Spatiotemporal estimation of fresh submarine groundwater discharge across the coastal shorelines of Oahu Island, Hawaii

Ghazal, Kariem Abdulnabi; Leta, Olkeba Tolessa; Dulai, Henrietta

doi:10.2166/bgs.2023.010

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Spatiotemporal estimation of fresh submarine groundwater discharge across the coastal shorelines of Oahu Island, Hawaii

2023
By Ghazal, Kariem Abdulnabi ; Leta, Olkeba Tolessa ; Dulai, Henrietta
Source: Blue-Green Systems, 5(1), 28-40

[PDF-1.21 MB]

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Journal Title:

Blue-Green Systems
Personal Author:

Ghazal, Kariem Abdulnabi ; Leta, Olkeba Tolessa ; Dulai, Henrietta

Ghazal, Kariem Abdulnabi ; Leta, Olkeba Tolessa ; Dulai, Henrietta Less -
NOAA Program & Office:

OAR (Oceanic and Atmospheric Research) ; Sea Grant

OAR (Oceanic and Atmospheric Research) ; Sea Grant Less -
Sea Grant Program:

HAWAU (Hawaii Sea Grant)
Description:

The integrated hydrological model is a powerful tool that is used to assess the temporal distribution of fresh groundwater discharge especially in coastal areas. The coastal regions of Hawaii are examples of crucial natural resources for the Hawaiian economy and general ecological health. To fully comprehend the intricate interactions between coastal hydrology processes and ecosystems, it is necessary to evaluate the fresh submarine groundwater discharge (FSGD) at the Heeia shoreline using an integrated hydrological modeling technique. Under steady-state settings, the results showed that the present daily average of FSGD is around 0.43 m3/days across 1 m of the shoreline. However, we showed that the FSGD values were considerably impacted by climate change, groundwater head of the coastal aquifer, recharge rate, and sea level rise, particularly by the end of the 21st century. The post-development FSGD fluxes were 1.5–3.5 times greater than the freshwater transported by the Heeia stream, demonstrating the considerable contribution of the FSGD to the coastal zones of Heeia. The results also showed an exponential association between the FSGD and the groundwater level for the coastal unconfined aquifer.
Source:

Blue-Green Systems, 5(1), 28-40
DOI:

https://doi.org/10.2166/bgs.2023.010
ISSN:

2617-4782
Format:

PDF
Publisher:

IWA Publishing
Document Type:

Journal Article
Funding:

Grant no. NA14OAR4170071
License:

https://creativecommons.org/licenses/by/4.0/
Rights Information:

CC BY
Compliance:

Submitted
Main Document Checksum:

[+]

urn:sha256:07423281431a756fe06ef02bb56d94f202d56df9324d265fb913ac2e5e509222
Download URL:

https://repository.library.noaa.gov/view/noaa/60947/noaa_60947_DS1.pdf
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Spatiotemporal estimation of fresh submarine groundwater discharge across the coastal shorelines of Oahu Island, Hawaii

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