DOI: 10.1002/2014GL062470
论文题名: A mixture of crushing and segregation: The complexity of grainsize in natural granular flows
作者: Marks B. ; Einav I.
刊名: Geophysical Research Letters
ISSN: 0094-9027
EISSN: 1944-8758
出版年: 2015
卷: 42, 期: 2 起始页码: 274
结束页码: 281
语种: 英语
英文关键词: avalanches
; comminution, mixing, landslides
; fault gouge
; granular flow
; segregation
Scopus关键词: Avalanches (snowslides)
; Confined flow
; Crushing
; Grinding (comminution)
; Mixing
; Segregation (metallography)
; Dense granular flows
; Depth dependents
; Fault gouge
; Granular flows
; Lattice modeling
; Log-normal distribution
; Power law distribution
; Pyroclastic flows
; Granular materials
; earthquake event
; flow modeling
; grain size
; granular medium
; natural hazard
; sieving
英文摘要: The interplay between grain crushing and segregation controls the dynamics of dense granular flows that underpin many natural hazards. We address this issue for the first time by developing a simple lattice model with three interacting rules - for grain crushing, mixing, and segregation. In earthquake faults, particles are trapped, they crush and mix, but do not segregate. In this case the model produces power law distributions, consistent with previous models. When segregation by kinetic sieving is added to the model, we predict depth-dependent lognormal distributions as previously observed, but not explained, in pyroclastic flows, debris flows, rock avalanches, and dry snow avalanches. © 2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84923630963&doi=10.1002%2f2014GL062470&partnerID=40&md5=d0d9d94d9a27a1891b7629fa3db5f746
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8643
Appears in Collections: 科学计划与规划 气候变化与战略
There are no files associated with this item.
作者单位: Condensed Matter Physics, Department of Physics, University of Oslo, Oslo, Norway
Recommended Citation:
Marks B.,Einav I.. A mixture of crushing and segregation: The complexity of grainsize in natural granular flows[J]. Geophysical Research Letters,2015-01-01,42(2).