Submissions by Ron Perla Photo collection
Optimal probing for avalanche victims
Perla, R.I., 1967. Alta Avalanche Study Center Miscellaneous report 13, USDA Forest Service
Mechanical properties of the soft slab
LaChapelle, E.R., Perla, R.I., 1967. Alta Avalanche Study Center, Project 8, Report 2
Strength tests on newly fallen snow
Perla, R.I., 1969. USDA Forest Service Research Note RM-150.
Modern Avalanche Rescue - Snow Safety Guide Number 1
Perla, R.I., 1968. USDA Forest Service, Alta Avalanche Study Center.
Some index properties of the mountain snowpack
Perla, R.I., undated.
Guide to collection of references, abstracts, and books on snow and avalanches
Perla, R.I., 1971. Alta Avalanche Study Center, USDA Forest Service, Wasatch National Forest.
Proceedings of the Snow and Ice in Relation to Wildlife and Recreation Symposium
1971, Iowa State University, Memorial Union, Ames, Utah, 22 pp.
Perla, R.I., Martinelli, M., Jr., 1976. USDA Forest Service Agriculture Handbook 489, 241 p.
Slab avalanche measurements, with appendix of data
Perla, R.I., 1977. Slab avalanche measurements. Canadian Geotechnical Journal 14, 206-?.
Snow Avalanche Research in Canada.
Perla, R.I., 1979. Draft of a report to serve as background material for Canada Water Yearbook, Chapter 4, research on water quality management.
Snow structure and metamorphism
Perla, R.I., 1983. Notes for the National Avalanche School, Reno, November 1983.
Perla, R.I., 1978. Snow crystals, NHRI paper no. 1.
Perla, R.I., 1983. The Avalanche Review, 1(4).
Snow microstructure measurements usng stereology
Dozier, J., Davis, R.E. Perla, R.I., 1985. Presented at Workshop on Snow property Measurement, Chateau Lake Louise, April 1-3, 1985.
Ed LaChapelle, Banquet speech by Ron Perla
Perla, R.I., 1991. Banquet talk presented at Presented at Snow Science: reflections on the past, perspectives on the future. A symposium at Snowbird, Utah, April 20, 1991, honoring Ed LaChapelle and Binx Sandahl.
Five problems in avalanche research
Perla, R.I., 1991. Presented at Snow Science: reflections on the past, perspectives on the future. A symposium at Snowbird, Utah, April 20, 1991, honoring Ed LaChapelle and Binx Sandahl.
List of Ron Perla's publications
Compiled by Simon Ommanney, 1993..
Ron Perla's banquet speech from ISSW 1994 in Snowbird, Utah
Sept 2016 essay by Ron Perla about Art Judson, who resides in Arvada, Colorado.
Perla, R.I., Beck, T., Banner, J., 1978, Impact force of snow, NHRI paper no. 2
PLK avalanche dynamics model The PLK model is described in Perla, R.I., K. Lied and K. Kristensen. 1984. Particle simulation of snow avalanche motion. Cold Regions Science of Technology 9, 191- 202.
Download the zip file and extract PLK.exe, readme.txt, and a sample input file (parab.txt) for PLK 2002.
This model and documentation are provided without any implied merit for any purpose, or technical support.
Snow avalanches of the Wasatch Front.
Chapter O of Environmental Geology of the Wasatch Front. Utah Geological Association Publication 1-O, 1972.
Q3D - Quasi 3-dimensional model of snow avalanche dynamics. Download the folder with two ReadMe files and two Excel macro files Or download the individual files ReadMeFirst.pdf, ReadMeNext.pdf, the two Excel macro files q3dSample.xlsm and q3dTemplate.xlsm to a folder and start with ReadMeFirst.pdf. April 2024. For the Excel macro files, you may need to enable editing as well as enable macros. This model and documentation are provided without any implied merit for any purpose, or technical support.