Transformation of ENSO-related rainwater to dripwater δ18O variability by vadose water mixing

被引:51
|
作者
Moerman, Jessica W. [1 ]
Cobb, Kim M. [1 ]
Partin, Judson W. [2 ]
Meckler, A. Nele [3 ]
Carolin, Stacy A. [4 ]
Adkins, Jess F. [5 ]
Lejau, Syria [6 ]
Malang, Jenny [6 ]
Clark, Brian [6 ]
Tuen, Andrew A. [7 ]
机构
[1] Georgia Inst Technol, Sch Earth & Atmospher Sci, Atlanta, GA 30332 USA
[2] Univ Texas Austin, Inst Geophys, Jackson Sch Geosci, Austin, TX USA
[3] ETH, Inst Geol, CH-8092 Zurich, Switzerland
[4] Univ Oxford, Dept Earth Sci, Oxford OX1 3PR, England
[5] CALTECH, Div Geol & Planetary Sci, Pasadena, CA 91125 USA
[6] GunungMulu Natl Pk, Sarawak, Malaysia
[7] Univ Malaysia Sarawak, Inst Biodivers & Environm Conservat, Sarawak, Malaysia
基金
美国国家科学基金会;
关键词
water isotopes; cave dripwater; karst hydrology; forward modeling; LAST GLACIAL PERIOD; MULU NATIONAL-PARK; STABLE-ISOTOPE; SPELEOTHEM DELTA-O-18; SUBTROPICAL BRAZIL; LATE PLEISTOCENE; NORTHERN BORNEO; OXYGEN ISOTOPES; WEST PACIFIC; ICE-AGE;
D O I
10.1002/2014GL061696
中图分类号
P [天文学、地球科学];
学科分类号
07 ;
摘要
Speleothem oxygen isotopes (O-18) are often used to reconstruct past rainfall O-18 variability, and thereby hydroclimate changes, in many regions of the world. However, poor constraints on the karst hydrological processes that transform rainfall signals into cave dripwater add significant uncertainty to interpretations of speleothem-based reconstructions. Here we present several 6.5 year, biweekly dripwater O-18 time series from northern Borneo and compare them to local rainfall O-18 variability. We demonstrate that vadose water mixing is the primary rainfall-to-dripwater transformation process at our site, where dripwater O-18 reflects amount-weighted rainfall O-18 integrated over the previous 3-10 months. We document large interannual dripwater O-18 variability related to the El Nino-Southern Oscillation (ENSO), with amplitudes inversely correlated to dripwater residence times. According to a simple stalagmite forward model, asymmetrical ENSO extremes produce significant offsets in stalagmite O-18 time series given different dripwater residence times. Our study highlights the utility of generating multiyear, paired time series of rainfall and dripwater O-18 to aid interpretations of stalagmite O-18 reconstructions.
引用
收藏
页码:7907 / 7915
页数:9
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共 35 条
  • [1] δ18O in the Tropical Conifer Agathis robusta Records ENSO-Related Precipitation Variations
    Boysen, Bjorn M. M.
    Evans, Michael N.
    Baker, Patrick J.
    [J]. PLOS ONE, 2014, 9 (07):
  • [2] Assessing proxy system models of cave dripwater δ18O variability
    Hu, Jun
    Dee, Sylvia G.
    Wong, Corinne, I
    Harman, Ciaran J.
    Banner, Jay L.
    Bunnell, Kendra E.
    [J]. QUATERNARY SCIENCE REVIEWS, 2021, 254
  • [3] Identifying ENSO-related interannual and decadal variability on terrestrial water storage
    Se-Hyeon Cheon
    Benjamin D. Hamlington
    John T. Reager
    Hrishikesh A. Chandanpurkar
    [J]. Scientific Reports, 11
  • [4] Identifying ENSO-related interannual and decadal variability on terrestrial water storage
    Cheon, Se-Hyeon
    Hamlington, Benjamin D.
    Reager, John T.
    Chandanpurkar, Hrishikesh A.
    [J]. SCIENTIFIC REPORTS, 2021, 11 (01)
  • [5] δ18O as a tracer of the main regularities of water mass mixing and transformation in the Barents, Kara, and Laptev seas
    Namyatov, Alexey A.
    [J]. JOURNAL OF HYDROLOGY, 2021, 593
  • [6] Tree-ring δ18O from Southeast China reveals monsoon precipitation and ENSO variability
    Shi, Shiyuan
    Shi, Jiangfeng
    Xu, Chenxi
    Leavitt, Steven W.
    Wright, William E.
    Cai, Zhongyin
    Zhang, Hongyan
    Sun, Xuguang
    Zhao, Yesi
    Ma, Xiaoqi
    Zhang, Weijie
    Lu, Huayu
    [J]. PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY, 2020, 558
  • [7] A 300-year Vietnam hydroclimate and ENSO variability record reconstructed from tree ring δ18O
    Sano, Masaki
    Xu, Chenxi
    Nakatsuka, Takeshi
    [J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES, 2012, 117
  • [8] ENSO variability around 2000 years ago recorded by Tridacna gigas δ18O from the South China Sea
    Yan, Hong
    Liu, Chengcheng
    Zhang, Wenchao
    Li, Ming
    Zheng, Xufeng
    Wei, Gangjian
    Xie, Louhua
    Deng, Wenfeng
    Sun, Liguang
    [J]. QUATERNARY INTERNATIONAL, 2017, 452 : 148 - 154
  • [9] A Synoptic Scale Perspective on Greenland Ice Core δ18O Variability and Related Teleconnection Patterns
    Rimbu, Norel
    Ionita, Monica
    Lohmann, Gerrit
    [J]. ATMOSPHERE, 2021, 12 (03)
  • [10] A coral δ18O record of ENSO driven sea surface salinity variability in Fiji (south-western tropical Pacific)
    Le Bec, N
    Juillet-Leclerc, A
    Corrège, T
    Blamart, D
    Delcroix, T
    [J]. GEOPHYSICAL RESEARCH LETTERS, 2000, 27 (23) : 3897 - 3900