| Item type |
学術雑誌論文 / Journal Article(1) |
| 公開日 |
2025-02-06 |
| タイトル |
|
|
タイトル |
The Periglacial Landforms and Estimated Subsurface Ice Distribution in the Northern Mid-Latitude of Mars |
|
言語 |
en |
| 言語 |
|
|
言語 |
eng |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
Mars |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
orbital-scale climate change |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
periglacial landform |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
subsurface ice |
| キーワード |
|
|
言語 |
en |
|
主題Scheme |
Other |
|
主題 |
thermal contraction polygon |
| 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 |
open access |
|
アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
| 著者 |
Sako, Takaki
Hasegawa, Hitoshi
Trishit Ruj
Komatsu, Goro
Sekine, Yasuhito
|
| 抄録 |
|
|
内容記述タイプ |
Abstract |
|
内容記述 |
Subsurface ice in the mid-latitude regions is a significant water inventory on present-day Mars, and their volume and distribution are thought to have varied due to the orbitally induced paleoclimatic changes. Using high-resolution satellite images, the present study explores the distributions of three presumed periglacial landforms (thermal contraction polygons, fractured mounds, and brain terrains) that could provide evidence for the present-day subsurface ice distribution in the northern mid-latitude (30°–42°N). We identified the three periglacial landforms concentrated within the regions of 0°–40°E, 60°–100°E, and 160°–210°E in the latitude of >33°N. Their distributions are in agreement with the occurrence of fresh ice-exposing craters and the estimated area of high annual water ice budget obtained by the general circulation model, reflecting the present-day subsurface ice distribution. We further classified the thermal contraction polygons into five types based on their morphology, and investigated various distribution patterns for each type. Among them, high-centered polygons are the most abundant type in the survey area, whereas low-centered polygons are less prominent and observed only at >38°N. The large-sized mixture polygons, which were only found in certain areas of 57°–92°E, are distributed in areas where the atmospheric model indicates that the highest annual water ice budget occurred during the past high-obliquity period, but that the water ice budget has decreased during the present-day low-obliquity condition. These findings, along with insights from possible terrestrial analogs in the Arctic Archipelago and northern Canada, suggest that regions where large-sized mixture polygons formed contained significant amounts of water ice in the past, but have undergone intense degradation over time. |
|
言語 |
en |
| 内容記述 |
|
|
内容記述タイプ |
Other |
|
内容記述 |
We appreciate two anonymus reviewers for their detailed and constructive comments, which greatly helped improving this paper, and Dr. Bradley Thomson for handling this manuscript. The authors also thank Dr. Shohei Aoki of the University of Tokyo, Prof. Tomohiro Usui of JAXA ISAS, Dr. Arihiro Kamada of Tohoku University and Mr. Hiroki Shozaki of Tokyo Institute of Technology for providing valuable comments. This work was financially supported by JSPS Grant-in-Aid for Scientific Research (B) (no. 23H01232). |
|
言語 |
en |
| bibliographic_information |
en : Journal of Geophysical Research: Planets
巻 130,
号 1,
p. e2023JE008232,
発行日 2024-12-30
|
| item_11_source_id_7 |
|
|
収録物識別子タイプ |
EISSN |
|
収録物識別子 |
2169-9100 |
| item_11_relation_11 |
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|
関連タイプ |
isIdenticalTo |
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|
識別子タイプ |
DOI |
|
|
関連識別子 |
https://doi.org/10.1029/2023JE008232 |
| 権利 |
|
|
言語 |
en |
|
権利情報 |
© 2024. The Author(s). This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial‐NoDerivs License, which permits use and distribution in any medium, provided the original work is properly cited, the use is non‐commercial and no modifications or adaptations are made. |
| 出版タイプ |
|
|
出版タイプ |
VoR |
|
出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| 出版者 |
|
|
出版者 |
John Wiley and Sons Inc |
|
言語 |
en |
JGR Planets _130_1_e2023JE008232.pdf (7.5 MB)
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