The impact of glacier retreat from the Ross Sea on local climate: Characterization of mineral dust in the Taylor Dome ice core, East Antarctica

Aarons, Sarah M.; Aciego, S.; Gabrielli, Paolo; Delmonte, Barbara; Koornneef, Janne M.; Wegner, Anna; Blakowski, Molly A.

doi:10.1016/j.epsl.2016.03.035

Cited by 29 publications

(33 citation statements)

References 63 publications

(102 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…However, it is consistent with the Taylor Dome record, which also has an anomalously thin LGM layer because of low accumulation rates (Steig et al, 2000;Morse et al, 2007). Hyper-arid conditions in the Taylor Dome region were probably the result of a change in the trajectory of moisture bearing storms and increased distance to open water, because of the advance of the Ross ice shelf far into the Ross sea Aarons et al, 2016).…”

Section: Along-flow Profile Covers Entire Glacial Cyclesupporting

confidence: 68%

Atmospheric gas records from Taylor Glacier, Antarctica, reveal ancient ice with ages spanning the entire last glacial cycle

et al. 2017

View full text Add to dashboard Cite

Abstract.Old ice for paleo-environmental studies, traditionally accessed through deep core drilling on domes and ridges on the large ice sheets, can also be retrieved at the surface from ice sheet margins and blue ice areas. The practically unlimited amount of ice available at these sites satisfies a need in the community for studies of trace components requiring large sample volumes. For margin sites to be useful as ancient ice archives, the ice stratigraphy needs to be understood and age models need to be established. We present measurements of trapped gases in ice from Taylor Glacier, Antarctica, to date the ice and assess the completeness of the stratigraphic section. Using δ 18 O of O 2 and methane concentrations, we unambiguously identify ice from the last glacial cycle, covering every climate interval from the early Holocene to the penultimate interglacial. A high-resolution transect reveals the last deglaciation and the Last Glacial Maximum (LGM) in detail. We observe large-scale deformation in the form of folding, but individual stratigraphic layers do not appear to have undergone irregular thinning. Rather, it appears that the entire LGM-deglaciation sequence has been transported from the interior of the ice sheet to the surface of Taylor Glacier relatively undisturbed. We present an age model that builds the foundation for gas studies on Taylor Glacier. A comparison with the Taylor Dome ice core confirms that the section we studied on Taylor Glacier is better suited for paleo-climate reconstructions of the LGM due to higher accumulation rates.

show abstract

Section: Along-flow Profile Covers Entire Glacial Cyclesupporting

confidence: 68%

Atmospheric gas records from Taylor Glacier, Antarctica, reveal ancient ice with ages spanning the entire last glacial cycle

et al. 2017

View full text Add to dashboard Cite

show abstract

“…During glacial periods, increased extension of sea ice in the Southern Ocean shifts the Westerlies northward resulting in stronger glacial and fluvial erosion, and a colder and drier climate in the dust source region (Petit et al, 1999). Because a volcanic signature was not found in the Taylor Glacier or the Taylor Dome records (Aarons et al, 2016(Aarons et al, , 2017 during Termination I, despite locally active volcanism (Narcisi et al, 2012), an additional atmospheric and/or environmental change in this region is likely. Dust transported to the Taylor Glacier during the current interglacial (MIS 1) is a mixture of background SSA input, local late Cretaceous Victoria Land material, and possibly Australian dust (Aarons et al, 2017;Albani, Mahowald, et al, 2012;Li et al, 2008).…”

Section: Change In Wind Trajectorymentioning

confidence: 99%

“…In this study, we analyze, compare, and contrast several new dust archive climate proxies from the Taylor Glacier to evaluate the dust cycle response to deglaciation. Radiogenic isotopes of strontium (Sr) and neodymium (Nd) are used to trace the source of dust deposited on the Taylor Glacier following previously established methods (Aarons et al, 2016;Basile et al, 1997;Grousset & Biscaye, 2005;Grousset et al, 1992). We find a significant difference in dust composition in the MIS 5e record compared to MIS 1, signifying a young volcanic input similar in geochemical composition to the West Antarctic Rift System (WARS).…”

Section: Introductionmentioning

confidence: 97%

“…Radiogenic isotopes of strontium (Sr) and neodymium (Nd) are used to trace the source of dust deposited on the Taylor Glacier following previously established methods (Aarons et al, 2016;Basile et al, 1997;Grousset & Biscaye, 2005;Grousset et al, 1992). Radiogenic isotopes of strontium (Sr) and neodymium (Nd) are used to trace the source of dust deposited on the Taylor Glacier following previously established methods (Aarons et al, 2016;Basile et al, 1997;Grousset & Biscaye, 2005;Grousset et al, 1992).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Dust Transport to the Taylor Glacier, Antarctica, During the Last Interglacial

Aarons

Aciego

McConnell

et al. 2019

Geophysical Research Letters

Self Cite

View full text Add to dashboard Cite

Changes in the composition of dust trapped in ice provide evidence of past atmospheric circulation and earth surface conditions. Investigations of dust provenance in Antarctic ice during glacial and interglacial periods indicate that South America is the primary dust source during both climate regimes. Here, we present results from a new ice core dust archive extracted from the Taylor Glacier in coastal East Antarctica during the deglacial transition from Marine Isotope Stage 6 to 5e. Radiogenic strontium and neodymium isotopes indicate that last interglacial dust is young and volcanic, in contrast to the observed preindustrial and Holocene (Marine Isotope Stage 1) dust composition. The dust composition differences from the last interglacial and current interglacial period at the site require a profound difference in atmospheric transport and environmental conditions. We consider several potential causes for enhanced transport of volcanic material to the site, including increased availability of volcanic material and large‐scale atmospheric circulation changes.

show abstract

“…Despite these difficulties, clay mineralogy (Gaudichet et al, 1992), Sr-Nd isotopes (Revel-Rolland et al, 2006), and atmospheric models (Albani, Mahowald, et al, 2012) suggest that Australia could be an important source for dust deposited in inner EAIS during interglacials. During interglacials the connection is weaker, allowing regional dynamics to gain importance and become detectable (Aarons et al, 2016;Bory et al, 2010). The picture is even poorer considering the west Antarctic ice sheet, where preliminary observations, mainly from models, point to a composite origin during the Holocene (Koffman et al, 2014;Mahowald et al, 2010Mahowald et al, , 2011McConnell et al, 2007;Neff & Bertler, 2015).…”

Section: Introductionmentioning

confidence: 99%

Regionalization of the Atmospheric Dust Cycle on the Periphery of the East Antarctic Ice Sheet Since the Last Glacial Maximum

Baccolo

Delmonte

Albani

et al. 2018

Geochem Geophys Geosyst

Self Cite

View full text Add to dashboard Cite

Ice cores from inner East Antarctica provided some of the longest and most detailed climatic reconstructions and allowed understanding the relationships between atmospheric mineral dust and climate. In this work we present synchrotron radiation X‐ray Fluorescence geochemical data of dust from the TALDICE ice core drilled at Talos Dome, a peripheral ice dome of East Antarctica (Western Ross Sea). Results highlight a dominant southern South American origin for dust at TALDICE during the Last Glacial Maximum, similarly to other sites located further inland onto the polar plateau. On the contrary, a different scenario concerns Talos Dome during the Holocene if it is compared to more inner sites. The tight connection between high southern latitudes and Antarctica that characterizes cold climate stages becomes weaker since the onset of the last climatic transition and throughout the Holocene. The net effect of this process at Talos Dome is a modification of the atmospheric and environmental settings, owing to local Antarctic sources of Victoria Land to gain importance and become the dominant ones. At the same time in inner East Antarctica the provenance of dust remains remote also during Holocene, revealing an evolution of the homogeneous scenario observed in glacial periods. The enhanced sensitivity of peripheral ice sheet sites to local dust sources makes Talos Dome an ideal site to assess the climatic and atmospheric changes of the peripheral sectors of East Antarctica during the current interglacial period.

show abstract

The impact of glacier retreat from the Ross Sea on local climate: Characterization of mineral dust in the Taylor Dome ice core, East Antarctica

Cited by 29 publications

References 63 publications

Atmospheric gas records from Taylor Glacier, Antarctica, reveal ancient ice with ages spanning the entire last glacial cycle

Atmospheric gas records from Taylor Glacier, Antarctica, reveal ancient ice with ages spanning the entire last glacial cycle

Dust Transport to the Taylor Glacier, Antarctica, During the Last Interglacial

Regionalization of the Atmospheric Dust Cycle on the Periphery of the East Antarctic Ice Sheet Since the Last Glacial Maximum

Contact Info

Product

Resources

About