Evaluation of submarine groundwater discharge (SGD) volume using 222Rn spatial and temporal variations, case study, south Japan

Document Type : علمی -پژوهشی

Abstract

Submarine groundwater discharge (SGD) has addressed recently as part of the hydrologic cycle by which solutes and other pollutants travel from terrestrial areas toward the coastal waters. 222Rn as a naturally occurring geochemical radioisotope tracer can be applied for indirect regional SGD studies. This study aims to estimate the net SGD volume toward the northern coastline of the Yatsushiro Sea, south Japan, using the 222Rn method. For this, areas with high SGD potential calculated. Then, seawater 222Rn concentration time series recorded in selected points to evaluate the SGD temporal fluctuations and it`s correlation with tidal cycles. Also, corrections conducted over the 222Rn time series to remove the 222Rn noise originated from the rivers discharging into the bay. The results applied to simulate the seawater 222Rn concentration and to estimate the SGD rate in the study area. Finally, the spatial and temporal 222Rn analysis results combined to estimate the SGD net volume. The results show that the SGD volume in the study area is about 0.92×106 m3 day-1.

Keywords

References

  1. -Burnett, W.C., 1999. Offshore springs and seeps are focus of working group, Eos Trans, AGU 80, p. 13-15.
  2. -Burnett, W.C., Bokuniewicz, H., Huettle, M., Moore, W.S. and Taniguchi, M., 2003a. Groundwater and pore water inputs to the coastal zone, Biogeochemistry, v. 66, p. 3-33.
  3. -Burnett, W.C., Cable, J.E. and Corbett, D.R., 2003b. Radon Tracing of Submarine Groundwater Discharge in Coastal Environments, Land and Marine Hydrogeology, ISBN: 978-0-444-51479-0, p. 25-43.
  4. -Burnett, W.C., Cable, J.E., Corbctt, D.R. and Chanton, J.P., 1996. Tracing groundwater flow into surface waters using natural 222Rn, Proceedings of the International Symposium on Groundwater Discharge in the Coastal Zone, Land–Ocean Interactions in the Coastal Zone (LOICZ), Moscow, July, v. 6–10, p. 22-28.
  5. -Burnett, W.C., Cowart, J.B. and Deetae, S., 1990. Radium in the Suwannee River and Estuary: Spring and river input to the Gulf of Mexico.Biogcochemistry, v. 10, p. 237-255.
  6. -Burnett, W.C. and Dulaiova, H., 2003. Estimating the dynamics of groundwater input into the coastal zone via continuous radon-222 measurements, Journal of Environmental Radioactivity, v. 69, p. 21-35.
  7. -Burnett, W.C., Kim, G. and Lane-Smith, D., 2001b. A continuous monitor for assessment of 222Rn in the coastal ocean, J. Radioanalytical and Nuclear Chemistry, v. 249(1), p. 167-172.
  8. -Burnett, W.C., Taniguchi, M. and Oberdorfer, J.A., 2001a. Measurement and significance of the direct discharge of groundwater into the coastal zone Journal of Sea Research, v. 46(2), p. 109-116.
  9. -Cable, J.E., Bugna, G.C., Burnett, W.C. and Chanton, J.P., 1996 a. Application of Rn-222 and CH4 for assessment of groundwater discharge to the coastal ocean, Limnology and Oceanography, v. 41, p. 1347-1353.
  10. -Cable, J.E., Burnett, W.C., Chanton, J.P. and Weatherly, G.L., 1996 b. Estimating groundwater discharge into the northeastern Gulf of Mexico using radon – 222, Earth and Planetary Science Letters, v. 144, p. 591-604.
  11. -Cable, J.E., Burnett, W.C. and Chanton, J.P., 1997. Magnitude and variations of groundwater seepage along a Florida marine shoreline, Biogeochemistry, v. 38, p. 189-205.
  12. -Charette, M.A., Moore, W.S. and Burnett, W.C., 2008. Uranium and thorium series nuclides as Tracers of submarine groundwater discharge, Radioactivity in the Environment, v.13, p. 155-186.
  13. -Corbett, D.R., 1999. Tracing Groundwater Flow into Surface Waters by Application of Natural and Artifical Tracers, Ph.D. Dissertation, Florida State University, 292 p.
  14. -Huettel, M., Ziebis, W. and Forster, S., 1996. Flow-induced uptake of particulate matter in permeable sediments, Limnology and Oceanography, v. 41, p. 309-322.
  15. -Hussain, N., Church, T.M. and Kim, G., 1999. Use of 222Rn and 226Ra to trace groundwater discharge into Chesapeake Bay, Marine Chemistry, v. 65, p. 127-134.
  16. -Japan hydrographic Association: http://www.jha.or.jp/en/jha/
  17. -Japan Meteorological Agency online database:
  18. http://www.data.jma.go.jp/obd/stats/etrn/index.php?prec_no=86&block_no=0846&year= 2012&month=8&day=&view=)
  19. -Japan Water Information System (JWIS) online database:
  20. http://www1.river.go.jp/cgi-bin/SiteInfo.exe?ID=309111289909070
  21. -Kim, G. and Hwang, D.W., 2002. Tidal pumping of groundwater into the coastal ocean revealed from submarine Rn-222 and CH4 monitoring, Geophysical Research Letters, v. 29(14), 1678 p., doi:10.1029/2002GL015093.
  22. -Idea Co. 八代海流動モデルの構築業務, 報告書, 平成23年12月, いであ株式会社
  23. -Kohout, F.A., 1966. Submarine springs: a neglected phenomenon of coastal hydrology, Hydrology, v. 26, p. 391-413.
  24. -Lee, D.R., 1977. A device for measuring seepage flux in lakes and estuaries, Limnology and Oceanography, v. 22, p. 140-147.
  25. -Li, L., Barry, D.A., Stagnitti, F. and Parlange, J.Y., 1999. Submarine groundwater discharge and associated chemical input to a coastal sea, Water Resources Research, v. 35-11, p. 3253-3259.
  26. -Martin, J.B., Cable, J.E., Swarzenski, P.W. and Lindenberg, M.K., 2005. Enhanced submarine ground water discharge from mixing of pore water and estuarine water, Ground Water, v. 42, p. 1000-1010.
  27. -Moore, W.S., 1996. Large groundwater inputs to coastal waters revealed by 226Rn enrichments, Nature, v. 380, p. 612-614.
  28. -Moore, W.S., 1999. The subterranean estuary: a reaction zone of ground water and seawater, Marine Chemistry, v. 20, p. 111-125.
  29. -Moore, W.S., Krest, J., Taylor, G., Roggenstein, E., Joye, S. and Lee, R., 2002. Thermal evidence of water exchange through a coastal aquifer: implications for nutrient fluxes, Geophysical Research Letters, v. 29, 1029/2002GLO14923.
  30. -Moore, W.S. and Shaw, T.J., 1998. Chemical signals from submarine fluid advection onto the continental shelf, Journal of Geophysical Research–Oceans, v. 103, p. 21543-21552.
  31. -Nielsen, P., 1990. Tidal dynamics in the water table in a beach, Water Resources Research, v. 26, p. 2127-2134.
  32. -Nikpeyman, Y., Hosono, T., Ono, M., Yang, H., Shimada, J. and Takikawa, K., 2016. Assessment of the spatial distribution of submarine groundwater discharge (SGD) along the Yatsushiro Inland Sea coastline, SW Japan, using 222Rn method, Journal of Radioanalytical and Nuclear Chemistry, v. 307(93), p. 2123-2132.
  33. -Nikpeyman, Y., Ono, M., Hosono, T., Yang, H., Ichiyanagi, K., Shimada, J. and Takikawa, K., 2014. Distribution patterns of salinity and 222Rn in Yatsushiro Inland Sea, Kyushu, Japan, IAHS Publications, v. 365, p. 49-54.
  34. -Rama, W. and Moore, S., 1996. Using the radium quartet for evaluating groundwater input and water exchange in salt marshes, GCA, v. 60-23, p. 4245-4252.
  35. -Riedl, R., Huang, N. and Machan, R., 1972. The subtidal pump: a mechanism of interstitial water exchange by wave action, Marine Biology, v. 13, p. 210-221.
  36. -Shum, K.T. and Sundby, B., 1996. Organic matter processing in continental shelf sediments–the subtidal pump revisited, Marine Chemistry, v. 53, p. 81-87.
  37. -Taniguchi, M., 2002. Tidal effects on submarine groundwater discharge into the ocean, Geophys Geophysical Research Letters, v. 29, 10.1029/2002GL014987.
  38. -Taniguchi, M., Burnett, W.C., Cable, J.E. and Turner, J.V., 2002. Investigation of submarine groundwater discharge, Hydrological Processes, v. 16, p. 2115-2129.
  39. -Taniguchi, M., Ishitobi, T. and Saeki, K., 2005. Evaluation of time–space distributions of submarine groundwater discharge, Ground Water, v. 43, p. 336-342.
  40. -Taniguchi, M., Ishitobi, T., Shimada, J. and Takamoto, N., 2006a. Evaluation of spatial distribution ofsubmarine groundwater discharge, Geophysical Research Letters, v. 33, L06605, doi:10.1029/2005GL025288.
  41. -Yoshimoto, A., Osanai, Y., Nakano, N., Adachi, T., Yonemura, K. and Ishizuka, H., 2013. U-Pb detritalzircon dating of pelitic schists and quartzite from the Kurosegawa Tectonic Zone, Southwest Japan, Journal of Mineralogical and Petrological Sciences, v. 108-3, p. 184-188.
Researches in Earth Sciences
Volume 8, Issue 3 - Serial Number 31
December 2017
Pages 153-165

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