Geoscience Reference
In-Depth Information
Chapter 9
Evaluation of the Avalanche Danger
in Northwest Rila Mountain
Krasimir Stoyanov
Abstract The chapter treats the conditions determining avalanche formation and
action in Northwest Rila. It provides an analysis of the current morphosculptural
impact of avalanches on the Alpine and sub-Alpine mountain zones. The most
hazardous avalanche terrains are specified as well.
Keywords Avalanches
·
Avalanche danger
·
Tourism
·
Northwest Rila mountain
9.1 Introduction
The formation of avalanches is a risky geomorphologic process and a common event
upon the steep slopes of the high mountains. Avalanche is the snow slide on slopes
with certain declination. The place from where the avalanche breaks off is called the
beginning and the line of its breaking—an edge of breaking off. The distance from
there until the place where it stops is the route of the avalanche and the snow piled
up is called the avalanche cone.
Northwest Rila Mountain with its Alpine type of relief and the formation of a
thick and durable snow coverage is a region with a big intensity of the avalanche
formation.
The Alpine part of Northwest Rila Mountain is frequently visited by skiers and
snowboardists. The accelerated development of these sports is connected with the
expanding of the locations for their practicing. Nowadays skis are mainly prac-
ticed around the Mountain Base
lyovitsa and the hostel “Rila Lakes”. In the
future with the performing of tourist infrastructure projects, the number of the
visitors in the high part of the mountain will increase many times. The region is
also one of the important tourist destinations. Here are located various sites of the
“Hundred national tourists sites”—the most popular and visited mountain lakes in
our country—the Seven Rila lakes, the highest waterfall in Rila Mountain—the
Ma
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