Snow Avalanche Archive, updated September 2019.

Perla, R.I., 1967. Alta Avalanche Study Center Miscellaneous report 13, USDA Forest Service

LaChapelle, E.R., Perla, R.I., 1967. Alta Avalanche Study Center, Project 8, Report 2.

Perla, R.I., 1969. USDA Forest Service Research Note RM-150.

Perla, R.I., 1968. USDA Forest Service, Alta Avalanche Study Center.

Perla, R.I., 1971. Alta Avalanche Study Center, USDA Forest Service, Wasatch National Forest.

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.

Perla, R.I., 1977. Slab avalanche measurements. Canadian Geotechnical Journal 14, 206-?.

Perla, R.I., 1979. Draft of a report to serve as background material for Canada Water Yearbook, Chapter 4, research on water quality management.

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).

Dozier, J., Davis, R.E. Perla, R.I., 1985. Presented at Workshop on Snow property Measurement, Chateau Lake Louise, April 1-3, 1985.

Perla, R.I., 1991. Banquet talk presented at Presented at Snow Science: reflections on the past, prespectives on the future. A symposium at Snowbird, Utah, April 20, 1991, honoring Ed LaChapelle and Binx Sandahl.

Perla, R.I., 1991. Presented at Snow Science: reflections on the past, prespectives on the future. A symposium at Snowbird, Utah, April 20, 1991, honoring Ed LaChapelle and Binx Sandahl.

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

Notes on Ron Perla's Q3D model and input, output worksheets, October 2017.

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.

Follow the link to the zip file containing the executable (PLK.exe), readme.txt, and a sample input file (parab.txt) for PLK 2000.

This model and documentation are provided without any implied merit for any purpose, or technical support. 

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Submissions by Ron Perla