Traditional and novel time-series approaches reveal submarine groundwater discharge dynamics under baseline and extreme event conditions

Abstract Groundwater is a vital resource for humans and groundwater dependent ecosystems. Coastal aquifers and submarine groundwater discharge (SGD), both influenced by terrestrial and marine forces, are increasingly affected by climate variations and sea-level rise. Despite this, coastal groundwate...

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Autores principales:	Trista McKenzie, Henrietta Dulai, Peter Fuleky
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/4ad80e73ddbe4c609d2a989071d2c7ab
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spelling	oai:doaj.org-article:4ad80e73ddbe4c609d2a989071d2c7ab2021-11-21T12:23:55ZTraditional and novel time-series approaches reveal submarine groundwater discharge dynamics under baseline and extreme event conditions10.1038/s41598-021-01920-02045-2322https://doaj.org/article/4ad80e73ddbe4c609d2a989071d2c7ab2021-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-01920-0https://doaj.org/toc/2045-2322Abstract Groundwater is a vital resource for humans and groundwater dependent ecosystems. Coastal aquifers and submarine groundwater discharge (SGD), both influenced by terrestrial and marine forces, are increasingly affected by climate variations and sea-level rise. Despite this, coastal groundwater resources and discharge are frequently poorly constrained, limiting our understanding of aquifer responses to external forces. We apply traditional and novel time-series approaches using an SGD dataset of previously unpublished resolution and duration, to analyze the dependencies between precipitation, groundwater level, and SGD at a model site (Kīholo Bay, Hawaiʻi). Our objectives include (1) determining the relative contribution of SGD drivers over tidal and seasonal periods, (2) establishing temporal relationships and thresholds of processes influencing SGD, and (3) evaluating the impacts of anomalous events, such as tropical storms, on SGD. This analysis reveals, for example, that precipitation is only a dominant influence during wet periods, and otherwise tides and waves dictate the dynamics of SGD. It also provides time lags between intense storm events and higher SGD rates, as well as thresholds for precipitation, wave height and tides affecting SGD. Overall, we demonstrate an approach for modeling a hydrological system while elucidating coastal aquifer and SGD response in unprecedented detail.Trista McKenzieHenrietta DulaiPeter FulekyNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-14 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Trista McKenzie Henrietta Dulai Peter Fuleky Traditional and novel time-series approaches reveal submarine groundwater discharge dynamics under baseline and extreme event conditions
description	Abstract Groundwater is a vital resource for humans and groundwater dependent ecosystems. Coastal aquifers and submarine groundwater discharge (SGD), both influenced by terrestrial and marine forces, are increasingly affected by climate variations and sea-level rise. Despite this, coastal groundwater resources and discharge are frequently poorly constrained, limiting our understanding of aquifer responses to external forces. We apply traditional and novel time-series approaches using an SGD dataset of previously unpublished resolution and duration, to analyze the dependencies between precipitation, groundwater level, and SGD at a model site (Kīholo Bay, Hawaiʻi). Our objectives include (1) determining the relative contribution of SGD drivers over tidal and seasonal periods, (2) establishing temporal relationships and thresholds of processes influencing SGD, and (3) evaluating the impacts of anomalous events, such as tropical storms, on SGD. This analysis reveals, for example, that precipitation is only a dominant influence during wet periods, and otherwise tides and waves dictate the dynamics of SGD. It also provides time lags between intense storm events and higher SGD rates, as well as thresholds for precipitation, wave height and tides affecting SGD. Overall, we demonstrate an approach for modeling a hydrological system while elucidating coastal aquifer and SGD response in unprecedented detail.
format	article
author	Trista McKenzie Henrietta Dulai Peter Fuleky
author_facet	Trista McKenzie Henrietta Dulai Peter Fuleky
author_sort	Trista McKenzie
title	Traditional and novel time-series approaches reveal submarine groundwater discharge dynamics under baseline and extreme event conditions
title_short	Traditional and novel time-series approaches reveal submarine groundwater discharge dynamics under baseline and extreme event conditions
title_full	Traditional and novel time-series approaches reveal submarine groundwater discharge dynamics under baseline and extreme event conditions
title_fullStr	Traditional and novel time-series approaches reveal submarine groundwater discharge dynamics under baseline and extreme event conditions
title_full_unstemmed	Traditional and novel time-series approaches reveal submarine groundwater discharge dynamics under baseline and extreme event conditions
title_sort	traditional and novel time-series approaches reveal submarine groundwater discharge dynamics under baseline and extreme event conditions
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/4ad80e73ddbe4c609d2a989071d2c7ab
work_keys_str_mv	AT tristamckenzie traditionalandnoveltimeseriesapproachesrevealsubmarinegroundwaterdischargedynamicsunderbaselineandextremeeventconditions AT henriettadulai traditionalandnoveltimeseriesapproachesrevealsubmarinegroundwaterdischargedynamicsunderbaselineandextremeeventconditions AT peterfuleky traditionalandnoveltimeseriesapproachesrevealsubmarinegroundwaterdischargedynamicsunderbaselineandextremeeventconditions
_version_	1718419062033219584

Traditional and novel time-series approaches reveal submarine groundwater discharge dynamics under baseline and extreme event conditions

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