| ISS017 Earth Sciences and Image Analysis Photographic Highlights |
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| ISS017-E-5037 |
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| Santorini Volcano, Greece: One of the largest volcanic
eruptions in the past 10,000 years occurred in approximately 1620 BC
on the volcanic island of Santorini in the Aegean Sea. This astronaut
photograph illustrates the center of Santorini Volcano, located
approximately 118 kilometers to the north of Crete (not shown). Prior
to 1620 BC, the island of Santorini, now known as Thera, was built up
by layers of lava created by overlapping shield volcanoes, and it had
experienced three significant eruptions that formed overlapping
calderas, or collapsed magma chambers. Around 1620 BC, the fourth
(and latest) major eruption created the present-day islands and
caldera bay of Santorini Volcano. The caldera rim is clearly visible
in this image as a steep cliff forming the western shoreline of the
island of Thera. Following the 1620 BC eruption, much of the previous island of Santorini was destroyed or submerged; this event may have been the inspiration for the legend of the “lost continent” of Atlantis. Far from legend however, many archeologists believe that the eruption was a major factor—or the immediate cause—of the destruction of the classical Minoan civilization of Crete. The white rooftops of cities and towns trace the caldera rim on the island of Thera, and overlook the young central islands of Nea Kameni and Palaea Kameni, which both formed from lava domes and flows that started erupting approximately 1,400 years after the cataclysmic 1620 BC event. Several of these flows are visible in the image as brown to dark-brown irregular masses forming Nea Kameni (image left). The most recent volcanic activity in the Kameni islands occurred in 1950, and included some small explosions and production of lava. The extent of development, and location of an airport (image upper right) on Thera illustrate the popularity of Santorini Volcano as a tourist destination. Today, volcanic activity is closely monitored by the Institute for the Study and Monitoring of the Santorini Volcano, or ISMOSAV. |
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This service is provided by the International Space Station program and the JSC Astromaterials Research & Exploration Science Directorate. Recommended Citation: Image Science and Analysis Laboratory, NASA-Johnson Space Center. "The Gateway to Astronaut Photography of Earth." . |
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