Ice core chemistry, conductivity, and stable nitrate isotopic composition of the Samalas eruption in 1259 from the ISOL-ICE ice core, Dronning Maud Land, Antarctica

This dataset contains a subset of the ice core data for the ISOL-ICE core recovered from Dronning Maud Land, Antarctica in January 2017 ( https://doi.org/10.5285/9c972cfb-0ffa-4144-a943-da6eb82431d2). The subset reported here contains ice core data from the 1455 - 1227 AD period (60.80 - 79.45 m depth) and covers the volcanic eruption of Samalas, Indonesia in 1259. The ice core was dated by annual layer counting and identifying volcanic horizons as fixed time markers. Here we report i) the age-depth model over the 1455 - 1227 AD period, ii) high-resolution nitrate stable isotopic composition of discrete ice core samples, and iii) nitrate, sodium and magnesium mass concentrations and electrolytic meltwater conductivity from continuous flow analysis (CFA).





Funding was provided by the NERC grant NE/N011813/1.

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Date (Creation)
2019-07-25
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2019-07-25
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2019-07-25
Date (released)
2019-07-25
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1.0
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https://doi.org/10.5285/d9a74ea7-2a1a-4068-847e-5bc9f51947c5
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GB/NERC/BAS/PDC/01199
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https://data.bas.ac.uk/

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Please cite this item as: Winton, V., Caillon, N., Hauge, L., Mulvaney, R., Rix, J., Savarino, J., Tuckwell, R., & Frey, M. (2019). Ice core chemistry, conductivity, and stable nitrate isotopic composition of the Samalas eruption in 1259 from the ISOL-ICE ice core, Dronning Maud Land, Antarctica (Version 1.0) [Data set]. UK Polar Data Centre, Natural Environment Research Council, UK Research & Innovation. https://doi.org/10.5285/d9a74ea7-2a1a-4068-847e-5bc9f51947c5

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British Antarctic Survey, Natural Environment Research Council, UK Research & Innovation Winton, V. Holly Author

Institut des Geosciences de l'Environnement

 		Caillon, Nicolas Author
British Antarctic Survey, Natural Environment Research Council, UK Research & Innovation Hauge, Lisa Author
British Antarctic Survey, Natural Environment Research Council, UK Research & Innovation Mulvaney, Robert Author
British Antarctic Survey, Natural Environment Research Council, UK Research & Innovation Rix, Julius Author

Institut des Geosciences de l'Environnement

 		Savarino, Joel Author
British Antarctic Survey, Natural Environment Research Council, UK Research & Innovation Tuckwell, Rebecca Author
British Antarctic Survey, Natural Environment Research Council, UK Research & Innovation Frey, Markus Author
NERC EDS UK Polar Data Centre

PDCServiceDesk@bas.ac.uk

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Global Change Master Directory (GCMD) Science Keywords
Theme

  • Antarctica

  • Dronning Maud Land

  • ISOL-ICE

  • ice core

  • nitrate concentration

  • nitrate isotope
Place

  • Kohnen Station, Dronning Maud Land Antarctica

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This data is governed by the NERC Data Policy: https://www.ukri.org/who-we-are/nerc/our-policies-and-standards/nerc-data-policy/

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This data is governed by the NERC data policy and supplied under Open Government Licence v.3
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  • Climatology, meteorology, atmosphere
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Begin date
1227-01-01
End date
1455-12-31
Supplemental Information

It is recommended that careful attention be paid to the contents of any data, and that the author be contacted with any questions regarding appropriate use. If you find any errors or omissions, please report them to polardatacentre@bas.ac.uk.

Title

European Petroleum Survey Group (EPSG) Geodetic Parameter Registry
Date (Publication)
2008-11-12
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European Petroleum Survey Group

EPSGadministrator@iogp.org

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urn:ogc:def:crs:EPSG::3031
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6.18.3

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NERC EDS UK Polar Data Centre

PDCServiceDesk@bas.ac.uk

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 		https://ramadda.data.bas.ac.uk/repository/entry/show?entryid=d9a74ea7-2a1a-4068-847e-5bc9f51947c5

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Methodology:

A full description of the methods for the ISOL-ICE ice core can be found in Winton et al. (2019); doi: 10.5285/9c972cfb-0ffa-4144-a943-da6eb82431d2. Briefly, a new 120 m core was recovered from Kohnen Station, located in Dronning Maud Land (DML) on the high-elevation East Antarctic Plateau (2892 m a.s.l) in January 2017. Sections of the core were analysed for i) continuous flow analysis (CFA) of nitrate, sodium and magnesium mass concentrations and electrolytic meltwater conductivity at the British Antarctic Survey (BAS), Cambridge, and ii) discrete sections for the nitrate stable isotopic composition at the Environmental Geosciences (IGE), University of Grenoble-Alpes. Here we report the dated section of the ice core from 1455 - 1227 AD (60.80 - 79.45 m) covering the largest volcanic eruption, Samalas in 1259, over the past 1000-years. Dating was achieved by annual layer counting of measured concentrations of sodium and magnesium following previous studies at DML (Göktas et al., 2002; Weller and Wagenbach, 2007; Weller et al., 2008) constrained by well-dated volcanic eruption horizons. An age uncertainty of +/- 3 years is estimated at the base of the ice core. High-resolution sampling for nitrate isotopic analysis was carried out i) across volcanic horizons with a sample resolution of 5 - 30 cm, and ii) in 10 cm resolution baseline samples 1 m either side of the volcanic peak. A total of 119 discrete measurements of d15N-NO3- are reported here. Discrete nitrate isotope samples were pre-concentrated and analysed using the denitrifier method following Frey et al. (2009);Morin et al. (2009). The nitrogen isotopic ratio was referenced against N2-Air (Mariotti, 1983). We report 15N/14N of NO3- (d15N-NO3-) as d-values following d = (Rsample /Rstandard - 1) * 1000 where R is the elemental isotopic ratio in the sample and standard respectively. The overall accuracy of the method for d15N is 2.9 ppth.

Data collection:

Fast ion chromatography: ICS-3000, Dionex™ with a AS15-5um and AERS500-4mm suppressor.





Isotope ratio mass spectrometer (IRMS) for duel O and N analysis: Thermo Finnigan™ MAT 253 IRMS equipped with a GasBench II™ and coupled to an in-house-built NO3- interface.





Inductively coupled plasma-mass spectrometry: 7700 series, Agilent.





Conductivity: Dionex? conductivity detector.

Data quality:

Major ions: At the beginning, end and during the course of the day, a certified reference material (CRM; ERM-CA408 simulated rainwater standards; Sigma-Aldrich) was measured for quality control and yielded an accuracy of 107 %, and precision of 10 % for nitrate.





Major elements: At the beginning, end and during the course of the day, a certified reference material (CRM; ERM-CA408 simulated rainwater standards; Sigma-Aldrich) was measured for quality control and yielded an accuracy of 94 and 113 %, and precision of 10 and 13 % for sodium and magnesium.





Nitrate stable isotope ratios: Certified reference materials (IAEA USGS-32, USGS-34 and USGS-35; Böhlke et al., 1993; Böhlke et al., 2003) were prepared (matrix match 1 M NaCl solution; ACS grade) and subject to the same analytical procedures as snow and aerosol samples. For each batch of 60 samples, the overall accuracy of the method is estimated as the reduced standard deviation of the residuals from the linear regression between the measured reference materials (n = 16) and their expected values. For the ice core (n = 800), the average uncertainty values obtained for d18O, d17O, D17O and d15N were 2.8 ppth, 2.1 ppth 0.9 ppth and 2.9 ppth respectively.

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d9a74ea7-2a1a-4068-847e-5bc9f51947c5 XML
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dataset
Date stamp
2019-07-25
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ISO 19115:2003(E)
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NERC EDS UK Polar Data Centre

polardatacentre@bas.ac.uk

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Keywords

Antarctica Dronning Maud Land ISOL-ICE ice core nitrate concentration nitrate isotope
GEMET - INSPIRE themes, version 1.0

Atmospheric conditions Geology
Global Change Master Directory (GCMD) Science Keywords

EARTH SCIENCE > Atmosphere > Aerosols EARTH SCIENCE > Paleoclimate > Ice Core Records EARTH SCIENCE > Paleoclimate > Ice Core Records > Isotopes


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