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Magma: What’s hot and what’s not

| | Nov 9 2017 - 3:40pm | Comments

Scientists at the U.S. Geological Survey’s Hawaiian Volcano Observatory routinely collect lava samples from Kilauea and use the chemistry of these samples to infer the temperature of magma (molten rock below Earth’s surface).

  1. | Posted: Apr 5 2016 - 11:16am

    The U.S. Geological Survey’s Hawaiian Volcano Observatory is excited to welcome geophysicist Brian Shiro to its team. Shiro is HVO’s new seismic network manager, a key position in charge of monitoring earthquakes, one of the most important tools we have for understanding active volcanoes. He replaces Wes Thelen, who transferred to the USGS Cascades Volcano Observatory.

  2. | Posted: Mar 13 2016 - 1:30am

    The ongoing eruption at Kilauea Volcano’s summit began on March 19, 2008. Since that time, Island of Hawaii residents have had to cope with the challenges of increased vog and its effects.

  3. | Posted: Mar 6 2016 - 1:30am

    U.S. Geological Survey Hawaiian Volcano Observatory Geologist Don Swanson was recently named as the recipient of two prestigious awards.

  4. | Posted: Feb 28 2016 - 1:30am

    Despite not being in the headlines, Mauna Loa continues to be in a state of unrest based on seismic and deformation monitoring data.

  5. Posted: Feb 22 2016 - 8:15am

    At 9:23 a.m., Feb. 12 a magnitude-4.1 earthquake occurred beneath Kilauea Volcano’s south flank. But this is probably not news to many “Volcano Watch” readers. Shaking from the earthquake was felt throughout the Island of Hawaii, with reports to the USGS “Did you feel it?” website ( from as far away as Captain Cook and Holualoa on the west side of the island.

  6. | Posted: Feb 14 2016 - 1:30am

    In recent weeks, the USGS Hawaiian Volcano Observatory has received a number of calls from local residents saying essentially: “Hey, is something up with Kilauea’s eruptions? The plumes at Halemaumau and Puu Oo seem to be enormous lately.”

  7. | Posted: Feb 7 2016 - 1:30am

    In 1880-1881, a lava flow from Mauna Loa came very close to entering Hilo Bay. In trying to reconstruct the timeline of this flow for a recent Volcano Awareness Month presentation, we tracked down many old place names mentioned in newspaper reports of the lava’s progress. One such name that came up repeatedly is Kalanakamaa gulch (“kahawai o Kalanakamaa”).

  8. | Posted: Jan 31 2016 - 1:31am

    As the 2016 Volcano Awareness Month comes to an end, so too does our series of “Volcano Watch” articles exploring the geology of the Hawaiian Islands. This week, we conclude our journey with the Island of Hawaii.

  9. Posted: Jan 28 2016 - 1:00pm

    As part of Volcano Awareness Month, our January “Volcano Watch” articles are taking us on a geologic tour of the Hawaiian Islands. Today’s stop: Maui, as well as the islands of Lanai, Molokai, and Kahoolawe, all of which form Maui County.

  10. | Posted: Jan 18 2016 - 9:51am

    January is Volcano Awareness Month, during which our “Volcano Watch” articles are exploring the geology of the Hawaiian Islands. The series continues this week with a look at Oahu.

  11. | Posted: Jan 13 2016 - 4:02pm

    Throughout January, the USGS Hawaiian Volcano Observatory, in cooperation with Hawaii Volcanoes National Park and the University of Hawaii at Hilo will offer public talks around the island. For the complete schedule and details, visit HVO’s website at

  12. | Posted: Jan 4 2016 - 10:21am

    What do actor Mel Gibson, football quarterback Eli Manning, and Kilauea Volcano’s ongoing East Rift Zone eruption at Puu Oo have in common? They all share the same birthday.

  13. | Posted: Dec 28 2015 - 3:34pm

    During the past weeks, West Hawaii Today has been taking a closer look at each of the volcanoes on and around Hawaii Island. This week, the final edition of the series: Mahukona.

  14. | Posted: Dec 28 2015 - 3:33pm

    During the past weeks, West Hawaii Today has been taking a closer look at each of the volcanoes on and around Hawaii Island. This week: Kohala Mountain. The final edition of this series publishes Nov. 23.

  15. | Posted: Dec 28 2015 - 3:32pm

    Over the next few weeks, West Hawaii Today will be taking a closer look at each of the volcanoes on and around Hawaii Island. This week: Mauna Kea.