Wednesday | September 20, 2017
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Tephra deposit names: Out with the old, in with the new

| | Sep 2 2017 - 10:56pm | Comments

Sometimes you just have to sit down and do it. Everyone is faced with this challenge at one time or another and scientists are no exception. Our research into the explosive history of Kilauea Volcano came to just such a head earlier this year.

  1. | Posted: Sep 2 2017 - 10:56pm

    Sometimes you just have to sit down and do it. Everyone is faced with this challenge at one time or another and scientists are no exception. Our research into the explosive history of Kilauea Volcano came to just such a head earlier this year.

  2. | Posted: Aug 26 2017 - 10:02pm

    The USGS Hawaiian Volcano Observatory has a long tradition of innovation when it comes to the tools that we use to monitor the status and activity of volcanoes. Since HVO’s inception in 1912, observatory staff have developed techniques and manufactured instruments that have been used worldwide for volcano monitoring.

  3. | Posted: Aug 19 2017 - 2:22am

    The longest-lived and most voluminous rift-zone eruption of Kilauea Volcano in more than 500 years — the ongoing Puu Oo eruption — began in January 1983, and is fast approaching its 35th anniversary. So many lava flows, cones, deltas, and other features have formed from eruptions at different vents for varying periods of time that nearly every day is an anniversary for Puu Oo.

  4. | Posted: Aug 12 2017 - 8:53pm

    Thermal cameras have been used by volcanologists around the world for many years to study volcanic processes and search for signs of impending eruptions.

  5. | Posted: Jul 14 2017 - 9:26am

    The new “Geologic map of the northeast flank of Mauna Loa volcano, Island of Hawaii,” the culmination of many years of work by Hawaiian Volcano Observatory geologists, was recently published by the U.S. Geological Survey. The work was spearheaded by John P. Lockwood (affectionately known as “Mr. Mauna Loa”), who is now retired from USGS and HVO, and Frank Trusdell, HVO’s current Mauna Loa Project geologist.

  6. | Posted: Jun 10 2017 - 8:35pm

    Field engineers at the U.S. Geological Survey Hawaiian Volcano Observatory recently completed a multi-year effort to upgrade a subset of seismic stations at the summit of Kilauea Volcano.

  7. | Posted: Jun 6 2017 - 10:29am

    A diverse array of techniques is utilized to monitor volcanoes around the world, including those in Hawaii. These methods include tracking changes in the chemistry and volume of gases emitted from a volcano, recording earthquake activity, measuring changes in surface temperatures, documenting variations in eruptions, and tracking deformation of the ground surface.

  8. | Posted: May 31 2017 - 8:21am

    In 1998, a U.S. first-class postage stamp cost 32 cents and a gallon of gas in Hawaii set you back about $1.50. Apple unveiled the iMac, Google was founded, and Pokemon was released in the U.S. for Nintendo Game Boy.

  9. | Posted: May 27 2017 - 10:54pm

    Eruptions are not the only hazard created by volcanoes. They can create havoc millions of years after their fires have grown cold, because with time, their deposits can weaken to produce landslides. This happens because volcanic deposits are commonly rich in volcanic glass, a non-crystalline form of silica. In wet climates, this glass can readily transform into soft, weak minerals (primarily clay) through chemical weathering.

  10. | Posted: May 25 2017 - 9:44am

    The lava delta at Kilauea Volcano’s Kamokuna ocean entry continues to grow.

  11. | Posted: May 16 2017 - 10:50am

    Editor’s note: This week’s Volcano Watch was written by USGS Hawaiian Volcano Observatory geologist Don Swanson, who worked on Mount St. Helens before and after the 1980 eruption.

  12. | Posted: May 6 2017 - 6:26pm

    Seismology is often thought of as “earthquake science” because earthquakes — while not the only cause — are the most prolific producers of seisms, or earth shaking. The largest earthquakes ever recorded release many thousands of times more energy than the largest man-made explosions.

  13. | Posted: Apr 29 2017 - 8:23pm

    On June 13, 1950, Honolulu was suddenly blanketed by the thickest haze seen since recordkeeping began there in 1906. Interestingly, the haze was first noticed four days earlier at Johnston Island, 800 miles southwest of Oahu, and then on June 12 at Wake Island, 1,500 miles west-southwest. The total area covered by the dense haze layer was estimated to be 1.2 million square miles.

  14. | Posted: Apr 15 2017 - 8:37pm

    An estimated 1,500 visitors a day hike across the lava flow fields to view the ocean entry and search for active lava breakouts. Round-trip walking distance is far; a one-way trip to the ocean entry from Kalapana is around 4 miles. Add the chase for active lava, milling about, and your hike will quickly add up to more than 10 miles when you return.

  15. | Posted: Apr 11 2017 - 9:08am

    Hawaiian Volcano Observatory (HVO) staff, alumni and friends recently gathered to honor the long and fruitful career of Jeff Sutton, our recently retired colleague.