scholarly journals The role of stable isotopes in understanding rainfall interception processes: a review

2016 ◽  
Vol 4 (1) ◽  
pp. e1187 ◽  
Author(s):  
Scott T. Allen ◽  
Richard F. Keim ◽  
Holly R. Barnard ◽  
Jeffrey J. McDonnell ◽  
J. Renée Brooks
Keyword(s):  
Stable Isotopes ◽  
Rainfall Interception

scholarly journals Isotopic diffusion in polycrystalline ice

2003 ◽  
Vol 49 (166) ◽  
pp. 397-406 ◽  
Author(s):  
Alan W. Rempel ◽  
J. S. Wettlaufer
Keyword(s):  
Stable Isotopes ◽  
Stable Isotope ◽  
Vapor Phase ◽  
High Frequency ◽  
Ice Core ◽  
Accurate Analysis ◽  
Depositional Processes ◽  
Polycrystalline Ice ◽  
End Members

AbstractQuantitative ice-core paleoclimatology must account for post-depositional processes, such as vapor-phase diffusion in the firn. After pore close-off, diffusion continues to smooth the stable-isotope records δ18O and δD that are eventually recovered from the ice, leading to the loss of high-frequency information. Johnsen and others (1997) found much higher rates of diffusive smoothing in the Greenland Icecore Project (GRIP) Holocene ice than would be predicted by diffusion through solid ice alone, and Nye (1998) argued that transport through liquid veins might explain this apparent excess diffusion. However, the analysis of Johnsen and others (2000) indicates that the required vein dimensions may be unrealistically large. Here, we model the diffusion of stable isotopes in polycrystalline ice and show that the predictions of Nye (1998) and those of Johnsen and others (2000) actually represent two end-members in a range of potential behavior. Our model determines which of these asymptotic regimes more closely resembles the prevailing conditions and quantifies the role of pre-melted liquid in the smoothing of isotopic signals. The procedure thereby ties together the two approaches and provides a rostrum for accurate analysis of isotope records and paleotemperature reconstructions.

A perspective on the evolving role of stable isotope analysis and the emergence of cavity enhanced spectroscopy as a potent tool

2021 ◽  
Author(s):  
Sanchi Maithani ◽  
Abhijit Maity ◽  
Manik Pradhan
Keyword(s):  
Stable Isotopes ◽  
Stable Isotope ◽  
Stable Isotope Analysis ◽  
Isotopic Ratio ◽  
Isotope Analysis ◽  
Natural Environments ◽  
Geological Samples ◽  
Vast Array

The investigation of stable isotopes finds applications in a vast array of fields. The measurement of isotopic ratio in natural environments such as oceans, atmosphere and geological samples assists in...

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