HILO, Hawaii (KHON2) — The Hawaiian Volcano Observatory (HVO) on the Big Island announced on Thursday, Jan. 7, the opening of a new lab that will help scientists study volcanic samples known as tephra ...

Kilauea’s recent summit eruptions and lava lakes are exciting for residents, visitors, and scientists. However, Klauea has had numerous explosive eruptions in the last 2,000 years that remain poorly ...

Tephra is any type and size of rock fragment that is forcibly ejected from a volcano and travels an airborne path during an eruption. Examples include ash, bombs, scoria, and shards of volcanic glass ...

STEAMING explosions, dubbed tephra jets, have been captured above the Pacific Ocean off Hawaii’s Big Island as Kilauea’s burning volcanic rivers react violently with seawater - but what exactly is a ...