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Hydrogen and oxygen isotope composition of precipitation and stream water on sub-Antarctic Marion Island

Hydrogen and oxygen isotope composition of precipitation and stream water on sub-Antarctic Marion... Abstract We measured the hydrogen and oxygen isotope composition (δ2H and δ18O) of precipitation and stream water from the Soft Plume River at multiple spatiotemporal scales on sub-Antarctic Marion Island, Indian sector of the Southern Ocean. Monthly precipitation δ2H and δ18O values ranged from -43.7‰ to -14.7‰ and from -7.0‰ to -3.3‰ (n=13), respectively. Stream water values ranged from -48.0‰ to -25.4‰ for δ2H and from -7.6‰ to -4.0‰ for δ18O (n=92). The monthly precipitation data yielded a local meteoric water line with the equation δ2H=8.4δ18O+11.4. There was no clear seasonality in isotope composition present in precipitation and stream water. Along the stream, no significant difference was observed between sites. However, δ2H and δ18O values were lower and more variable at the highest site. This is probably the result of the ‘amount effect’, where more precipitation fell at a higher elevation compared with a downstream site in the catchment. The findings illustrate spatiotemporal patterns in precipitation and stream water isotopes and provide insight into mechanisms affecting their composition on sub-Antarctic Marion Island. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Antarctic Science Cambridge University Press

Hydrogen and oxygen isotope composition of precipitation and stream water on sub-Antarctic Marion Island

Antarctic Science , Volume 30 (2): 10 – Dec 22, 2017
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Publisher
Cambridge University Press
Copyright
© Antarctic Science Ltd 2017 
ISSN
1365-2079
eISSN
0954-1020
DOI
10.1017/S0954102017000475
Publisher site
See Article on Publisher Site

Abstract

Abstract We measured the hydrogen and oxygen isotope composition (δ2H and δ18O) of precipitation and stream water from the Soft Plume River at multiple spatiotemporal scales on sub-Antarctic Marion Island, Indian sector of the Southern Ocean. Monthly precipitation δ2H and δ18O values ranged from -43.7‰ to -14.7‰ and from -7.0‰ to -3.3‰ (n=13), respectively. Stream water values ranged from -48.0‰ to -25.4‰ for δ2H and from -7.6‰ to -4.0‰ for δ18O (n=92). The monthly precipitation data yielded a local meteoric water line with the equation δ2H=8.4δ18O+11.4. There was no clear seasonality in isotope composition present in precipitation and stream water. Along the stream, no significant difference was observed between sites. However, δ2H and δ18O values were lower and more variable at the highest site. This is probably the result of the ‘amount effect’, where more precipitation fell at a higher elevation compared with a downstream site in the catchment. The findings illustrate spatiotemporal patterns in precipitation and stream water isotopes and provide insight into mechanisms affecting their composition on sub-Antarctic Marion Island.

Journal

Antarctic Science – Cambridge University Press

Published: Dec 22, 2017

Keywords: amount effect; isotope hydrology; local meteoric water line; maritime island

References

  • The altitude effect on the isotopic composition of precipitation and glacier ice in the Alps
  • Can oxygen stable isotopes be used to track precipitation moisture source in vascular plant-dominated peatlands?
  • Statistical relationships between topography and precipitation patterns
  • Reduction of water with zinc for hydrogen isotope analysis
  • Normalization of oxygen and hydrogen isotope data
  • Isotopic variations in meteoric waters
  • Alternative least squares methods for determining the meteoric water line, demonstrated using GNIP data
  • Stable isotopes in precipitation
  • Interpretation of homogeneity in δ18O signatures of stream water in a nested sub‐catchment system in north‐east Scotland
  • Spatial distribution and seasonal variation in 18O/16O of modern precipitation and river water across the conterminous USA
  • Spatial variability in the isotopic composition of rainfall in a small headwater catchment and its effect on hydrograph separation
  • The lentic and lotic freshwater types of Marion Island (sub-Antarctic): a limnological study
  • The Global Network of Isotopes in Rivers (GNIR): integration of water isotopes in watershed observation and riverine research
  • O- and H-isotope record of Cape Town rainfall from 1996 to 2008, and its application to recharge studies of Table Mountain groundwater, South Africa
  • Spatial inventory of landforms in the recently exposed central highland of sub-Antarctic Marion Island
  • A new precipitation weighted method for determining the meteoric water line for hydrological applications demonstrated using Australian and global GNIP data
  • Assessing recent trends in high-latitude Southern Hemisphere surface climate
  • Distribution of oxygen‐18 and deuterium in river waters across the United States
  • Oxygen isotope values of precipitation and surface waters in northern Central America (Belize and Guatemala) are dominated by temperature and amount effects
  • Petrology and geochemistry of Marion and Prince Edward islands, Southern Ocean: magma chamber processes and source region characteristics
  • Changes in climate extremes, variability and signature on sub-Antarctic Marion Island
  • Geochemistry of streams from Byers Peninsula, Livingston Island
  • Precipitation induced stream flow: an event based chemical and isotopic study of a small stream in the Great Plains region of the USA
  • Temperature changes in the mid‐ and high‐latitudes of the Southern Hemisphere
  • Preparation of organic and water hydrogen for stable isotope analysis – effects due to reaction vessels and zinc reagent
  • The nature and importance of the sub-Antarctic
  • Extraction technique for the determination of oxygen-18 in water using preevacuated glass vials
  • The stable hydrogen and oxygen isotope variation of water stored in polyethylene terephthalate (PET) bottles
  • Annular modes in the extratropical circulation. Part I: Month-to-month variability
  • Synoptic-scale climate patterns associated with rainfall δ18O in southern Australia
  • Spatial analysis of hydrogen and oxygen stable isotopes (“isoscapes”) in ground water and tap water across South Africa