This document discusses landslides, including their definition, causes, effects, and circumstances. A landslide is the movement of rock, soil or debris down a slope. They are usually caused by instabilities in slopes and can be triggered by various factors. The effects of landslides can be both positive and negative - they provide land but also cause property damage, disruption, and environmental impacts. Landslides typically occur suddenly with a loud noise and rapid movement of material down a hillside. The document provides examples of landslide events that closed roads and damaged infrastructure in British Columbia, Canada.

1. Landslides of desaster
Name Group :
1.Fairuz Raniah
2.Rakhmad Badriawan
3.Widya Ayu Pratiwi

2. Definition
A landslide or landslip is a geological
phenomenon which includes a wide range of ground
movement, such as rockfalls, deep failure of slopes
and shallow debris flows, which can occur in
offshore, coastal and onshore environments.

3. Causes
The causes of
landslides are usually
related to instabilities in
slopes.
It is usually possible to
identify one or more
landslide causes and one
landslide trigger.
The difference between
these two concepts is subtle
but important.

4. Efect Positive and Negative of
Landslides
Negative
 The cost to repair
structures, loss of
property value.
 Disruption of
transportation routes.
 Medical costs in the
event of injury.
 Water availability,
quantity and quality

5. Positive
 Positives: Land back
loose, changing the
texture and shape of the
mountain, accelerate
and augment the
process of melting the
rock in a landslide

6. Sirkum Tenses of
Landslides
 Landslides generally occur
with a roar followed i ground,
motion accompanied hurtle
down the hill.

7. Proofen
Picture
In 1991, a rock slide near Loggers Creek closed
the Sea-to-Sky Highway for 12 days and cost
$7 million for repairs and preventative
structures
The Vancouver to Squamish highway has been
affected by 14 major debris torrents since 1906.
Twelve lives have been lost and 11 bridges, 4 homes
and numerous structures have been damaged or
destroyed. Not one of these 14 slide events was
larger than 20 000 cubic metres