当前位置: X-MOL 学术Polar Sci. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Estimating spatio-temporal changes in front edge of the Ronne Ice Shelf in context of climate change using remote sensing based integrated approach
Polar Science ( IF 1.8 ) Pub Date : 2023-06-20 , DOI: 10.1016/j.polar.2023.100967
Bishakha Kundu , Debrupa Chatterjee , Fumming Xie , Dharmaveer Singh

Climate variability is thought to have an impact on the Ronne Ice Shelf (RIS), one of the largest ice shelf in Antarctica, located at the mouth of the Weddell Sea. However, investigations evaluating the impact of climate variability on the geometry (front edge) of this ice body have not yet been done. This study examines a spatial-temporal shift in the front edge of the Ronne Ice Shelf during the years 2004–2019 using an integrated approach based on remote sensing and climate data. The Moderate Resolution Imaging Spectro-radiometer (MODIS) satellite images have been used to study the changes in the ice shelf along transects drawn at a constant interval of 5 km throughout the 16-year period over the second half of the austral summer months (February to March). The study reveals that there has been net progradation of ∼20 km in the front edge of the ice shelf in the sector 2 between 2004 and 2019. This progradation in the ice shelf may be attributed to draining of upper ice streams to the RIS and the decrease in temperature. Thus, the present study establishes how a combination of the use of satellite imagery and statistics can effectively be used to comprehend and quantify changes in the variability of the front edge of the ice shelf.



中文翻译:

使用基于遥感的综合方法估计气候变化背景下罗纳冰架前缘的时空变化

人们认为气候变化对龙讷冰架(RIS)有影响,龙讷冰架是南极洲最大的冰架之一,位于威德尔海口。然而,评估气候变化对该冰体几何形状(前缘)影响的调查尚未完成。本研究采用基于遥感和气候数据的综合方法,研究了 2004 年至 2019 年期间罗纳冰架前缘的时空变化。中分辨率成像光谱辐射计(MODIS)卫星图像已被用来研究在整个 16 年期间,南半球夏季下半年(2 月 20 日)冰架沿着以 5 公里恒定间隔绘制的横断面的变化。至三月)。研究表明,已经有网络2004 年至 2019 年间,第 2 区冰架前缘前进了约 20 公里。冰架的这种前进可能归因于上部冰流向 RIS 的排放和温度下降。因此,本研究确定了如何结合使用卫星图像和统计数据来有效地理解和量化冰架前缘变化的变化。

更新日期:2023-06-20
down
wechat
bug