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How many volcanic cones can you spot? 🤔 🌋 This image shows the western portion of São Miguel Island, part of the Portuguese Azores. The Azores archipelago lies at the junction of the North American, Eurasian, and African tectonic plates – making it a volcanically and seismically active region. The Sete Cidades caldera – a large crater formed when a volcano erupts and collapses – shown here contains several smaller volcanic cones and two lakes. The larger, Sete Cidades Lake, is made up of two connected branches: Lagoa Azul (on the top in this image) and Lagoa Verde. The lake water is high in sodium and chloride due to sea salt spray. Two other volcanic cones are nearby: Caldeira do Alfreres, which formed during an eruption around 2050 BCE, and Caldeira Seca, which last erupted in 1444. This image of São Miguel was acquired in December 2018 by the Landsat 8 satellite. #EarthFromSpace #Azores #Island #Volcano
2 years ago
Photo NASA Earth - Dr. Kate Fickas is a U.S. Geological Survey (USGS) Mendenhall Fellow and creator of the #LadiesOfLandsat — a group dedicated to bringing together people who use Landsat data. She uses Landsat to…
Photo NASA Earth - Meet Dr. Jim Irons, the Director Emeritus of Goddard’s Earth Science Division! Jim worked at Goddard for 43 years, and was a project scientist for Landsat 8 from 1999 to 2021. He used #Landsat data…
Photo NASA Earth - Every year, the Lena River moves over 20 million metric tons of suspended sediment into the Laptev Sea. Some of that suspended sediment is visible flowing from beneath an ice shelf at the top right…
Video NASA Earth - Landsat’s been taking Earth selfies for 50 years! 📸🌎 Dr. Chris Neigh, Landsat 9 project scientist, shares how the Landsat satellites have documented changes on Earth – revealing patterns, cycles,…
Photo NASA Earth - 53 years ago and almost 240,000 miles away, we set foot on our very own natural satellite. Apollo 11 astronauts explored the lunar surface, collecting samples to bring back to Earth. Happy…
Photo NASA Earth - 🧂🌋🧂 The Tunupa Volcano is on a peninsula between two of Bolivia’s largest salt flats, Salar de Coipasa (top left in this image) and Salar de Uyuni (bottom right). The salt flats are typically a…

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