DOI: 10.1016/j.quascirev.2015.06.030
Scopus记录号: 2-s2.0-84949681083
论文题名: Evaporation induced 18O and 13C enrichment in lake systems: A global perspective on hydrologic balance effects
作者: Horton T.W. ; Defliese W.F. ; Tripati A.K. ; Oze C.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2016
卷: 131 起始页码: 365
结束页码: 379
语种: 英语
英文关键词: Carbon isotopes
; Carbonate
; Climate change
; Clumped isotopes
; Evaporation
; Hydroclimate
; Hydrologic balance
; Hydrology
; Isotope hydrology
; Lacustrine
; Lakes
; Oxygen isotopes
; Paleoclimate
; Paleoelevation
; Paleohydrology
; Paleothermometry
; Sierra Nevada
; Southern Alps New Zealand
; Stable isotopes
; Western U.S.
Scopus关键词: Carbonates
; Carbonation
; Climate change
; Evaporation
; Forestry
; Hydrology
; Lakes
; Oxygen
; Water conservation
; Water resources
; Carbon isotopes
; Clumped isotopes
; Hydroclimate
; Hydrologic balance
; Lacustrine
; New zealand
; Oxygen isotopes
; Paleo-hydrology
; Paleoclimates
; Paleoelevation
; Paleothermometry
; Sierra Nevada
; Stable isotopes
; Western U.S
; Isotopes
; carbon isotope
; carbonate
; climate change
; evaporation
; lacustrine environment
; lake water
; oxygen isotope
; paleoclimate
; paleohydrology
; stable isotope
; Alps
; California
; New Zealand
; Sierra Nevada [California]
; United States
英文摘要: Growing pressure on sustainable water resource allocation in the context of global development and rapid environmental change demands rigorous knowledge of how regional water cycles change through time. One of the most attractive and widely utilized approaches for gaining this knowledge is the analysis of lake carbonate stable isotopic compositions. However, endogenic carbonate archives are sensitive to a variety of natural processes and conditions leaving isotopic datasets largely underdetermined. As a consequence, isotopic researchers are often required to assume values for multiple parameters, including temperature of carbonate formation or lake water δ18O, in order to interpret changes in hydrologic conditions. Here, we review and analyze a global compilation of 57 lacustrine dual carbon and oxygen stable isotope records with a topical focus on the effects of shifting hydrologic balance on endogenic carbonate isotopic compositions. Through integration of multiple large datasets we show that lake carbonate δ18O values and the lake waters from which they are derived are often shifted by >+10‰ relative to source waters discharging into the lake. The global pattern of δ18O and δ13C covariation observed in >70% of the records studied and in several evaporation experiments demonstrates that isotopic fractionations associated with lake water evaporation cause the heavy carbon and oxygen isotope enrichments observed in most lakes and lake carbonate records. Modeled endogenic calcite compositions in isotopic equilibrium with lake source waters further demonstrate that evaporation effects can be extreme even in lake records where δ18O and δ13C covariation is absent. Aridisol pedogenic carbonates show similar isotopic responses to evaporation, and the relevance of evaporative modification to paleoclimatic and paleotopographic research using endogenic carbonate proxies are discussed. Recent advances in stable isotope research techniques present unprecedented opportunities to overcome the underdetermined nature of stable isotopic data through integration of multiple isotopic proxies, including dual element 13C-excess values and clumped isotope temperature estimates. We demonstrate the utility of applying these multi-proxy approaches to the interpretation of paleohydroclimatic conditions in ancient lake systems. Understanding past, present, and future hydroclimatic systems is a global imperative. Significant progress should be expected as these modern research techniques become more widely applied and integrated with traditional stable isotopic proxies. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/59718
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Geological Sciences, University of Canterbury, Private Bag 4800, Christchurch, New Zealand; Department of Earth, Planetary, and Space Sciences, University of California, Los Angeles, 595 Charles Young Drive, Box 951567, Los Angeles, CA, United States; Department of Atmospheric and Oceanic Sciences, Institute of the Environment and Sustainability, University of California, Los Angeles, 595 Charles Young Drive, Box 951567, Los Angeles, CA, United States
Recommended Citation:
Horton T.W.,Defliese W.F.,Tripati A.K.,et al. Evaporation induced 18O and 13C enrichment in lake systems: A global perspective on hydrologic balance effects[J]. Quaternary Science Reviews,2016-01-01,131