The USGS Hawaiian Volcano Observatory keeps its eyes on active volcanoes in many ways. While old fashioned eyes and a notebook are used when field teams are near a volcano, modern volcano ...

Underwater sound travels extremely efficiently over long distances as hydroacoustic signals known as tertiary waves, or ...

Hawaiʻi Volcanoes National Park is sounding an unmistakable alarm as crowds surge to watch Kīlauea’s latest eruption, turning a remote summit into a choked maze of cars, pedestrians and volcanic ...