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Volcanoes Along the Length of Iturup Island

45.0N 148.0E

November 4th, 2009 Category: Volcanoes

Japan - October 5th, 2009

Japan - October 5th, 2009

Iturup Island, belonging to the southern Kuril Islands, but disputed by Russia and Japan, runs diagonally across this  orthorectified image between the Sea of Okhotsk (left) and the North Atlantic Ocean (right). A chain of volcanic massifs stretches northeast to southwest along the length of the island.

Here, from bottom to top,  are the Berutarube stratovocano (at the tip of the island), the submerged caldera rim of the Lvinaya Past volcano, the Atsonupuri stratovolcano (west coast), the Bogatyr Ridge stratovolcano (center), the Grozny Group complex volcano (just northeast of the bay on the east coast), and the Baransky stratovolcano (near the east coast, just northeast of the previous).

Lvinaya Past and Other Volcanoes of Southern Iturup Island

44.6N 146.9E

October 12th, 2009 Category: Volcanoes

Japan - August 31st, 2009

Japan - August 31st, 2009

The topography of Iturup, the largest of the southern Kuril Islands, disputed by Russia and Japan, includes a chain of volcanic massifs running northeast to southwest. This image focuses on the volcanoes on the southern part of the island.

The most distinctive is the Lvinaya Past (literally “Lion’s Jaw”) volcano, located on the western shore. The volcano derives its name from a rock resembling a sleeping lion that breaches the surface at the center of the submerged caldera rim.

A shallow 5-km-wide passageway on the northwest side allows access of the Sea of Okhotsk into the caldera basin, whose floor is 550 m below sea level and lies almost 1 km below the caldera rim. From above, the caldera looks like a circular bay on the west coast.

Also visible in this orthorectified image are Berutarube and Atsonupuri, both stratovolcanoes. The former is seen here at the very tip of the island, while the latter is located on a peninsula on the west coast near the top of the image.

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