A little more than 10 years ago, conditions around Kilauea volcano’s summit were much different than today. The caldera floor was open to the public, and the air above it was normally clear. Halemaumau was an impressive sight, but peacefully in repose.
Editor’s note: Due to space limitations, Volcano Watch was left out of Sunday’s print edition so it is being published today. It will return to Sunday’s Home section next week.
VOLCANOS NATIONAL PARK — Most people likely know that the USGS Hawaiian Volcano Observatory (HVO) uses seismometers and Global Positioning System (GPS) receivers for monitoring volcanoes. However, fewer people may be aware of the full extent of our volcano-monitoring toolkit.
Today’s Volcano Watch begins with a question: Can you guess when the next slow slip event will happen on Kilauea Volcano’s South Flank? As a hint, the last one was in October 2015, and before then, events occurred in May 2012, February 2010, and June 2007. If this seems like a pattern, you’re right.
KAILUA-KONA — Mauna Loa continues to show signs of unrest, but activity at the world’s largest active volcano appears to be slowing down.
KAILUA-KONA — Residents living on the flanks of Hualalai can rest assured that an eruption isn’t coming any time soon.
HAWAII NATIONAL PARK — In recent weeks, the USGS Hawaiian Volcano Observatory joined forces with several other agencies to talk about Mauna Loa at community events and other public meetings.
If you visit Hawaii Volcanoes National Park’s Jaggar Museum Overlook when the wind is calm, you might be able to hear the sounds of gas bubbles bursting and lava splashing in the Halemaumau lava lake at the summit of Kilauea. What you hear is only part of a rich chorus of sounds emitted from many processes near the surface of an active lava lake.
Astute visitors to the U.S. Geological Survey Hawaiian Volcano Observatory (HVO) website may have noticed that some recent earthquakes have negative depths. This does not indicate a change in seismicity but, rather, an upgrade in HVO’s seismic data processing system.