Item type |
学術雑誌論文 / Journal Article(1) |
公開日 |
2021-07-29 |
タイトル |
|
|
タイトル |
Bathymetry data and water column profiles in the shallow waters of Langhovde in Lützow-Holm Bay, East Antarctica |
タイトル |
|
|
言語 |
en |
|
タイトル |
Bathymetry data and water column profiles in the shallow waters of Langhovde in Lützow-Holm Bay, East Antarctica |
言語 |
|
|
言語 |
eng |
キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Bathymetry |
キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Water column profile |
キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Lützow-holm bay |
キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
East Antarctica |
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 |
Ishiwa, Takeshige
Tokuda, Yuki
Itaki, Takuya
Sasaki, Satoshi
Suganuma, Yusuke
Yamasaki, Shintaro
|
抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
The sediments of shallow marine waters and lakes around Antarctica provide valuable records of sea-level changes. Understanding the timing and amplitude of Antarctic Ice Sheet changes during the last deglaciation is essential to assess the effect of glacial isostatic adjustments on the present ice-sheet mass balance. However, the difficulty in accessing Antarctica makes it challenging to obtain field-based evidence of ice-sheet and sea-level change during the last deglaciation. We used a portable sonar system to measure bathymetry and water column profiles (sea temperature, salinity, dissolved oxygen, and turbidity) in Lake Nurume and shallow marine waters of Langhovde, East Antarctica, to collect baseline data for sea-level reconstruction from the Last Glacial Maximum (~20 ka). The bathymetry data reveals the surveyed shallow marine waters of Langhovde have basins of 100 m water depth with approximately −67 and −92 m sills, in which sediments provide a potentially useful sea-level archive for the last deglaciation. The water column profile in Lake Nurume reveals a chemocline at ~11 m water depth and anoxic condition below that depth. These baseline data will be useful to reconstruct sea-level and ice-sheet changes in East Antarctica. |
書誌情報 |
en : Polar Science
巻 28,
p. 100650,
発行日 2021-06
|
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.2021.100650 |
|
|
関連名称 |
10.1016/j.polar.2021.100650 |