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November 27, 2020

Study: 2018 Kīlauea Volcano Eruption Triggered by Decade-Long Pressure Buildup

The 2018 eruption of Kīlauea Volcano, one of the largest volcanic events in Hawaiʻi in 200 years,  was triggered by a relatively small and rapid change at the Big Island volcano after a decade-long build-up of pressure in the upper parts of the volcano, according to a recent study published in Nature Communications.
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October 05, 2020

Volcano Watch — That Didn’t Feel Like a Magnitude-4? What do Earthquake Measurements Mean?

This is why the MMI scale is the best way to communicate the relative effects among earthquakes. Values are derived from direct observations of the public and will give the best sense of shaking experienced in different regions.
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August 16, 2020

HVO: Water Was in Kīlauea Caldera Before the 2018 Summit Collapse

Kīlauea monitoring data for the past month show variable but typical rates of seismicity and ground deformation, low rates of sulfur dioxide emissions, and only minor geologic changes since the end of eruptive activity in September 2018.
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July 09, 2020

Study: Restoration of Forests with Active Rapid ‘Ōhi‘a Death Infections May Be Possible

For the first time, researchers have shown that native ʻōhiʻa seedlings can survive for at least a year in areas that have active mortality from Rapid ʻŌhiʻa Death, or ROD, a fungal disease that is devastating to this dominant and culturally important tree in Hawaiian forests. Researchers from the US Geological Survey in Hawaiʻi say his information can be useful to land managers and homeowners as they prioritize conservation actions.
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February 19, 2020

Endangered Plant Survives Volcanic Hotspot, But is Challenged by Invasive Species

From the U.S. Geological Survey Hawaiian Volcano Observatory Volcano Watch, a weekly article and activity update written by U.S. Geological Survey Hawaiian Volcano Observatory scientists and affiliates.
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June 29, 2019

Getting in the “Rift” Zone: Why & How They Erupt

The rift zones extend from Kīlauea Caldera and, like the summit region, are prone to volcanic activity. But why are the rift zones so active?
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June 27, 2019

Interpreting Surface Deformation at Kīlauea

Interferometric Synthetic Aperture Radar calculates the difference between two radar images taken at different times but looking at the same place on Earth.
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June 13, 2019

Seeing the Earth Shake On Your Screen

All seismic data are freely available to the public. How can you view these ground motion data? There are several ways.
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June 07, 2019

New Eyes in the Sky for Monitoring Hawaiian Volcanoes

The 2018 eruption of Kīlauea Volcano presented an opportunity for the U.S. Geological Survey to adopt unmanned aerial systems to better monitor the eruption.
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June 01, 2019

USGS to Survey Kīlauea Volcano From its Summit to Kumukahi

USGS Hawaiian Volcano Observatory scientists have wanted to resurvey Kīlauea Volcano’s ground surface to document changes brought about by the Puna eruption.
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May 30, 2019

Volcano Observatory to Remain on Hawai‘i Island

The Hawaiian Volcano Observatory or HVO, was damaged beyond repair during the recent Kīlauea eruption.  At one point, there was discussion of possibly moving the facility to Oʻahu.
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May 30, 2019

50th Anniversary of Kīlauea’s Mauna Ulu Eruption

May 24, 2019, is a notable date in Kīlauea Volcano’s history. It was also the one-year anniversary of several key events in the 2018 Kīlauea eruption.
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May 09, 2019

New Insights Gained From Kīlauea Volcano’s 2018 Summit Collapses

A year ago, USGS Hawaiian Volcano Observatory scientists and Island of Hawaiʻi residents were in the throes of an historically unprecedented series of events for Kīlauea.
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May 03, 2019

What We’ve Learned From Kīlauea’s 2018 Lower East Rift Zone Eruption

May 3, 2019, marks the one-year anniversary of the start of Kīlauea Volcano’s 2018 lower East Rift Zone eruption.
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April 25, 2019

What Caused—Or Did Not Cause—The 2018 Kīlauea Eruption?

When a major geologic event occurs, scientists who study such events and the people who are directly or indirectly impacted by it seek to understand its cause.
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