Isotope hydrochemical investigation of saline intrusion in the coastal aquifer of Karachi, Pakistan

Mashiatullah, A.; Qureshi, R.M.; Tasneem, M.A.; Javed, Tariq; Gaye, C.B.; Ahmad, E.; Ahmad, Nasir

doi:10.1016/s1569-4860(05)08031-9

Cited by 4 publications

(3 citation statements)

References 1 publication

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“…The HYSPLIT model output indicates that the monsoon is the dominant source of precipitation for the southeast of Iran. Karachi (Pakistan) is also influenced by monsoon moisture sources [72], so the Karachi station MWL (KMWL) δ 2 H = 7.56 δ 18 O + 0.34 [73] can be used as an alternative MWL for the southeast of Iran. No alternative MWL is available for coastal areas along the Persian Gulf and central Iran.…”

Section: Developing Mwls For Iranmentioning

confidence: 99%

Developing Meteoric Water Lines for Iran Based on Air Masses and Moisture Sources

Heydarizad

Raeisi

Sorí

et al. 2019

Water

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Iran is a semi-arid to arid country that faces a water shortage crisis. Its weather is also influenced by various air masses and moisture sources. Therefore, applying accurate stable isotope techniques to investigate Iran’s precipitation characteristics and developing Iran meteoric water lines (MWLs) as an initial step for future isotope hydrology studies is vitally important. The aim of this study was to determine the MWLs for Iran by considering air masses and dominant moisture sources. The Hybrid Single-Particle Lagrangian Integrated Trajectory (HYSPLIT) model backward analysis was used to determine the trajectories of various air masses in 19 weather stations in Iran and the areas covered by them. δ18O and δ2H contents were obtained for precipitation events from 32 stations in Iran and four in Iraq. Stable isotope samples were gathered from different sources and analyzed in various laboratories across the world. Three MWLs for north of Iran, south Zagros, and west Zagros, were determined based on the locations of dominant air masses and moisture sources. The proposed MWLs were validated by comparison with fresh karstic spring isotope data across Iran. In addition, Iran main moisture sources MWLs were used to determine dominant moisture sources role in karstic springs and surface water resources recharge.

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Section: Developing Mwls For Iranmentioning

confidence: 99%

Developing Meteoric Water Lines for Iran Based on Air Masses and Moisture Sources

Heydarizad

Raeisi

Sorí

et al. 2019

Water

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“…have long time series of stable isotope datasets. The stable isotope technique in precipitation has also been applied in numerous studies [16,[28][29][30][31][32][33][34][35] across the Middle East, mainly during the last two decades.…”

Section: Introductionmentioning

confidence: 99%

The Stable Isotope Characteristics of Precipitation in the Middle East Highlighting the Link between the Köppen Climate Classifications and the δ18O and δ2H Values of Precipitation

Heydarizad

Gimeno

Sorí

et al. 2021

Water

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The Middle East is faced with a water shortage crisis due to its semiarid and arid climate. In this paper, precipitation as an important part of the water cycle was evaluated in 43 stations across the Middle East using the stable isotope technique to study the parameters which influence the stable isotope content of precipitation. First, the stepwise regression model was applied to determine the main geographical and climatological factors affecting the stable isotopes in precipitation. Secondly, the stepwise model was also used to simulate the stable isotope values in precipitation. Furthermore, due to the notable climatic variations across the Middle East, the precipitation sampling stations were classified into six groups based on the Köppen climate zones. Significant variations in the stable isotope values of precipitation were observed in the stations of each climate zone. Finally, the Middle East meteoric water line was developed for the dry and wet periods based on the average stable isotopes in the studied stations. The developed lines showed a lower slope compared to the GMWL due to the higher air temperature and relative humidity in the Middle East compared to the average global conditions. To conclude, the stable isotope contents in precipitation showed significant temporal and spatial variations due to the notable climatic variations across the Middle East.

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“…This shows the presence of soluble, once and other dissolved solids. However, well water samples especially ZA 1 ,ZA 2 ,ZB 3 and ZC 1 , all during dry season have concentrations slightly higher than the acceptable value [17,18]. The rest fall below the acceptable level, the fact that those that exceeded the acceptable value were only during dry season shows that ions are more concentrated during dry season because of the absence of dilution by rainwater.…”

Section: Resultsmentioning

confidence: 89%

Perspective Chapter: Environmental Assessment on the Effect of Chemical Waste from Dyeing Industries in Zaria

Ebuka Arthur,

Abdullahi,

Abatyough

et al. 2023

Heavy Metals - Recent Advances

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The research study was done on groundwater obtained from waste wells, well around the waste wells and wells about 5 km from the dyeing sites of Zaria, in Kaduna state of Nigeria. The objectives were to assess the status of pollution on local dyeing areas, the occupational hazard associated with this activity and the impact on the residents of the area. Parameters such as pH, coli form bacteria, conductivity, colour, DO, BOD, COD, chlorides, total available nitrogen, cadmium, chromium, lead, mercury and alkalinity were determined and statistical analysis carried out to evaluate the Significant difference of pollutants in the area studied.

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Isotope hydrochemical investigation of saline intrusion in the coastal aquifer of Karachi, Pakistan

Cited by 4 publications

References 1 publication

Developing Meteoric Water Lines for Iran Based on Air Masses and Moisture Sources

Developing Meteoric Water Lines for Iran Based on Air Masses and Moisture Sources

The Stable Isotope Characteristics of Precipitation in the Middle East Highlighting the Link between the Köppen Climate Classifications and the δ18O and δ2H Values of Precipitation

Perspective Chapter: Environmental Assessment on the Effect of Chemical Waste from Dyeing Industries in Zaria

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