Controls of evaporative irrigation return flows in comparison to seawater intrusion in coastal karstic aquifers in northern Sri Lanka: evidence from solutes and stable isotopes (Record no. 55172)
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| 000 -LEADER | |
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| fixed length control field | 02997nam a2200301Ia 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | MX-MdCICY |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20250625162501.0 |
| 040 ## - CATALOGING SOURCE | |
| Transcribing agency | CICY |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) | |
| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) | B-21094 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 250602s9999 xx |||||s2 |||| ||und|d |
| 245 10 - TITLE STATEMENT | |
| Title | Controls of evaporative irrigation return flows in comparison to seawater intrusion in coastal karstic aquifers in northern Sri Lanka: evidence from solutes and stable isotopes |
| 490 0# - SERIES STATEMENT | |
| Volume/sequential designation | Science of the Total Environment, 548, p.421-428, 2016 |
| 520 3# - SUMMARY, ETC. | |
| Summary, etc. | Groundwater in Miocene karstic aquifers in the Jaffna Peninsula of Sri Lanka is an important resource since no other fresh water sources are available in the region. The subsurface is characterized by highly productive limestone aquifers that are used for drinking and agriculture purposes. A comprehensive hydrogeochemical study was carried out to reveal the processes affecting the groundwater quality in this region.Major and trace element composition and environmental isotope ratios of oxygen and hydrogen (?18OH2O and ?2HH2O)were determined in 35 groundwater samples for this investigation. The ion abundance of groundwater in the region was characterized by an anion sequence orderwith HCO3? N Cl? N SO4? N NO3?. For cations, average Na++K+ contents in groundwater exceeded those of Ca2++Mg2+ in most cases. Ionic relationships of major solutes indicated open system calcite dissolution while seawater intrusions are also evident but only close to the coast. The solute contents are enriched by agricultural irrigation returns and associated evaporation. This was confirmed by the stable isotope composition of groundwater that deviated fromthe localmeteoricwater line (LMWL)and formed its own regression line denoted as the local evaporation line (LEL). The latter can be described by ?2HH2O = 5.8 × ?18OH2O -- 2.9. Increased contents of nitrate-N (up to 5 mg/L), sulfate (up to 430 mg/L)and fluoride (up to 1.5 mg/L)provided evidences for anthropogenic inputs of solutes, most likely from agriculture activities. Among trace elements Ba, Sr, As and Se levels in the Jaffna groundwaterwere higher compared to that of the dry zone metamorphic aquifers in Sri Lanka. Solute geochemistry and stable isotope evidences from the región indicates that groundwater in the area is mainly derived from local modern precipitation but modified heavily by progressive evaporative concentration rather than seawater intrusion. |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | WATER STABLE ISOTOPES |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | CALCITE DISSOLUTION |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | CARBONATE AQUIFERS |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | IRRIGATION RETURN FLOWS |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | GROUNDWATER QUALITY |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | SELENIUM |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Chandrajith, R. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Diyabalanage, S. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Premathilake, K. M. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Hanke, C. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Van Geldern, R. |
| 700 12 - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Barth, J. A. |
| 856 40 - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | <a href="https://drive.google.com/open?id=1Dd5CSDxFXTTFg_8Oc0Q2hu-ivAhG61ZA&usp=drive_copy">https://drive.google.com/open?id=1Dd5CSDxFXTTFg_8Oc0Q2hu-ivAhG61ZA&usp=drive_copy</a> |
| Public note | Para ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Clasificación local |
| Koha item type | Documentos solicitados |
| Lost status | Source of classification or shelving scheme | Damaged status | Not for loan | Collection | Home library | Current library | Shelving location | Date acquired | Total checkouts | Full call number | Date last seen | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clasificación local | Ref1 | CICY | CICY | Documento préstamo interbibliotecario | 25.06.2025 | B-21094 | 25.06.2025 | 25.06.2025 | Documentos solicitados |