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The Center for the Study of Active Volcanoes

The Center for the Study of Active Volcanoes (CSAV), on the Big Island of Hawaiʻi, operates out of the University of Hawaiʻi at Hilo. The Center is a training and outreach program founded by Robert W. Decker. CSAV's mission is to provide information on volcanic and natural hazards that occur in Hawaiʻi and worldwide. CSAV has been operating since 1989, and is a cooperative program of the University of Hawaiʻi at Hilo, the Hawaiian Volcano Observatory (HVO), and the University of Hawaiʻi at Mānoa (UHM).

Closeup of map

CSAV is digitally archiving old slides and the Volcano House Register!

CSAV en español

CSAV in Spanish! Enjoy our Spanish version!

SmugMug logo against horizon at dusk

Visit our SmugMug Gallery for high-res photos of volcanoes!

Lava flow with youtube logo on top of it

Visit our CSAV channel on YouTube for dozens of outstanding mini videos!

Vimeo logo superimposed on glowing caldera

YouTube not available? CSAV Channel is up and running on Vimeo!

CSAV Facebook logo

Keep up-to-date on Facebook for CSAV events & hazard updates.

Flood in Pahala

Visit Natural Hazards and protect yourself from floods, earthquakes, etc!

Robert Decker

Read about the Robert Decker Endowment Fund!

Lightning

Why is there Lightning and a waterspout in this eruption? Find out!

two residents on bicyles watch lava cover a roadway
Residents watch as lava covers the intersection of Highways 130 & 137 at the western edge of Kalapana. Photo taken 17 July 2010
two residents on bicyles watch lava cover a roadway
Lava advances towards a roadway. Photo taken in 1990 in Kalapana. Photo credit: USGS Hawaiian Volcano Observatory