Geologists estimate that Mauna Loa, the world’s largest active volcano, has erupted about once every six years for the past three millennia.
Published Nov 1, 2015
As the highest volcano on the island of Hawaii, it is an ideal location for astronomical observatories.
Published Nov 30, 2015
A detailed astronaut photograph shows pyroclastic deposits on Hawaii’s Muana Kea Volcano.
Published May 18, 2009
Multiple snowstorms in December left the island’s highest peaks blanketed in white.
Published Dec 29, 2016
This satellite image of the summit of Mauna Loa overlaid with contour lines helps illustrate why volcanic emissions from the summit rarely reach the observatory where atmospheric carbon dioxide is measured.
Published Mar 19, 2010
Llaima Volcano had temporarily quieted when the Advanced Land Imager passed overhead on April 16, 2009.
Published Apr 23, 2009
Emi Koussi is a high volcano that lies at the south end of the Tibesti Mountains in the central Sahara in northern Chad. The volcano is one of several in the Tibesti massif, and reaches 3415 m in altitude, rising 2.3 kilometers above the surrounding sandstone plains. The volcano is 65 kilometers wide. This view of the Emi Koussi caldera is detailed to the point that it doesn’t include the entire 10-kilometer diameter of the caldera, but reveals individual lava strata within the walls of the summit cliffs. Nested within the main caldera is a smaller crater that contains white salts of a dry lake at its lowest point. Here too, strata are visible in the walls of the smaller crater. The smaller crater is surrounded by a region of darker rocks—a geologically young dome of lava studded with several small circular volcanic vents.
Published Dec 8, 2002
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