Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018GL077869 |
Vertical Structure of Diurnal Englacial Hydrology Cycle at Helheim Glacier, East Greenland | |
Vankova, Irena1,2; Voytenko, Denis1,2; Nicholls, Keith W.3; Xie, Surui4; Parizek, Byron R.5,6; Holland, David M.1,2 | |
2018-08-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:16页码:8352-8362 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; U Arab Emirates; England |
英文摘要 | The interior dynamics of Helheim Glacier were monitored using an autonomous phase-sensitive radio-echo sounder (ApRES) during two consecutive summers. The return signals from all observational sites exhibited strong non-tidal, depth-dependent diurnal variations. We show that these variations in the glacier interior can be explained by an englacial diurnal meltwater cycle: a data interpretation that assumes constant ice-column composition through time leads to dynamical inconsistencies with concurrent observations from GPS and terrestrial radar. The observed diurnal meltwater cycle is spatially variable, both between different sites and in the vertical, consistent with the existence of a dense and complex englacial hydrologic network. Future applications of this observational technique could reveal long-term meltwater behavior inside glaciers and ice sheets, leading to an improved understanding of the spatiotemporal evolution of the basal boundary conditions needed to simulate them realistically. |
英文关键词 | englacial hydrology Helheim Glacier ApRES glacier dynamics diurnal cycle meltwater |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000445612500053 |
WOS关键词 | TERRESTRIAL RADAR INTERFEROMETRY ; GROUND-PENETRATING RADAR ; BASAL MELT RATES ; ICE-SHEET ; DRAINAGE SYSTEM ; SUBGLACIAL DRAINAGE ; TEMPERATE GLACIERS ; SURFACE MELT ; MASS-BALANCE ; WATER-FLOW |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/28622 |
专题 | 气候变化 |
作者单位 | 1.NYU, Courant Inst Math Sci, 251 Mercer St, New York, NY 10003 USA; 2.New York Univ, Ctr Global Sea Level Change, Abu Dhabi, U Arab Emirates; 3.British Antarctic Survey, Nat Environm Res Council, Cambridge, England; 4.Univ S Florida, Sch Geosci, Tampa, FL USA; 5.Penn State Univ, Math & Geosci, Du Bois, PA USA; 6.Penn State Univ, Dept Geosci, University Pk, PA 16802 USA |
推荐引用方式 GB/T 7714 | Vankova, Irena,Voytenko, Denis,Nicholls, Keith W.,et al. Vertical Structure of Diurnal Englacial Hydrology Cycle at Helheim Glacier, East Greenland[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(16):8352-8362. |
APA | Vankova, Irena,Voytenko, Denis,Nicholls, Keith W.,Xie, Surui,Parizek, Byron R.,&Holland, David M..(2018).Vertical Structure of Diurnal Englacial Hydrology Cycle at Helheim Glacier, East Greenland.GEOPHYSICAL RESEARCH LETTERS,45(16),8352-8362. |
MLA | Vankova, Irena,et al."Vertical Structure of Diurnal Englacial Hydrology Cycle at Helheim Glacier, East Greenland".GEOPHYSICAL RESEARCH LETTERS 45.16(2018):8352-8362. |
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