| DOI: | 10.1002/2016GL070403
|
| 论文题名: | Imaging Mercury's polar deposits during MESSENGER's low-altitude campaign |
| 作者: | Chabot N.L.; Ernst C.M.; Paige D.A.; Nair H.; Denevi B.W.; Blewett D.T.; Murchie S.L.; Deutsch A.N.; Head J.W.; Solomon S.C.
|
| 刊名: | Geophysical Research Letters
|
| ISSN: | 0094-8618
|
| EISSN: | 1944-8349
|
| 出版年: | 2016
|
| 卷: | 43, 期:18 | | 起始页码: | 9461
|
| 结束页码: | 9468
|
| 语种: | 英语
|
| 英文关键词: | ice
; Mercury
; MESSENGER
; polar
|
| Scopus关键词: | Atmospheric temperature
; Deposits
; Ice
; Luminance
; Mercury (metal)
; Mercury compounds
; Organic compounds
; Reflection
; Volatile organic compounds
; Brightness variations
; MESSENGER
; Polar
; Reflectance properties
; Shadowed regions
; Space environment
; Spatial resolution
; Surface temperatures
; Mercury deposits
|
| 英文摘要: | Images obtained during the low-altitude campaign in the final year of the MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) mission provide the highest-spatial-resolution views of Mercury's polar deposits. Images for distinct areas of permanent shadow within 35 north polar craters were successfully captured during the campaign. All of these regions of permanent shadow were found to have low-reflectance surfaces with well-defined boundaries. Additionally, brightness variations across the deposits correlate with variations in the biannual maximum surface temperature across the permanently shadowed regions, supporting the conclusion that multiple volatile organic compounds are contained in Mercury's polar deposits, in addition to water ice. A recent large impact event or ongoing bombardment by micrometeoroids could deliver water as well as many volatile organic compounds to Mercury. Either scenario is consistent with the distinctive reflectance properties and well-defined boundaries of Mercury's polar deposits and the presence of volatiles in all available cold traps. ©2016. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84987942246&doi=10.1002%2f2016GL070403&partnerID=40&md5=318493ca509d0752592042ae25d78109
|
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/9581
|
| Appears in Collections: | 科学计划与规划
气候变化与战略
|
|
There are no files associated with this item.
|
|
作者单位: | The Johns Hopkins University Applied Physics Laboratory, Laurel, MD, United States
|
| Recommended Citation: | |
Chabot N.L.,Ernst C.M.,Paige D.A.,et al. Imaging Mercury's polar deposits during MESSENGER's low-altitude campaign[J]. Geophysical Research Letters,2016-01-01,43(18).
|
|
|