scholarly journals Glaciological and Geomorphological Reconnaissance in the Antarctic in 1956

1957 ◽  
Vol 3 (21) ◽  
pp. 54-61 ◽  
Author(s):  
P. A. Shumskiy
Keyword(s):  
Ice Sheet ◽  
Preliminary Account ◽  
Antarctic Expedition ◽  
Ice Regime ◽  
Academy Of Sciences ◽  
The Antarctic

Abstract This paper presents a preliminary account of the glaciological observations made by the Antarctic Expedition of the U.S.S.R. Academy of Sciences in Kaiser Wilhelm II Land, Queen Mary Land and Knox Coast in 1956. The topography of the edge of the ice sheet is described, and the ice regime is discussed, particularly in relation to the existence of ice-free areas such as “Bunger’s oasis”.

scholarly journals Glaciological and Geomorphological Reconnaissance in the Antarctic in 1956

1957 ◽  
Vol 3 (21) ◽  
pp. 54-61
Author(s):  
P. A. Shumskiy
Keyword(s):  
Ice Sheet ◽  
Preliminary Account ◽  
Antarctic Expedition ◽  
Ice Regime ◽  
Academy Of Sciences ◽  
The Antarctic

AbstractThis paper presents a preliminary account of the glaciological observations made by the Antarctic Expedition of the U.S.S.R. Academy of Sciences in Kaiser Wilhelm II Land, Queen Mary Land and Knox Coast in 1956. The topography of the edge of the ice sheet is described, and the ice regime is discussed, particularly in relation to the existence of ice-free areas such as “Bunger’s oasis”.

The first publication of The South Polar Times, Volume IV

Polar Record ◽  
2013 ◽  
Vol 50 (1) ◽  
pp. 112-112
Author(s):  
Ann Savours
Keyword(s):  
Ice Sheet ◽  
The South ◽  
Mcmurdo Sound ◽  
Antarctic Expedition ◽  
Antarctic Continent ◽  
Terra Nova ◽  
The Antarctic ◽  
South Polar

Polar bibliophiles, librarians and readers will be familiar with the three handsome facsimile volumes of the first Antarctic newspaper, published in 1907 and 1914 and edited in turn by E. Shackleton, L.C. Bernacchi and A. Cherry-Garrard during the National Antarctic Expedition, 1901–1904 and the British Antarctic Expedition 1910–1913. These expeditions were led by Captain R.F. Scott R.N. in Discovery and Terra Nova respectively. From S.Y. Discovery, beset for two winters in the ice of McMurdo Sound were made the first extensive sledge journeys into the interior of the Antarctic continent, including the great ice sheet or plateau. These were further prolonged, following Shackleton's Nimrod expedition, while the pursuit of science during both Scott expeditions led to the publication in London of two monumental sets of scientific and geographical results, plus new charts and maps.

scholarly journals Complex Principal Component Analysis of Antarctic Ice Sheet Mass Balance

2021 ◽  
Vol 13 (3) ◽  
pp. 480
Author(s):  
Jingang Zhan ◽  
Hongling Shi ◽  
Yong Wang ◽  
Yixin Yao
Keyword(s):  
Principal Component Analysis ◽  
Ice Sheet ◽  
Low Frequency ◽  
Principal Component ◽  
Equatorial Pacific ◽  
Mass Change ◽  
Frequency Variation ◽  
Periodic Signal ◽  
Time Frequency ◽  
The Antarctic

Ice sheet changes of the Antarctic are the result of interactions among the ocean, atmosphere, and ice sheet. Studying the ice sheet mass variations helps us to understand the possible reasons for these changes. We used 164 months of Gravity Recovery and Climate Experiment (GRACE) satellite time-varying solutions to study the principal components (PCs) of the Antarctic ice sheet mass change and their time-frequency variation. This assessment was based on complex principal component analysis (CPCA) and the wavelet amplitude-period spectrum (WAPS) method to study the PCs and their time-frequency information. The CPCA results revealed the PCs that affect the ice sheet balance, and the wavelet analysis exposed the time-frequency variation of the quasi-periodic signal in each component. The results show that the first PC, which has a linear term and low-frequency signals with periods greater than five years, dominates the variation trend of ice sheet in the Antarctic. The ratio of its variance to the total variance shows that the first PC explains 83.73% of the mass change in the ice sheet. Similar low-frequency signals are also found in the meridional wind at 700 hPa in the South Pacific and the sea surface temperature anomaly (SSTA) in the equatorial Pacific, with the correlation between the low-frequency periodic signal of SSTA in the equatorial Pacific and the first PC of the ice sheet mass change in Antarctica found to be 0.73. The phase signals in the mass change of West Antarctica indicate the upstream propagation of mass loss information over time from the ocean–ice interface to the southward upslope, which mainly reflects ocean-driven factors such as enhanced ice–ocean interaction and the intrusion of warm saline water into the cavities under ice shelves associated with ice sheets which sit on retrograde slopes. Meanwhile, the phase signals in the mass change of East Antarctica indicate the downstream propagation of mass increase information from the South Pole toward Dronning Maud Land, which mainly reflects atmospheric factors such as precipitation accumulation.

scholarly journals A Joint Inversion Estimate of Antarctic Ice Sheet Mass Balance Using Multi-Geodetic Data Sets

2019 ◽  
Vol 11 (6) ◽  
pp. 653 ◽  
Author(s):  
Chunchun Gao ◽  
Yang Lu ◽  
Zizhan Zhang ◽  
Hongling Shi
Keyword(s):  
Mass Balance ◽  
Joint Inversion ◽  
Ice Sheet ◽  
Mass Change ◽  
West Antarctica ◽  
Amundsen Sea ◽  
Antarctic Ice Sheet ◽  
Forward Models ◽  
Uplift Rates ◽  
The Antarctic

Many recent mass balance estimates using the Gravity Recovery and Climate Experiment (GRACE) and satellite altimetry (including two kinds of sensors of radar and laser) show that the ice mass of the Antarctic ice sheet (AIS) is in overall decline. However, there are still large differences among previously published estimates of the total mass change, even in the same observed periods. The considerable error sources mainly arise from the forward models (e.g., glacial isostatic adjustment [GIA] and firn compaction) that may be uncertain but indispensable to simulate some processes not directly measured or obtained by these observations. To minimize the use of these forward models, we estimate the mass change of ice sheet and present-day GIA using multi-geodetic observations, including GRACE and Ice, Cloud and land Elevation Satellite (ICESat), as well as Global Positioning System (GPS), by an improved method of joint inversion estimate (JIE), which enables us to solve simultaneously for the Antarctic GIA and ice mass trends. The GIA uplift rates generated from our JIE method show a good agreement with the elastic-corrected GPS uplift rates, and the total GIA-induced mass change estimate for the AIS is 54 ± 27 Gt/yr, which is in line with many recent GPS calibrated GIA estimates. Our GIA result displays the presence of significant uplift rates in the Amundsen Sea Embayment of West Antarctica, where strong uplift has been observed by GPS. Over the period February 2003 to October 2009, the entire AIS changed in mass by −84 ± 31 Gt/yr (West Antarctica: −69 ± 24, East Antarctica: 12 ± 16 and the Antarctic Peninsula: −27 ± 8), greater than the GRACE-only estimates obtained from three Mascon solutions (CSR: −50 ± 30, JPL: −71 ± 30, and GSFC: −51 ± 33 Gt/yr) for the same period. This may imply that single GRACE data tend to underestimate ice mass loss due to the signal leakage and attenuation errors of ice discharge are often worse than that of surface mass balance over the AIS.

scholarly journals Characteristics of the Antarctic Ice-Sheet

Nature ◽  
1959 ◽  
Vol 183 (4675) ◽  
pp. 1575-1577 ◽  
Author(s):  
T. F. GASKELL
Keyword(s):  
Ice Sheet ◽  
Antarctic Ice Sheet ◽  
The Antarctic
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