%0 Journal Article %1 Balme2003 %A Balme, M. %A Metzger, S. %A Towner, M. %A Ringrose, T. %A Greeley, R. %A Iversen, J. %D 2003 %J Geophysical Research Letters %K imported %N 16 %P 1830 %T Friction wind speeds in dust devils: A field study %V 30 %X Using in-situ field measurements, we determined surface friction velocities (u(*)) and aerodynamic roughness heights (z(0)) at the base of 10 dust devils. z(0) values agree closely with previous studies in this region and range from 0.1 to 1.0 cm. The peak u(*) coincide with the largest wind speed measurements within the dust devil and range from 0.9 to 2.4 ms(-1). Surface friction velocities are sufficient to lift all types of windblown material from dust to pebble sized particles. Peak u(*) values for dust devils appear to be a linear function of the peak wind speed measured at similar to2 m height within the dust devil. This provides a simple approximation for estimating surface shear stress for dust devils.

@article{Balme2003, abstract = {Using in-situ field measurements, we determined surface friction velocities (u(*)) and aerodynamic roughness heights (z(0)) at the base of 10 dust devils. z(0) values agree closely with previous studies in this region and range from 0.1 to 1.0 cm. The peak u(*) coincide with the largest wind speed measurements within the dust devil and range from 0.9 to 2.4 ms(-1). Surface friction velocities are sufficient to lift all types of windblown material from dust to pebble sized particles. Peak u(*) values for dust devils appear to be a linear function of the peak wind speed measured at similar to2 m height within the dust devil. This provides a simple approximation for estimating surface shear stress for dust devils.}, added-at = {2009-11-03T20:21:25.000+0100}, author = {Balme, M. and Metzger, S. and Towner, M. and Ringrose, T. and Greeley, R. and Iversen, J.}, biburl = {https://www.bibsonomy.org/bibtex/21ebcce00b9f9f76da1613eedcd4e9b0e/svance}, citedreferences = {BAGNOLD RA, 1941, PHYSICS WINDBLOWN SA ; BIENER KK, 2002, LUNAR PLAN SCI, V23 ; CANTOR BA, 2002, EOS T AGU S, V83 ; EDGETT KS, 2000, LUNAR PLAN SCI, V31 ; FISHER J, 2002, EOS T AGU S, V83 ; FITZJARRALD DE, 1973, J APPL METEOROL, V12, P808 ; Greeley R, 1985, WIND GEOLOGICAL PROC ; Greeley R, 2003, J GEOPHYS RES, V108 ; HESS GD, 1990, J APPL METEOROL, V29, P498 ; HOUSER JG, 2003, GEOPHYS RES LETT, V30 ; KAHN RA, 1992, MARS ; KAIMAL JC, 1970, J APPL METEOROL, V9, P612 ; LANCASTER N, 1991, ACTA MECHANICA S, V2, P89 ; METZGER SM, 1999, GEOPHYS RES LETT, V26, P2781 ; METZGER SM, 1999, THESIS U NEVADA RENO ; METZGER SM, 2003, LUNAR PLAN SCI, V34 ; METZNER M, 1995, PRAKT TIERARZT, V76, P46 ; RYAN JA, 1970, J GEOPHYS RES, V75, P531 ; SCHWIESOW RL, 1975, APPL OPT RAPID COMMU, V15, P1 ; SINCLAIR PC, 1966, THESIS U ARIZONA TUC ; SULLIVAN R, 2000, J GEOPHYS RES, V105 ; WHITE BR, 1997, J GEOPHYS RES-PLANET, V102, P25629 ; YING SJ, 1970, J ATMOS SCI, V27, P3}, interhash = {e21a395d49c568ef1009b3dd3aff9454}, intrahash = {1ebcce00b9f9f76da1613eedcd4e9b0e}, journal = {Geophysical Research Letters}, keywords = {imported}, number = 16, owner = {svance}, pages = 1830, timestamp = {2009-11-03T20:21:38.000+0100}, title = {Friction wind speeds in dust devils: A field study}, volume = 30, year = 2003 }