Related topics: earthquake

Monitoring Earth's shifting land

The monitoring of land subsidence is of vital importance for low-lying countries, but also areas which are prone to peculiar ground instability.

Image: Biomass Earth Explorer satellite

Set to fly in 2022, ESA's Biomass Earth Explorer satellite with its 12-m diameter radar antenna will pierce through woodland canopies to perform a global survey of Earth's forests – and see how they change over the course ...

NASA mobilizes to aid California fires response

For the past two weeks NASA scientists and satellite data analysts have been working every day producing maps and damage assessments that can be used by disaster managers battling the Woolsey Fire near Los Angeles and the ...

Image: Updated NASA damage map of Camp Fire from space

As firefighters continue to battle the destructive Camp Fire in Northern California, the Advanced Rapid Imaging and Analysis (ARIA) team at NASA's Jet Propulsion Laboratory in Pasadena, California, has produced a new map ...

NASA's ARIA maps California wildfires from space

California continues to be plagued by wildfires—including the Woolsey Fire near Los Angeles and the Camp Fire in Northern California, now one of the deadliest in the state's history. NASA satellites are observing these ...

New maps to support decision-making after an earthquake

Researchers from diverse institutions, including the School of Land Surveying, Geodesy and Mapping Engineering from Universidad Politécnica de Madrid, have developed a new methodology to create easy-to-understand maps for ...

Three Earth Explorer ideas selected

As part of ESA's continuing commitment to realise cutting-edge satellite missions to advance scientific understanding of our planet and to show how new technologies can be used in space, three new ideas have been chosen to ...

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Synthetic aperture radar

Synthetic-aperture radar (SAR) is a form of radar in which multiple radar images are processed to yield higher resolution images than would be possible by conventional means. Either a single antenna mounted on a moving platform (such as an airplane or spacecraft) is used to illuminate a target scene or many low-directivity small stationary antennas are scattered over an area near the target area. The many echo waveforms received at the different antenna positions are post-processed to resolve the target. SAR can only be implemented by moving one or more antennas over relatively immobile targets, by placing multiple stationary antennas over a relatively large area, or combinations thereof. SAR has seen wide applications in remote sensing and mapping.

This text uses material from Wikipedia, licensed under CC BY-SA