DOI: 10.1002/grl.50953
论文题名: Multiple fluvial processes detected by riverside seismic and infrasound monitoring of a controlled flood in the Grand Canyon
作者: Schmandt B. ; Aster R.C. ; Scherler D. ; Tsai V.C. ; Karlstrom K.
刊名: Geophysical Research Letters
ISSN: 0094-8553
EISSN: 1944-8284
出版年: 2013
卷: 40, 期: 18 起始页码: 4858
结束页码: 4863
语种: 英语
英文关键词: bed-load transport
; Colorado River
; fluvial geomorphology
; infrasound
; seismic noise
Scopus关键词: Bed-load transport
; Colorado River
; Fluvial geomorphology
; Infrasound
; Seismic noise
; Acoustics
; Floods
; Sediment transport
; Seismology
; acoustic wave
; bedload
; flood
; frequency analysis
; geomorphology
; land surface
; monitoring
; sediment transport
; seismic anisotropy
; seismic noise
; Arizona
; Colorado River [North America]
; Grand Canyon
; United States
英文摘要: As rivers transport water and sediment across Earth's surface, they radiate elastic and acoustic waves. We use seismic and infrasound observations during a controlled flood experiment (CFE) in the Grand Canyon to show that three types of fluvial processes can be monitored from outside the channel. First, bed-load transport under conditions of evolving bed mobility is identified as the dominant seismic source between 15 and 45 Hz. Two lower-frequency seismic bands also excited by the CFE exhibited greater power increases and are consistent with source processes related to fluid rather than sediment transport. The second fluvial seismic source is inferred to be fluid tractions on the rough riverbed, which drive the maximum seismic power increase at 0.73 Hz, but do not excite infrasound. Waves at the fluid-air interface are suggested as a third source, which generates a common 6-7 Hz peak in seismic and infrasound responses to the CFE. © 2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84884190701&doi=10.1002%2fgrl.50953&partnerID=40&md5=ca49135b90738a9dff46657ada298e6f
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5817
Appears in Collections: 气候减缓与适应
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作者单位: Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, NM 87131, United States
Recommended Citation:
Schmandt B.,Aster R.C.,Scherler D.,et al. Multiple fluvial processes detected by riverside seismic and infrasound monitoring of a controlled flood in the Grand Canyon[J]. Geophysical Research Letters,2013-01-01,40(18).