Volcano Watch — It’s All About Perspective: How to Interpret an Interferogram
Volcano Watch is a weekly article and activity update written by U.S. Geological Survey Hawaiian Volcano Observatory scientists and affiliates. Today's article is by Tyler Paladino, a Postdoctoral Fellow with the U.S. Geological Survey. Panels A and B show what an interferogram would look like for a simple expanding spherical magma chamber from an ascending and descending orbital perspective. The star shows the true center of the inflating magma source. The arrow and bar denote satellite flight direction and look direction respectively. Each fringe represents approximately 1.55 cm. Panels C and D show the same event in a cross-section view.
Photo and Video Chronology — Kīlauea East Rift Zone webcam maintenance and new Kīlauea interferogram
October 23, 2024 — Routine maintenance on Kīlauea East Rift Zone webcam October 23, 2024—InSAR image of Kīlauea middle East Rift Zone deformation This map shows recent deformation at Kīlauea over the timeframe of October 6–18, 2024. Data were acquired by the European Space Agency's Sentinel-1 satellites. Colored fringes denote areas of ground deformation, with more fringes indicating more deformation. Each color cycle represents 2.8 cm (1.1 in) of ground motion. The symbol in the upper left indicates the satellite's orbit direction (arrow) and look direction (bar). The round feature north of Nāpau and Makaopuhi Craters on the middle East Rift Zone