Climate Change During the Last Deglaciation in Antarctica

Mayewski, Paul Andrew; Twickler, Mark S.; Whitlow, Sallie I.; Meeker, L. David; Yang, Qingshu; Thomas, Joseph E.; Kreutz, K. J.; Grootes, P. M.; Morse, D. L.; Steig, Eric J.; Waddington, E. D.; Saltzman, E. S.; Whung, Pai-Yei; Taylor, Kendrick C.

doi:10.1126/science.272.5268.1636

Cited by 105 publications

(64 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…From the ages available in this study, there is no discernible correlation between lake highstands/lowstands and the temperature proxy record from neighboring Taylor Dome (Mayewski et al, 1996;Stager and Mayewski, 1997;Steig et al, 2000). This lack of synchronicity between runoff/lake level and temperature has been noted in other lake level reconstructions (Whittaker et al, 2008) and throughout the instrumental climate record (Levy et al, 2013).…”

Section: Constraining the Age Of The Lower Icementioning

confidence: 86%

Stratigraphy of Lake Vida, Antarctica: hydrologic implications of 27 m of ice

et al. 2015

View full text Add to dashboard Cite

Abstract. Lake Vida, located in Victoria Valley, is one of the largest lakes in the McMurdo dry valleys and is known to contain hypersaline liquid brine sealed below 16 m of freshwater ice. For the first time, Lake Vida was drilled to a depth of 27 m. Below 21 m the ice is marked by well-sorted sand layers up to 20 cm thick within a matrix of salty ice. From ice chemistry, isotopic composition of δ 18 O and δ 2 H, and ground penetrating radar profiles, we conclude that the entire 27 m of ice formed from surface runoff and the sediment layers represent the accumulation of surface deposits. Radiocarbon and optically stimulated luminescence dating limit the maximum age of the lower ice to 6300 14 C yr BP. As the ice cover ablated downwards during periods of low surface inflow, progressive accumulation of sediment layers insulated and preserved the ice and brine beneath, analogous to the processes that preserve shallow ground ice. The repetition of these sediment layers reveals hydrologic variability in Victoria Valley during the mid-to late Holocene. Lake Vida is an exemplar site for understanding the preservation of subsurface brine, ice, and sediment in a cold desert environment.

show abstract

Section: Constraining the Age Of The Lower Icementioning

confidence: 86%

Stratigraphy of Lake Vida, Antarctica: hydrologic implications of 27 m of ice

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Ice cores retrieved from Greenland and Antarctica contain atmospheric chemistry records ranging from seasons to hundreds of thousand of years, providing insight into climatic variations over these periods (De Angelis et al 1987;Delmas and Legrand 1989;Jouzel et al 1990;Mayewski et al 1993Mayewski et al , 1994Mayewski et al , 1996. Tropical and sub-tropical glaciers do not contain records as far back in the past, however, they may provide information concerning past climatic changes in regions where such information is virtually nonexistent (e.g., Thompson et al 1984;Lyons et al 1991).…”

Section: Introductionmentioning

confidence: 99%

Aerosol and Precipitation Chemistry at a Remote Himalayan Site in Nepal

Shrestha

Wake

Dibb

et al. 2002

Aerosol Science and Technology

View full text Add to dashboard Cite

As a part of a year long aerosol measurement program in the Nepal Himalayas, a series of 12 h samples of aerosol and eventbased samples of precipitation were collected in postmonsoon, 1996; premonsoon, 1997; and monsoon, 1997. Results show that diurnal variations in the regional valley wind system are responsible for variations in the major ion (Na + , NH We thank the villagers of Phortse and the residents of Jiri for their support of the sampling program. Dr. R. W. Talbot and Dr. B. D. Keim provided a detailed review on this manuscript. We also thank DHM for providing meteorological equipment and other logistical support. Most of all, we are thankful to our observer Dorzee Sherpa, Phortse, for his hard work. Two anonymous reviewers provided some valuable suggestions that helped improve the manuscript.Address correspondence to Arun B. Shrestha, Department of Hydrology and Meteorology, P.O. Box 406, Babar Mahal, Kathmandu, Nepal. E-mail: abs@wlink.com.np nal during premonsoon. Our results support the potential for using glaciochemical records from the Himalayas to investigate variations in the strength of past monsoon circulation and westerly disturbances.

show abstract

“…Today there are abundant new data from deep ice cores that reveal much about the atmospheric conditions that prevailed over the Antarctic ice sheet during the last two glacial cycles [Jouzel et al, 1996] and that are precise enough to define distinct millennium scale reversals during the most recent deglaciation [Mayewski et al, 1993[Mayewski et al, , 1996. These records, when combined with glacial moraine data and sedimentary cores, provide important input to our current understanding of glacial evolution from the Last Glacial Maximum (LGM) to the present day [Denton et al, 1989b[Denton et al, , 1991.…”

Section: Introductionmentioning

confidence: 99%

Predictions of Antarctic crustal motions driven by present‐day ice sheet evolution and by isostatic memory of the Last Glacial Maximum

James¹,

Ivins²

1998

J. Geophys. Res.

106

112

View full text Add to dashboard Cite

Abstract. Detectable crustal motion and secular rate of change of solid-surface gravity may be produced by the Earth's response to present-day and past ice mass changes in Antarctica. Scenarios of present-day ice mass balance, previously utilized to explore the global geodetic signatures of the Antarctic ice sheet, produce elastic crustal responses that are typically bounded by uplift rates <_ 5 mm/yr, horizontal motion <_ 1 mm/yr, and solid-surface gravity change rates _< 1 •tGal/yr. In a restricted locality, one scenario produces uplift rates slightly in excess of 10 mm/yr and correspondingly enhanced horizontal and gravity rates. In contrast, the viscoelastic response to ice mass changes occurring since Last Glacial Maximum (

show abstract

Climate Change During the Last Deglaciation in Antarctica

Cited by 105 publications

References 19 publications

Stratigraphy of Lake Vida, Antarctica: hydrologic implications of 27 m of ice

Stratigraphy of Lake Vida, Antarctica: hydrologic implications of 27 m of ice

Aerosol and Precipitation Chemistry at a Remote Himalayan Site in Nepal

Predictions of Antarctic crustal motions driven by present‐day ice sheet evolution and by isostatic memory of the Last Glacial Maximum

Contact Info

Product

Resources

About