Item type |
学術雑誌論文 / Journal Article(1) |
公開日 |
2022-05-20 |
タイトル |
|
|
タイトル |
Satellite and ground based estimates for ice surface velocities in the part of central Dronning Maud Land, East Antarctica: Implications for ice flux calculations |
タイトル |
|
|
言語 |
en |
|
タイトル |
Satellite and ground based estimates for ice surface velocities in the part of central Dronning Maud Land, East Antarctica: Implications for ice flux calculations |
言語 |
|
|
言語 |
eng |
キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Icesheet |
キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Interferometry |
キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Ice stream velocity |
キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Ice fluxes |
キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Mass balance |
資源タイプ |
|
|
資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
|
資源タイプ |
journal article |
アクセス権 |
|
|
アクセス権 |
metadata only access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_14cb |
著者 |
Thakur, Praveen K.
Swain, Ashit K.
Dhote, Pankaj R.
Kumar, Pradeep
Kaushik, Suvrat
Gajbhiye, Deepak
Mahagaonkar, Anirudha
Sharma, Vishal
Dharwadkar, Amit
Aggarwal, S.P.
Beg, Javed
Chauhan, Prakash
Kumar, A. Senthil
|
抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
The ice sheet and glaciers of Antarctica and Greenland represent the largest sources of freshwater on planet Earth. The understanding and quantification of their dynamic properties such as albedo, precipitation, ice mass movement, and ice elevation changes are critical for the improved climate and mass balance models. The present study utilizes space-borne optical and synthetic aperture radar (SAR) imagery to measure the ice surface velocity at high spatial resolution for a part of the central Dronning Maud Land (cDML), East Antarctica. The datasets from Landsat-8 and Sentinel-1 SAR satellite are used for ice stream velocity estimation using feature-offset tracking and differential interferometric SAR (DInSAR) methods. The derived velocity products are validated with ground based stakes network at annual time scale. The fundamental ice flow laws are used to estimate the ice outflux or discharge for selected ice stream drainage basins of cDML at fluxgate locations. The ice stream basin has been delineated using combination of elevation, slope and continental scale velocity maps. The ice influx for study area is estimated using ECMWF fifth generation reanalysis (ERA5) and Regional Atmospheric Climate Model (RACMO) v2.3 model outputs. The estimated influx and outflux are in the ranges of 0.18–4.167 Gt/y and 0.201 to 1.278 Gt/y respectively, indicating net positive mass balance for the selected area. |
書誌情報 |
en : Polar Science
巻 30,
p. 100737,
発行日 2021-12
|
ISSN |
|
|
収録物識別子タイプ |
ISSN |
|
収録物識別子 |
18739652 |
DOI |
|
|
|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.1016/j.polar.2021.100737 |
|
|
関連名称 |
10.1016/j.polar.2021.100737 |