Volcano Watch

Recent contributions of our Hawaiian Volcano Observatory (HVO) Volcano Watch column have presented very interesting observations from Kīlauea.

It's been nearly a year since Volcano Watch last focused on chemical studies of Kīlauea's lava. Well, you can rest assured that our petrologist has...

As alert volcano watchers are no doubt aware, recent activity at Kīlauea has been to "DI" for. Repeated deflation-inflation, or DI, events are...

Many here on the Big Island and around the world enjoy tracking volcanic activity in Hawai‘i through the Hawaiian Volcano Observatory Website. The...

If you follow HVO's daily updates on Kīlauea's east rift zone eruption, you are likely aware that the few remaining kipuka in the Royal Gardens...

Recently the Hawaiian Volcano Observatory (HVO) launched Volcweb, an interactive portal for exploring earthquake information on the Hawaiian Islands...

This question stems from the earthquake swarm that occurred near Nāmakanipaio Campground along the north end of the Ka‘ōiki Pali on February 22-24...

Currently, in Hawai‘i, we find ourselves in the middle of ho‘oilo, or the wet season. While we all enjoy the dry season, known as kau, ho‘oilo is, in...

Last fall, residents of Kalaupapa settlement on the Island of Moloka‘i began reporting unusual sulfurous odors coming from the direction of Kauhakō...

The U.S. Geological Survey Hawaiian Volcano Observatory recently honored Hawai‘i Island students who created winning posters celebrating the...

"Wow!" "I didn’t know that!" "Cool!"

More than 300 employees—scientists, technicians, and support staff—have worked at HVO over the past century, but the observatory could not have been...

From 1912 to 1950, HVO used mechanical seismometers, called tromometers (derived from "tremble"), that recorded the vibrations sensed by a long...

Last week's Volcano Watch described the events and efforts that led up to Thomas Jaggar's arrival on Kīlauea to start monitoring the volcano.

After almost three years of preparing and fund raising, Thomas A. Jaggar, Jr., arrived at the rim of Kīlauea on January 17, 1912, and began a...

As many are undoubtedly aware, the Hawaiian Volcano Observatory (HVO) marks the Centennial of its founding in January 2012 (see http://hvo.wr.usgs.gov...

Every December, an interesting phenomenon occurs in downtown San Francisco.

Great oaks from little acorns grow. Who would have thought that a little eruption in a small pit crater would be the seed from which a great oak of...

January 2012 is just around the corner, and staff at the USGS Hawaiian Volcano Observatory (HVO) are busily preparing for the many public events...

Hikers reaching the rim of Moku‘āweoweo, Mauna Loa's summit caldera, can gaze across the expanse of lava—erupted in 1984—that covers most of the...