The three parts of the avalanche path are
starting zone зона зарождения (лавиносборник)
avalanche track зона транзита (лоток)
and
runout zone зона остановки (конус выноса).

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При выпадении снега в гористой местности, он скапливается на склонах и образует лавинные очаги. Каждый лавинный очаг состоит из трех зон:

- зона зарождения (лавиносборник);
- зона транзита (лоток);
- зона остановки (конус выноса).

https://refdb.ru/look/2507808-p2.html


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ABSTRACT: The distribution of snow depth in avalanche starting zones exerts a strong ... A-Basin has a large number avalanche starting zones above treeline at ...
https://static1.squarespace.com/static/53fbfe1ce4b04ce86372f...
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The main characteristic of a starting zone is the slope gradient, which influences the release of an avalanche considerably.
https://books.google.com/books?id=xsVoBQAAQBAJ&pg=PA41&lpg=P...
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which is presented here, it analyses the starting zone of an avalanche path. By means of a digital terrain model and a description of vegetation and main ridges
https://www.cambridge.org/core/services/aop-cambridge-core/c...
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The distribution of snow depth in avalanche starting zones exerts a strong influence on avalanche potential and character.
http://www.sciencedirect.com/science/article/pii/S0165232X15...
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Avalanche starting zones below the timber line--structure of forest, in Proceedings International Snow Science
https://www.researchgate.net/publication/288028886_Avalanche...

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Avalanche mitigation can be divided into two categories - structural and ... Preservation and protection of forests in avalanche starting zones is one of the oldest ..
http://mearsandwilbur.com/avalanche_mit.html


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The three parts of an avalanche path are the starting zone, avalanche track, and runout zone.
https://nsidc.org/sites/nsidc.org/files/images//avalanchetra...
https://nsidc.org/cryosphere/snow/science/avalanches.html