气候变化领域集成服务门户(CCPortal): Morphodynamic Hierarchy and the Fabric of the Sedimentary Record

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DOI	10.1029/2020GL087921
	Morphodynamic Hierarchy and the Fabric of the Sedimentary Record
	Ganti V.; Hajek E.A.; Leary K.; Straub K.M.; Paola C.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:14
英文摘要	The low temporal completeness of fluvial strata could indicate that recorded events represent unusual and extreme conditions. However, field observations suggest that preserved strata predominantly record relatively common transport conditions—a paradox termed the strange ordinariness of fluvial strata. We theorize that the self-organization of fluvial systems into a morphodynamic hierarchy that spans bed to basin scales facilitates the preservation of ordinary events in fluvial strata. Using a new probabilistic model and existing field and experimental data sets across these scales, we show that fluvial morphodynamic hierarchy enhances the stratigraphic preservation of medial topography—ordinary events. We show that lower-order landforms have a higher likelihood of complete preservation when the kinematic rates of evolution of successive levels in the morphodynamic hierarchy are comparable. We highlight how relative changes in kinematic rates of evolution of successive levels in the morphodynamic hierarchy can manifest as major shifts in stratigraphic architecture through Earth history. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Stratigraphy; Topography; Basin scale; Extreme conditions; Field observations; Fluvial systems; Probabilistic modeling; Sedimentary records; Self organizations; Stratigraphic architecture; Kinematics; data set; field method; landform; model; morphodynamics; observational method; self organization
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170079
作者单位	Department of Geography, University of California, Santa Barbara, CA, United States; Department of Earth Science, University of California, Santa Barbara, CA, United States; Department of Geological Sciences, Pennsylvania State University, State College, PA, United States; Department of Earth and Environmental Sciences, Tulane University of Louisiana, New Orleans, LA, United States; Department of Earth Science and St. Anthony Falls Laboratory, University of Minnesota, Twin Cities, Minneapolis, MN, United States
推荐引用方式 GB/T 7714	Ganti V.,Hajek E.A.,Leary K.,et al. Morphodynamic Hierarchy and the Fabric of the Sedimentary Record[J],2020,47(14).
APA	Ganti V.,Hajek E.A.,Leary K.,Straub K.M.,&Paola C..(2020).Morphodynamic Hierarchy and the Fabric of the Sedimentary Record.Geophysical Research Letters,47(14).
MLA	Ganti V.,et al."Morphodynamic Hierarchy and the Fabric of the Sedimentary Record".Geophysical Research Letters 47.14(2020).