Since the early 1990s, scientists have used radar satellites to map movement, or deformation, of Earth’s surface. Interferometric Synthetic Aperture Radar (InSAR) calculates the difference between two radar images acquired
Hawaiian Volcano Observatory
VOLCANOWatch: Seeing the Earth Shake on Your Screen
The USGS Hawaiian Volcano Observatory, along with its partners at NOAA’s Pacific Tsunami Warning Center and the National Strong-Motion Project, operates a network of seismic monitoring stations on the Island
VOLCANOWatch: New Eyes in the Sky for Monitoring Hawaiian Volcanoes
The Hawaiian Volcano Observatory is no rookie when it comes to using flight to assist with monitoring Hawaiian volcanoes. Helicopters and fixed-wing aircraft have transported HVO volcanologists for decades, giving
VOLCANOWatch: USGS to Survey Kīlauea Volcano from its Summit to Kumukahi
Since the end of 2018’s volcanic activity, USGS Hawaiian Volcano Observatory scientists have wanted to resurvey Kīlauea Volcano’s ground surface to document changes brought about by the Puna eruption and
VOLCANOWatch: 2019 Marks the 50th Anniversary of Kīlauea’s Mauna Ulu Eruption
May 24, 2019, is a notable date in Kīlauea Volcano’s history. It is the one-year anniversary of several key events in the 2018 Kīlauea eruption, most notably, the reactivation of
VOLCANOWatch: Students Use Science for the Benefit of Their Communities
During the 2018 eruption of Kīlauea Volcano, when fissures erupted and lava flowed in the lower East Rift Zone (LERZ), many Puna residents were displaced from their homes. We, as
VOLCANOWatch: New Insights Gained from Kīlauea Volcano’s 2018 Summit Collapses
A year ago, USGS Hawaiian Volcano Observatory scientists and Island of Hawaiʻi residents were in the throes of an historically unprecedented series of events for Kīlauea. By early April 2018,
VOLCANOWatch: HVO Geologists Recall Their First Day of the 2018 Lower East Rift Zone Eruption
With the one-year anniversary of the onset of Kīlauea Volcano’s 2018 lower East Rift Zone eruption upon us, USGS Hawaiian Volcano Observatory staff, like many Hawaiʻi residents, are reflecting on
VOLCANOWatch: What We’ve Learned from Kīlauea’s 2018 Lower East Rift Zone Eruption
May 3, 2019, marks the one-year anniversary of the start of Kīlauea Volcano’s 2018 lower East Rift Zone eruption. Over the past year, USGS Hawaiian Volcano Observatory geologists and collaborators
VOLCANOWatch: What Caused—or Did Not Cause—the 2018 Kīlauea Eruption?
When a major geologic event occurs, scientists who study such events and the people who are directly or indirectly impacted by it seek to understand its cause. Often, a first