Effects of Recharge Wells and Flow Barriers on Seawater Intrusion
Luyun, Roger ; Momii, Kazuro and Nakagawa, Kei LU
(2011)
In Ground Water
49(2).
p.239-249
- Abstract
The installation of recharge wells and subsurface flow barriers are among several strategies proposed to control seawater intrusion on coastal groundwater systems. In this study, we performed laboratory-scale experiments and numerical simulations to determine the effects of the location and application of recharge wells, and of the location and penetration depth of flow barriers, on controlling seawater intrusion in unconfined coastal aquifers. We also compared the experimental results with existing analytical solutions. Our results showed that more effective saltwater repulsion is achieved when the recharge water is injected at the toe of the saltwater wedge. Point injection yields about the same repulsion compared with line injection... (More)
The installation of recharge wells and subsurface flow barriers are among several strategies proposed to control seawater intrusion on coastal groundwater systems. In this study, we performed laboratory-scale experiments and numerical simulations to determine the effects of the location and application of recharge wells, and of the location and penetration depth of flow barriers, on controlling seawater intrusion in unconfined coastal aquifers. We also compared the experimental results with existing analytical solutions. Our results showed that more effective saltwater repulsion is achieved when the recharge water is injected at the toe of the saltwater wedge. Point injection yields about the same repulsion compared with line injection from a screened well for the same recharge rate. Results for flow barriers showed that more effective saltwater repulsion is achieved with deeper barrier penetration and with barriers located closer to the coast. When the flow barrier is installed inland from the original toe position however, saltwater intrusion increases with deeper barrier penetration. Saltwater repulsion due to flow barrier installation was found to be linearly related to horizontal barrier location and a polynomial function of the barrier penetration depth.
(Less)
- author
- Luyun, Roger
; Momii, Kazuro
and Nakagawa, Kei
LU
- publishing date
- 2011-03-01
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Ground Water
- volume
- 49
- issue
- 2
- pages
- 11 pages
- publisher
- John Wiley & Sons Inc.
- external identifiers
-
- pmid:20533955
- scopus:79951818851
- ISSN
- 0017-467X
- DOI
- 10.1111/j.1745-6584.2010.00719.x
- language
- English
- LU publication?
- no
- id
- 198a8d5b-44dc-4522-84c3-149b79183e3e
- date added to LUP
- 2019-01-02 01:32:02
- date last changed
- 2024-09-17 10:55:50
@article{198a8d5b-44dc-4522-84c3-149b79183e3e,
abstract = {{<p>The installation of recharge wells and subsurface flow barriers are among several strategies proposed to control seawater intrusion on coastal groundwater systems. In this study, we performed laboratory-scale experiments and numerical simulations to determine the effects of the location and application of recharge wells, and of the location and penetration depth of flow barriers, on controlling seawater intrusion in unconfined coastal aquifers. We also compared the experimental results with existing analytical solutions. Our results showed that more effective saltwater repulsion is achieved when the recharge water is injected at the toe of the saltwater wedge. Point injection yields about the same repulsion compared with line injection from a screened well for the same recharge rate. Results for flow barriers showed that more effective saltwater repulsion is achieved with deeper barrier penetration and with barriers located closer to the coast. When the flow barrier is installed inland from the original toe position however, saltwater intrusion increases with deeper barrier penetration. Saltwater repulsion due to flow barrier installation was found to be linearly related to horizontal barrier location and a polynomial function of the barrier penetration depth.</p>}},
author = {{Luyun, Roger and Momii, Kazuro and Nakagawa, Kei}},
issn = {{0017-467X}},
language = {{eng}},
month = {{03}},
number = {{2}},
pages = {{239--249}},
publisher = {{John Wiley & Sons Inc.}},
series = {{Ground Water}},
title = {{Effects of Recharge Wells and Flow Barriers on Seawater Intrusion}},
url = {{http://dx.doi.org/10.1111/j.1745-6584.2010.00719.x}},
doi = {{10.1111/j.1745-6584.2010.00719.x}},
volume = {{49}},
year = {{2011}},
}