Auckland, June 6, 2016

Tagged by: Ice

Sub-daily Dove Imagery Used to Measure River Velocity


If it were possible, a stationary observer in sun synchronous orbit would see one Planet Dove satellite rocket past every ~90 seconds. At polar latitudes, the relative speed of Earth’s rotation is much lower, like the inside tracks of a vinyl record. As a result, Planet often collects multiple images of the […]

Change Detection in 3D: Generating Digital Elevation Models from Dove Imagery


Many communities live in mountainous or glaciated terrain, with a constant threat of landslides and avalanches. Remote sensing methods, including construction of digital elevation models (DEMs), have the potential to detect deformation of the Earth’s surface—not only horizontally, but also vertically. While active sensors like radar are excellent for detecting this 3D […]

Bigger, Faster Avalanches, Triggered by Climate Change


In 2016, two glaciers in Tibet sheered down to their bed, erupting into avalanches. The first disaster killed nine people. A major study, published in Nature Geosciences, examined Planet imagery in the months leading up to the avalanches, and their aftermath. The work was subsequently featured in the The New York Times: “‘…it […]

Tracking Dynamic Changes in Northern Surface Waters


Using the Yukon Flats in Alaska as the test study area, Sarah Cooley and colleagues evaluated the potential scientific utility of the Planet Dove constellation for hydrologic modeling and research. The study concluded that Planet imagery can improve mapping and tracking changing inundation extent of hundreds of small, heterogeneous water bodies in […]

Extreme Flow Velocities and Formation of a Dammed Lake


Jakob Steiner and team use digital elevation models and Landsat imagery in combination with high resolution Planet data to quantify surface elevation changes and flow velocities during a glacial surge of the Khurdopin Glacier. They conclude that the high frequency of Planet imagery is useful to capture peak surge velocities that are […]

Photometric Reconstruction through a Flock of Dove Cubesats


While Planet’s constellation of satellites currently operates in sun-synchronous orbit, the first generations of Doves were deployed out of the International Space Station (ISS) and therefore do not obey such an orbit. Their configuration in the ISS orbit samples at different local times within the mid-latitudes, and consequently, it is in theory […]

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