Spatial and temporal variability of snow chemical composition and accumulation rate at Talos Dome site (East Antarctica)

Caiazzo, Laura; Becagli, Silvia; Frosini, Daniele; Giardi, Fabio; Udisti, Roberto

doi:10.1016/j.scitotenv.2016.01.087

Cited by 15 publications

(18 citation statements)

References 52 publications

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“…In addition, 13 samples from the Talos Dome ice core (72°S, 159°E, 2316 m, −41 °C on average; Figure for location) were processed for measurement of 36 Cl concentration. The mean accumulation rate of this core is 8 g cm −2 year −1 water equivalent (Caiazzo et al, ; Stenni et al, ). The core was drilled in 2007 in the framework of the European “TALDICE” project: It is 1,620‐m long and spans more than 150 ka (Bazin et al, ; Veres et al, ).…”

Section: Methodsmentioning

confidence: 99%

A Comparison of ³⁶Cl Nuclear Bomb Inputs Deposited in Snow From Vostok and Talos Dome, Antarctica, Using the ³⁶Cl/Cl⁻ ratio

et al. 2019

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36Cl production in the atmosphere is modulated by the magnetic field intensity of both the Sun and the Earth. The record of 36Cl concentration along with that of 10Be in ice cores may therefore provide information as to their variability. To better understand the 36Cl signal in glaciological archives, we measured its concentration in Talos Dome snow samples (mean accumulation rate of 8 g cm−2 year−1 water equivalent) spanning the 1910 to 1980 CE period with a resolution of one sample every 3 years from 1955 to 1980 C.E., and in Vostok snow samples (mean accumulation rate of 1.96 g cm−2 year−1 water equivalent) spanning the 1949 to 2007 CE period with a 6‐month resolution that had never before been obtained. Marine nuclear bomb tests in the late 1950s produced anthropogenic 36Cl, which was injected into the stratosphere and spread around the globe. In the late 1950s this anthropogenic pulse led to an increase of 36Cl concentration at Talos Dome that was more than 100 times higher than the prebomb and postbomb values. It is noteworthy that the atmosphere of Vostok remains polluted by anthropogenic 36Cl today. This pollution results from gaseous H36Cl mobility at low accumulation sites and implies re‐emission of 36Cl from the snowpack that is not observed at Talos Dome. The 36Cl/Cl− ratio may be used to discriminate the stratospheric anthropogenic 36Cl source from the tropospheric natural 36Cl source, which allows us to discuss the immobile vs. mobile 36Cl in the Vostok snowpack.

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Section: Methodsmentioning

confidence: 99%

A Comparison of ³⁶Cl Nuclear Bomb Inputs Deposited in Snow From Vostok and Talos Dome, Antarctica, Using the ³⁶Cl/Cl⁻ ratio

et al. 2019

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“…Studies of drifting snow in Antarctica using satellite remote sensing (Palm et al, 2011) and regional climate modelling provide evidence for a drifting snow frequency (defined as the fraction of days with drifting snow) of about 15 %-30 % in the UG region. Also, studies from closeby areas such as Patriot Hills (Casassa et al, 1998) and the Ronne-Filchner Ice Shelf (Graf et al, 1988) as well as from DML (Schlosser and Oerter, 2002;Kaczmarska et al, 2004) revealed that wind drift and random sastrugi formation are the main reasons for large spatial and temporal variations in accumulation rates. However, linkages between the different firn core drill sites at UG are speculative, e.g.…”

Section: Potential Noises Influencing Ug Firn Core Recordsmentioning

confidence: 99%

Stable water isotopes and accumulation rates in the Union Glacier region, Ellsworth Mountains, West Antarctica, over the last 35 years

Hoffmann

Fernandoy²,

Meyer

et al. 2020

The Cryosphere

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“…The ion chromatographic analysis allowed obtaining the depth profiles of several trace elements. Two Ion Chromatographs were simultaneously used for the analysis: a Thermo Dionex ICS-1000 for the determination of the cationic content (Li + , Na + , NH [21,22]. The analytical performances of the method and the mean sulphate concentrations in EDC96 and GV7 are reported in Tables S1 and S2.…”

Section: Gv7mentioning

confidence: 99%

Volcanic Fluxes Over the Last Millennium as Recorded in the Gv7 Ice Core (Northern Victoria Land, Antarctica)

et al. 2020

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Major explosive volcanic eruptions may significantly alter the global atmosphere for about 2–3 years. During that period, volcanic products (mainly H2SO4) with high residence time, stored in the stratosphere or, for shorter times, in the troposphere are gradually deposited onto polar ice caps. Antarctic snow may thus record acidic signals providing a history of past volcanic events. The high resolution sulphate concentration profile along a 197 m long ice core drilled at GV7 (Northern Victoria land) was obtained by Ion Chromatography on around 3500 discrete samples. The relatively high accumulation rate (241 ± 13 mm we yr −1) and the 5-cm sampling resolution allowed a preliminary counted age scale. The obtained stratigraphy covers roughly the last millennium and 24 major volcanic eruptions were identified, dated, and tentatively ascribed to a source volcano. The deposition flux of volcanic sulphate was calculated for each signature and the results were compared with data from other Antarctic ice cores at regional and continental scale. Our results show that the regional variability is of the same order of magnitude as the continental one.

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Spatial and temporal variability of snow chemical composition and accumulation rate at Talos Dome site (East Antarctica)

Cited by 15 publications

References 52 publications

A Comparison of ³⁶Cl Nuclear Bomb Inputs Deposited in Snow From Vostok and Talos Dome, Antarctica, Using the ³⁶Cl/Cl⁻ ratio

A Comparison of ³⁶Cl Nuclear Bomb Inputs Deposited in Snow From Vostok and Talos Dome, Antarctica, Using the ³⁶Cl/Cl⁻ ratio

Stable water isotopes and accumulation rates in the Union Glacier region, Ellsworth Mountains, West Antarctica, over the last 35 years

Volcanic Fluxes Over the Last Millennium as Recorded in the Gv7 Ice Core (Northern Victoria Land, Antarctica)

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Spatial and temporal variability of snow chemical composition and accumulation rate at Talos Dome site (East Antarctica)

Cited by 15 publications

References 52 publications

A Comparison of 36Cl Nuclear Bomb Inputs Deposited in Snow From Vostok and Talos Dome, Antarctica, Using the 36Cl/Cl− ratio

A Comparison of 36Cl Nuclear Bomb Inputs Deposited in Snow From Vostok and Talos Dome, Antarctica, Using the 36Cl/Cl− ratio

Stable water isotopes and accumulation rates in the Union Glacier region, Ellsworth Mountains, West Antarctica, over the last 35 years

Volcanic Fluxes Over the Last Millennium as Recorded in the Gv7 Ice Core (Northern Victoria Land, Antarctica)

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A Comparison of ³⁶Cl Nuclear Bomb Inputs Deposited in Snow From Vostok and Talos Dome, Antarctica, Using the ³⁶Cl/Cl⁻ ratio

A Comparison of ³⁶Cl Nuclear Bomb Inputs Deposited in Snow From Vostok and Talos Dome, Antarctica, Using the ³⁶Cl/Cl⁻ ratio