Seasonal Groundwater Level Fluctuations In Sukhuma District Of Southern Laos

Ball, JE; Vongphachanh, S; Milne-Home, W; Das Gupta, A

Seasonal Groundwater Level Fluctuations In Sukhuma District Of Southern Laos

Ball, JE

Vongphachanh, S

Milne-Home, W Das Gupta, A

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Publisher:: IAHR
Publication Type:: Conference Proceeding
Citation:: Proceedings of the 37th IAHR World Congress, 2017, pp. 5006 - 5014
Issue Date:: 2017-08-13

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Field	Value	Language
dc.contributor.author	Ball, JE https://orcid.org/0000-0001-8342-1916	en_US
dc.contributor.author	Vongphachanh, S https://orcid.org/0000-0001-8012-5943	en_US
dc.contributor.author	Milne-Home, W	en_US
dc.contributor.author	Das Gupta, A	en_US
dc.contributor.editor	Ghani, AA	en_US
dc.date	2017-08-13	en_US
dc.date.issued	2017-08-13	en_US
dc.identifier.citation	Proceedings of the 37th IAHR World Congress, 2017, pp. 5006 - 5014	en_US
dc.identifier.issn	1562-6865	en_US
dc.identifier.uri	http://hdl.handle.net/10453/118935
dc.description.abstract	The objective of this study is to investigate the seasonal fluctuation of groundwater level in Sukhuma District by using observed data on groundwater, rainfall and streamflow from June 2015 to May 2016 and remote sensing data derived from the Gravity Recovery and Climate Experiment (GRACE) and the Global Land Data Assimilation System (GLDAS) for the period of June 2015 to March 2016. The results show that the groundwater level in Sukhuma District increased to the peak elevation during the late wet season (September – October) and it started declining from November until reached the lowest elevation during the late dry season (April – May). Rainfall was found at a significant (P<0.01) factor influencing the groundwater level fluctuation. The delay time between rainfall and groundwater level rise was also estimated at about 4 weeks. Moreover, the results also show that groundwater level during the study period in Sukhuma District was not yet depleted. However, the time-series for this analysis is very short to investigate the trend of groundwater level in Sukhuma District. The results of this research also showed good correlation between the soil moisture from GLDAS and groundwater level measurement in Sukhuma District (R2 = 0.91) and also showed a good agreement between the soil moisture from GLDAS at a GRACE footprint and the equivalent water height (EWH) derived from GRACE at a GRACE footprint with an R2 value of 0.72. Therefore, regarding the results of this study, a further investigation using these remote sensing data for groundwater study in this region will be carried out to support in groundwater study for Sukhuma and Southern Laos. The products from GRACE and GLDAS will provide pivotal data for the study of hydrogeology in the areas with limited field observation data.	en_US
dc.publisher	IAHR	en_US
dc.relation.ispartof	Proceedings of the 37th IAHR World Congress	en_US
dc.relation.ispartof	37th IAHR World Congress	en_US
dc.subject.classification	Acoustics	en_US
dc.title	Seasonal Groundwater Level Fluctuations In Sukhuma District Of Southern Laos	en_US
dc.type	Conference Proceeding
utslib.location	Kuala Lumpur, Malaysia	en_US
utslib.location.activity	Kuala Lumpur	en_US
utslib.for	040603 Hydrogeology	en_US
utslib.for	0203 Classical Physics	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
pubs.organisational-group	/University of Technology Sydney/Students
utslib.copyright.status	closed_access
pubs.consider-herdc	true	en_US
pubs.finish-date	2017-08-18	en_US
pubs.place-of-publication	Kuala Lumpur, Malaysia	en_US
pubs.publication-status	Published	en_US
pubs.start-date	2017-08-13	en_US

Abstract:

The objective of this study is to investigate the seasonal fluctuation of groundwater level in Sukhuma District by using observed data on groundwater, rainfall and streamflow from June 2015 to May 2016 and remote sensing data derived from the Gravity Recovery and Climate Experiment (GRACE) and the Global Land Data Assimilation System (GLDAS) for the period of June 2015 to March 2016. The results show that the groundwater level in Sukhuma District increased to the peak elevation during the late wet season (September – October) and it started declining from November until reached the lowest elevation during the late dry season (April – May). Rainfall was found at a significant (P<0.01) factor influencing the groundwater level fluctuation. The delay time between rainfall and groundwater level rise was also estimated at about 4 weeks. Moreover, the results also show that groundwater level during the study period in Sukhuma District was not yet depleted. However, the time-series for this analysis is very short to investigate the trend of groundwater level in Sukhuma District. The results of this research also showed good correlation between the soil moisture from GLDAS and groundwater level measurement in Sukhuma District (R2 = 0.91) and also showed a good agreement between the soil moisture from GLDAS at a GRACE footprint and the equivalent water height (EWH) derived from GRACE at a GRACE footprint with an R2 value of 0.72. Therefore, regarding the results of this study, a further investigation using these remote sensing data for groundwater study in this region will be carried out to support in groundwater study for Sukhuma and Southern Laos. The products from GRACE and GLDAS will provide pivotal data for the study of hydrogeology in the areas with limited field observation data.

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http://hdl.handle.net/10453/118935