects are still clearly felt and have an impact on the current as well as future work. Authors would like to draw the attention, inter alia, on issues that have become pivotal in this difficult time and others that focus particularly on aspects related to seafarers’ rights, autonomous ships, fraudulent registration and fraudulent registries of ships, increasing safety in shipping, facilitating maritime trade and protection of maritime environment. Simultaneously, it is worth stressing out that the list of important issues presented in this paper is not exhaustive. The article also briefly presents the organizational structure of IMO.
Go to article

Bibliography

Lost-Siemińska D., Obowiązek stosowania najlepszej dostępnej technologii w ochronie środowiska morskiego, Prawo Morskie 2021, t. XL
Konwencja o pracy na morzu, Dz.U. z 2013 r. poz. 845 oraz z 2019 r. poz. 962
Konwencja o ułatwieniu międzynarodowego obrotu morskiego, Dz.U. z 1969 r. poz. 236, ze zm.
Międzynarodowa konwencja o bezpieczeństwie życia na morzu, Dz.U. z 2016 r. poz. 869
Międzynarodowa konwencja o odpowiedzialności cywilnej za szkody spowodowane zanieczyszczeniem olejami, Dz.U. z 2001 r. poz. 1527
Międzynarodowa konwencja o ograniczeniu odpowiedzialności za roszczenia morskie, Dz.U. z 1986 r. poz. 175, zmieniona Protokołem z 1996 r., Dz.U. z 2012 r. poz. 146
Międzynarodowa konwencja o zapobieganiu zanieczyszczaniu morza przez statki, Dz.U. z 2016 r. poz. 761
Pyć D., Ship Energy Efficiency Measures and Climate Protection, International Community Law Review, 2021, 23(2-3)
Pyć D., Międzynarodowa Organizacja Morska [w:] Leksykon prawa morskiego. 100 podstawowych pojęć, (red.) D. Pyć, I. Zużewicz-Wiewiórowska, C.H.Beck Warszawa 2020
Go to article

Authors and Affiliations

Aleksandra Lubowska
1 2
Karolina Sypion-Babś
3 4
  1. Zastępca Kierownika Ośrodka ds. IMO przy Polskim Rejestrze Statków S.A., Gdańsk
  2. Przewodnicząca Krajowej Sekcji Bezpieczeństwa na Morzu w Ośrodku ds. IMO, Gdańsk
  3. specjalista Ośrodka ds. IMO przy Polskim Rejestrze Statków S.A., Gdańsk
  4. Przewodnicząca Krajowej Sekcji Prawnej w Ośrodku ds. IMO, Gdańsk

The right to social security in the country of residence not only for the seafarer – the consequences of the judgment of the Court of Justice of 8 may 2019 in case C-631/17 sf v Inspecteur van de Belastingdienst

Sylwia Majkowska-Szulc
Prawo Morskie | 2021 | No XL | 67-84 | DOI: 10.24425/pm.2021.138125
Keywords coordination of social security systems in the European Union social security of seafarers work at sea
Download PDF Download RIS Download Bibtex

Abstract

This article deals with the problem of the right to social security in the state of residence in the light of Regulation No 883/2004 on the coordination of social security systems. The judgment of the Court of Justice of 8 May 2019 in case C-631/17 SF v Inspecteur van de Belastingdienst served as an inspiration for the above-mentioned topic. In its judgement the Court has made a binding interpretation of Article 11(3)(e) of the said Regulation in the context of the situation of a national of a member state employed as a seaman on board a vessel flying the flag of a third state by an employer established in a member state other than the worker’s state of residence. The aim of the article is to justify the right to social security in the state of residence based on Article 11(3)(e) of the Regulation 883/2004. The analysis shows that it is necessary to introduce appropriate changes to the Polish legislation on the social security system. Simultaneously, as far as seafarers are concerned, it is desirable to consider the specificities of the work at sea, including the introduction of maritime social security as a specific type of social security, similar to French law for instance. The changes should be introduced gradually to avoid the risk of decline in the employment of Polish seafarers by EU shipowners.
Go to article

Authors and Affiliations

Sylwia Majkowska-Szulc
1
  1. Zakład Prawa Prywatnego Międzynarodowego, Katedra Prawa Cywilnego, Wydział Prawa i Administracji Uniwersytetu Gdańskiego

The meaning and evolution of the ‘genuine link’ concept and its practical implementation 40 years after the adoption of the 1982 UN Convention on the law of the sea

Paweł Krężel
Prawo Morskie | 2023 | No XLIV | 71-82 | DOI: 10.24425/pm.2023.147840
Keywords genuine link Flag State jurisdiction UNCLOS FSC Recognized Organizations RO Code seafarers’ social security
Download PDF Download RIS Download Bibtex

Abstract

This article examines the meaning and evolution of the practical implementation of the ‘genuine link’ concept over the years since the rise of the flag-of-convenience (FOC) registries in the 1920s. The author notes that while the competition between Flag States become fiercer, the regulations on ship safety, pollution prevention or shipboard working and living conditions are becoming standardized and ubiquitous. By being regulated by international instruments, in effect restricting regulatory powers of Flag States. Likewise, the enforcement of these provisions is becoming internationalized – with the omnipresence of classification societies and introduction of PSC regimes. At the same time, author identifies a lack of adequate regulations in respect of employment of seafarers, most notably wages and social security contributions, both at the national (Flag State) and international level. This legal loophole encourages Port States to introduce local solutions, irrespective of Flag State regulations. Such developments weaken the ‘genuineness’ of the ‘genuine link’ between ship and its Flag State.
Go to article

Authors and Affiliations

Paweł Krężel

Exploring One of the Biggest Mysteries of Martian Geology

Krzysztof Gaidzik Justyna Ciesielczuk Monika Fabiańska Magdalena Misz-Kennan Pádhraig S . Kennan
ACADEMIA. The magazine of the Polish Academy of Sciences | 2021 | No 2 (70) Boundaries | 20-23 | DOI: 10.24425/academiaPAS.2021.139443
Keywords Mars spherules of hematite martian blueberries
Download PDF Download RIS Download Bibtex

Abstract

Modern technologies have helped us push the boundaries of geology and begin exploration of other planets. Great strides have been made in the study of Mars, which is slowly yielding up its secrets.
Go to article

Authors and Affiliations

Krzysztof Gaidzik
1
Justyna Ciesielczuk
1
Monika Fabiańska
1
Magdalena Misz-Kennan
1
Pádhraig S . Kennan
2
  1. University of Silesia in Katowice
  2. University College Dublin, Ireland

MAR comparisons between different chronometric methods for two profiles in the Bodrogkeresztúr area

László Makó Dávid Molnár Péter Cseh Pál Sümegi
Studia Quaternaria | 2021 | vol. 38 | No 1 | 67-73 | DOI: 10.24425/sq.2020.133761
Keywords loess sedimentology MAR age-depth models Bodrogkeresztúr
Download PDF Download RIS Download Bibtex

Abstract

The deepening and exploration of the loess-palaeosol section at the foot of the Kopasz Hill at Bodrogkeresztúr have been carried out to expand the existing knowledge of the Carpathian foothill palaeoenvironmental factors and their impact. The study deals with particle size analysis, organic matter and carbonate content. For the presentation of age-depth models, the OSL dates of Bodrogkeresztúr (BKT) and the 14C dates of Bodrogkeresztúr, brickyard 1 were used-, and the diagrams of the Accumulation Rates (AR) derived from them. These were compared with Mass Accumulation Rate (MAR) calculations based on OSL and 14C data from BKT and 14C data from Bodrogkeresztúr, brickyard 1. It became evident that there is a significant difference between the two sections, which may be due to the upland position, the overlap, or the wind tunnel effect. Sedimentological studies revealed coarser grain composition, however, the nearly complete absence of coarser sand fraction is also noticeable in the case of BKT. Also, the entire section is characterized by increased carbonate content due to post-sedimentation processes, recarbonization and leaching. The AR and MAR results show the difference between the suitability of different chronometric methods, indicating that the top of both sections may have been redeposited or eroded.
Go to article

Bibliography

1. Bennett, K.D., 1994. Confidence intervals for age estimates and deposition times in late-Quaternary sediment sequences. The Holocene 4, 337–348.
2. Blaauw, M., Christen, A.J., 2011. Flexible palaeoclimate age-depth models using an autoregressive gamma process. Bayesian Analysis 6 (3), 457–474.
3. Bohn, H.L., McNeal, B.L., O’Connor, G.A., 1985. Talajkémia, Mezőgazdasági Kiadó – Gondolat Kiadó, Budapest, 363 pp.
4. Bokhorst, M.P., Vandenberghe, J., Sümegi, P., Łanczont, M., Gerasimenko, N.P., Matviishina, Z.N., Marković, S.B., Frechen, M., 2011. Atmospheric circulation patterns in central and eastern Europe during the Weichselian Pleniglacial inferred from loess grainsize records. Quarternary International 234, 62–74.
5. Bösken, J., Obreht, I., Zeeden, C., Klasen, N., Hambach, U., Sümegi, P., Lehmkuhl, F., 2019. High-resolution palaeoclimatic proxy data from the MIS3/2 transition recorded in northeastern Hungarian loess. Quaternary International 502, 95–107.
6. Bronk Ramsey, C., Lee, S., 2013. Recent and Planned Developments of the Program OxCal. Radiocarbon 55 (2–3), 720–730.
7. Dean, W.E., 1974. Determination of carbonate and organic matter in calcareous sediments and sedimentary rocks by loss on ignition: comparison with other methods. Journal of Sedimentary Petrology 44, 242–248. 8. Ding, Z.L., Sun, J.M., Yang, S.L., Liu, T.S., 2001. Geochemistry of the Pliocene red clay formation in the Chinese Loess Plateau and implications for its origin, source provenance and palaeoclimate change. Acta Geochimica et Cosmochimica 65, 901–913.
9. Dokuchaev, V.V. , 1879. Chernozem (black earth) of European Russia, Societé Imperiale Libre Économique Trenke & Fusnot, St. Petersburg, 66 pp.
10. Huntley, D.J., Godfrey-Smith, D.I., Thewalt, M.L.W., 1985. Optical dating of sediments. Nature 313, 105–107.
11. Molnár, D., 2015. Dél-dunántúli és kelet-horvátországi lösz-palaeotalaj szelvények palaeoökológiai rekonstrukciója malakológiai és üledéktani adatok segítségével. Doktori disszertáció, Földtudományok Doktori Iskola, Szeged.
12. Molnár, D., Sümegi, P., 2016. Dél-dunántúli és kelet-horvátországi lösz-palaeotalaj szelvények palaeoökológiai rekonstrukciója malakológiai és üledéktani adatok segítségével, In: Unger, J., Pál-Molnár, E. (Eds), Geoszférák 2015, GeoLitera, Szeged, 185–209.
13. Pécsi, M., 1993. Negyedkor és löszkutatás. Akadémia kiadó, Budapest, 375 pp.
14. Pye, K., 1995. The nature, origin and accumulation of loess. Quaternary Science Reviews 14, 653–667.
15. Rhodes, E.J., 2011. Optically stimulated luminescence dating of sediments over the past 250,000 years”. Annual Review of Earth and Planetary Sciences 39, 461–488.
16. Schatz, A.-K., Zech, M., Buggle, B., Gulyás, S., Hambach, U., Marković, S.B., Sümegi, P., Scholten, T., 2011. The late Quaternary loess record of Tokaj, Hungary: Reconstructing palaeoenvironment, vegetation and climate using stable C and N isotopes and biomarkers. Quaternary International 240, 52–61.
17. Schatz, A.-K., Buylaert, J.-P., Murray, A., Stevens, T., Scholten, T., 2012. Establishing a luminescence chronology for a palaeosol-loess profile at Tokaj (Hungary): A comparison of quartz OSL and polymineral IRSL signals. Quaternary Geochronology 10, 68–74.
18. Schatz, A.-K., Scholten, T., Kühn, P., 2015. Palaeoclimate and weathering of the Tokaj (Hungary) loess-palaeosol sequence. Palaeogeography, Palaeoclimatology, Palaeoecology 426, 170–182.
19. Stuiver, M., Reimer, P.J., Bard, E., Beck, J.W., Burr, G.S., Hughen, K.A., Kromer, B., McCormac, F.G., v. d. Plicht, J., Spurk, M., 1998. INTCAL98 Radiocarbon age calibration 24,000–0 cal BP. Radiocarbon 40, 1041–1083.
20. Stuiver, M., Reimer, P.J., Bard, E., Beck, J.W., Burr, G.S., Hughen, K.A., Kromer, B., McCormac, F.G., v. d. Plicht, J., Spurk, M., 1998a. INTCAL98 Radiocarbon age calibration 24,000–0 cal BP. Radiocarbon 40, 1041–1083.
21. Stuiver, M., Reimer, P.J., Braziunas, T.F., 1998b. High-precision radiocarbon age calibration for terrestrial and marine samples. Radiocarbon 40, 1127–1151.
22. Sümegi, P., 2005. Loess and Upper Palaeolithic environment in Hungary. Aurea Publishing, Nagykovácsi, 34–46.
23. Sümegi, P., Hertelendi, E., 1998. Reconstruction of microenvironmental changes in Kopasz Hill loess area at Tokaj (Hungary) between 15.000–70.000 BP years. Radiocarbon 40, 855–863.
24. Sümegi, P., Krolopp, E., 2002. Quatermalacological analyses for modeling of the Upper Weichselian palaeoenvironmental changes in the Carpathian Basin. Quaternary International 91, 53–63.
25. Sümegi, P., Molnár, D., Gulyás, S., Náfrádi, K., Sümegi, B., P., Törőcsik, T., Persaits, G., Molnár, M., Vandenberghe, J., Zhou, L., 2019. High-resolution proxy record of the environmental response to climatic variations during transition MIS3/MIS2 and MIS2 in Central Europe: The loess-palaeosol sequence of Katymár brickyard (Hungary). Quarternary International 504, 40–55.
26. Sümegi, P., Rudner, Z.E., 2001. In situ charcoal fragments as remains of natural wild fires in the upper Würm of the Carpathian Basin. Quaternary International 76/77, 165–176.
27. Sümegi, P., Törőcsik, T., Náfrádi, K., Sümegi, B., Majkut, P., Molnár, D., Tapody, R., 2016. Radiocarbon dated complex palaeoecological and geoarcheological analyses at the Bodrogkeresztúr-Henye Gravettian site (NE Hungary). Archeometriai Műhely 2016/XIII./1. 28. Újvári, G., Kovács, J., Varga, Gy., Raucsik, B., Marković, S.B., 2010. Dust flux estimates for the Last Glacial Period in East Central Europe based on terrestrial records of loess deposits: a review. Quaternary Science Reviews 29 (23), 3157–3166.
29. Újvári, G., Molnár, M., Novothny, Á., Páll-Gergely, B., Kovács, J., Várhegyi, A., 2014. AMS 14C and OSL/IRSL dating of the Dunaszekcso loess sequence (Hungary): chronology for 20 to 150 ka and implications for establishing reliable ageedepth models for the last 40 ka. Quaternary Science Reviews 106, 140–154.
30. Wentworth, C.K., 1922. A scale of grade and class terms for clastic sediments. The Journal of Geology 30, 377–392.
Go to article

Authors and Affiliations

László Makó
1 2
Dávid Molnár
1 2
Péter Cseh
1 2
Pál Sümegi
1 2
  1. Department of Geology and Paleontology, University of Szeged, H-6722 Szeged, Egyetem u. 2-6, Hungary
  2. University of Szeged, Interdisciplinary Excellence Centre, Institute of Geography and Earth Sciences, Long Environmental Changes research team, H-6722 Szeged, Egyetem u. 2-6, Hungary

Investigation on Mechanical Properties of MAR-M247 Superalloy for Turbine Blades by Experiment and Simulation

Hao Lin Haipeng Geng Xifeng Zhou Leiming Song Xiaojun Hu
Archives of Metallurgy and Materials | 2024 | vol. 69 | No 1 | 189-196 | DOI: 10.24425/amm.2024.147808
Keywords heat treatment MAR-M247 nickel-based superalloy mechanical properties strength analysis turbine blades
Download PDF Download RIS Download Bibtex

Abstract

This study aimed to investigate the metallographic structure and the impact of the heat treatment process on the MAR-M247 superalloy, a high-temperature nickel-based superalloy commonly used in turbine blades. The heat treatment process can potentially influence the mechanical properties of the MAR-M247 superalloy at different temperatures. A strength simulation analysis of gas turbine blades should include the variations in the mechanical properties of the material. The effect of heat treatment on grain size was investigated by metallographic experiments, and numerical calculations of material mechanical properties were conducted. The mechanical property parameters necessary for finite element analysis of turbine blades were determined. Finally, a finite element simulation model of the blade was established based on these mechanical property parameters, and strength analysis was performed. The simulation results provided the stress distribution and the strength of the turbine blade.
Go to article

Authors and Affiliations

Hao Lin
1
ORCID: ORCID
Haipeng Geng
2
ORCID: ORCID
Xifeng Zhou
2
ORCID: ORCID
Leiming Song
1
ORCID: ORCID
Xiaojun Hu
1
ORCID: ORCID
  1. School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing, 100044, P.R. China
  2. School of Mechanical Engineering, Xi’an Jiaotong University, Xi’an, 710049, P.R. China

Application of the fuzzy analytic hierarchy process for water resources in the Wadi AlHasa catchment, Jordan

Alsharifa Hind Mohammad Taleb Odeh Mahmoud Abualhaijaa Khaldoun Shatanawi Maha Halalshe
Journal of Water and Land Development | 2024 | No 60 | 100-111 | DOI: 10.24425/jwld.2024.149112
Keywords DRASTIC index flash floods fuzzy analytic hierarchy process (FAHP) geomorphological units groundwater vulnerability managed aquifer recharge (MAR)
Download PDF Download RIS Download Bibtex

Abstract

This article introduces a groundwater vulnerability assessment model that utilises the fuzzy analytic hierarchy process (FAHP) in the Wadi AlHasa catchment, Jordan. The assessment takes into account both geomorphological and hydrogeological variables, employing a comprehensive methodology that integrates various parameters. To evaluate the catchment, the study employs remote sensing and Geographic Information System (GIS) techniques. The analysis of the digital elevation model enables the creation of a map illustrating the diverse geomorphology of the catchment. This geomorphology significantly influences drainage density, direction, and the spatial distribution and intensity of flash flood events. Moreover, the study develops and maps a fuzzy FAHP DRASTIC vulnerability index, which proves to be a valuable tool for assessing the susceptibility of groundwater resources to contamination. The unique feature of the index is its ability to incorporate uncertain or subjective data, providing a means to evaluate the significance of various influencing factors. This information serves as critical support for decision-making and management efforts geared towards safeguarding and enhancing groundwater resources. Within the study area, the DRASTIC vulnerability index values span from 0.08325 to 0.28409, with 18% of the site exhibiting a high vulnerability rate. Additionally, the article implements a managed aquifer recharge model (MAR), with 31% of the area falling into MAR classes. Among these, 22.1% are classified as a high MAR class, while 0.7% belong to a very high MAR class. These findings underscore the feasibility of MAR projects in regions with limited water resources.
Go to article

Authors and Affiliations

Alsharifa Hind Mohammad
1
ORCID: ORCID
Taleb Odeh
2
ORCID: ORCID
Mahmoud Abualhaijaa
1
ORCID: ORCID
Khaldoun Shatanawi
1 3
ORCID: ORCID
Maha Halalshe
1
ORCID: ORCID
  1. The University of Jordan, Water, Energy, and Environment Center, Queen Rania Street, 11942 Amman, Jordan
  2. The Hashemite University, Department of Water Management and Environment, Prince Al Hassan bin Talal College for Natural Resources and the Environment, P.O. Box 330127, 13133 Zarqa, Jordan
  3. The University of Jordan, School of Engineering, Queen Rania Street, 11942 Amman, Jordan

This page uses 'cookies'. Learn more