High snow accumulation on Amundsen Sea coastal ice rise, West Antarctica
- 주제(키워드) Antarctica , Bear Peninsula , Moore Dome , snow -pit.
- 주제(기타) Ecology; Geosciences, Multidisciplinary
- 설명문(일반) [Hong, Sang -Bum; Lee, Won Sang] Korea Polar Res Inst, Div Glacial Environm Res, 26 Songdomirae Ro, Incheon 21990, South Korea; [Nyamgerel, Yalalt; Lee, Jeonghoon] Ewha Womans Univ, Dept Sci Educ, 52 Ewhayeodae Gil, Seoul 120750, South Korea
- 등재 SCIE, SCOPUS
- OA유형 Gold Open Access
- 발행기관 POLSKA AKAD NAUK, POLISH ACAD SCIENCES
- 발행년도 2023
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000213608
- 본문언어 영어
- Published As https://doi.org/10.24425/ppr.2023.145440
초록/요약
Polar snow and its accumulation preserve valuable information derived from the atmosphere on past climate and environmental changes in high resolution, particularly in coastal sites. A 2.5-m snow-pit was excavated from the coastal ice rise (Moore Dome) near Amundsen Sea region in February 2012. This study evaluated the isotopic and chemical compositions in the snow-pit and compared them with meteorological variables. Based on the seasonal peaks of the MSA and nssSO42- together with delta 18O, delta D, and d-excess, the snow-pit record was corresponded to accumulation during austral winter 2011 to summer 2011/2012. The annual mean accumulation rate was assumed thus to be as large as or even higher than 1.03 m w.e. yr-1 at this site. A relatively warm winter temperature in 2011 was traceable in the variations of delta 18O, delta D, and d-excess. This study emphasizes the importance of the high snow accumulation observed at this site in providing valuable information on sub-annual variations in climate and environmental changes through the study of longer ice cores.
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