11 Aug '12, 1pm

Piedra del Águila Dam Reshapes the Limay River [image] #NASA

Piedra del Águila Dam Reshapes the Limay River [image] #NASA

View Image Comparison View Both Images The Limay River originates at the eastern end of Nahuel Huapi Lake and flows northeastward through Argentina until it joins the Río Negro. Human intervention has significantly reshaped the Limay River over the past few decades, namely through the construction of dams such as Piedra del Águila (“Stone of the Eagle”). Acquired by the Thematic Mapper on the Landsat 5 satellite, these natural-color images compare the Limay River before and after completion of the dam. The top image shows the region on October 29, 1986, and the bottom image shows the same region on October 14, 1998. The manmade Piedra del Águila Reservoir covers roughly 300 square kilometers (100 square miles) and extends partway up the tributaries feeding the Limay River, including the Collón Curá River. The dam generates roughly 24 percent of Argentina’s hydroelectric en...

Full article: http://earthobservatory.nasa.gov/IOTD/view.php?id=78818&s...

Tweets

Ready for take off

Ready for take off

navy.mil 13 Aug '12, 3pm

PACIFIC OCEAN (Aug. 11, 2012) An F/A-18A Hornet assigned to the Flying Eagles of Strike Fighter Squadron (VFA) 122, a flee...

River Outflow to the Kara Sea: The Ob and Yenisei Rivers wash sediment and dissolved plant matter into the Arcti...

River Outflow to the Kara Sea: The Ob and Yenis...

earthobservatory.nasa.gov 11 Aug '12, 11pm

When rivers flow to the sea, they usually carry sediment and dissolved organic material —dead and decaying plant material—...

Konichiwa #Sasebo #Japan: #oceans

Konichiwa #Sasebo #Japan: #oceans

navy.mil 17 Aug '12, 6pm

SASEBO, Japan (Aug. 16, 2012) The forward-deployed amphibious assault ship USS Bonhomme Richard (LHD 6) anchors in Sasebo,...

Mapping the Hot Summer [image] #NASA

Mapping the Hot Summer [image] #NASA

earthobservatory.nasa.gov 17 Aug '12, 1pm

July 2012 was the hottest month on record for the contiguous (lower 48) United States, according to the National Climatic ...

India is trying to delay Pakistan's Bhasha dam ...

defence.pk 11 Aug '12, 7pm

All political parties based on religion color and tongues have been created by people in power is to strengthen Pakistan e...