AI SearchEstimation of safe yield in Mannar Island, Sri Lanka (Record no. 40288)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 03204nam a2200421 4500 |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20260818112531.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 100698 th eng |
| 035 ## - SYSTEM CONTROL NUMBER | |
| System control number | .b10257135 |
| 099 #9 - LOCAL FREE-TEXT CALL NUMBER (OCLC) | |
| Classification number | AIT Thesis no.WA-90-3 |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Amaraweera, H. B. M. P. |
| 245 10 - TITLE STATEMENT | |
| Title | Estimation of safe yield in Mannar Island, Sri Lanka |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Place of publication, distribution, etc. | Bangkok : |
| Name of publisher, distributor, etc. | Asian Institute of Technology, |
| Date of publication, distribution, etc. | 1990 |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | 108 p. |
| 490 1# - SERIES STATEMENT | |
| Series statement | Thesis ; |
| Volume/sequential designation | no. WA-90-3 |
| 500 ## - GENERAL NOTE | |
| General note | A thesis submitted in partial fulfillment of the requirements for the degree of Master of Engineering, School of Engineering and Technology |
| 502 ## - DISSERTATION NOTE | |
| Dissertation note | Thesis (M.Eng.) - Asian Institute of Technology, 1990 |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | Commercial developments in the island of Mannar in Sri Lanka over the past few years have made estimation of safe yield a very important requirement. But this estimation process is complicated due to the absence of sufficient field data and the occurrence of aquifer as a thin lens floating over saline water. This study is an attempt towards applying approximate solution to analyse this problem. The first approximation of the recharge to the fresh water lens is obtained by a Water Balance Study incorporating Hydrological Budget and Soil Moisture Balance. During the estimation, 36 trials are generated considering the factors influencing soil moisture balance. The recharge estimation done in this part of the study are refined by the analysis of fresh-salt water interface movement. For this purpose, approximate solutions derived by HANTUSH (1968) are used with relevant modification to the study area. An abstraction rate of 1.5 times the present level (1988) is found to be safe on the long term basis. It is also found from this study, that during a drought period, doubling of the present level of abstraction is not undesirable for a limited period of time, but careful monitoring of chloride content of pumped water has to be accompanied. |
| 650 #0 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Water, Underground |
| General subdivision | Sri Lanka |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Gupta, Ashim Das, |
| Relator term | Chairperson |
| 700 0# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Suphat Vongvisessomjai, |
| Relator term | Examination Committee |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Loof, Rainer, |
| Relator term | Examination Committee |
| 710 2# - ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | The Canadian International Development Agency-A.I.T. Partnership Program., |
| Relator term | Scholarship Donor |
| 810 2# - SERIES ADDED ENTRY--CORPORATE NAME | |
| Corporate name or jurisdiction name as entry element | Asian Institute of Technology. |
| Title of a work | Thesis ; |
| Volume/sequential designation | no. WA-90-3 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Materials specified | Full-Text |
| Uniform Resource Identifier | <a href="http://203.159.5.9/ait-thesis/detail.php?q=B18581">http://203.159.5.9/ait-thesis/detail.php?q=B18581</a> |
| 907 ## - LOCAL DATA ELEMENT G, LDG (RLIN) | |
| a | .b10257135 |
| b | mnait |
| c | s |
| 902 ## - LOCAL DATA ELEMENT B, LDB (RLIN) | |
| a | 240401 |
| 998 ## - LOCAL CONTROL INFORMATION (RLIN) | |
| Operator's initials, OID (RLIN) | 2 |
| Cataloger's initials, CIN (RLIN) | 951012 |
| First date, FD (RLIN) | m |
| -- | a |
| -- | s |
| -- | 0 |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnait |
| 945 ## - LOCAL PROCESSING INFORMATION (OCLC) | |
| l | mnarc |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 22-AIT Thesis (Replacement) |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 40-Archives |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | 20-AIT Publication |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050120574354 |
| CREATED | CREATED : 2014-01-04 |
| RECORD Id | RECORD # : i12785027 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050160033998 |
| CREATED | CREATED : 2016-12-02 |
| RECORD Id | RECORD # : i12881156 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| 909 ## - LOCAL ITEMS USED | |
| Barcode | Barcode : 30050121028178 |
| CREATED | CREATED : 2022-10-18 |
| RECORD Id | RECORD # : i13408586 |
| LPATRON | LPATRON : 0 |
| LCHKIN | LCHKIN : - |
| RENEWALS | # RENEWALS : 0 |
| -- | # OVERDUE : 0 |
| -- | IUSE3 : 0 |
| -- | TOT CHKOUT : 0 |
| -- | TOT RENEW : 0 |
| Withdrawn status | Lost status | Damaged status | Not for loan | Home library | Current library | Shelving location | Date acquired | Cost, normal purchase price | Total checkouts | Full call number | Barcode | Date last seen | Copy number | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 18/08/2026 | 50.00 | AIT Thesis no.WA-90-3 | 30050120574354 | 18/08/2026 | 3 | 18/08/2026 | 22-AIT Thesis (Replacement) | ||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | Archives | 18/08/2026 | AIT Thesis no.WA-90-3 | 30050160033998 | 18/08/2026 | 18/08/2026 | 40-Archives | ||||||
| Available for Loans | Asian Institute of Technology Library | Asian Institute of Technology Library | AIT Publications | 18/08/2026 | 50.00 | AIT Thesis no.WA-90-3 | 30050121028178 | 18/08/2026 | 1 | 18/08/2026 | 20-AIT Publication |