Continuous shipboard measurements of oceanic δ18O, δD and δ13CDIC along a transect from New Zealand to Antarctica using cavity ring-down isotope spectrometry

Bass, Adrian M.; Munksgaard, Niels C.; O’Grady, Damien; Williams, Michael; Bostock, Helen C.; Rintoul, Stephen R.; Bird, Michael I.

doi:10.1016/j.jmarsys.2014.04.003

Cited by 17 publications

(41 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Determining the extent to which source water O and C isotopic compositions are modified by evaporation can now be determined with relative ease. Triple-oxygen isotope analysis of water, an excellent indicator of evaporation effects , is becoming more common as researchers begin utilizing current generation off-axis integrated cavity output spectrometers (Berman et al, 2013) and high sensitivity isotope ratio mass spectrometers (Barkan and Luz, 2005), and d 13 C-DIC analyses are similarly more accessible to the geochemical research community (e.g. Bass et al (2014)).…”

Section: From Source To Sink: O and C Isotopes In Quaternary Lake Sysmentioning

confidence: 99%

Evaporation induced 18O and 13C enrichment in lake systems: A global perspective on hydrologic balance effects

Horton

Defliese

Tripati

et al. 2016

Quaternary Science Reviews

141

View full text Add to dashboard Cite

a b s t r a c tGrowing 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 d 18 O, 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 d 18 O values and the lake waters from which they are derived are often shifted by >þ10‰ relative to source waters discharging into the lake. The global pattern of d 18 O and d 13 C 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 d 18 O and d 13 C 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 13 C-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.

show abstract

Section: From Source To Sink: O and C Isotopes In Quaternary Lake Sysmentioning

confidence: 99%

Evaporation induced 18O and 13C enrichment in lake systems: A global perspective on hydrologic balance effects

Horton

Defliese

Tripati

et al. 2016

Quaternary Science Reviews

141

View full text Add to dashboard Cite

show abstract

“…A similar error is introduced to the δ 13 C spiked_sample , or R spiked_sample carbon , of the samples following the CRM run. In eq 3, the error in R spiked_sample carbon is mostly offset by that in [DI 13 (Figure 2b, red line).…”

Section: Environmental Science and Technologymentioning

confidence: 99%

“…Between each spike refill, three CRMs were run at ∼8 h interval for 20 min to determine the [DI 13 C] spike . Overall, the system requires little maintenance, except for routine replacement of the hose filter (every 24 h) and refill of the bags that store the spike (every 16 days) and the phosphoric acid (every 7 days).…”

Section: Environmental Science and Technologymentioning

confidence: 99%

“…Difference between δ 13 C spiked_sample and the true value introduces an error to the [DI 13 C] spike calculated from a CRM run eq (2). A similar error is introduced to the δ 13 C spiked_sample , or R spiked_sample carbon , of the samples following the CRM run.…”

Section: Environmental Science and Technologymentioning

confidence: 99%

“…where R NaH 13 CO 3 is 12 C/ 13 C of the NaHCO 3 used to make the spike, and [DI 12 [DI 13 C] of the spike solution (derived from eq 2) R sample water and δD sample the D/H and the δD of water in samples (estimated from the local salinity vs δD relationship.) R spiked_sample water and δD spiked_sample the D/H and the δD of water in the spike-sample mixture (measured using a water isotope CRDS analyzer) δD spike the δD of of the spike (determined from the recipe of the spike) R NaH 13 CO3 the 12 C/ 13 C of the NaH 13 CO 3 crystal used to make the spike (product specification of 98 atom % 13 C) [DI 12 C] DI_water [DI 12 C] of the deionized water used to make the spike (measured) X spike the mass fraction of water in the spike (calculated from the recipe of the spike) X sample the mass fraction of water in the sample (calculated from the measured salinity) M spike the molar mass of water in the spike (calculated from the recipe of the spike) M sample the molar mass of water in the sample (derived from the estimated δD sample ) a The texts in the bold brackets indicate how the terms are determined.…”

Section: ■ Introductionmentioning

confidence: 99%

See 2 more Smart Citations

An Ultrahigh Precision, High-Frequency Dissolved Inorganic Carbon Analyzer Based on Dual Isotope Dilution and Cavity Ring-Down Spectroscopy

Huang

Cassar

Jönsson

et al. 2015

Environ. Sci. Technol.

View full text Add to dashboard Cite

We present a novel method for continuous and automated shipboard measurements of dissolved inorganic carbon concentration ([DIC]) in surface water. The method is based on dual isotope dilution and cavity ring-down spectroscopy (DID-CRDS). In this method, seawater is continuously sampled and mixed with a flow of NaH(13)CO3 solution that is also enriched in deuterated water (the spike). The isotopic composition of CO2 (δ(13)C(spiked_sample)) derived from the DIC in the mixture, and the D/H ratio of the mixed water (δD(spiked_sample)), are measured by CRDS analyzers. The D/H of the water in the mixture allows accurate estimates of the mixing ratio of the sample and the spike. [DIC] of the sample is then calculated from the mixing ratio, [DI(13)C] of the spike, and δ(13)C(spiked_sample). In the laboratory, the precision of the method is <0.02% (±0.4 μmol kg(-1) when [DIC] = 2000 μmol kg(-1)). A shipboard test was conducted in the Delaware Bay and Estuary. For 2 min average [DIC], a precision of <0.03% was achieved. Measurements from the DID-CRDS showed good agreement with independent measurements of discrete samples using the well-established coulometric method (mean difference = -1.14 ± 1.68 μmol kg(-1)), and the nondispersive infrared(NDIR)-based methods (mean difference = -0.9 ± 4.73 μmol kg(-1)).

show abstract

Continuous monitoring of stream δ¹⁸O and δ²H and stormflow hydrograph separation using laser spectrometry in an agricultural catchment

Tweed

Munksgaard

Marc

et al. 2015

Hydrological Processes

Self Cite

View full text Add to dashboard Cite

A portable Wavelength Scanned-Cavity Ring-Down Spectrometer (Picarro L2120) fitted with a diffusion sampler (DS-CRDS) was used for the first time to continuously measure δ 2 H data during a storm event are highlighted from this study. First, they enabled us to separate components of the hydrograph, which was not possible using high temporal resolution electrical conductivity data that represented changes in solute transfers during the storm event rather than physical hydrological processes. The results from the hydrograph separation confirm fast groundwater contribution to the stream, with the first 5 h of increases in stream discharge comprising over 70% pre-event water. Second, the high temporal resolution stream δ 18 O and δ 2 H data allowed us to detect a short-lived reversal in stream isotopic values (δ 18 O increase by 0.4‰ over 9 min), which was observed immediately after the heavy rainfall period. Third, δ18 O values were used to calculate a time lag of 20 min between the physical and chemical stream responses during the storm event. Finally, the hydrograph separation highlights the role of event waters in the runoff transfers of herbicides and nutrients from this heavily cultivated catchment to the Great Barrier Reef.

show abstract

Continuous shipboard measurements of oceanic δ18O, δD and δ13CDIC along a transect from New Zealand to Antarctica using cavity ring-down isotope spectrometry

Cited by 17 publications

References 28 publications

Evaporation induced 18O and 13C enrichment in lake systems: A global perspective on hydrologic balance effects

Evaporation induced 18O and 13C enrichment in lake systems: A global perspective on hydrologic balance effects

An Ultrahigh Precision, High-Frequency Dissolved Inorganic Carbon Analyzer Based on Dual Isotope Dilution and Cavity Ring-Down Spectroscopy

Continuous monitoring of stream δ¹⁸O and δ²H and stormflow hydrograph separation using laser spectrometry in an agricultural catchment

Contact Info

Product

Resources

About

Continuous shipboard measurements of oceanic δ18O, δD and δ13CDIC along a transect from New Zealand to Antarctica using cavity ring-down isotope spectrometry

Cited by 17 publications

References 28 publications

Evaporation induced 18O and 13C enrichment in lake systems: A global perspective on hydrologic balance effects

Evaporation induced 18O and 13C enrichment in lake systems: A global perspective on hydrologic balance effects

An Ultrahigh Precision, High-Frequency Dissolved Inorganic Carbon Analyzer Based on Dual Isotope Dilution and Cavity Ring-Down Spectroscopy

Continuous monitoring of stream δ18O and δ2H and stormflow hydrograph separation using laser spectrometry in an agricultural catchment

Contact Info

Product

Resources

About

Continuous monitoring of stream δ¹⁸O and δ²H and stormflow hydrograph separation using laser spectrometry in an agricultural catchment