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Browsing items in: Alta Avalanche

(46 results)



Display: 100

    • A Primer for the Avalanche Dog Leader

    • An overview of the selection and training of dogs for avalanche rescue duties
    • Avalanches--Search and rescue operations; Search and rescue operations--Handbooks, manuals, etc.; Dogs--Training--Handbooks, manuals, etc;
    • A Tabulation of Snow Avalanche Fatalities in Colorado

    • Using the data available at the Denver Post and more recent data of the Forest Service, this report is a tabulation of avalanche fatalities which have occurred in Colorado. The writer has a feeling that this tabulation is not complete, especially...
    • Avalanches; Avalanches--Accidents;
    • A Tabulation of Snow Avalanche Fatalities in Colorado

    • A revised tabulation which supersedes the original tabulation dated September 1965. The original tabulation shared the same title as this report, and was Miscellaneous Report No. 8 from the Alta Avalanche Study Center.
    • Avalanches; Avalanches--Accidents;
    • A Technique for Forecasting the Rate of Snowfall at Alta, Utah

    • A study was initiated at Alta, Utah, in which rather detailed weather observations were taken during storms in order to study winter storm characteristics and their relationship to snowfall and other meteorological parameters at Alta. These...
    • Avalanches--Forecasting; Snowfall; Winter storms; Weather forecasting
    • Alta Avalanche Control and Safety Plan

    • In the interest of efficient and effective handling of avalanche problems which could affect public safety, the United States Forest Service has developed this Avalanche Control and Safety Plan. Not the final answer for any given set of conditions,...
    • Avalanches--Control--Utah; Avalanches--Safety measures;
    • Avalanche Forces and the Protection of Objects

    • This contribution is addressed primarily to the practical man who comes into contact with the problems of avalanche effects on structures in the course of his professional work in the mountains. An attempt is made to estimate avalanche forces by...
    • Avalanches; Snow mechanics;
    • Avalanche Handbook

    • This handbook has been prepared primarily for the guidance of Forest Officers concerned with the safety of skiers using winter sports areas within the national forests. It discusses the various phases of avalanche hazard evaluation and control in...
    • Avalanches--Handbooks, manuals, etc.;
    • Encounter Probabilities for Avalanche Damage

    • An analysis of the exposure of various commercial and industrial activities to avalanche danger and of the determination of an acceptable level of risk for such activities. Miscellaneous Report No. 10, 11p.
    • Avalanches; Snow;
    • Introduction to Snow Avalanches

    • This is an introduction for the Russian translation of "Snow Avalanches". This book was published by the Forest Service of the Department of Agriculture of the U.S.A. In it are given accounts of the methods of forecasting avalanches which are...
    • Avalanches; Snow;
    • Man-Made Nominal Wind Action Area

    • In some areas where snow studies are being carried on, achieving a representative area for collecting and recording snowfall data is extremely difficult. The difficulty arises when the data are collected at or above timberline where high winds...
    • Avalanches; Snow; Berthoud Pass (Colo.); Wind-snow interaction;
    • Man-Made Nominal Wind Action Area Part II (Winter 1962-63)

    • This report discusses a continuation of experiments first described in Miscellaneous Report No. 3: "Man-Made Nominal Wind Action Area," published in June, 1962. This report compared precipitation observed with an unshielded precipitation gauge and...
    • Avalanches; Snow; Wind-snow interaction;
    • Mechanical Properties of the Soft Slab

    • Measurement of the mechanical properties of newly deposited snow are needed to supplement meteorological data and improve upon the predictability of soft slab release. 15 p.
    • Avalanches; Snow; Snow surveys;
    • Meterological Classification of Natural Snow Crystals

    • From a meteorological point of view, Nakaya's classification of natural snow crystals was modified and supplemented. By this improvement of the classification, the certain inconveniences in the description of crystal shapes of natural snow crystals...
    • Snow; Snow mechanics;
    • Method of Measuring Mean Temperatures in the Field

    • Many aspects of microclimate (avalanche control, reforestation, timberline ecology, fire conditions) can be studied to best advantage if mean air and soil temperatures are available for many different sites in a given locality. Ordinary methods of...
    • Avalanches; Snow; Snow surveys;
    • Modern Avalanche Rescue

    • Discusses recommended pre-accident planning and introduces a three-stage rescue approach for avalanche victims.
    • Avalanches--Search and rescue operations; Search and rescue operations--Handbooks, manuals, etc.;
    • On Snow Cover Ablation

    • The two processes of evaporation and melting can cause the ablation of a snow or ice layer. This discussion will elucidate the various possible combinations of these processes.
    • Snow mechanics;
    • On the Destructive Force of Avalanches

    • The avalanche catastrophes of the past years have caused various devastating effects in places where, within the memory of man, no destructive avalanches have occurred. Repeatedly the question arises under what conditions and to what extent are the...
    • Avalanches;
    • Optimum Probing for Avalanche Victims

    • The technological problems connected with the development of a "wonder searching instrument" are immense. Until science presents us with this instrument we must use classical search devices. At present, the avalanche dog and the avalanche probe are...
    • Avalanches--Search and rescue operations;
    • Reforestation in the Austrian Alps

    • A brief history of the causes of deforestation in the Austrian Alps and an examination of the techniques now being employed by the Austrian government to halt and reverse deforestation and to limit avalanche danger.
    • Avalanches--control; Deforestation--Control--Austria;
    • Snow and Avalanche Conditions at Mt. Baldy, California

    • The winter recreation area of Mt. Baldy presents some unusual snow, weather and avalanche conditions. The snow ranger's task of insuring public safety on this part of the Angeles National Forest is compounded by the proximity of the huge Los...
    • Avalanches; Mount Baldy (Calif.);
    • Snow and Snow Avalanches

    • Observations made between 1933 and 1941 at an experimental station of the Kirov Railway, Murmansk, have been taken as the basis of this work. The purpose of these observations was to investigate the conditions causing snowslides and to explain the...
    • Avalanches; Snow--Soviet Union;
    • Snow Layer Densification

    • This present progress report summarizes some of the snow density data currently available at the Alta Avalanche Study Center. It will be followed by additional reports in the near future as more information is gathered from other stations and...
    • Avalanches; Snow mechanics;
    • Stability of Snow Slabs

    • The comparison of stresses in the weakest layer with the corresponding critical curve in the mohr plane leads to a definition of primary stability. Investigation of this definition as a function of slope angle and distributed load, shows it to be...
    • Avalanches; Snow mechanics;
    • The Density Distribution of New Snow

    • This report sets forth, mainly in graphic form, the density values of 24-hour snowfalls as recorded at several avalanche study sites in the conterminous United States and Alaska. Investigation of the records was originally initiated to answer the...
    • Avalanches; Snow mechanics; Snow surveys;
    • The Formation Rate of Depth Hoar

    • It is the object of this report to consider the physical and climatic factors influencing constructive metamorphism, which leads to depth hoar and mechanically weak snow.
    • Avalanches; Snow mechanics; Depth hoar; Crystal growth;
    • The Werner-Henneberger Accident

    • Each year the Swiss Federal Institute for Snow and Avalanche Research compiles a comprehensive report on snow and avalanches in the Swiss Alps. This report is published about a year and a half after the winter in question. From the report for the...
    • Avalanches--Accidents--Switzerland; Werner, Buddy, 1936-1964; Henneberger, Barbara;
    • Typical Alta Fracture Line Profiles

    • The regular examination of stratigraphy in pits dug periodically in a snow study plot is a standard part of our hazard forecasting technique. In order to apply the information so gained to hazard evaluation on avalanche paths, it is necessary to...
    • Avalanches; Snow mechanics;

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