Filter Total Items: 300
Date published: October 22, 2020

Volcano Watch — Charcoal, a game changer for understanding processes in young volcanic terraines

One of the fundamental premises of geology is that the "key to understanding the future is to understand the past."  In order to forecast how a volcano will behave, geologists must map the deposits from past eruptions and determine the ages of those deposits. Radiocarbon dating is our principal tool of use.

Date published: September 17, 2020

Volcano Watch — HVO camera network reconfiguration and upgrades coming soon!

Over the past two decades, the USGS Hawaiian Volcano Observatory (HVO) has set up a camera network system to monitor visual changes at Kīlauea and Mauna Loa volcanoes. This network was designed for the volcanic activity of the time and captured the two long-lived eruptions of Kīlauea at the summit and East Rift Zone up close.

Date published: September 8, 2020

New USGS Data Release - Campaign GPS measurements on the Island of Hawai‘i collected by the Hawaiian Volcano Observatory in 2019

The USGS has recently published a "Campaign GPS measurements on the Island of Hawai‘i collected by the Hawaiian Volcano Observatory in 2019." This data release includes all 2019 campaign survey GPS sites on Kīlauea and Mauna Loa on the Island of Hawai‘i; it also includes semi-permanent stations in Kīlauea's Middle...

Date published: June 8, 2020

Updates to HVO's Kīlauea and Mauna Loa "Geology & History" Webpages

HVO has updated the Geology & History webpages for Kīlauea and Mauna Loa volcanoes. These pages now include maps and links to revised tables summarizing volcanic activity over the past ~200 years at each volcano.

You can also access the...

Date published: April 30, 2020

Photo and Video Chronology - Mauna Loa - April 30, 2020


Mauna Loa summit mission-critical fieldwork: MultiGAS installation

Date published: April 30, 2020

Volcano Watch — Looking for maps? GIS data? Try the HVO publications page!

Many messages to AskHVO ( request resources relating to geologic maps and geographic information systems (GIS) data. "Is there a map of a certain ...

Date published: April 2, 2020

Volcano Watch — HVO looks to the past to better understand future Mauna Loa eruptions

Mauna Loa, the largest active volcano on Earth, has erupted, on average, every 5–6 years during the past 3,000 years.

Date published: March 19, 2020

Volcano Watch — HVO's geological sample collections are an important resource

In the past, HVO would occasionally post images of people collecting lava samples on our website. These photos usually...

Date published: March 12, 2020

Volcano Watch — Old bombs found on Mauna Loa: The rest of the story (Part 2)

Last week's Volcano Watch provided details of events leading up to the dropping of bombs on a Mauna Loa lava flow on December 27, 1935. Here's the rest of the story.