| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2020-11-26 |
| タイトル |
|
|
タイトル |
The thermal structure, subglacial topography and surface structures of the NE outlet of Eyjabakkajökull, east Iceland |
| タイトル |
|
|
言語 |
en |
|
タイトル |
The thermal structure, subglacial topography and surface structures of the NE outlet of Eyjabakkajökull, east Iceland |
| 言語 |
|
|
言語 |
eng |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Ground penetrating radar |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Unmanned aerial vehicle |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Crevasses |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Temperate ice |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Piezometric surface |
| 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 |
Lamsters, Kristaps
Karušs, Jānis
Krievāns, Māris
Ješkins, Jurijs
|
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
This study presents the detailed surveys of the NE outlet of Eyjabakkajökull glacier, East Iceland, from the combination of low-frequency ground penetrating radar (GPR), unmanned aerial vehicle (UAV) and GNSS measurements. Data analyses reveal the complex subglacial topography with a prominent, up to 45-m-deep longitudinal trough in the central part of the outlet that serves as the main trunk for the fast ice flow during the glacier surges. During the last decade (2010–2018), the studied part of the glacier has thinned by 4.37 m/yr on average and the ice margin has retreated ~750 m. We detect a boundary between scatter-free zone and zone of intense scattering near the ice margin and relate it to the level of piezometric surface. A very well-developed englacial drainage network in the marginal area of Eyjabakkajökull is determined from the mapped moulins and englacial hyperbolae mainly representing englacial channels. The compressional regime near the almost stagnant ice margin is confirmed from the analysis of the surface structures. |
| 書誌情報 |
en : Polar Science
巻 26,
p. 100566,
発行日 2020-12
|
| 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.2020.100566 |
|
|
関連名称 |
10.1016/j.polar.2020.100566 |
