Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL086522 |
Constraining an Ocean Model Under Getz Ice Shelf, Antarctica, Using A Gravity-Derived Bathymetry | |
Millan, Romain1,2; St-Laurent, Pierre3,4; Rignot, Eric2,5,6; Morlighem, Mathieu2; Mouginot, Jeremie1,2; Scheuchl, Bernd2 | |
2020-05-30 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2020 |
卷号 | 47期号:13 |
文章类型 | Article |
语种 | 英语 |
国家 | France; USA |
英文摘要 | Getz Ice Shelf, the largest producer of ice shelf meltwater in Antarctica, buttresses glaciers that hold enough ice to raise sea level by 22 cm. We present a new bathymetry of its sub-ice shelf cavity using a three-dimensional inversion of airborne gravity data constrained by multibeam bathymetry at sea and a reconstruction of the bedrock from mass conservation on land. The new bathymetry is deeper than previously estimated with differences exceeding 500 m in a number of regions. When incorporated into an ocean model, it yields a better description of the spatial distribution of ice shelf melt, specifically along glacier grounding lines. While the melt intensity is overestimated because of a positive bias in ocean thermal forcing, the study reveals the main pathways along which warm oceanic water enters the cavity and corroborates the observed rapid retreat of Berry Glacier along a deep channel with a retrograde bed slope. |
英文关键词 | glaciology bathymetry melt rates ocean model grounding line getz ice shelf |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000551465400039 |
WOS关键词 | PINE ISLAND GLACIER ; WEST ANTARCTICA ; TOPOGRAPHY ; BENEATH ; SENSITIVITY ; THICKNESS ; THWAITES ; RETREAT ; SURFACE ; SYSTEM |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/271646 |
专题 | 气候变化 |
作者单位 | 1.Univ Grenoble Alpes, Grenoble INP, CNRS, IRD,IGE, Grenoble, France; 2.Univ Calif Irvine, Dept Earth Syst Sci, Irvine, CA 92717 USA; 3.Old Dominion Univ, Ctr Coastal Phys Oceanog, Norfolk, VA USA; 4.Virginia Inst Marine Sci, William & Mary, Gloucester Point, VA 23062 USA; 5.CALTECH, Jet Prop Lab, Pasadena, CA USA; 6.Univ Calif Irvine, Dept Civil & Environm Engn, Irvine, CA USA |
推荐引用方式 GB/T 7714 | Millan, Romain,St-Laurent, Pierre,Rignot, Eric,et al. Constraining an Ocean Model Under Getz Ice Shelf, Antarctica, Using A Gravity-Derived Bathymetry[J]. GEOPHYSICAL RESEARCH LETTERS,2020,47(13). |
APA | Millan, Romain,St-Laurent, Pierre,Rignot, Eric,Morlighem, Mathieu,Mouginot, Jeremie,&Scheuchl, Bernd.(2020).Constraining an Ocean Model Under Getz Ice Shelf, Antarctica, Using A Gravity-Derived Bathymetry.GEOPHYSICAL RESEARCH LETTERS,47(13). |
MLA | Millan, Romain,et al."Constraining an Ocean Model Under Getz Ice Shelf, Antarctica, Using A Gravity-Derived Bathymetry".GEOPHYSICAL RESEARCH LETTERS 47.13(2020). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论