Volcano Watch

Measuring how a volcano deforms in response to moving magma is one of the cornerstones of volcano monitoring. Our instrumentation includes a number of...

Volcanic eruptive activity may take many forms, from gently erupting basaltic fissures in Hawaii to intense explosive eruptions like those of Mount St...

Dr. Lis Gallant has spent the last two and a half years at the USGS Hawaiian Volcano Observatory (HVO) as a National Science Foundation Postdoctoral...

Last month a "Volcano Watch" article discussed the bicentennial of the first visit of westerners to Kīlauea caldera, led by English missionary William...

Understanding the eruptive history of volcanoes in Hawaii requires a tremendous amount of time and effort examining deposits. Typically, older...

It's been one year since Taʻū volcano in American Samoa started shaking residents of the Manuʻa Islands (Ofu-Olosega and Ta‘ū Islands). Fortunately...

Ocean swells are constantly occurring across the Earth’s oceans. These swells interact with the ocean crust below, creating continuous ocean noise...

Kīlauea’s activity from 2018 until now has been compared to cycles of summit collapse and refilling prior to 1924. However, Kīlauea also exhibited...

On August 1, 1823, an English missionary named William Ellis visited Kīlauea caldera with his Hawaiian guides on a tour of the Island of Hawaiʻi.  He...

The Center for the Study of Active Volcanoes (CSAV) is holding its annual summer International Training Course in Volcano Hazards Monitoring. This...