Difference between revisions of "Destructive size definition table"
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==Definition== | ==Definition== | ||
| − | '''Determine the destructive potential of the avalanche(s) resulting from a specific | + | '''Determine the destructive potential of the avalanche(s) resulting from a specific Avalanche Character within a defined location.''' |
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|class="Header" style="width:50px;"|Typical<br/>path length | |class="Header" style="width:50px;"|Typical<br/>path length | ||
|- | |- | ||
| − | |class="Class"| | + | |class="Class"|1 |
|style="text-align:left;"|Relatively harmless to people. | |style="text-align:left;"|Relatively harmless to people. | ||
|<10 t | |<10 t | ||
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|10 m | |10 m | ||
|- | |- | ||
| − | |class="Class"| | + | |class="Class"|2 |
|style="text-align:left;"|Could bury, injure, or kill a person. | |style="text-align:left;"|Could bury, injure, or kill a person. | ||
|10<sup>2</sup> t | |10<sup>2</sup> t | ||
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|100 m | |100 m | ||
|- | |- | ||
| − | |class="Class"| | + | |class="Class"|3 |
|style="text-align:left;"|Could bury and destroy a car, damage a truck, destroy a wood frame house, or break a few trees. | |style="text-align:left;"|Could bury and destroy a car, damage a truck, destroy a wood frame house, or break a few trees. | ||
|10<sup>3</sup> t | |10<sup>3</sup> t | ||
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|1000 m | |1000 m | ||
|- | |- | ||
| − | |class="Class"| | + | |class="Class"|4 |
|style="text-align:left;"|Could destroy a railway car, large truck, several buildings, or a forest area of approximately 4 hectares. | |style="text-align:left;"|Could destroy a railway car, large truck, several buildings, or a forest area of approximately 4 hectares. | ||
|10<sup>4</sup> t | |10<sup>4</sup> t | ||
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|2000 m | |2000 m | ||
|- | |- | ||
| − | |class="Class"| | + | |class="Class"|5 |
|style="text-align:left;"|Largest snow avalanche known. Could destroy a village or a forest area of approximately 40 hectares. | |style="text-align:left;"|Largest snow avalanche known. Could destroy a village or a forest area of approximately 40 hectares. | ||
|10<sup>5</sup> t | |10<sup>5</sup> t | ||
Revision as of 08:58, 24 January 2017
Definition
Determine the destructive potential of the avalanche(s) resulting from a specific Avalanche Character within a defined location.
| Destructive Size | Avalanche destructive potential (definition) |
Typical mass |
Typical impact pressure |
Typical path length |
| 1 | Relatively harmless to people. | <10 t | 1 kPa | 10 m |
| 2 | Could bury, injure, or kill a person. | 102 t | 10 kPa | 100 m |
| 3 | Could bury and destroy a car, damage a truck, destroy a wood frame house, or break a few trees. | 103 t | 100 kPa | 1000 m |
| 4 | Could destroy a railway car, large truck, several buildings, or a forest area of approximately 4 hectares. | 104 t | 500 kPa | 2000 m |
| 5 | Largest snow avalanche known. Could destroy a village or a forest area of approximately 40 hectares. | 105 t | 1000 kPa | 3000 m |
Source:
Canadian Avalanche Association. (2007). Observation Guidelines and Recording Standards for Weather, Snowpack, and Avalanches. Revelstoke, BC.
