Parts of California’s coastline are sinking, according to a NASA-led study published earlier this year in Science Advances. That’s bad news for sea-level rise, which poses a flood risk along the shore even without the land subsiding.
Designed as a medium-class mission within NASA’s Explorers program, SPHEREx was selected by NASA for funding and development in February 2019. The mission is managed by NASA’s Jet Propulsion Laboratory (JPL) in California, with James Bock of the California Institute of Technology (Caltech) serving as principal investigator.
Developed at NASA JPL, the science instrument gives researchers a more detailed picture of high-temperature surfaces, such as land scorched by wildfire, than previous infrared instruments.
SpaceX plans to launch NASA’s SPHEREx Observatory and PUNCH satellites from its Falcon 9 rocket on Saturday, March 8 which can be seen above Southern California.
T​he research team used satellite data to track land subsidence, or sinking, along the coast of California. Sinking can happen for many reasons, including groundwater extraction, tectonics and other environmental conditions.
Scientists have uncovered dramatic shifts in California’s coastal landscape, revealing areas that are either sinking or rising. Using satellite and radar technology, researchers mapped land motion from 2015 to 2023,
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A recent study by a NASA-led team has detailed the areas of California where land is sinking, or rising, the most. While NASA 's report said the changes seemed insignificant as they amounted to just fractions of an inch per year, it noted that they can affect local flood risks, wave exposure, and saltwater intrusion.
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The SPHEREx Observatory is shown after having completed standalone operations in the West High Bay at Astrotech Space Operations Payload Processing Facility at Vandenberg Space Force Base in California, U.S., in this handout photo obtained by Reuters on February 24, 2025. NASA/JPL-Caltech/Handout via REUTERS