Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018GL079734 |
The Ice-Free Topography of Svalbard | |
Fuerst, Johannes J.1; Navarro, Francisco2; Gillet-Chaulet, Fabien3,4; Huss, Matthias5,6; Moholdt, Geir7; Fettweis, Xavier8; Lang, Charlotte8; Seehaus, Thorsten1; Ai, Songtao9; Benham, Toby J.10; Benn, Douglas I.11; Bjornsson, Helgi12; Dowdeswell, Julian A.10; Grabiec, Mariusz13; Kohler, Jack7; Lavrentiev, Ivan14; Lindback, Katrin7; Melvold, Kjetil1,5,15; Pettersson, Rickard16; Rippin, David17; Saintenoy, Albane18; Sanchez-Gamez2; Schuler, Thomas V.19,20; Sevestre, Heidi11; Vasilenko, Evgeny21; Braun, Matthias H.1 | |
2018-11-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:21页码:11760-11769 |
文章类型 | Article |
语种 | 英语 |
国家 | Germany; Spain; France; Switzerland; Norway; Belgium; Peoples R China; England; Scotland; Iceland; Poland; Russia; Sweden; Uzbekistan |
英文摘要 | We present a first version of the Svalbard ice-free topography (SVIFT1.0) using a mass conserving approach for mapping glacier ice thickness. SVIFT1.0 is informed by more than 1 million point measurements, totalling more than 8,700 km of thickness profiles. SVIFT1.0 is publicly available and represents the geometric state around the year 2010. Our estimate for the total ice volume is 6,199 km(3), equivalent to 1.5-cm sea level rise. The thickness map suggests that 13% of the glacierized area is grounded below sea level. A complementary map of error estimates comprises uncertainties in the thickness surveys as well as in other input variables. Aggregated error estimates are used to define a likely ice-volume range of 5,200-7,300 km(3). The ice front thickness of marine-terminating glaciers is a key quantity for ice loss attribution because it controls the potential ice discharge by iceberg calving into the ocean. We find a mean ice front thickness of 135 m for the archipelago (likely range 123-158 m). Plain Language Summary Svalbard is an archipelago in the Arctic, north of Norway, which is comparable in size to the New York metropolitan area. Roughly half of it is covered by glacier ice. Yet to this day, the ice volume stored in the many glaciers on Svalbard is not well known. Many attempts have been made to infer a total volume estimate, but results differ substantially. This surprises because of the long research activity in this area. A large record of more than 1 million thickness measurements exists, making Svalbard an ideal study area for the application of a state-of-the-art mapping approach for glacier ice thickness. The mapping approach computes an ice volume that will raise global sea level by more than half an inch if instantaneously melted. If spread over the metropolitan area, New York would be buried beneath a 100-m ice cover. The asset of this approach is that it provides not only a thickness map for each glacier on the archipelago but also an error map that defines the likely local thickness range. Finally, we provide the first well-informed estimate of the ice front thickness of all marine-terminating glaciers that loose icebergs to the ocean. The archipelago-wide mean ice front cliff is 135 m. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000451832600028 |
WOS关键词 | SURFACE MASS-BALANCE ; GLACIER VOLUME ; TIDEWATER GLACIER ; THICKNESS ; SPITSBERGEN ; CLIMATE ; CAP ; NORDAUSTLANDET ; ACCUMULATION ; INTRUSIONS |
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/26737 |
专题 | 气候变化 |
作者单位 | 1.Univ Erlangen Nurnberg, Inst Geog, Erlangen, Germany; 2.Univ Politecn Madrid, Dept Matemat Aplicada Tecnol Informac & Comunicac, ETSI Telecomunicac, Madrid, Spain; 3.Inst Geosci Environm, Grenoble, France; 4.Univ Grenoble Alpes, CNRS, IRD, Grenoble INP,IGE, Grenoble, France; 5.Univ Fribourg, Dept Geosci, Fribourg, Switzerland; 6.Swiss Fed Inst Technol, Lab Hydraul Hydrol & Glaciol, Zurich, Switzerland; 7.Norwegian Polar Res Inst, Fram Ctr, Tromso, Norway; 8.Univ Liege, Dept Geog, Liege, Belgium; 9.Wuhan Univ, Chinese Antarctic Ctr Surveying & Mapping, Wuhan, Hubei, Peoples R China; 10.Univ Cambridge, Scott Polar Res Inst, Cambridge, England; 11.Univ St Andrews, St Andrews Glaciol, Sch Geog & Sustainable Dev, St Andrews, Fife, Scotland; 12.Univ Iceland, Inst Earth Sci, Reykjavik, Iceland; 13.Univ Silesia Katowice, Fac Earth Sci, Katowice, Poland; 14.Russian Acad Sci, Inst Geog, Moscow, Russia; 15.Norwegian Water Resources & Energy Directorate NV, Oslo, Norway; 16.Uppsala Univ, Dept Earth Sci, Geoctr, Uppsala, Sweden; 17.Univ York, Dept Environm, York, N Yorkshire, England; 18.Univ Paris Saclay, Univ Paris Sud, GEOPS, CNRS, Orsay, France; 19.Univ Oslo, Dept Geosci, Oslo, Norway; 20.UNIS Univ Ctr Svalbard, Dept Arctic Geophys, Longyearbyen, Norway; 21.Acad Sci Uzbek, Inst Ind Res Akadempribor, Tashkent, Uzbekistan |
推荐引用方式 GB/T 7714 | Fuerst, Johannes J.,Navarro, Francisco,Gillet-Chaulet, Fabien,et al. The Ice-Free Topography of Svalbard[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(21):11760-11769. |
APA | Fuerst, Johannes J..,Navarro, Francisco.,Gillet-Chaulet, Fabien.,Huss, Matthias.,Moholdt, Geir.,...&Braun, Matthias H..(2018).The Ice-Free Topography of Svalbard.GEOPHYSICAL RESEARCH LETTERS,45(21),11760-11769. |
MLA | Fuerst, Johannes J.,et al."The Ice-Free Topography of Svalbard".GEOPHYSICAL RESEARCH LETTERS 45.21(2018):11760-11769. |
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