DOI: 10.1002/2016GL070535
论文题名: Greater contrast in Martian hydrological history from more accurate estimates of paleodischarge
作者: Jacobsen R.E. ; Burr D.M.
刊名: Geophysical Research Letters
ISSN: 0094-8710
EISSN: 1944-8441
出版年: 2016
卷: 43, 期: 17 起始页码: 8903
结束页码: 8911
语种: 英语
英文关键词: discharge
; fluvial
; geomorphology
; hydraulic geometry
; Mars
; terrestrial analog
Scopus关键词: Discharge (fluid mechanics)
; Geometry
; Geomorphology
; Causal relationships
; Discharge estimate
; Fluvial
; Fluvial deposits
; Hydraulic geometry
; Interior channels
; Mars
; Terrestrial analogs
; Hydraulic tools
; fluvial deposit
; fluvial geomorphology
; geometry
; gravity field
; Martian atmosphere
; natural analog
; paleohydrology
; stage-discharge relationship
; Missouri Basin
; United States
; Hesperia
英文摘要: Correlative width-discharge relationships from the Missouri River Basin are commonly used to estimate fluvial paleodischarge on Mars. However, hydraulic geometry provides alternative, and causal, width-discharge relationships derived from broader samples of channels, including those in reduced-gravity (submarine) environments. Comparison of these relationships implies that causal relationships from hydraulic geometry should yield more accurate and more precise discharge estimates. Our remote analysis of a Martian-terrestrial analog channel, combined with in situ discharge data, substantiates this implication. Applied to Martian features, these results imply that paleodischarges of interior channels of Noachian-Hesperian (~3.7 Ga) valley networks have been underestimated by a factor of several, whereas paleodischarges for smaller fluvial deposits of the Late Hesperian-Early Amazonian (~3.0 Ga) have been overestimated. Thus, these new paleodischarges significantly magnify the contrast between early and late Martian hydrologic activity. Width-discharge relationships from hydraulic geometry represent validated tools for quantifying fluvial input near candidate landing sites of upcoming missions. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84987760516&doi=10.1002%2f2016GL070535&partnerID=40&md5=1710012aebfd939e4185e16aee3deab4
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9673
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: Earth and Planetary Sciences Department, University of Tennessee, Knoxville, Knoxville, TN, United States
Recommended Citation:
Jacobsen R.E.,Burr D.M.. Greater contrast in Martian hydrological history from more accurate estimates of paleodischarge[J]. Geophysical Research Letters,2016-01-01,43(17).