%0 Journal Article %1 Collins2003 %A Collins, G. S. %A Melosh, H. J. %D 2003 %J Journal of Geophysical Research-Solid Earth %K EARTHQUAKES; LANDSLIDES; MARINERIS; MARS; MASS MOVEMENTS; ROCKFALLS; SCATTERING; SEPARATION; SOILS VALLES %N B10 %P 2473 %T Acoustic fluidization and the extraordinary mobility of sturzstroms %V 108 %X 1 Sturzstroms are a rare category of rock avalanche that travel vast horizontal distances with only a comparatively small vertical drop in height. Their extraordinary mobility appears to be a consequence of sustained fluid-like behavior during motion, which persists even for driving stresses well below those normally associated with granular flows. One mechanism that may explain this temporary increase in the mobility of rock debris is acoustic fluidization; where transient, high-frequency pressure fluctuations, generated during the initial collapse and subsequent flow of a mass of rock debris, may locally relieve overburden stresses in the rock mass and thus reduce the frictional resistance to slip between fragments. In this paper we develop the acoustic fluidization model for the mechanics of sturzstroms and discuss the conditions under which this process may sustain fluid-like flow of large rock avalanches at low driving stresses.

@article{Collins2003, abstract = {[1] Sturzstroms are a rare category of rock avalanche that travel vast horizontal distances with only a comparatively small vertical drop in height. Their extraordinary mobility appears to be a consequence of sustained fluid-like behavior during motion, which persists even for driving stresses well below those normally associated with granular flows. One mechanism that may explain this temporary increase in the mobility of rock debris is acoustic fluidization; where transient, high-frequency pressure fluctuations, generated during the initial collapse and subsequent flow of a mass of rock debris, may locally relieve overburden stresses in the rock mass and thus reduce the frictional resistance to slip between fragments. In this paper we develop the acoustic fluidization model for the mechanics of sturzstroms and discuss the conditions under which this process may sustain fluid-like flow of large rock avalanches at low driving stresses.}, added-at = {2009-11-03T20:21:25.000+0100}, author = {Collins, G. S. and Melosh, H. J.}, biburl = {https://www.bibsonomy.org/bibtex/286c0ee4281ca234e14ba7a76402d60a4/svance}, citedreferences = {AMSDEN AA, 1980, LA8095 LOS AL NATL L ; BAGNOLD R, 1956, P R SOC LONDON SER A, V225, P49 ; BAGNOLD RA, 1966, US GEOL SURV PROF I, V422, P1 ; BARKAN D, 1962, DYNAMICS BASES FDN ; BRUNE JN, 1993, TECTONOPHYSICS, V218, P59 ; CAMPBELL CS, 1990, ANNU REV FLUID MECH, V22, P57 ; CAMPBELL CS, 1995, J GEOPHYS RES-SOLID, V100, P8267 ; CARSON MA, 1972, HILLSLOPE FORM PROCE ; CHUANG FC, 2000, J GEOPHYS RES-PLANET, V105, P20227 ; DADE WB, 1998, Geology, V26, P803 ; DAINTY AM, 1977, J GEOPHYS, V43, P375 ; ERISMANN TH, 1979, ROCK MECH, V12, P15 ; FINEBERG J, 1997, Nature, V386, P323 ; FRANKEL A, 1987, B SEISMOL SOC AM, V77, P1223 ; GAFFNEY ES, 1982, J GEOPHYS RES, V87, P1871 ; GOGUEL J, 1978, ROCKSLIDES AVALANCHE, V1, P693 ; HEIM A, 1882, DTSCH GEOL GESELL Z, V34, P74 ; HOWARD KA, 1973, Science, V180, P1052 ; HSU KJ, 1975, GEOL SOC AM BULL, V86, P129 ; IVERSON RM, 1997, ANNU REV EARTH PL SC, V25, P85 ; JAEGER HM, 1992, Science, V255, P1523 ; JAEGER JC, 1969, FUNDAMENTALS ROCK ME ; KANAMORI H, 1994, ANNU REV EARTH PL SC, V22, P207 ; LAMBE TW, 1979, SOIL MECH ; LUCCHITTA BK, 1978, GEOLOGICAL SOC AM B, V89, P1601 ; LUCCHITTA BK, 1979, J GEOPHYS RES, V84, P8097 ; MALIN MC, 1992, J GEOPHYS RES-PLANET, V97, P16337 ; MCEWEN AS, 1989, Geology, V17, P1111 ; MCSAVENEY MJ, 1978, ROCKSLIDES AVALANCHE, V1, P197 ; MELOSH HJ, 1979, J GEOPHYS RES, V84, P7513 ; MELOSH HJ, 1983, AM SCI, V71, P158 ; MELOSH HJ, 1987, DEBRIS FLOWS AVALANC, P41 ; MELOSH HJ, 1995, EOS T AGU S, V76, F270 ; MELOSH HJ, 1996, Nature, V379, P601 ; Reynolds O, 1885, PHILOS MAG 5, V20, P469 ; RICHARDS R, 1990, J GEOTECH ENG-ASCE, V116, P740 ; RODGER AA, 1980, GEOTECHNIQUE, V30, P269 ; SCHENK PM, 1998, Science, V279, P1514 ; SHALLER PJ, 1991, THESIS CALTECH PASAD ; SHINGAREVA TV, 2001, LUNAR PLANET SCI C, V32 ; SHREVE RL, 1968, SPEC PAP GEOL SOC AM, V108, P47 ; ZIK O, 1992, EUROPHYS LETT, V17, P315}, interhash = {607e2f4e75ad9c5cbd61b05bb11454c6}, intrahash = {86c0ee4281ca234e14ba7a76402d60a4}, journal = {Journal of Geophysical Research-Solid Earth}, keywords = {EARTHQUAKES; LANDSLIDES; MARINERIS; MARS; MASS MOVEMENTS; ROCKFALLS; SCATTERING; SEPARATION; SOILS VALLES}, number = {B10}, owner = {svance}, pages = 2473, timestamp = {2009-11-03T20:21:43.000+0100}, title = {Acoustic fluidization and the extraordinary mobility of sturzstroms}, volume = 108, year = 2003 }