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2024 Vol.59, Issue 2

Research Article

Reconstructing Changes in Glacial Thermal Regime and Flow Mechanisms of the East Antarctic Ice Sheet through Terrestrial Glacial Landforms

육상 빙하 지형을 이용한 동남극빙상 열 체제와 흐름 기작 변화 복원

Hyun Hee Rheea*
이 현희a*
aAssistant Professor, Department of Environmental Education, Kongju National University
a국립공주대학교 환경교육과 조교수
*Corresponding Author
30 April 2024. pp. 113-125
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Abstract

The physical interactions and deformations between paleo-glaciers and underlying landforms are preserved in terrestrial glacial landforms. Analyzing their composition provides insights into the glacial thermal regime and its effects on glacial flow. This study focuses on reconstructing the boundaries and influence of Warm-Based and Cold-Based glacial thermal regimes in a spatiotemporal context through a survey of glacial landforms in Terra Nova Bay, the terminal region of the East Antarctic Ice Sheet. The analysis explores the relationship between these thermal regimes and changes in glacial dynamics. The findings suggest that the increasing influence of Warm-Based glacial thermal regimes, coupled with rising glacial ablation, poses a higher risk of future ablation and sea-level rise than previously anticipated.

Keywords
Antarctic Ice Sheet
Glacial Landform
Glacial Thermal Regime
Cold-Based Glacier
Warm-Based Glacier

육상 빙하 지형은 과거 빙하와 기저 지형 간에 발생한 물리적 상호작용과 변형의 결과를 보존하고 있으며, 지형면에 나타나는 구성 물질의 분석은 빙하의 흐름에 영향을 미친 열 체제와 영향력에 대한 정보를 제공한다. 본 연구는 동남극빙상 말단부의 테라노바 만에 나타나는 빙하 지형으로부터 온난 빙하와 한랭 빙하의 열 체제 경계와 영향력을 시공간적으로 복원하고 빙하 거동 변화와의 관계성을 해석하였다. 점차 강화되고 있는 온난화에 의해 온난 빙하 열 체제의 영향력과 빙하 소모 속도는 모두 증가하고 있으며, 미래의 빙하 소모와 해수면 상승 속도는 기존의 예측보다 훨씬 높아질 위험이 나타난다.

키워드
남극 빙상
빙하 지형
빙하 열 체제
한랭 빙하
온난 빙하
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Information
  • Publisher :The Korean Geographical Society
  • Publisher(Ko) :대한지리학회
  • Journal Title :Journal of the Korean Geographical Society
  • Journal Title(Ko) :대한지리학회지
  • Volume : 59
  • No :2
  • Pages :113-125
  • Received Date : 2023-11-30
  • Revised Date : 2023-12-12
  • Accepted Date : 2023-12-13
  • DOI :https://doi.org/10.22776/kgs.2024.59.2.113
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