What is a landslide

A landslide is the movement of rock, debris or earth down a slope. They result from the failure of the materials which make up the hill slope and are driven by the force of gravity. Landslides are known also as landslip, slumps or slope failure. Some of the most common types of landslide in Australia are earth slides, rock falls and debris flows. The movement of landslide material can vary from abrupt collapses to slow gradual slides and at rates which range from almost undetectable to extremely rapid. Sudden and rapid events are the most dangerous because of a lack of warning and the speed at which material can travel down the slope as well as the force of its resulting impact. Extremely slow landslides might move only millimetres or centimetres a year and can be active over many years. Although this type of landslide is not a threat to people they can cause considerable damage to property. Landslides can be triggered by natural causes or by human activity. They range from a single boulder in a rock fall or topple to tens of millions of cubic meters of material in a debris flow. They can vary also in their extent, with some occurring very locally and impacting a very small area or hillslope while others affect much larger regional areas. The distance traveled by landslide material also can differ significantly with slides traveling from a few centimeters to many kilometers depending on the volume of material, water content and gradient of the slope.

The basic types of landslide movement are:

Fall

This is generally characterized by a rapid to extremely rapid rate of movement with the descent of material characterized by a free fall period. Falls are commonly triggered by earthquakes or erosion processes.

Topple

This is characterised by the tilting of rock without collapse, or by the forward rotation of rocks about a pivot point. Topples have a rapid rate of movement and failure is generally influenced by the fracture pattern in rock. Material descends by abrupt falling, sliding, bouncing and rolling.

Flow

This is the most destructive and turbulent form of landslide. Flows have a high water content which causes the slope material to lose cohesion, turning it into a slurry. They are channeled by the landscape and move rapidly.

Slide

This is one of the most common forms of failure and can be subdivided into translational and rotational slides. Rotational slides are sometimes called slumps because they move with rotation. Translational slides have a planar, or two dimensional surface of rupture. Slides are most common when the toe of the slope is undercut. They have a moderate rate of movement and the coherence of material is retained, moving largely intact or in broken piece.

Funniest moment in my life

I believe that everybody's must have their own funniest moment that was happen in their life. I also never get behind from this memories. Let's we catch up with one step closer to my blog what is the baggiest funniest in my life. This memories was happen when I was still in secondary school when i was in form three. One day, I was be in duty for sport prefect in one football friendly match at my school. My duty at that day is helping for all necessary needs for the competitors. At that day, my teacher was asking me for arranged a drinks for the competitors that are in the friendly match. When I was busy arranged a drinks, one boy from my school competitors was come to me. Without opportunity for me to asked that boy what are he want, he was accuse me that i was slowly in my duty. I was feel so aspirated at that time. I know his... his a playboy at my school... so haughty. his was really good player at my school. My school was become a champion at one competition and he was be a top scorer or that competition. Finally, that game was begin in one week was finished.. i think that are no reason for me to meet that playboy again. At recess time, i was always finish my time at my school library. And for the whole day before I going to school my mother always ready me a breakfast. I still not feel hungry. I was going up a step until at second floor... suddenly, had a one person was scolded me because i was blocking his way. I was look upwards and i feel how come i still can meet this boy... without i can protecting my own self that boy was start scold me. I also do know what wrong that i was done until he never stop scolded me. In my place that he was in my upward i was see something... i was see that he was never zip his breeches. now it's my time to return back for me to make his feel shy. He was become strange because i still can give a smile when he was still scolded me. Then i was say " before to get start scolded me please zip your own breeches first, just make your own self shamed only" and i can see that his face was starting become shame. Now i feel that i was very satisfied. From that day, he never scolded me again when we are met, even now we also not become an enemy. He now was become my best friend.. but he still had an attitude as playboy, but not like this before. This are the one of the best funniest moments memories that was happen in my life.