Archive for 2012

Fire-Tornado


WHAT IS A FIRE TORNADO?


The rare event occurs when a fire is whipped up by strong, dry air currents to form a vertical whirl.They can consist of a whirlwind of hot air around or within the flames or a vortex of fire itself.Also known as “fire devils” or “fire whirls”, they can uproot trees up to 49 ft (15m).Fire tornadoes are usually 30-200ft (10-50m) and a few meters wide, and last only a few minutes.But some of the largest can be more than a half a mile tall, contain winds over 100mph, and persist for more than 20 minutes. Fire tornadoes are rare in nature, but when they do start spinning they are even hotter than a regular fire.


HOW FIRE TORNADO FORM?



Hawaii Fire Tornado


Firefighters watch a "fire tornado" wreathed with dust and smoke as it swirls on the south slope of Hawaii's Mauna Kea volcano Sunday. The fiery column was spawned during a 1,400-acre (566-hectare) brush fire triggered by regional drought.


Fire Tornado in Bangkok

                           A fire tornado rises from burning peat on a farm in Bangor, U.K., in 2008.

Combustible, carbon-rich gases released by burning vegetation on the ground are fuel for most fire tornadoes, Forthofer said. "The vegetation on the ground heats up enough to release gas, but some of the gas can't combust, because it doesn't have enough oxygen around it."


Fire Tornado In Brazil: Whirling column of flames sweeps through burning fields




This rare phenomenon then swept through burning fields and stopped traffic in Brazil as bush fires spread across the country.The whirlwind of flame, several metres high, was caught on camera in Aracatuba, in southern Sao Paulo state. It was caused by strong, dry winds that fanned wildfires.
National geography News

Undersea Cave Yields One of Oldest Skeletons in Americas

The Young Man of Chan Hol lies in a Mexican undersea cave before the bones' removal




Apparently laid to rest more than 10,000 years ago in a fiery ritual, one of the oldest skeletons in the Americas has been retrieved from an undersea cave along Mexico's Yucatán Peninsula, researchers say.  Dating to a time when the now lush region was a near desert, the "Young Man of Chan Hol" may help uncover how the first Americans arrived—and who they were. 


It is surprised when i saw this article. This mean 10,000 years ago human might live under the sea and there are not just one!

No human, they conclude, could have ended up so far back in the cave system after that point—which is why they believe the young man is at least 10,000 years old. The exact age of the bones should be determined by ongoing carbon-dating tests, which should be completed in three to four months, Gonzalez said.The newly raised skeleton is the fourth to be found in underwater caves around the town of  Tulum. One of the other skeletons—named the Woman of Naharon, or Eve of Naharon—is thought to be even more ancient, around 12,000 years old.The team also found evidence of bonfires inside the cavern, which could suggest that illuminating the cave was a part of the funeral ceremony.The cavern where the body was found may have been chosen as the young man's final resting place due to its rich trove of stalactites and stalagmites—rocky cones that hang from the ceiling and thrust up from the ground, respectively.
"Next to his head are a group of stalagmites that could have evoked a special resting place," Gonzalez said, "or perhaps the place to begin a journey after death."

SinkHoles

Sinkhole in Guatemala




WHAT IS SINKHOLE?

Sinkhole is a natural depression or hole in the Earth's surface caused by karst processes.
Krast processes -the chemical weathering of carbonate rocks or suffosion  processes.

Sinkholes are depressions that occur when soil or bedrock has been removed and only air remains, commonly when the rock below the land surface is limestone,carbonate rock or salt beds that have been naturally dissolved by ground water circulating through them and then the water dries up. As the rock is dissolved by water(dissolution), spaces are created(suffosion) and typically sinkholes happen suddenly because the surface stays infact until the weight becomes too much. Sinkholes maybe formed gradually or suddenly. It can be different size from 1 to more than 100 feet deep and in different shape.

FORMATION OF SINKHOLE

There are two causes to formation of sinkhole, Natural Formation and Human Activity.
 Natural Formation of sinkhole is through the process of suffosion.For example, groundwater may dissolve the carbonate cement holding the sandstone particles together and then carry away the lax particles, gradually forming a void. Sinkhole formation under human activity is rare but still occasional collapse of abandoned mines in places like West Virgina, USA. Over pumping and extraction of groundwater and subsurface fluids also human activities that causes sinkhole.

SINKHOLE CAN BE REPAIR & GOT SIGNS TO SHOW

 These sinkhole might be very dangerous because it will causes building collapse and danger human or animal. Sinkhole in Guatemala is a very good example, if did not prevent it properly. There are several way to repair sinkhole and signs to tell whether a places got sinkhole or not. To repair sinkhole what we need to do is state certified contractor. Sinkhole remediation process also can help repair sinkhole. Dying vegetation unexpectedly, new ponds forming and slumping signpost, all of these are the signs of sinkhole already occurred. 
National Geography News : Sinkhole in Guatemala


Global Warming


The current cycle of global warming is changing the rhythms of climate that all living things have come to rely upon. What will we do to slow this warming? How will we cope with the changes we've already set into motion? While we struggle to figure it all out, the face of the Earth as we know it—coasts, forests, farms, and snowcapped mountains—hangs in the balance.








WHAT CAUSES GLOBAL WARMING?

 There are several greenhouse gases responsible for warming, and humans emit them in a variety of ways. Most come from the combustion of fossil fuels in cars, factories and electricity production. The gas responsible for the most warming is carbon dioxide, also called CO2. Other contributors include methane released from landfills and agriculture, nitrous oxide from fertilizers, gases used for refrigeration and industrial processes, and the loss of forests that would otherwise store CO2.

 EFFECT

 Ice is melting worldwide, especially at the Earth’s poles. This includes mountain glaciers, ice sheets covering West Antarctica and Greenland, and Arctic sea ice. Sea level rise has become faster over the last century. The hurricanes and other storm are likely become stronger. Global warming also will affect human's health.

 SOLUTION
Cut down the usage of greenhouse gasses and plant more tree or green plant because it can absorb the CO2 and release oxygen. It will reduces the temperature in the atmosphere.Researchers Stephen Pacala and Robert Socolow at Princeton University have suggested one approach that they call "stabilization wedges." This means reducing GHG emissions from a variety of sources with technologies available in the next few decades, rather than relying on an enormous change in a single area.  They suggest 7 wedges that could each reduce emissions, and all of them together could hold emissions at approximately current levels for the next 50 years, putting us on a potential path to stabilize around 500 ppm.

 Good news to tell that is there are a variety of options to put us on a path toward a stable climate.

 National Geography News: Causes of Global Warming

 National Geography News: Effects Of Global Warming

 National Geography News: Solution Of Global Warming

Ice-Breaking: U.S. Oil Drilling Starts as Nations Mull Changed Arctic

Along the Chukchi Sea near Wainright, Alaska, scientists working for Shell fanned out in summer 2011 in preparation for the company's offshore drilling, which began this weekend.  One archaeologist uses a GPS device to record the precise location of a Native American sod house on the shore.

 On August 27, after a scorching summer of record-breaking drought and heat across the U.S., scientists reported that summer sea ice in the Arctic Ocean had shrunk to its lowest extent in recorded history—worrisome news to those concerned about polar bears or eroding Inupiat villages or other impacts of climate change. 
Scramble at the Top of the World



Climate scientists have long said there will be winners and losers from climate change. Nations with territory in the Arctic, where temperatures are warming four times faster than the global average, could be the biggest winners by far. The Arctic could contain as much as 22 percent of the world's hydrocarbon deposits, with some 29 billion barrels of oil and more than 200 trillion cubic feet of natural gas thought to lie off the Alaska coast alone. North America's largest oil field, Prudhoe Bay, in comparison, held an estimated 25 billion barrels.

 In my opinion, this phenomena will affect the ecosystem of the Arctic. It might affect the animal in that area and cause them to go extinct.
National Geography

 Pictures:Beneath Melting Arctic Ice, Stores of Oil

Review : The Cove



The Cove is a documentary about a story of a group of activist against the slaughtering of dolphins in Japan. The film follows former dolphin trainer Ric O'Barry's quest to document the dolphin hunting operations in Taiji, Japan.

After watching the movie, i feel that humans are without sympathize.Dolphins is a beautiful creature yet human still hunt it down. The way they treat animals just like the way they treat other humans. If can get benefit, they will just do it even is killing other humans. The fishermen in Taiji sell the dolphin in an underhanded market. The nature of what they do is so chilling and the consequences are so dangerous to human health.

Is so sad that know the dark side of humanity but it is a fact and it has been proof in this movie.









What is Geography?


Geography is the study of the Earth. It explores the natural processes that occur on the planet over time as well as the relationship between the Earth and its inhabitants. Geography also tells the changes that happen on the Earth over time and provides clarity on things that are constantly taking place in our surroundings. Geography can also be about natural disasters and studies the reason for their occurrence, their effects and the ways to solve them. 


WHY DO WE STUDY GEOGRAPHY?


Different types of Natural Disaster

 We study Geography so that we are able to understand the Earth better. By studying Geography, we are more aware of the changes that are constantly taking place. We are also able to understand the relationship between humans and Earth and the effects that this relationship can have on one another. With this understanding, we will also be more aware of our actions and how it can directly impact our planet both in the short run and the long run. Beside that, we also learn how to manage Natural Disaster through learning of geography.

Popular Posts

  • SinkHoles
    Sinkhole in Guatemala WHAT IS SINKHOLE? Sinkhole is a natural   depression or hole in the Earth's surface caused by kars...
  • Fire-Tornado
    WHAT IS A FIRE TORNADO? The rare event occurs when a fire is whipped up by strong, dry air currents to form a vertical whirl. They ca...
  • Global Warming
    The current cycle of global warming is changing the rhythms of climate that all living things have come to rely upon. What will we do to ...
  • Ice-Breaking: U.S. Oil Drilling Starts as Nations Mull Changed Arctic
    Along the Chukchi Sea near Wainright, Alaska, scientists working for Shell fanned out in summer 2011 in preparation for the company's ...
  • Review : The Cove
    T he Cove is a documentary about a story of a group of activist against the slaughtering of dolphins in Japan. The film follows forme...
  • Undersea Cave Yields One of Oldest Skeletons in Americas
    The Young Man of Chan Hol lies in a Mexican undersea cave before the bones' removal Apparently laid to rest more than 10,000 ye...
  • What is Geography?
    Geography is the study of the Earth. It explores the natural processes that occur on the planet over time as well as the relationship betw...

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