A radioisotope tracer investigation to determine the direction of groundwater movement adjacent to a tidal creek during spring and neap tides

Simple item page
dc.contributor.authorAcworth, RIen_AU
dc.contributor.authorHughes, CEen_AU
dc.contributor.authorTurner, ILen_AU
dc.date.accessioned2013-11-05T05:22:16Zen_AU
dc.date.available2013-11-05T05:22:16Zen_AU
dc.date.issued2007-03-01en_AU
dc.date.statistics2013-11-05en_AU
dc.description.abstractA radioisotope tracer (82Br) was injected into a sand aquifer adjacent to a tidal creek at Hat Head, New South Wales, Australia. The injection was timed to coincide with the falling limb of a spring tide in August 2001 and was repeated in July 2002 during a period of neap tides. The tracer movement was detected using gamma logging and fixed gamma detectors in a bore 0.9 m from an injection bore and in a line approximately perpendicular to the creek. Movement of the tracer was detected by comparing measured gamma activity with calibrated activities determined under laboratory conditions. Net movement of the tracer indicated approximately 0.001 m/day laterally towards the creek and 0.07 m/day vertically upward during spring tide conditions. This pattern is reversed during neap tide conditions with little net vertical movement but horizontal movement of 0.15 m/day. The measurements indicated an oscillatory motion coinciding with the tide but lagging the tide by approximately 4.5–6.5 h. The vertical flow during spring tides indicates that vertical movement of the saline interface occurs and results in mixing of different water types beneath the banks of the creek.© 2007, Springer.en_AU
dc.identifier.citationAcworth, R. I., Hughes, C. E., & Turner, I. L. (2007). A radioisotope tracer investigation to determine the direction of groundwater movement adjacent to a tidal creek during spring and neap tides. Hydrogeology Journal, 15(2), 281-296. doi:10.1007/s10040-006-0085-5en_AU
dc.identifier.govdoc5224en_AU
dc.identifier.issn1431-2174en_AU
dc.identifier.issue2en_AU
dc.identifier.journaltitleHydrogeology Journalen_AU
dc.identifier.pagination281-296en_AU
dc.identifier.urihttps://doi.org/10.1007/s10040-006-0085-5en_AU
dc.identifier.urihttp://apo.ansto.gov.au/dspace/handle/10238/4882en_AU
dc.identifier.volume15en_AU
dc.language.isoenen_AU
dc.publisherSpringer-Verlagen_AU
dc.subjectGround wateren_AU
dc.subjectSanden_AU
dc.subjectGamma detectionen_AU
dc.subjectTideen_AU
dc.subjectStreamsen_AU
dc.subjectAquifersen_AU
dc.titleA radioisotope tracer investigation to determine the direction of groundwater movement adjacent to a tidal creek during spring and neap tidesen_AU
dc.typeJournal Articleen_AU
Files
License bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
Journal Articles