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INTERNATIONAL SYMPOSIUM ON SNOW AND AVALANCHES

CO-SPONSORED BY

Swiss Federal Institute for Snow and Avalanche Research (SLF)


PROGRAMME OF SESSIONS

   Monday 2 June
Tuesday 3 June
Wednesday 4 June
Thursday 5 June
Friday 6 June

Corrections will be posted outside the Sanada auditorium each day.

Numbers in the third column refer to abstract numbers

Sessions will take place in the International Congress Centre,
Promenade 92, CH-7270 Davos-Platz, Switzerland


SUNDAY 1 JUNE 2003

17:00-19:00

REGISTRATION  (International Congress Centre, Congress Hall)         

18:00-19:00

ICEBREAKER  (International Congress Centre, Foyer C1) 


MONDAY, 2 JUNE 2003

Opening of Symposium

08:30

Dr Atsumu Ohmura (Vice President, IGS)

 

Dr Walter Ammann (Chairman, Local Organizing Committee)

 

Dr Paul Föhn (Chief Editor)

Session 1: Physical snow properties

08:50

U. Leeman and M. Albert

3

Snow microstructure and permeability in the near-surface core at a potential deep drilling site in West Antarctica

09:10

J.R. Blackford, B.A. Marmo and C.E. Jeffree

74

Low temperature scanning electron microscopy of snow

09:30

J. Schweizer, G. Michot and H.O.K. Kirchner

41

On the fracture toughness of snow

09:50

E.C.J. Hendriks, J.W. Greuell, J. Oerlemans, W. Knap and P. Stammes

129

Anisotropy of the reflected radiation on a snow surface: ground measurements and simulation


10:10

Refreshments

Session 2: Avalanche formation

10:40

S. Senthil and P. Mahajan

18

Avalanche initiation: a finite element study

11:00

P. Chernouss, E. Mokrov, Y. Fedorenko, E. Husebye and E. Beketova

132

Effect of explosions on snow stability on mountain slope

11:20

A. Mishra, D.N. Sethi and A. Upadhyay

21

A failure criterion of snow on the basis of time to failure and its validation at critical strain-rate

11:40

M. Zaiser

29

Slab avalanche release viewed as interface fracture in a random medium

12:00

U. Gruber, P. Hägeli, D.M. McClung and E. Manners

26

Large-scale snow instability patterns in western Canada: first analysis of the CAA-InfoEx database 1991-2002


12:20

Lunch

Session 3: Snow cover

14:00

S.A. Sokratov and M. Schneebeli

109

Thermophysical and microstructural evolution of snow during temperature gradient metamorphism

14:20

F. Flin, J.-B. Brzoska, B. Lesaffre, C. Coléou and R.A. Pieritz

123

3-D geometric measurements of snow micro-structural evolution under isothermal conditions

14:40

T. Yamamoto, K. Matsuoka and R. Naruse

50

Observation of internal structures of snow covers with a ground-penetrating radar

15:00

P.A. Waldner, M. Stähli, M. Lehning, M. Schneebeli and M. Schwikowski

126

Modelling ionic transport in a layered subalpine snow cover with the model SNOWPACK

15:20

V.N. Golubev and S.A. Sokratov

133

Regular packing of grains as a model of snow structure


15:40

Refreshments

Session 4: Avalanche processes

16:10

C. McCollister, K. Birkeland and K. Hansen

91

Exploring the spatial variability of hard slab and dry loose avalanches, Jackson Hole, Wyoming, U.S.A.

16:30

J. Porhemmat and B. Saghafian

8

Evaluation of spatial resolution of satellite data on snow cover estimates

16:50

R. Rice, Jr and R.A. Decker

28

Using unsteady hydraulic analogs to model waves, and short lived peak velocities and peak impact loads associated with snow avalanches

17:10

Ph. Berthet-Rambaud, J.-M. Taillandier, A. Limam, J. Mazars and L. Daudeville

43

Characterising the action of a snow avalanche through the analysis of metal target's behaviour

17:30

A. Bouchet, M. Naaim, H. Bellot and F. Ousset

66

Experimental study of dense snow avalanches: velocity profiles in quasi-permanent and fully-developed flows

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TUESDAY, 3 JUNE 2003

Session 5: Snow drifting and blowing snow

08:30

R. Bintanja

15

The mass balance of a dry snow surface during snow storm

08:50

J.N. McElwaine, N. Maeno and K. Sugiura

92

The splash function for snow from wind-tunnel measurements

09:10

K. Nishimura and M. Nemoto

52

Blowing snow at Mizuho station, Antarctica

09:30

A. Ghinoi and C.-J.F. Chung

36

Topography-driven snow avalanche susceptibility

09:50

T. Sato, K. Kosugi and A. Sato

122

Development of saltation layer of drifting snow


10:10

Refreshments

Session 6: Avalanche-risk management

10:40

D.M. McClung

19

Return period of avalanches far into the runout zone

11:00

F. Rapin, M. Meunier and R. Bolognesi

117

New method for classification of avalanche paths with risks

11:20

J.-P. Navarre, J. Roulle and J.M. Panel

78

Automatic seismic detection of natural avalanches: operational running, analysis and recognition of signals and results

11:40

S. Margreth and W.J. Ammann

102

Hazard scenarios for avalanche actions on bridges


12:00

Lunch

Session 7: Snow properties and measurement

14:00

R. Fortin, N.K. Sinha and F. Anctil

127

Characterization of the microstructure of snow with TDR

14:20

A.K. Singh and V. Deo

136

PC based data acquisition system for thermal conductivity measurement of snow

14:40

R.A. Pieritz, J.-B. Brzoska, F. Flin, B. Lesaffre and C. Coléou

80

From snow X-ray microtomograph raw volume data to micromechanics modeling: first results


15:00

Refreshments

Poster Session 1. Short presentations

15:30

R.V. Engeset, H.-C. Udnæs, O.E. Tveito, E.J. Førland, K. Isaksen, Z. Mengistu and N.R. Raabel

5

A statistical–physical snow model: daily point simulations for Norway 1961-2002

15:32

J. Oerlemans and E.J. Klok

7

Effect of summer snowfall on glacier mass balance

15:34

N.A. Kazakov

11

Fractal dimension of the snow cover texture

15:36

B. Boutillier, F. Nicot, J. Meyssonnier, O. Gagliardini and F. Darve

16

Snow creep: application to a snowpack in interaction with a flexible supporting structure

15:38

E. Hestnes and S. Bakkehøi

20

Slushflow hazard prediction and warning

15:40

R. Kor and A. Ganju

22

Mapping and forecasting of avalanches in western Himalaya using GIS

15:42

S. Rasmus and M. Lehning

24

SNOWPACK model validation in Finland: sensitivity and parameterisation

15:44

Y. Durand, G. Guyomarc'h, L. Mérindol and J.G. Corripio

25

2-D numerical modelling of surface wind velocity and associated snow drift effects over complex mountainous orography

15:46

J. Schönbein, C. Schneider and R. Roth

31

Snow cover variability in German Low Mountain ranges under the influence of climate change

15:48

C. Huggel, A. Kääb, N. Salzmann, W. Haeberli, A. Polkvoj, I. Zotikov and N. Osokin

32

Remote sensing and GIS-based models for rock and ice avalanches and their application to the 20 September 2002 rock/ice avalanche at Kolka glacier (North Osetia, Russian Caucasus)

15:50

Yu.B. Andreev and L.A. Sukhanov

37

The comparison of risk assessment based on empirical probability zoning model (Russia) and some statistical models by West European researchers for avalanche encounter probability

15:52

A. Felber, J. Heierli, J. Kowalski and R.S. Purves

38

What do the results of nearest neighbours models mean in avalanche forecasting?

15:54

A. Cagnati and 11 others

39

The microwave alpine snow melting experiment (MASMEX 2002)

15:56

A. Cagnati, M. Valt, R. Casacchia and R. Salvatori

40

Physical and morphological features of snowcover surface layers in Antarctica

15:58

R. Nitta

44

Insight to snow and avalanche considering disturbances to forest growth

16:00

E. Alfnes, L.M. Andreassen, R.V. Engeset, T. Skaugen and H.-C. Udnæs

45

Temporal variability in snow distribution

16:02

K. Rikiishi and J. Sakakibara

46

Seasonal changes of the snow cover extent in the former Soviet Union as seen from the historical snow-depth observations

16:04

M. Barbolini, F. Cappabianca and F. Savi

48

Risk assessment in avalanche prone areas

16:06

H. Hirashima, E. Baba, A. Hachikubo, K. Nishimura and M. Lehning

51

SNOWPACK model calculations of snow in Hokkaido, Japan

16:08

I. Takei and N. Maeno

54

Mechanical vibration responses of snow samples near the melting temperature

16:10

K. Sugiura, T. Ohata and D. Yang

57

Particle size near the snow surface in drifting snow with periods of inactivity in the Arctic, Barrow, Alaska

16:12

P. Mathur and V.D. Mishra

58

Determination of snow-cover characteristics using a reflectance model measured from satellite remote sensing and ground based spectral information

16:14

A. Mishra and P. Mahajan

59

A new constitutive law for snow taking into account the volumetric changes under different confinements

16:16

B.C. Johnson and B. Jamieson

60

Investigations into remotely triggered slab avalanches

16:18

T. Oksanen

61

Observed changes in snow cover properties during last 50 years in Finland

16:20

E. Kärkäs

63

The surface snow properties in western Dronning Maud Land, Antarctica

16:22

T. Faug, M. Naaim and F. Naaim-Bouvet

64

Experimental and numerical study of granular flow and fence interaction

16:24

I. Moner and 7 others

67

Cartographic Avalanche Forecasting (CAF): a GIS-supported aid and representation tool

16:26

J.N. McElwaine

69

Calculation of two-dimensional avalanche velocities from opto-electronic sensors

16:28

R. Molina and 7 others

70

Using vegetation to characterize the avalanche of Canal del Roc Roig, Vall de N·ria (eastern Pyrenees, Spain)

16:30

A. Zeidler and B. Jamieson

73

A nearest neighbor model for forecasting skier-triggered dry slab avalanches on persistent weak layers in the Columbia Mountains of Canada

16:32

E. Muntán, L. Andreu, P. Oller, E. Gutiérrez and P. Martínez

75

Dendrochronological study of the avalanche path Canal del Roc Roig: first results of the ALUDEX project in the Pyrenees

16:34

T. Skaugen, E. Alfnes, E.G. Langsholt and H.-C. Udnæs

81

Time variant snow distribution for use in hydrological models


16:40

POSTERS

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WEDNESDAY, 4 JUNE 2003

Session 8: Snow and ice

08:30

B. Jamieson and C. Fierz

33

Heat flow from wet to dry snowpack layers and associated faceting

08:50

Y. Ito, K. Nishimura, Y. Nohguchi, K. Izumi, O. Abe and K. Kosugi

90

Airflow measurements in the snow avalanche flow

09:10

J. Pomeroy, R. Essery and B. Toth

71

Implications of spatial distributions of snow mass and melt rate on snowcover depletion: observations in a sub-Arctic mountain catchment

09:30

F. Obleitner and M. Lehning

128

Measurements and simulations of snow and superimposed ice at the Kongsvegen glacier, Svalbard

09:50

P. Etchevers and 22 others

79

Validation of the surface energy budget simulated by several snow models (SNOWMIP project)


10:10

Refreshments

Session 9: Snow properties and avalanche formation

10:40

P. Hägeli and D.M. McClung

14

Hierarchy theory as a conceptual framework for scale issues in avalanche forecasting modeling

11:00

K. Kronholm and M. Schneebeli

103

Micromechanical properties in snow layers on a small slope

11:20

C. Roeger, D. McClung and R. Stull

42

Verified combination of numerical weather and avalanche prediction models at Kootenay Pass, British Columbia, Canada

11:40

K. Birkeland, K. Kronholm, M. Schneebeli and C. Pielmeier

27

Temporal changes in the shear strength and hardness of a buried surface hoar layer


12:00

Lunch



13:30 - 19:00

EXCURSION 


Bus drive to Flüelpass (permafrost)
Bus drive to “Alpenrose" (avalanche zoning problems)
Walk to “Bunker" laboratory (snowdrift)
Walk to SLF (various presentations)
Return to Congress Centre by public bus




20:00

Meeting for members of IGS Council

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THURSDAY, 5 JUNE 2003

Session 10: Snow-cover monitoring and remote sensing

08:30

N. Foppa, S. Wunderle, A. Hauser, D. Oesch and F. Kuchen

53

Operational subpixel snow mapping over the Alps with NOAA-AVHRR data

08:50

K. Rikiishi, E. Hashiya and M. Imai

47

Linear trends of the length of snow cover season in the Northern Hemisphere as observed by the satellites in recent 28 years

09:10

M. Sturm and C. Benson

142

Contrasts in the spatial heterogeneity of perennial and seasonal snow layers

09:30

S. Rasmus, J. Räisänen and M. Lehning

23

Estimating snow conditions in Finland in the late 21st century using the SNOWPACK model with regional climate scenario data as input

09:50

R. Essery and J. Pomeroy

77

Implications of spatial distributions of snow mass and melt rate on snowcover depletion: theoretical considerations


10:10

Refreshments

Session 11: Snow cover and meltwater

10:40

M. Stacheder, S. Schlager, A. Brandelik and M. Norgren

150

A new in-situ sensor for large-scale snow cover monitoring: I. Principle, design, and air gap correction

11:00

C.E. Bøggild

100

Melt water retention in seasonal snow at the Greenland ice sheet margin

11:20

I. Meirold-Mautmer and M. Lehning

105

Measurements and model calculations of the solar shortwave fluxes in snow on Summit/Greenland


11:40

International Glaciological Society AGM - agenda as PDF file


12:00

Lunch

Session 12: Avalanche-risk management

14:00

T. Arnalds, K. Jónasson and S. Sigurdsson

72

Avalanche hazard zoning in Iceland based on individual risk

14:20

M. Bründl, C. Klingler, M. Steiniger, J. Rhyner and W. Ammann

93

IFKIS — managing avalanche risk in settlements and on roads

14:40

D. Issler and 11 others

49

Simulations of observed dry-snow avalanches in the full-scale test site Ryggfonn, Norway


15:00

Refreshments

Poster Session 2. Short presentations

15:30

H. ólafsson, M. de Vries, S.H. Haraldsdóttir and M.M. Magnússon

83

Observations of accumulation of snow in the central Icelandic highlands

15:32

K. Izumi, S. Kobayashi, M. Nemoto, K. Yano, Y. Endo and Y. Ohzeki

84

Snow avalanche accidents in Japan for the past one hundred years (1900–1999)

15:34

K. Hiramatsu

85

Snow crystals in the classroom

15:36

T. Glazovskaya, Y. Seliverstov and E. Troshkina

86

Snow avalanches of Russian Caucasus

15:38

H. Cara

87

Disposition model for avalanche starting zones. Studies in the Drau catchment, South Tyrol

15:40

S. Yamaguchi, A. Sato and M. Lehning

88

Application of the numerical snowpack model (SNOWPACK) to the wet snow region in Japan

15:42

S. Bethke, M. Lehning and H. Rhyner

97

Predicting snow conditions for the optimisation of ski racing equipment and piste preparation

15:44

A. Casteller, V. Stoeckli and R. Villalba

99

Evaluation of dendroecological methods to recon-struct temporal and spatial patterns of avalanche events in undocumented mountainous areas

15:46

T. Exner, J.D. Rüedi, M. Connolly and M. Lehning

104

A wind tunnel for investigations of the natural snow cover: first results on sublimation rates and thresholds for drifting snow

15:48

S. Fuchs, M. Bründl and J. Stötter

106

Multitemporal risk assessment for avalanche hazards: results from settlements in Grisons, Switzerland

15:50

G. Spreitzhofer, C. Fierz and M. Lehning

108

SN_GUI: a graphical user interface for snowpack modeling

15:52

R. Meister

111

Snow climate and avalanche activity in Davos — the 20th century overview

15:54

M. Schneebeli

113

Numerical simulation of elastic stress in the microstructure of snow

15:56

K. Kosugi, T. Sato and A. Sato

115

Dependence of drifting snow saltation lengths on snow surface hardness

15:58

T. Ozeki, K. Kose, T. Haishi and K. Nishimura

116

Three-dimensional observation of depth hoar layer by NMR imaging

16:00

Li Jun and H.J. Zwally

118

Modeling the density variation in the shallow firn layer

16:02

C. Scapozza, F. Bucher, P. Amann, W. Ammann and P. Bartelt

120

The temperature and density dependent acoustic emission response of snow in axial shear tests

16:04

N. Imanishi, T. Moriya, T. Yamada and K. Nishimura

121

Observations of the seismic signals associated with snow avalanches

16:06

M. Ishizaka

124

Climatic response of snow depth at heavy snowfall areas in Japan to recent warmer winter seasons

16:08

H. Grimsdóttir and D.M. McClung

125

Avalanche risk management in backcountry skiing operations

16:10

K. Rasmus and S. Rasmus

130

Snow albedo measurements during ablation period in Finnish tundra

16:12

P. Chernouss and B. Kozelov

131

LAVINA-2 - a computer-assisted work place for avalanche forecaster

16:14

F. Pellicciotti, B. Brock, U. Strasser, P. Burlando, M. Funk and J. Corripio

134

An enhanced, albedo accounting, temperature-index melt model for distributed application

16:16

S. Kolberg

135

Updating and validation of snow routines with remotely sensed snow cover data

16:18

J. Faillettaz and F. Louchet

137

Possible reasons for the scale invariance of avalanche starting zone sizes

16:20

J. Faillettaz, F. Louchet, B. Chareyre and D. Daudon

138

Snow toughness measurements: a challenge?

16:22

O. Bruland

139

Snow distribution mapping and modeling

16:24

O. Abe

140

Shear strength of snow layers including graupel

16:26

J. Rhyner and 6 others

144

Avalanche warning Switzerland: consequences of the avalanche winter 1999

16:28

M. Stähli, M. Stacheder, D. Gustafsson, A. Brandelik and M. Schneebeli

145

A new in-situ sensor for large-scale snow cover monitoring: II. Field test

16:30

D. Gustafsson, M. Stähli and R. Meister

146

Use of flat-band snow sensor data in a snowmelt run-off model

16:32

M. Fauve and H. Rhyner

147

Physical description of the snowmaking process using the jet technique and properties of the produced snow

16:34

A.S. Blanco

149

Avalanches in Finland: recent observations and experiences from forecasting


16:40

POSTERS



19:30

BANQUET (Theatre Hall)

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FRIDAY, 6 JUNE 2003

Session 13: Snow-cover modelling

08:30

S.H. Haraldsdóttir, H. ólafsson, Y. Durand, G. Giraud and L. Mérindol

82

A system for prediction of avalanche hazard in the windy climate of Iceland

08:50

M. Lehning, C. Fierz, B. Brown and B. Jamieson

95

Modelling instability for the snow cover model SNOWPACK

09:10

P. Bartelt and O. Buser

98

The principle of minimum entropy production and snow structure

09:30

C. Fierz, P. Etchevers, R. Jordan, M. Lehning, Y. Lejeune and E. Martin

107

SnowMIP, an intercomparison of snow models: comparison of detailed snow-cover simulations

09:50

T. Keller, C. Pielmeier, C. Rixen, F. Gadient, D. Gustafsson and M. Stähli

114

Impact of artificial snow and ski slope grooming on snow pack properties and soil thermal regime in a sub-alpine area


10:10

Refreshments

Session 14: Snowdrifting and avalanches

10:40

M. Nemoto, K. Nishimura, S. Kobayashi and K. Izumi

56

Numerical study of time development and its relevance to spatial development in drifting snow

11:00

C. Jaedicke, F. Naaim and M. Granig

76

Snow drift around avalanche defense structures

11:20

A.N. Bozhinskiy

13

The Monte-Carlo simulation of avalanche-type processes

11:40

S.P. Pudasaini, Y. Wang and K. Hutter

17

Dynamics of avalanches along general mountain slopes


12:00

Lunch

Session 15: Avalanches

14:00

J. étienne, P. Saramito and E.J. Hopfinger

30

Numerical simulations of dense clouds on steep slopes: application to powder-snow avalanches

14:20

A.S.T. Jones and B. Jamieson

1

Statistical avalanche-runout estimation for short slopes in Canada

14:40

F. Naaim-Bouvet, M. Naaim and T. Faug

65

Dense and powder avalanches around obstacles: dissipation processes

15:00

B. Turnbull, R. Straub and P. Bartelt

110

Modelling mixed snow avalanches in Aulta, Galtür and Vallée de la Sionne

15:20

M. Kern and F. Tiefenbacher

148

On the velocity structure of the shear layer in snow avalanches


15:40

Refreshments

Session 16: Avalanches, ice and permafrost

16:10

P. Gauer and D. Issler

141

Possible erosion mechanisms in snow avalanches

16:30

P. Sampl and T. Zwinger

143

Avalanche simulation with SAMOS

16:50

W. Haeberli, C. Huggel, A. Kääb, A. Polkvoj, I. Zotikov and N. Osokin

34

The Kolka-Karmadon rock/ice slide of 20 September 2002: an extraordinary event of historical dimensions in North Osetia (Russian Caucasus)

17:10

M. Luetschg, W. Haeberli and V. Stoeckli

94

Permafrost occurrence in avalanche slopes: field measurements and numerical modelling


17:30

Closing

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