26 Nov '11, 11pm

NASA Earth Observato Oulu, Finland: Today, Finland’s coastal city of Oulu is subarctic. A little over 11,000 yea...

The city of Oulu, Finland, lies at the mouth of the Oulujoki River along the Gulf of Bothnia. The northerly location makes for cool summers and cold, dark winters. Today’s subarctic climate, however, is mild compared to that of its recent geologic history. As recently as 11,000 years ago, the area was buried under a glacier. The Landsat 7 satellite captured this image of Oulu on June 25, 2001. Urban areas are pale gray, bare ground is brown, vegetation is green, and water is navy blue. The Oulujoki River surrounds tiny islands en route to the sea in this low-lying area. Geologists surmise that during the most recent ice ages, the Fennoscandian Ice Sheet extended over a large expanse of northwestern Eurasia, reaching its greatest thickness about 20,000 years ago. The ice sprawled over Scandinavia and was thickest over the Gulf of Bothnia. The ice pushed primarily eastward a...

Full article: http://earthobservatory.nasa.gov/IOTD/view.php?id=76512&s...

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Oulu, Finland: Today, Finland’s coastal city of...

earthobservatory.nasa.gov 26 Nov '11, 11pm

The city of Oulu, Finland, lies at the mouth of the Oulujoki River along the Gulf of Bothnia. The northerly location makes...

Oulu, Finland [image] #NASA

earthobservatory.nasa.gov 26 Nov '11, 11pm

The city of Oulu, Finland, lies at the mouth of the Oulujoki River along the Gulf of Bothnia. The northerly location makes...

Snowfall on the Selenga River Delta, Russia [im...

earthobservatory.nasa.gov 27 Nov '11, 11pm

This astronaut photograph from the International Space Station reveals the Selenga River Delta, which is built out into La...

Snowfall on the Selenga River Delta, Russia: Th...

earthobservatory.nasa.gov 27 Nov '11, 11pm

This astronaut photograph from the International Space Station reveals the Selenga River Delta, which is built out into La...