Dating a 109.9 m ice core from Dome A (East Antarctica) with volcanic records and a firn densification model

Chuan-jin, LI; Xiao, Cunde; Hou, Shugui; Ren, Jiawen; Ding, Minghu; Guo, R.T.

doi:10.1007/s11430-012-4393-4

Cited by 8 publications

(5 citation statements)

References 37 publications

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“…During the austral summer of 2004/05, a 109.91 m ice core was drilled to study the preliminary climatic information of Dome A; however, the dating results differed greatly between two research groups. One team suggested a 2840-year history for the top 104.42 m, whereas the other group suggested a 41159150-year history for the entire core (Jiang et al 2012;Li et al 2012). Additionally, many studies have shown that single site measurements may have low local representativeness (e.g., Frezzotti et al 2007;Kameda et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Re-assessment of recent (2008–2013) surface mass balance over Dome Argus, Antarctica

et al. 2016

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At Dome Argus, East Antarctica, the surface mass balance (SMB) from 2008 to 2013 was evaluated using 49 stakes installed across a 30)30 km area. Spatial analysis showed that at least 12 and 20 stakes are needed to obtain reliable estimates of SMB at local scales (a few hundred square metres) and regional scales (tens of square kilometres), respectively. The estimated annual mean SMB was 22.995.9 kg m (2 yr (1 , including a net loss by sublimation of (2.229 0.02 kg m (2 yr (1 and a mass gain by deposition of 1.3790.01 kg m (2 yr (1 . Therefore, ca. 14.3% of precipitation was modified after deposition, which should be considered when interpreting snow or ice core records produced by future drilling projects. The surface snow density and SMB in the western portion of Dome Argus are higher than in other areas, and these differences are likely related to the katabatic wind, which is strengthened by topography in this sector. A new digital elevation model (DEM) of Dome Argus was generated, confirming that both peaks of the dome can be considered as the summit of the East Antarctic Ice Sheet. Findings from this study should be valuable for validating SMB estimates obtained from regional climate models and DEMs established using remote-sensing data.

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Section: Introductionmentioning

confidence: 99%

Re-assessment of recent (2008–2013) surface mass balance over Dome Argus, Antarctica

et al. 2016

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“…In this work, the background signal is evaluated in the total sulfate concentration (SO 4 2− ) and the non‐sea salt sulfate flux (nssSO 4 2− ‐flux; Cole‐Dai et al., 1997). The nssSO 4 2− ‐flux was calculated using Equations and (Wagenbach et al., 1998), using sodium (Na + ) as the reference ion (Castellano et al., 2004; Dixon et al., 2004; Jiang et al., 2012; Li et al., 2012; Osipov et al., 2014; Ren et al., 2010). The analysis of the nssSO 4 2− ‐flux was incorporated because it facilitates the detection of small and moderate volcanic signals (Cole‐Dai et al., 1997; Zhang et al., 2002).…”

Section: Methodsmentioning

confidence: 99%

Evidence of Recent Active Volcanism in the Balleny Islands (Antarctica) From Ice Core Records

et al. 2021

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Volcanism can play a key role in modulating climate; however, a lack of historical records has limited our comprehension of Antarctic volcanism and its role on the cryosphere. Remote sensing can provide insight into active volcanism in Antarctica during the satellite era, although the evidence is often inconclusive. Here, we use independent evidence from ice cores to validate one such potential volcanic eruption from the sub‐Antarctic Balleny Islands in 2001 CE. Multiple ice cores from downwind of the eruption site, record elevated input of sulfate, microparticles, and the presence of tephra, coincident with the eruption. In‐phase deposition of volcanic products confirmed a rapid tropospheric transport of volcanic emissions from a small‐to‐moderate, local eruption during 2001. Air mass trajectories demonstrated some air parcels were transported over the West Antarctic ice sheet from the Balleny Islands to ice core sites at the time of the potential eruption, establishing a route for transport and deposition of volcanic products over the ice sheet. The data presented here validate previous remote sensing observations and confirms a volcanic event in the Balleny Islands during 2001 CE. This newly identified eruption provides a case study of recent Antarctic volcanism.

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“…The DA ice core δ 18 O record has not been previously presented. The 109.91‐m ice core was drilled in 2005 and originally dated by various methods (e.g., volcanic time markers, and Herron and Langway firn densification model) (Jiang et al., 2012; Li et al., 2012). Since the results of the previous studies are inconsistent, new dating is needed for this study.…”

Section: Methodsmentioning

confidence: 99%

The Long‐Term Cooling Trend in East Antarctic Plateau Over the Past 2000 Years Is Only Robust Between 550 and 1550 CE

Hou

Jiang

et al. 2021

Geophysical Research Letters

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The uncertainties in Antarctic climate reconstructions due to scarcity of proxy records have restricted the understanding of mechanisms of climate change, and further hindered the improvement of climate models. Here, we provide a new climate record derived from water stable isotopes in a Dome A, East Antarctica ice core. Together with six other ice core records, the Dome A record is used to investigate temperature changes in East Antarctic Plateau (EAP) during period 1–1900 CE. Our results show that, a previously reported long‐term cooling trend in EAP during the recent (pre‐1900 CE) 1900 years is only robust between 550 and 1550 CE. A combination of solar and volcanic forcing may have induced the EAP centennial‐scale cold events, and further caused the long‐term cooling trend from 550 to 1550 CE with a small contribution from orbital forcing.

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Dating a 109.9 m ice core from Dome A (East Antarctica) with volcanic records and a firn densification model

Cited by 8 publications

References 37 publications

Re-assessment of recent (2008–2013) surface mass balance over Dome Argus, Antarctica

Re-assessment of recent (2008–2013) surface mass balance over Dome Argus, Antarctica

Evidence of Recent Active Volcanism in the Balleny Islands (Antarctica) From Ice Core Records

The Long‐Term Cooling Trend in East Antarctic Plateau Over the Past 2000 Years Is Only Robust Between 550 and 1550 CE

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