Effects of climate and land use changes on groundwater resources in coastal aquifers
To estimate the freshwater loss in coastal aquifers due to salinisation, a numerical model based on the sharp interface assumption has been introduced. The developed methodology will be useful in areas where limited hydrological data are available. This model will elaborate on the changes in fresh g...
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| Format: | Journal Article |
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Academic Press
2006
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| Online Access: | http://hdl.handle.net/20.500.11937/42433 |
| _version_ | 1848756418100854784 |
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| author | Sarukkalige, Priyantha Ranjan Kazama, S. Sawamoto, M. |
| author_facet | Sarukkalige, Priyantha Ranjan Kazama, S. Sawamoto, M. |
| author_sort | Sarukkalige, Priyantha Ranjan |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | To estimate the freshwater loss in coastal aquifers due to salinisation, a numerical model based on the sharp interface assumption has been introduced. The developed methodology will be useful in areas where limited hydrological data are available. This model will elaborate on the changes in fresh groundwater loss with respect to climate change, land use pattern and hydrologic soil condition. The aridity index has been introduced to represent the variations in precipitation and temperature. The interesting finding is that the deforestation leads to increase groundwater recharge in arid areas, because deforestation leads to reduce evapotranspiration even though it favors runoff. The combined climate and land use scenarios show that when the aridity index is less than 60, the agricultural lands give higher groundwater recharge than other land use patterns for all hydrologic soil conditions. The calculated recharge was then used to estimate the freshwater–saltwater interface and percentage of freshwater loss due to salinity intrusion. We found that in arid areas, the fresh groundwater loss increases as the percentage of forest cover increases. The combined effects of deforestation and aridity index on fresh groundwater loss show that deforestation causes an increase in the recharge and existing fresh groundwater resource in areas having low precipitation and high temperature (arid climates). |
| first_indexed | 2025-11-14T09:11:53Z |
| format | Journal Article |
| id | curtin-20.500.11937-42433 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:11:53Z |
| publishDate | 2006 |
| publisher | Academic Press |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-424332017-09-13T16:01:01Z Effects of climate and land use changes on groundwater resources in coastal aquifers Sarukkalige, Priyantha Ranjan Kazama, S. Sawamoto, M. salinity intrusion Climate change Freshwater loss Land use To estimate the freshwater loss in coastal aquifers due to salinisation, a numerical model based on the sharp interface assumption has been introduced. The developed methodology will be useful in areas where limited hydrological data are available. This model will elaborate on the changes in fresh groundwater loss with respect to climate change, land use pattern and hydrologic soil condition. The aridity index has been introduced to represent the variations in precipitation and temperature. The interesting finding is that the deforestation leads to increase groundwater recharge in arid areas, because deforestation leads to reduce evapotranspiration even though it favors runoff. The combined climate and land use scenarios show that when the aridity index is less than 60, the agricultural lands give higher groundwater recharge than other land use patterns for all hydrologic soil conditions. The calculated recharge was then used to estimate the freshwater–saltwater interface and percentage of freshwater loss due to salinity intrusion. We found that in arid areas, the fresh groundwater loss increases as the percentage of forest cover increases. The combined effects of deforestation and aridity index on fresh groundwater loss show that deforestation causes an increase in the recharge and existing fresh groundwater resource in areas having low precipitation and high temperature (arid climates). 2006 Journal Article http://hdl.handle.net/20.500.11937/42433 10.1016/j.jenvman.2005.08.008 Academic Press fulltext |
| spellingShingle | salinity intrusion Climate change Freshwater loss Land use Sarukkalige, Priyantha Ranjan Kazama, S. Sawamoto, M. Effects of climate and land use changes on groundwater resources in coastal aquifers |
| title | Effects of climate and land use changes on groundwater resources in coastal aquifers |
| title_full | Effects of climate and land use changes on groundwater resources in coastal aquifers |
| title_fullStr | Effects of climate and land use changes on groundwater resources in coastal aquifers |
| title_full_unstemmed | Effects of climate and land use changes on groundwater resources in coastal aquifers |
| title_short | Effects of climate and land use changes on groundwater resources in coastal aquifers |
| title_sort | effects of climate and land use changes on groundwater resources in coastal aquifers |
| topic | salinity intrusion Climate change Freshwater loss Land use |
| url | http://hdl.handle.net/20.500.11937/42433 |