Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016WR020234 |
Continuous monitoring of snowpack dynamics in alpine terrain by aboveground neutron sensing | |
Schattan, Paul1,2; Baroni, Gabriele3,4; Oswald, Sascha E.4; Schoeber, Johannes5; Fey, Christine1,5; Kormann, Christoph4; Huttenlau, Matthias1; Achleitner, Stefan6 | |
2017-05-01 | |
发表期刊 | WATER RESOURCES RESEARCH
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ISSN | 0043-1397 |
EISSN | 1944-7973 |
出版年 | 2017 |
卷号 | 53期号:5 |
文章类型 | Article |
语种 | 英语 |
国家 | Austria; Germany |
英文摘要 | The characteristics of an aboveground cosmic-ray neutron sensor (CRNS) are evaluated for monitoring a mountain snowpack in the Austrian Alps from March 2014 to June 2016. Neutron counts were compared to continuous point-scale snow depth (SD) and snow-water-equivalent (SWE) measurements from an automatic weather station with a maximum SWE of 600 mm (April 2014). Several spatially distributed Terrestrial Laser Scanning (TLS)-based SD and SWE maps were additionally used. A strong nonlinear correlation is found for both SD and SWE. The representative footprint of the CRNS is in the range of 230-270 m. In contrast to previous studies suggesting signal saturation at around 100 mm of SWE, no complete signal saturation was observed. These results imply that CRNS could be transferred into an unprecedented method for continuous detection of spatially averaged SD and SWE for alpine snowpacks, though with sensitivity decreasing with increasing SWE. While initially different functions were found for accumulation and melting season conditions, this could be resolved by accounting for a limited measurement depth. This depth limit is in the range of 200 mm of SWE for dense snowpacks with high liquid water contents and associated snow density values around 450 kg m(-3) and above. In contrast to prior studies with shallow snowpacks, interannual transferability of the results is very high regardless of presnowfall soil moisture conditions. This underlines the unexpectedly high potential of CRNS to close the gap between point-scale measurements, hydrological models, and remote sensing of the cryosphere in alpine terrain. |
英文关键词 | cosmic-ray neutron sensing snow hydrology continuous snowpack monitoring alpine environment |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000403712100009 |
WOS关键词 | RAY SOIL-MOISTURE ; WATER EQUIVALENT ; SHIELDING FACTORS ; DEPTH ; MODEL ; SENSOR ; BASIN ; MODIS ; LIDAR ; ASSIMILATION |
WOS类目 | Environmental Sciences ; Limnology ; Water Resources |
WOS研究方向 | Environmental Sciences & Ecology ; Marine & Freshwater Biology ; Water Resources |
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/20468 |
专题 | 资源环境科学 |
作者单位 | 1.AlpS Ctr Climate Change Adaptat, Innsbruck, Austria; 2.Univ Innsbruck, Inst Geog, Innsbruck, Austria; 3.UFZ Helmholtz Ctr Environm Res, Dept Computat Hydrosyst, Subsurface Hydrol Grp, Leipzig, Germany; 4.Univ Potsdam, Inst Earth & Environm Sci, Potsdam, Germany; 5.TIWAG Tiroler Wasserkraft AG, Innsbruck, Austria; 6.Univ Innsbruck, Unit Hydraul Engn, Innsbruck, Austria |
推荐引用方式 GB/T 7714 | Schattan, Paul,Baroni, Gabriele,Oswald, Sascha E.,et al. Continuous monitoring of snowpack dynamics in alpine terrain by aboveground neutron sensing[J]. WATER RESOURCES RESEARCH,2017,53(5). |
APA | Schattan, Paul.,Baroni, Gabriele.,Oswald, Sascha E..,Schoeber, Johannes.,Fey, Christine.,...&Achleitner, Stefan.(2017).Continuous monitoring of snowpack dynamics in alpine terrain by aboveground neutron sensing.WATER RESOURCES RESEARCH,53(5). |
MLA | Schattan, Paul,et al."Continuous monitoring of snowpack dynamics in alpine terrain by aboveground neutron sensing".WATER RESOURCES RESEARCH 53.5(2017). |
条目包含的文件 | 条目无相关文件。 |
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