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What does the past look like from 200 miles up? A new generation of archaeologists has found that the history of civilization may look far clearer from the top of the atmosphere than it does from the bottom of a dig.
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- The temple of Angkor Wat from above—the surrounding ruins hold untouched archaeological treasure.
Here in Cambodia, the new archaeology has changed the history of a civilization. The low-key Evans, a director of the University of Sydney’s Greater Angkor Project at just 32 years old, has already mapped northern Angkor, another heavily landmined area, from a computer screen in Australia. He has used radar and satellite images to chart its vast network of canals and reservoirs, proving that Angkor was once the largest city in the world, a metropolis consuming an area about the size of present-day Los Angeles. His work also underpins a radical new explanation of why, in the 15th century, the Angkor civilization died out, a finding that holds grave undertones for the megacities of the 21st century.
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Step 1
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NASA’s Aster satellite images the Earth in 15 different wavelengths. Parcak processes the data so that fields are red, cities blue and ancient ruins green.
Step 2
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A zoomed-in view of the image reveals a subtle green mound among the red fields. The white square is a water-treatment plant.
Step 3
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Using a visible-light image from the Quickbird satellite, Parcak spots a buried wall [stretching from the center of the brown field toward the upper left].
Step 4
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An on-the-ground dig identifies the ruins as the enclosure wall of the ancient city of Tell Tebilla, which dates from 600 B.C.
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Egyptian pyramids found by infra-red satellite images
Seventeen lost pyramids are among the buildings identified in a new satellite survey of Egypt.
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More than 1,000 tombs and 3,000 ancient settlements were also revealed by looking at infra-red images which show up underground buildings.
Source
While still in graduate school, Parcak loaded an image of the Egyptian Nile River Delta taken by NASA’s Landsat Earth-observing satellite into a program called Erdas Imagine, a cross between Google Earth and Photoshop that geologists and climate scientists use to analyze satellite images. All natural features—trees, water, sand—reflect and absorb light differently, and the program can tease out any unique signature the researcher is looking for. Using data from known archaeological sites, Parcak had already figured out how to sort for the high organic matter and phosphorus content that marked Egyptian “tells,” or ancient house mounds. She processed the new images so that any tells would show up pink.
When she analyzed the images, her computer screen filled with pink splotches. “I thought, ‘Wait a minute, those can’t all be archaeological sites,’ ” Parcak recalls. But then she went into the field with a GPS receiver. At the pink points on the Landsat image, the delta’s flat green fields gave way to silty brown mounds: remnants of tells. Parcak has since used satellite data to uncover hundreds of sites in Egypt, none of them exposed to the naked eye.
In northern Angkor, which isn’t as heavily forested as Lingapura, Damian Evans uses synthetic aperture radar (SAR), a type of all-weather radar beamed from the belly of an aircraft that can gather far more information than ordinary radar alone. The time it takes for the radar waves to reach the ground and bounce back up to the aircraft records changes in elevation, and variations in soil humidity and other factors produce signals of differing “brightness,” thus allowing archaeologists to pick out ancient canals and man-made mounds.
Originally posted by LiveForever8
I cant help wondering whether they have used this technology on the Moon and Mars, and if so, what did they find?
Originally posted by LiveForever8
I was to be an archaeologist!
I started collecting fossils from antique fairs and began buying a weekly Dinosaur magazine from my local newsagents, which I used to study intently. My mum would despair as I constantly dug up her garden in a lame attempt at discovering a T-Rex. All of this carried on for a few years, that was until a sober realisation set in.
Originally posted by JohnnyCanuck
I guess you figured out somewhere's along the way that archaeologists don't deal with dinosaurs...paleontologists do.
Some of the peaks tower nearly 10,000 feet (3,000 meters) above the ocean floor - nearly tall enough to break the water's surface.
"That's a big volcano. That's a very big volcano. If that was on land it would be quite remarkable," said Philip Leat, a vulcanologist with the British Antarctic Survey who led a seafloor mapping expedition to the region in 2007 and 2010.
Originally posted by Kandinsky
I believe that if it did occur, for some passing moments, the human race would be united as one as they looked up in increased wonder.
Originally posted by LiveForever8
But yeah, I think there is enough we are yet to discover about our own race before we start thinking about little green men. At least in archaeological terms. But it's still fun to speculate.
Originally posted by JohnnyCanuck
...but I would have liked to be a shovel money on that crew.
Originally posted by SonoftheSun
Just recently, they found a string of underwater volcanoes - HUGE volcanoes - in Antarctica.
Some of the peaks tower nearly 10,000 feet (3,000 meters) above the ocean floor - nearly tall enough to break the water's surface.
"That's a big volcano. That's a very big volcano. If that was on land it would be quite remarkable," said Philip Leat, a vulcanologist with the British Antarctic Survey who led a seafloor mapping expedition to the region in 2007 and 2010.
www.armageddononline.org...
Originally posted by LiveForever8
Space: the final frontier.
Well, not quite.
Ever since we crawled out of the slime mankind has dreamt of reaching out to the stars. First in fiction, thanks to the prominent fathers of science fiction writing such as H.G. Wells, Hugo Gernsback and even Edgar Allan Poe.
Eventually, thanks to advancements in rocketry in the 1930's/40's space flight became a reality and, spurred on by the Cold War space race, man finally set foot on The Moon in 1969. Since then massive amounts of time and money have been spent on satellites, probes, space shuttles and space stations alike - all in an effort to better understand the universe and the secrets it contains.
However, there was another father of science fiction that I have missed out - Jules Verne. While Verne also wrote of the possibilities of space travel (see here) he also wrote about another form of exploration, not up into space, but down into the depths of the oceans. This novel was called Twenty Thousand Leagues Under the Sea and told the story of Captain Nemo and his submarine Nautilus as seen from the perspective of Professor Pierre Aronnax.
One hundred and forty years later and we still know very little of what lurks beneath the surface - in essence - the deep seas are still at the mercy of speculation. Science fiction more than science fact.
An estimated 50-80% of all life on earth is found under the ocean surface and the oceans contain 99% of the living space on the planet. Less than 10% of that space has been explored by humans.
Originally posted by AlienCarnage
People tend to slam archeologists because they are slow producing results, even though it is not because they are hiding the results, in some cases they want to protect their status by not spouting something that can not be supported by others, without first having something to back them up, because of what happens to others that do come forth before double checking and acquiring data that supports their finds only to find they were incorrect and being a laughing stock of the archeological community.