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Dive into the research topics where Martin Schneebeli is active.

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Featured researches published by Martin Schneebeli.


Annals of Glaciology | 2004

Changes in the shear strength and micro-penetration hardness of a buried surface-hoar layer

Karl W. Birkeland; Kalle Kronholm; Martin Schneebeli; Christine Pielmeier

Abstract We investigated a buried surface-hoar layer using the SnowMicroPen (SMP), an instrument designed to measure detailed snowpack profiles.We collected data from two adjacent parts of a slope 6 days apart. In addition, one manual snowpack profile was sampled each day, as well as 50 quantified loaded column tests (QLCTs) which provided an index of shear strength. For the SMP data, a 900 m2 area was sampled on both days in a grid with points 3 mapart, with some sub-areas of more closely spaced measurements. We collected 86 SMP profiles on the first day and 129 on the second day. Our analyses involved manually locating layer boundaries and calculating statistics for the force signal through the surface-hoar layer. The shear strength index increased by 40% between the two sampling days, but the SMP data show no statistical difference in layer thickness, and the mean, minimum, median, and a variety of percentile measures of the SMP force signal through the layer also do not change. Interestingly, the maximum hardness, and the variance and coefficient of variation of the SMP signal, increased. Since the small SMP tip might only break one or a couple of bonds as it passes through the weak layer, we interpret these changes as being indicative of increasing bond strength. Though we cannot specifically tie the increasing maximum hardness of the SMP signal to our QLCT results, our work suggests that the maximum SMP signal within buried surface-hoar layers may be useful for tracking increases in the shear strength of those layers.


Annals of Glaciology | 1998

A constant-speed penetrometer for high-resolution snow stratigraphy

Martin Schneebeli; Jerome B. Johnson


Archive | 1997

Snow strength penetrometer

Jerome B. Johnson; Martin Schneebeli


2002 International Snow Science Workshop, Penticton, British Columbia | 2002

Snow stratigraphy measured by snow hardness and compared to surface section images

Christine Pielmeier; Martin Schneebeli


2002 International Snow Science Workshop, Penticton, British Columbia | 2002

Spatial variability of snow stability on small slopes

Kalle Kronholm; Jürg Schweizer; Martin Schneebeli


Geoscientific Instrumentation, Methods and Data Systems Discussions | 2016

Nordic Snow Radar Experiment

Juha Lemmetyinen; Anna Kontu; Jouni Pulliainen; Juho Vehviläinen; Kimmo Rautiainen; Andreas Wiesmann; Christian Mätzler; Charles Werner; Helmut Rott; Thomas Nagler; Martin Schneebeli; Martin Proksch; Dirk Schüttemeyer; Michael Kern; Malcolm Davidson


Proceedings of the 2000 International Snow Science Workshop, October 1-6, Big Sky, Montana | 2000

Measuring Snow Profiles with High Resolution: Interpretation of the Force-Distance Signal from a Snow Micro Penetrometer

Christine Pielmeier; Martin Schneebeli


Proceedings Whistler 2008 International Snow Science Workshop September 21-27, 2008 | 2008

The First Wetting of Snow: Micro-Structural Hardness Measurements Using a Snow Micro Penetrometer

Frank Techel; Christine Pielmeier; Martin Schneebeli


International Snow Science Workshop 2016 Proceedings, Breckenridge, CO, USA | 2016

A Unique Time Series of Daily and Weekly Snowpack Measurements At Weissfluhjoch, Davos, Switzerland

Neige Calonne; Cecilia Cetti; Charles Fierz; Alec van Herwijnen; Matthias Jaggi; Henning Löwe; Margret Matzl; Lino Schmid; Martin Schneebeli


EUSAR 2014; 10th European Conference on Synthetic Aperture Radar; Proceedings of | 2014

Observations of seasonal snow cover at X and Ku bands during the NoSREx campaign

Juha Lemmetyinen; Jouni Pulliainen; Anna Kontu; Andreas Wiesmann; Christian Maetzler; Helmut Rott; Karl Voglmeier; Thomas Nagler; Adriano Meta; Alex Coccia; Martin Schneebeli; Martin Proksch; Malcolm Davidson; Dirk Schuettemeyer; Chung-Chi Lin; Michael Kern

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Karl W. Birkeland

United States Forest Service

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Kalle Kronholm

Norwegian Geotechnical Institute

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Jerome B. Johnson

Cold Regions Research and Engineering Laboratory

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Anna Kontu

Finnish Meteorological Institute

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Jouni Pulliainen

Finnish Meteorological Institute

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Helmut Rott

University of Innsbruck

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