Is saltwater intrusion occurring from the Avon River into the shallow aquifer in Christchurch, New Zealand?
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Conference Contributions - Other
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Date
2019
Authors
Simpson, Natasha
Setiawan, Irene
Morgan, Leanne K.
Abstract
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Introduction:Seawater intrusion (SI) is the landward movement of saltwater into fresh coastal
aquifers. SI is a global issue intensified by climate change-induced sea-level rise.
Tidal rivers are a source of saltwater that can render the adjacent shallow aquifer
vulnerable to SI (Fig. 1). In this study, we investigated the potential for SI from the
tidal Avon River into the adjacent unconfined aquifer in Christchurch. We add to
previous work by Rutter1
that identified temperature fluctuations with tide within a
number of shallow monitoring wells near the Avon River. Our study aims to identify
whether solute transport is occurring from the river into the adjacent aquifer.
Citation
Simpson, N., Setiawan, I., & Morgan L.K. (2019). Is saltwater intrusion occurring from the Avon River into the shallow aquifer in Christchurch, New Zealand? Poster at Waterways Postgraduate Conference, Lincoln University on 19 November 2019. doi:10.18124/yzqq-cv77
Keywords
seawater intrusion, tidal river, salinity, tidal fluctuation
Ngā upoko tukutuku/Māori subject headings
ANZSRC fields of research
Field of Research::04 - Earth Sciences::0406 - Physical Geography and Environmental Geoscience::040603 - Hydrogeology
Fields of Research::37 - Earth sciences::3707 - Hydrology::370704 - Surface water hydrology
Fields of Research::41 - Environmental sciences::4104 - Environmental management::410406 - Natural resource management
Field of Research::05 - Environmental Sciences::0502 - Environmental Science and Management::050206 - Environmental Monitoring
Fields of Research::37 - Earth sciences::3707 - Hydrology::370704 - Surface water hydrology
Fields of Research::41 - Environmental sciences::4104 - Environmental management::410406 - Natural resource management
Field of Research::05 - Environmental Sciences::0502 - Environmental Science and Management::050206 - Environmental Monitoring