Explore Search: Mauna Loa

GPS campaign survey stations high on the flanks of Mauna Loa offer expansive views of neighboring volcanoes

Mauna Loa

Rising gradually to more than 4 km (13,100 ft) above sea level, Mauna Loa is the largest active volcano on our planet.

Volcano Updates

Deformation Data

Questions about recent Mauna Loa unrest

Geology and History

GPS campaign survey stations high on the flanks of Mauna Loa offer expansive views of neighboring volcanoes

Mauna Loa

Rising gradually to more than 4 km (13,100 ft) above sea level, Mauna Loa is the largest active volcano on our planet.

Volcano Updates

Deformation Data

Questions about recent Mauna Loa unrest

Geology and History

Filter Total Items: 1209

Spattering lava within Kīlauea Volcano's summit vent

Volcano Watch — Kīlauea Volcano's eruptions offer picturesque viewing opportunities

Kīlauea Volcano's Pu‘u ‘Ō‘ō lava flow advances toward the ocean...

Volcano Watch — Kīlauea Volcano's Pu‘u ‘Ō‘ō lava flow advances toward the ocean

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December 18, 2008

Seismicity and deformation induced by magma accumulation at three basaltic volcanoes

Prodigious plumes present provocative puzzle...

February 11, 2016

Volcano Watch — Prodigious plumes present provocative puzzle

Threat Rankings of our Nation's geologically young volcanoes...

November 2, 2017

Threat Rankings of our Nation's geologically young volcanoes

Hawaiian volcanoes, image of the week

February 9, 2016

Hawaiian volcanoes, image of the week

Vapor billows from rocks appearing above the sea near

Volcano Watch — Submarine eruptions - volcanoes on the rise

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January 1, 2014

Petrologic insights into basaltic volcanism at historically active Hawaiian volcanoes

Collage of images of an earthquake, scientists in flood with instruments, a volcano erupting, and seismic illustration.

January 20, 2021

Volcanic plume heights from the summit of Kilauea Volcano, Hawai'i

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January 1, 2003

New insights into Kilauea's volcano dynamics brought by large-scale relative relocation of microearthquakes

Color photograph of instrument in field

Campaign gravity measurement

The 1940 cinder-and-spatter cone as seen from the caldera floor loo...

The 1940 cinder-and-spatter cone as seen from the caldera floor loo...

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January 1, 2012

Reoccurrence of 'Ōma'o in leeward woodland habitat and their distribution in alpine habitat on Hawai'i island

Color photograph of two volcanoes

February 2, 2023

February 2, 2023 — Morning view of Halema‘uma‘u eruption, Kīlauea

On the west side of Mauna Loa summit, a campaign GPS (center-right) measures its location for a period of 2–3 days

Volcano Watch — Campaign season is here! Another way HVO tracks changes on Hawaiian volcanoes

Lava flows remain active northeast of Pu‘u ‘Ō‘ō, and a lava pond in...

February 7, 2014

Lava flows remain active NE of Pu‘u ‘Ō‘ō

Lava flows remain active northeast of Pu‘u ‘Ō‘ō, and a lava pond in...

February 7, 2014

Lava flows remain active NE of Pu‘u ‘Ō‘ō

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January 1, 1985

Volcano hazards program in the United States

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January 1, 1980

Geophysical observations of Kilauea volcano, Hawaii, 1. temporal gravity variations related to the 29 November, 1975, M = 7.2 earthquake and associated summit collapse

Color plots and photographs showing Ambae eruption and impacts

September 23, 2021

Volcano Watch — Observations and impacts of the 2017–2018 Ambae, Vanuatu eruption

Aerial photograph of the Pāhala area, on the southern side of the Island of Hawaiʻi, taken on December 11, 1976

Volcano Watch — Aerial photographs and volcanic ash: Looking back to move forward

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December 5, 2007

Database for the Geologic Map of the Summit Region of Kilauea Volcano, Hawaii

Seismic event devastated Ka'ū 150 years ago ...

Seismic event devastated Ka'ū 150 years ago

USGS

Volcano Watch — An alert to changes in HVO's web updates

A closer view of Pu‘u ‘Ō‘ō, looking northwest. The vent for the Ju...

February 12, 2016

A closer view of Pu‘u ‘Ō‘ō, looking NW. The vent for the June 27th...

USGS

December 2, 2002

Volcano Watch — Coexisting with volcanoes

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October 9, 2002

Submarine alkalic through tholeiitic shield-stage development of Kïlauea volcano, Hawai’i

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January 1, 2002

Dieback of Acacia koa in Hawaii: Ecological and pathological characteristics of affected stands

Color satellite images of the Island of Hawaiʻi

October 1, 2022

“Noisy” InSAR interferogram examples covering the Island of Hawaiʻi

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January 1, 1998

Absolute paleointensity from Hawaiian lavas younger than 35 ka

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