globalchange  > 气候变化事实与影响
DOI: 10.1080/04353676.2019.1588543
WOS记录号: WOS:000466080500001
论文题名:
Constraining 135 years of mass balance with historic structure-from-motion photogrammetry on Storglaciaren, Sweden
作者: Holmlund, Erik S.1,2; Holmlund, Per2
通讯作者: Holmlund, Erik S.
刊名: GEOGRAFISKA ANNALER SERIES A-PHYSICAL GEOGRAPHY
ISSN: 0435-3676
EISSN: 1468-0459
出版年: 2019
语种: 英语
英文关键词: structure-from-motion ; mass balance reconstruction ; climate change
WOS关键词: MULTITEMPORAL AERIAL IMAGES ; COLD SURFACE-LAYER ; RABOTS GLACIAR ; VOLUME ; TOPOGRAPHY ; REANALYSIS ; STEREO ; RECORD ; LENGTH ; MAPS
WOS学科分类: Geography, Physical ; Geology
WOS研究方向: Physical Geography ; Geology
英文摘要:

Geodetic volume estimates of Storglaciaren in Sweden suggest a 28% loss in total ice mass between 1910 and 2015. Terrestrial photographs from 1910 of Tarfala valley, where Storglaciaren is situated, allow for an accurate reconstruction of the glacier's surface using Structure-from-Motion photogrammetry, which we used for past volume and mass estimations. The glacier's yearly mass balance gradient and net mass balance was also estimated back to 1880 using weather data from Karesuando, 170 km north-east of Storglaciaren, through neural network regression. These combined reconstructions provide a continuous mass change series between the end of the Little Ice Age and 1946, when field data become available. The resultant reconstruction suggests a state close to equilibrium between 1880 and the 1910s, followed by drastic melt until the 1970s, constituting 76% of the 1910-2015 ice loss. More favourable conditions subsequently stabilized the mass balance until the late 1990s, after which Storglaciaren started losing mass again. The 1910 reconstruction allows for a more accurate mass change series than previous estimates, and the methodology can be used on other glaciers where early photographic material exists.


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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/132392
Appears in Collections:气候变化事实与影响

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作者单位: 1.Univ Ctr Svalbard, Dept Arctic Geol, Longyearbyen, Norway
2.Stockholm Univ, Dept Phys Geog, Stockholm, Sweden

Recommended Citation:
Holmlund, Erik S.,Holmlund, Per. Constraining 135 years of mass balance with historic structure-from-motion photogrammetry on Storglaciaren, Sweden[J]. GEOGRAFISKA ANNALER SERIES A-PHYSICAL GEOGRAPHY,2019-01-01
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