KOPRI Repository

Isotopic variations of meltwater from ice by isotopic exchange between liquid water and ice

Cited 3 time in wos
Cited 3 time in scopus
Metadata Downloads

Full metadata record

DC Field Value Language
dc.contributor.authorHam, Ji-Young-
dc.contributor.authorHur, Soon Do-
dc.contributor.authorLee, Won Sang-
dc.contributor.authorHan, Yeongcheol-
dc.contributor.authorJung, Hyejung-
dc.contributor.authorLee, Jeonghoon-
dc.description.abstractPredicting the isotopic modification of ice by melting processes is important for improving the accuracy in paleoclimate reconstruction. To this end, we present results from cold room laboratory observations of changes in the isotopic ratio (D/H and O-18/O-16) of ice cubes by isotopic exchange between liquid water and ice in nearly isothermal conditions. A 1-D model was fit to the isotopic results by adjusting the values of two parameters, the isotopic exchange rate constant (k(r)) and the fraction of ice participating in the exchange (f). We found that the rate constant for hydrogen isotopic exchange between liquid water and ice may be greater (up to 40%) than that for the oxygen isotopic exchange. The range of the rate constant obtained from four melt experiments is from 0.21 to 0.82 h(-1). The model results also suggest that f decreases with the increasing wetness of the ice. This is because with increasing water saturation in ice, water may be present only in the small pores or some of the water that was exchanged with ice may be bypassed, decreasing the effective surface area over which the isotopic exchange can occur. The relationship between the two water isotopes (delta O-18 vs delta D) was observed and modeled and the slope was <8, which is significantly different from the slope of the meteoric waterline. We note that these slopes were obtained without considering the sublimation process.en_US
dc.subjectPhysical Geographyen_US
dc.subject.classificationJang Bogo Stationen_US
dc.titleIsotopic variations of meltwater from ice by isotopic exchange between liquid water and iceen_US
dc.title.alternative얼음과 융해수의 동위원소교환반응 연구en_US
dc.identifier.bibliographicCitationHam, Ji-Young, et al. 2019-12. "Isotopic variations of meltwater from ice by isotopic exchange between liquid water and ice". <em>JOURNAL OF GLACIOLOGY</em>, 65(254): 1035-1043.-
dc.citation.titleJOURNAL OF GLACIOLOGYen_US
dc.description.jcrRateJCR 2017:22.105en_US
dc.subject.keywordice chemistryen_US
dc.subject.keywordice coreen_US
dc.subject.keywordmeltwater chemistryen_US
Appears in Collections  
2019-2020, Land-Ice/Ocean Network Exploration with Semiautonomous Systems: Thwaites Glacier (LIONESS/TG) - Toward understanding the fate of the Thwaites Glacier by abrupt collapse and its impact on global sea level changes - (19-20) / Lee, Won Sang (PM19020)
2019-2019, Reconstruction of past climate and environmental changes using high resolution ice core records in Victoria Land, Antarctica (19-19) / Hur, Soon Do (PE19040)
Files in This Item

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.