| DOI: | 10.1002/2015GL064811
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| 论文题名: | Estimating rates of debris flow entrainment from ground vibrations |
| 作者: | Kean J.W.; Coe J.A.; Coviello V.; Smith J.B.; McCoy S.W.; Arattano M.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8606
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| EISSN: | 1944-8337
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| 出版年: | 2015
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| 卷: | 42, 期:15 | | 起始页码: | 6365
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| 结束页码: | 6372
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| 语种: | 英语
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| 英文关键词: | debris flow
; deposition
; entrainment
; erosion
; geophone
; seismic
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| Scopus关键词: | Air entrainment
; Deposition
; Erosion
; Sediments
; Seismic waves
; Seismology
; Debris flows
; Direct measurement
; Entrainment rates
; Field constraints
; Field observations
; Geophone
; Orders of magnitude
; Seismic
; Debris
; debris flow
; deposition
; entrainment
; erosion
; estimation method
; geophone
; numerical model
; seismic wave
; seismology
; vibration
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| 英文摘要: | Debris flows generate seismic waves as they travel downslope and can become more dangerous as they entrain sediment along their path. We present field observations that show a systematic relation between the magnitude of seismic waves and the amount of erodible sediment beneath the flow. Specifically, we observe that a debris flow traveling along a channel filled initially with sediment 0.34 m thick generates about 2 orders of magnitude less spectral power than a similar-sized flow over the same channel without sediment fill. We adapt a model from fluvial seismology to explain this observation and then invert it to estimate the level of bed sediment (and rate of entrainment) beneath a passing series of surges. Our estimates compare favorably with previous direct measurements of entrainment rates at the site, suggesting the approach may be a new indirect way to obtain rare field constraints needed to test models of debris flow entrainment. ©2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84940448964&doi=10.1002%2f2015GL064811&partnerID=40&md5=e762faf715af61b40adb093154870012
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/8222
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| 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: | U.S. Geological Survey, Denver, CO, United States
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| Recommended Citation: | |
Kean J.W.,Coe J.A.,Coviello V.,et al. Estimating rates of debris flow entrainment from ground vibrations[J]. Geophysical Research Letters,2015-01-01,42(15).
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