Filter Total Items: 1,574
Date published: November 21, 2018

Volcano Watch - We're giving thanks for clean air, but what's that new smell?

In this season of giving thanks, Island of Hawai‘i residents and visitors can be thankful for the return of good air quality, generally free of volcanic air pollution.

Date published: November 15, 2018

Volcano Watch - The Hawaiian Volcano Observatory adapts to recent changes

November 2018. Has it already been six months since lava began flowing through Hawai‘i County's lower Puna District? Has it only been three months since activity at fissure 8 ended rather abruptly?

Date published: November 8, 2018

Volcano Watch - A summit collapse 150 years ago had similarities to the 2018 collapse

The prolonged yet dramatic partial collapse of Kīlauea caldera this past summer was the first to be observed in detail and the largest measured by subsidence volume of more than a dozen summit collapses in the past 200 years. The earliest known collapses (1823, 1832, and 1840) were large in subsidence volume but the process was not recorded by witnesses.

Date published: November 1, 2018

Volcano Watch - How are lava-flow maps made during an eruption?

During Kīlauea Volcano's recent lower East Rift Zone (LERZ) eruption, lava-flow maps were a staple of the public outreach effort by the USGS Hawaiian Volcano Observatory (HVO).

Date published: October 25, 2018

Volcano Watch - Kīlauea 2018 events mark a watershed for volcano science

The 2018 summit collapse and lower East Rift Zone eruption at Kīlauea Volcano were dramatic and, for many Island of Hawai‘i residents, tragic events. As with all eruptive crises, these events offered exceptional opportunities to learn more about how volcanoes work and to answer some "bigger picture" questions.

Date published: October 25, 2018

Volcanic threat assessment helps prioritize risk reduction efforts at U.S. volcanoes

The U.S. Geological Survey assesses active and potentially active volcanoes in the U.S., focusing on history, hazards and the exposure of people, property and infrastructure to harm during an eruption. The findings are in the newly published 2018 Update to the U.S. Geological Survey National Volcanic Threat Assessment.

Date published: October 11, 2018

Volcano Watch - Aftershocks of the 2018 magnitude-6.9 earthquake expected to continue

On May 4, 2018, a powerful magnitude-6.9 earthquake on the south flank of Kīlauea Volcano shook the Island of Hawai‘i. It was the largest quake in Hawaii in 43 years. Today, more than five months later, smaller-magnitude earthquakes in the same area are still occurring.

Date published: October 9, 2018

New USGS Data Release Product

Data Release: Volcanic ash leachate and rainwater chemistry from increased 2018 activity of Kīlauea Volcano, Hawaiʻi

Date published: October 4, 2018

Volcano Watch - Volcano collapses mark the beginning and end of USGS scientist’s career

My 37-year stint with the U.S. Geological Survey—16 years at the Cascades Volcano Observatory (CVO) and 21 at the Hawaiian Volcano Observatory (HVO)—ends this month.

Date published: September 27, 2018

Volcano Watch - Tiltmeters measure tiny changes that can have big consequences

The USGS Hawaiian Volcano Observatory (HVO) uses a diverse set of instruments to monitor active volcanoes in Hawaii. These include seismometers, gas sensors, Global Positioning System (GPS) stations, and webcams. Each provides a unique type of data critical to understanding volcanic systems.

Date published: September 27, 2018

Preliminary summary of Kīlauea Volcano's 2018 lower East Rift Zone eruption and summit collapse

Overview of Kīlauea Volcano's activity from April 30 through September 22, 2018.