Evaluation of Isotope Hydrology in Wetlands in North of Iran and Grouping of them by Principal Component Analysis
In order to assess the isotope hydrology in different water reservoirs in the north of Iran and to group them in relation to different chemical and physiographical parameters on catchment scale, an extensive study was conducted during 2010 to 2011 in 30 different wetlands. The samples were collected...
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| Format: | Article |
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Nuclear Science and Technology Research Institute
2014-08-01
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| Series: | مجله علوم و فنون هسته‌ای |
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| Online Access: | https://jonsat.nstri.ir/article_26_78dfa89fc8972f1a9c90a7cf320973ce.pdf |
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| author | Mir Ahmad Mousavi Shalmani Reza Khorasani Nejat Pirvali Beiravand Vali Feiziasl Korosh Kamali Ebrahim Moghiseh Nazanin Pourmohammad |
| author_facet | Mir Ahmad Mousavi Shalmani Reza Khorasani Nejat Pirvali Beiravand Vali Feiziasl Korosh Kamali Ebrahim Moghiseh Nazanin Pourmohammad |
| author_sort | Mir Ahmad Mousavi Shalmani |
| collection | DOAJ |
| description | In order to assess the isotope hydrology in different water reservoirs in the north of Iran and to group them in relation to different chemical and physiographical parameters on catchment scale, an extensive study was conducted during 2010 to 2011 in 30 different wetlands. The samples were collected at three different seasons and analyzed for chemical and isotopic components. The isotopic data show that the selected wetlands cover a wide range of isotopic signatures, affected by climate, hydrology and local seasonal parameters. In most wetlands, the isotopic signatures in winter were lower than these in other seasons. The amount of deuterium excess was decreased from winter to spring by 12.86‰ to 0.83‰. These downward trends were continued during the spring to summer by 0.83‰ to -2.89 ‰. The results of principal components analysis (PCA) indicate that there are eight significant justifiable components with eigenvalue more than one which could describe differences between ponds (by 72%) in catchment scale in our experiment. The data showed that there is a significant decrease in d-excess during spring and summer in ponds 20, 21, 22, 24, 25 and 26 indicating the presence of light isotopes in these ponds. Physical separation of 18O and 2H by water molecules and prevalence of 2H in the movements led to increment of d-excess in most wetlands. This has led to d-excess of pond 12 even greater in summer than in winter. This could be an acceptable reason for ponds 25 and 26 (Siyahkal county) with the highest amount of d-excess and the lowest amounts of 18O and 2H. It seems that light water pumped from groundwater wells with minor source of salt (originated from sea deep percolation) into the ponds, may be another reason for the significant decrease in the heavy isotopes of water (18O and 2H) as for the ponds 2, 12, 14 and 25 from spring to summer. |
| first_indexed | 2024-04-09T14:47:21Z |
| format | Article |
| id | doaj.art-03247f96020f49a983bd27241fd13b2b |
| institution | Directory Open Access Journal |
| issn | 1735-1871 2676-5861 |
| language | fas |
| last_indexed | 2024-04-09T14:47:21Z |
| publishDate | 2014-08-01 |
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| series | مجله علوم و فنون هسته‌ای |
| spelling | doaj.art-03247f96020f49a983bd27241fd13b2b2023-05-02T10:31:13ZfasNuclear Science and Technology Research Instituteمجله علوم و فنون هسته‌ای1735-18712676-58612014-08-01352102226Evaluation of Isotope Hydrology in Wetlands in North of Iran and Grouping of them by Principal Component AnalysisMir Ahmad Mousavi Shalmani0Reza Khorasani1Nejat Pirvali Beiravand2Vali Feiziasl3Korosh Kamali4Ebrahim Moghiseh5Nazanin Pourmohammad6پژوهشکده ی تحقیقات کشاورزی، پزشکی و صنعتی، پژوهشگاه علوم و فنون هسته‌ای، سازمان انرژی اتمی ایران، صندوق پستی: 498-31485، کرج ـ ایرانگروه علوم خاک، دانشکده کشاورزی، دانشگاه فردوسی مشهد، صندوق پستی: 1163، مشهد ـ ایرانپژوهشکده ی تحقیقات کشاورزی، پزشکی و صنعتی، پژوهشگاه علوم و فنون هسته‌ای، سازمان انرژی اتمی ایران، صندوق پستی: 498-31485، کرج ـ ایرانمؤسسه ی تحقیقات کشاورزی دیم کشور، وزارت جهاد کشاورزی، صندوق پستی: 119، مراغه ـ ایرانپژوهشکده ی حفاظت خاک و آبخیزداری، وزارت جهاد کشاورزی، صندوق پستی: 1136-13445، تهران ـ ایرانپژوهشکده ی تحقیقات کشاورزی، پزشکی و صنعتی، پژوهشگاه علوم و فنون هسته ای، سازمان انرژی اتمی ایران، صندوق پستی: 498-31485، کرج ـ ایرانپژوهشکده ی تحقیقات کشاورزی، پزشکی و صنعتی، پژوهشگاه علوم و فنون هسته ای، سازمان انرژی اتمی ایران، صندوق پستی: 498-31485، کرج ـ ایرانIn order to assess the isotope hydrology in different water reservoirs in the north of Iran and to group them in relation to different chemical and physiographical parameters on catchment scale, an extensive study was conducted during 2010 to 2011 in 30 different wetlands. The samples were collected at three different seasons and analyzed for chemical and isotopic components. The isotopic data show that the selected wetlands cover a wide range of isotopic signatures, affected by climate, hydrology and local seasonal parameters. In most wetlands, the isotopic signatures in winter were lower than these in other seasons. The amount of deuterium excess was decreased from winter to spring by 12.86‰ to 0.83‰. These downward trends were continued during the spring to summer by 0.83‰ to -2.89 ‰. The results of principal components analysis (PCA) indicate that there are eight significant justifiable components with eigenvalue more than one which could describe differences between ponds (by 72%) in catchment scale in our experiment. The data showed that there is a significant decrease in d-excess during spring and summer in ponds 20, 21, 22, 24, 25 and 26 indicating the presence of light isotopes in these ponds. Physical separation of 18O and 2H by water molecules and prevalence of 2H in the movements led to increment of d-excess in most wetlands. This has led to d-excess of pond 12 even greater in summer than in winter. This could be an acceptable reason for ponds 25 and 26 (Siyahkal county) with the highest amount of d-excess and the lowest amounts of 18O and 2H. It seems that light water pumped from groundwater wells with minor source of salt (originated from sea deep percolation) into the ponds, may be another reason for the significant decrease in the heavy isotopes of water (18O and 2H) as for the ponds 2, 12, 14 and 25 from spring to summer.https://jonsat.nstri.ir/article_26_78dfa89fc8972f1a9c90a7cf320973ce.pdfisotope hydrologywetlandsprincipal component analysis18o2hgrouping |
| spellingShingle | Mir Ahmad Mousavi Shalmani Reza Khorasani Nejat Pirvali Beiravand Vali Feiziasl Korosh Kamali Ebrahim Moghiseh Nazanin Pourmohammad Evaluation of Isotope Hydrology in Wetlands in North of Iran and Grouping of them by Principal Component Analysis مجله علوم و فنون هسته‌ای isotope hydrology wetlands principal component analysis 18o 2h grouping |
| title | Evaluation of Isotope Hydrology in Wetlands in North of Iran and Grouping of them by Principal Component Analysis |
| title_full | Evaluation of Isotope Hydrology in Wetlands in North of Iran and Grouping of them by Principal Component Analysis |
| title_fullStr | Evaluation of Isotope Hydrology in Wetlands in North of Iran and Grouping of them by Principal Component Analysis |
| title_full_unstemmed | Evaluation of Isotope Hydrology in Wetlands in North of Iran and Grouping of them by Principal Component Analysis |
| title_short | Evaluation of Isotope Hydrology in Wetlands in North of Iran and Grouping of them by Principal Component Analysis |
| title_sort | evaluation of isotope hydrology in wetlands in north of iran and grouping of them by principal component analysis |
| topic | isotope hydrology wetlands principal component analysis 18o 2h grouping |
| url | https://jonsat.nstri.ir/article_26_78dfa89fc8972f1a9c90a7cf320973ce.pdf |
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