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Tacloban Before and After Haiyan

Credits
USGS / EROS; Link: http://earthobservatory.nasa.gov/

The taifun Haiyan hit the phillipines with wind speed up to 315 km/h, accompanied by a spring flood, on the 8th of November 2013. A water wall, 7.5 m in height, threatened the city of Tacloban which is located less than 5 m above sea level. The satellite image taken by ASTER shows vegetation in red, sealed surfaces in white to silver, soil in brown and water in black. The white spots are clouds.

Floods in East China

Credits
NASA/GSFC; Link: http://rapidfire.sci.gsfc.nasa.gov

This image shows Yangtze River with its numerous tributaries, wiggling its way through the picture. Between the river delta on the right-hand side of the picture and the big lake, you can see the megacity of Shanghai which is partly flooded. Due to the false-colour  combination of the image, the land surface is yellowish, whereas the shades of dark red or brown indicate water.

 

Location: China, Shanghai
Picture taken on August 1, 2003
Sensor: Terra MODIS
Band combination: NIR/MIR

Artificial Islands in Qatar

Credits
NASA/JSC; ISS Crew Earth Observations; Link: http://earthobservatory.nasa.gov

This digital camera image was taken at the international space station ISS and shows Doha, the capital city of the state of Qatar in the Persian Gulf. Ring roads surrounding the centre give an idea of the gradual extension of the city starting from the historical city centre.

The Growing City of Las Vegas

Credits
USGS; Link: http://earthexplorer.usgs.gov/

In comparing these two images, you get an idea of the rapid growth of Las Vegas, Nevada, between 1973 and 2002. Las Vegas is one of the fastest-growing US cities. Its high immigration rate and its areal extent have a negative effect on the water budget of this arid region. In order to solve this problem, politicians intervened: It is now forbidden to build new swimming pools, fountains must be operated using wastewater and the lawn can only be watered at certain days of the week.

 

Brasilia, Brazil

Credits
USGS; Link: http://earthexplorer.usgs.gov/

The city of Brasilia was planned from scratch by architect Oscar Niemeyer and urban planner Lucio Costa. It formally became the federal capital of Brazil on April 21, 1960. Since that day, Brasilia has been growing continually. Initially planned for only 500,000 residents, a number exceeded in 1970, about 2.6 million people were living in Brasilia in 2009. In this satellite image from 2002, you can see the satellite suburbs that developed almost arbitrarily in the surroundings of Brasilia.

 

Mount Vesuvius

Credits
NASA/GSFC/METI/Japan Space Systems; U.S./Japan ASTER Science Team; Link: http://asterweb.jpl.nasa.gov

This image shows Mount Vesuvius, the only active volcano on the European mainland. Mount Vesuvius erupted in AD 79 and buried its surrounding areas under a blanket of ashes that was approximately 30m thick. The excavation finds from the city of Pompeii constitute a snapshot of Roman life 2000 years ago: Perfectly intact wooden items, groceries and traces of hundreds of victims of the catastrophe. Mount Vesuvius has never rested and is constantly monitored for potential signs of a new eruption.