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  • Country
  • Volcanic Region
  • Primary Volcano Type
  • Last Known Eruption
  • 9.13°S
  • 159.82°E

  • 485 m
    1591 ft

  • 255070
  • Latitude
  • Longitude

  • Summit

  • Volcano

The Global Volcanism Program has no activity reports for Savo.

The Global Volcanism Program has no Weekly Reports available for Savo.

The Global Volcanism Program has no Bulletin Reports available for Savo.

Basic Data

Volcano Number

Last Known Eruption



1847 CE

485 m / 1591 ft


Volcano Types

Lava dome(s)

Rock Types

Andesite / Basaltic Andesite
Basalt / Picro-Basalt

Tectonic Setting

Subduction zone
Crustal thickness unknown


Within 5 km
Within 10 km
Within 30 km
Within 100 km

Geological Summary

The 6 x 7 km island of Savo consists of a forested andesitic-to-dacitic stratovolcano with a shallow, elliptical 1 x 1.5 km wide summit crater. Lava domes of historical age are located on the crater floor and its NE rim, and older domes occur on the flanks of the volcano. Pyroclastic flows and mudflows traveled down valleys from the summit crater to form debris fans along the coast. Thermal areas located in the summit crater, the south to SE flanks, and offshore include areas of steaming ground, fumaroles, small geysers, and hot springs. Spanish explorers arrived in 1568 during the first historical eruption of Savo. Pyroclastic flows during the climactic phase killed almost all inhabitants of the island, and oral traditions also note the expansion of the island on the northern side. Other eruptive episodes occurred during the mid-17th century and during the 1830s to 1840s.


The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography.

Fisher N H, 1957. Melanesia. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 5: 1-105.

Grover J C, 1958. The Solomon Islands--geological exploration and research 1953-1956. Geol Surv Brit Solomon Is Mem, 2: 1-150.

Petterson M, Cronin S, Taylor P, Tolia D, Papabatu A, Toba T, Qopoto C, 2003. The eruptive history and volcanic hazards of Savo, Solomon Islands. Bull Volc, 65: 165-181.

Eruptive History

Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).

Start Date Stop Date Eruption Certainty VEI Evidence Activity Area or Unit
[ 1865 ± 20 years ] [ Unknown ] Uncertain    
1835 ± 5 years 1847 (?) Confirmed 3 Historical Observations
1650 ± 20 years Unknown Confirmed   Radiocarbon (corrected)
1568 (in or before) Unknown Confirmed 3 Historical Observations NE crater margin

This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.




Feature Name Feature Type Elevation Latitude Longitude
Bitivogala Crater


Feature Name Feature Type Elevation Latitude Longitude
Reoka Thermal 280 m 9° 9' 0" S 159° 49' 0" E
Tavoka Thermal 200 m 9° 9' 0" S 159° 49' 0" E
Voghala Thermal 280 m 9° 8' 0" S 159° 48' 30" E
Vutusuala Thermal

Photo Gallery

The broad irregular profile of the 6 x 7 km island of Savo is seen from an approaching boat. This forested stratovolcano has been the source of major historical eruptions, which included pyroclastic flows that devastated much of the island. The summit contains a 1 x 1.5 km wide crater. Lava domes are located on its floor, NE rim, and on the outer flank of the volcano. Thermal areas located in the summit crater, along the flanks of the volcano and offshore include fumaroles and small geysers.

Photo by Nick Varley (University of Colima).

Smithsonian Sample Collections Database

There are no samples for Savo in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.

Affiliated Sites

Large Eruptions of Savo Information about large Quaternary eruptions (VEI >= 4) is cataloged in the Large Magnitude Explosive Volcanic Eruptions (LaMEVE) database of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).
WOVOdat WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore.
EarthChem EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility Integrated Earth Data Applications (IEDA). IEDA is a collaborative effort of EarthChem and the Marine Geoscience Data System (MGDS).
MODVOLC - HIGP MODIS Thermal Alert System Using infrared satellite Moderate Resolution Imaging Spectroradiometer (MODIS) data, scientists at the Hawai'i Institute of Geophysics and Planetology, University of Hawai'i, developed an automated system called MODVOLC to map thermal hot-spots in near real time. For each MODIS image, the algorithm automatically scans each 1 km pixel within it to check for high-temperature hot-spots. When one is found the date, time, location, and intensity are recorded. MODIS looks at every square km of the Earth every 48 hours, once during the day and once during the night, and the presence of two MODIS sensors in space allows at least four hot-spot observations every two days. Each day updated global maps are compiled to display the locations of all hot spots detected in the previous 24 hours. There is a drop-down list with volcano names which allow users to 'zoom-in' and examine the distribution of hot-spots at a variety of spatial scales.
MIROVA Middle InfraRed Observation of Volcanic Activity (MIROVA) is a near real time volcanic hot-spot detection system based on the analysis of MODIS (Moderate Resolution Imaging Spectroradiometer) data. In particular, MIROVA uses the Middle InfraRed Radiation (MIR), measured over target volcanoes, in order to detect, locate and measure the heat radiation sourced from volcanic activity.