Ash Plumes at Sarychev Peak
acquired June 15, 2009 download large image (228 KB, JPEG, 2000x1600)

One of the most active volcanoes in the Kuril Islands, Sarychev Peak began erupting on June 12, 2009. According to a report from the Sakhalin Volcanic Eruption Response Team on June 15, the ash plume from this eruption reached an altitude of up to 8 kilometers (5 miles) above sea level. Other reports estimated higher altitudes, including up to 16.5 kilometers (10 miles) above sea level.

The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Terra satellite captured this photo-like image on June 15, 2009, three days after the volcano began erupting. Clouds and/or volcanic ash obscure most of the sea surface and islands, but black outlines delineate Ostrov Matua (the island home of Sarychev Peak) and neighboring islands.

Evidence of recent eruptions appears in the form of a faint brown haze northeast and west of Ostrov Matua. MODIS apparently also caught a fresh burst of activity in this shot. A brown mass of volcanic ash, over 50 kilometers (30 miles) in diameter, hovers over the island. Judging from the plume’s shadows, it may have occurred in two or more pulses; toward the southeast, a small portion of the plume casts its shadow on the wider mass below.

Sarychev Peak is a stratovolcano composed of alternating layers of volcanic ash, lava, and rocks from earlier eruptions. It reaches an altitude of 1,496 meters (4,908 feet) above sea level along the summit’s southeastern rim. Historical volcanic activity has ranged from lava effusion to explosive eruptions.

  1. References

  2. Sakhalin Volcanic Eruption Response Team. 2009-06-15. Accessed June 15, 2009.
  3. Smithsonian Institution Global Volcanism Program. Sarychev Peak. Accessed June 15, 2009.
  4. The Volcanism Blog. (2009, June 15). More on the eruption of Sarychev Peak. Accessed June 15, 2009.

NASA image by Jeff Schmaltz, MODIS Rapid Response Team, Goddard Space Flight Center. Caption by Michon Scott.

Instrument(s): 
Terra - MODIS

Ash Plumes at Sarychev Peak

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