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Author Topic: 🚩 Global Climate Chaos ☠️  (Read 69159 times)

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AGelbert

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Re: 🚩 Global Climate Chaos ☠️
« Reply #165 on: February 05, 2015, 07:49:58 pm »
Landslides 101 

They can happen suddenly, ripping homes from their foundations, turning roads into rubble, and killing almost everything in its path. The powerful force of a landslide leaves only destruction in its wake.

Landslide cuts off No.3 freeway in Taiwan

Landslide is term used to describe the movement of rock, debris and soil down a slope. Gravity is the primary cause of landslides. But other factors contribute to landslide danger by weakening slopes to the point of failure:

Erosion of rock and soil by rivers, glaciers, or ocean waves

Saturation of rock and soil slopes by snowmelt or heavy rains

Movement caused by earthquakes, especially those with magnitude 4.0 and greater

Volcanic eruptions producing loose ash deposits, heavy rain, and debris flows

Deforestation and construction in fragile areas.

Excess weight from accumulated rain or snow, or from man-made structures


Coastal Landslides

According to the U.S. Geological Survey, landslides are a serious geologic hazard common in almost every U.S. state. It is estimated that in the U.S., landslides cause in excess of $1 billion in damages and about 25 to 50 deaths each year.

Globally, landslides destroy far more, causing hundreds of billions in damages and hundreds of thousands of deaths and injuries each year.


Washington State Dept of Transportation
SR 410 Nile Valley Landslide (west of Naches)
Aerial view of west end of the landslide burying the highway and damming the Naches River.


Know These Landslide Warning Signs

Springs, seeps, or saturated ground in areas that have not typically been wet before.

New cracks or unusual bulges
in the ground, street pavements or sidewalks.

Soil moving away from foundations.

Ancillary structures such as decks and patios tilting and/or moving relative to the main house or tilting or cracking of concrete floors and foundations.

Broken water lines and other underground utilities.

Leaning telephone poles, trees, retaining walls or fences.

Sunken or down-dropped road beds.

Rapid increase in creek water levels, possibly accompanied by increased turbidity (soil content). Or a sudden decrease in creek water levels though rain is still falling or just recently stopped.

A faint rumbling sound that increases in volume  :o is noticeable as the landslide nears.

Unusual sounds, such as trees cracking or boulders knocking together, might indicate land movement.


Washington State Dept of Transportation
SR 410 Nile Valley Landslide - Oct. 2009
Aerial view of the Nile Valley slide


What To Do During a Landslide



Stay alert and awake. Many debris-flow fatalities occur when people are sleeping! Stay tuned to weather news and heed alerts.

If you are in areas susceptible to landslides and debris flows, consider leaving if it is safe to do so. Remember that driving during an intense storm can be hazardous. If you remain at home, move to a second story if possible.

Staying out of the path of a landslide or debris flow saves lives.  ::)

Listen for any unusual sounds that might indicate moving debris, such as trees cracking or boulders knocking together. A trickle of flowing or falling mud or debris may precede larger landslides.

If you are near a stream or channel, be alert for any sudden increase or decrease in water flow and for a change from clear to muddy water. Such changes may indicate landslide activity upstream, so be prepared to move quickly. Don’t delay!  Save yourself, not your belongings.

Be especially alert when driving
. Bridges may be washed out, and culverts overtopped. Do not cross flooding streams! Turn Around, Don’t Drown!

Embankments along roadsides are particularly susceptible to landslides. Watch the road for collapsed pavement, mud, fallen rocks, and other indications of possible debris flows.


2104 Washington Landslide
A photo from an aerial survey showing the upper parts of the landslide that occurred in northwest Washington state, near Oso, on March 22, 2014. USGS landslide specialists, in collaboration with seismologists and state agencies, are still working to interpret the complex sequence of events that led to the landslide.
To get a perspective on the size of the landslide, look toward the bottom-left of this photo and you'll see, what appears to be, a tiny house just inside the tree line.
You can read the latest updates on the science and how the USGS is contributing to the understanding of this event at on.doi.gov/OsoLandslide.
Credit: Jonathan Godt, USGS.


What To Do After a Landslide   ;D 


Stay away from the slide area. There may be danger of additional slides.

Listen to local radio or television stations for the latest emergency information.

Watch for flooding, which may occur after a landslide or debris flow. Floods sometimes follow landslides and debris flows because they may both be started by the same event.

Check for injured and trapped persons near the slide, without entering the direct slide area . Direct rescuers to their locations.

Help a neighbor who may require special assistance – infants, elderly people, and people with disabilities. Elderly people and people with disabilities may require additional assistance. People who care for them or who have large families may need additional assistance in emergency situations.

Look for and report broken utility lines and damaged roadways and railways to appropriate authorities. Reporting potential hazards will get the utilities turned off as quickly as possible, preventing further hazard and injury. Agelbert NOTE: Remember that ruptured gas pipelines have a strong tendency to do this: 

Check the building foundation
, chimney, and surrounding land for damage. Damage to foundations, chimneys, or surrounding land may help you assess the safety of the area.

Replant damaged ground as soon as possible since erosion caused by loss of ground cover can lead to flash flooding and additional landslides in the near future.

Seek advice from a geotechnical expert for evaluating landslide hazards or designing corrective techniques to reduce landslide risk. A professional will be able to advise you of the best ways to prevent or reduce landslide risk, without creating further hazard.

Be Prepared! Know Before™.
The WeatherBug – Earth Networks Team

http://knowbefore.weatherbug.com/2014/12/09/landslides-101/
Rob not the poor, because he is poor: neither oppress the afflicted in the gate:
For the Lord will plead their cause, and spoil the soul of those that spoiled them. Pr. 22:22-23

 

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