globalchange  > 科学计划与规划
DOI: 10.1002/2016GL068434
论文题名:
A revised surface age for the North Polar Layered Deposits of Mars
作者: Landis M.E.; Byrne S.; Daubar I.J.; Herkenhoff K.E.; Dundas C.M.
刊名: Geophysical Research Letters
ISSN: 0094-9133
EISSN: 1944-8864
出版年: 2016
卷: 43, 期:7
起始页码: 3060
结束页码: 3068
语种: 英语
英文关键词: impact crater statistics ; impact craters ; Mars polar science ; North Polar Layered Deposits, Mars ; spacecraft observations
Scopus关键词: Climate change ; Stratigraphy ; Structural geology ; Crater diameter ; Diameter dependent ; Impact craters ; Layered deposits ; Mars polar science ; New production ; Surface accumulation ; Target strength ; Deposits
英文摘要: The North Polar Layered Deposits (NPLD) of Mars contain a complex stratigraphy that has been suggested to retain a record of past eccentricity- and obliquity-forced climate changes. The surface accumulation rate in the current climate can be constrained by the crater retention age. We scale NPLD crater diameters to account for icy target strength and compare surface age using a new production function for recent small impacts on Mars to the previously used model of Hartmann (2005). Our results indicate that ice is accumulating in these craters several times faster than previously thought, with a 100 m diameter crater being completely infilled within centuries. Craters appear to have a diameter-dependent lifetime, but the data also permit a complete resurfacing of the NPLD at ∼1.5 ka. © 2016. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84963568346&doi=10.1002%2f2016GL068434&partnerID=40&md5=ed2b6773bd2e97e170f5e77f59974ef0
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10096
Appears in Collections:科学计划与规划
气候变化与战略

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作者单位: Lunar and Planetary Laboratory, University of Arizona, Tucson, AZ, United States

Recommended Citation:
Landis M.E.,Byrne S.,Daubar I.J.,et al. A revised surface age for the North Polar Layered Deposits of Mars[J]. Geophysical Research Letters,2016-01-01,43(7).
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