| Country | Philippines |
| Volcanic Region | Eastern Philippine Volcanic Arc |
| Landform | Volc Type | Composite | Stratovolcano |
| Last Known Eruption | Pleistocene |
| Coordinates | 10.8805°N, 124.8651°E |
| Elevation | 834 m (2,736 ft) |
| Volcano Number | 272070 |
 Google Earth Placemark with Features
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 Cite Volcano Profile
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The Global Volcanism Program has no Weekly Volcanic Activity Reports available for Mahagnao.
The Global Volcanism Program has no Bulletin Reports available for Mahagnao.
The Global Volcanism Program has no Weekly Reports available for Mahagnao.
The Global Volcanism Program has no Bulletin Reports available for Mahagnao.
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There is data available for 0 confirmed eruptive period.
[ 1895 Jul 2 ± 182 days ] Discredited Eruption
The Commission on Volcanology (COMVOL) (1981) noted that the volcano "was reported to have erupted in 1895 (?)" with no other details or source citation. Although fumarolic activity was described, no eruptions were listed by Neumann van Padang (CAVW, 1953), which reviewed multiple sources from the early 1900s. Later Philippine catalogs by PHIVOLCS did not list this volcano as having observed eruptions.
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.
Synonyms |
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| Mahagnaw | Burauen | ||||
Cones |
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| Feature Name | Feature Type | Elevation | Latitude | Longitude |
| Kasiboi
Casiboy Manacagan Himaicagan Caolangojan |
Cone | 10° 53' 0.00" N | 124° 53' 0.00" E | |
Craters |
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| Feature Name | Feature Type | Elevation | Latitude | Longitude |
| Danao, Lake | Crater | |||
| Malagsom, Lake | Crater | |||
Thermal |
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| Feature Name | Feature Type | Elevation | Latitude | Longitude |
| Danan
Pangujaan |
Thermal | 10° 52' 30.00" N | 124° 53' 0.00" E | |
| To-Od Grande | Thermal | |||
| To-Od Pequena | Thermal | |||
There are no samples for Mahagnao in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.
| Copernicus Browser | The Copernicus Browser replaced the Sentinel Hub Playground browser in 2023, to provide access to Earth observation archives from the Copernicus Data Space Ecosystem, the main distribution platform for data from the EU Copernicus missions. |
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WOVOdat
Single Volcano View Temporal Evolution of Unrest Side by Side Volcanoes |
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.
GVMID Data on Volcano Monitoring Infrastructure The Global Volcano Monitoring Infrastructure Database GVMID, is aimed at documenting and improving capabilities of volcano monitoring from the ground and space. GVMID should provide a snapshot and baseline view of the techniques and instrumentation that are in place at various volcanoes, which can be use by volcano observatories as reference to setup new monitoring system or improving networks at a specific volcano. These data will allow identification of what monitoring gaps exist, which can be then targeted by remote sensing infrastructure and future instrument deployments. |
| EarthScope Consortium SAGE seismic stations/networks | EarthScope Consortium operates the NSF Geodetic Facility for the Advancement of Geoscience (GAGE) and NSF Seismological Facility for the Advancement of Geoscience (SAGE). The linked map shows the location of seismic stations from all available networks (permanent or temporary) within a radius of 0.18° (about 20 km at mid-latitudes) from the given location of Mahagnao. Users can customize a variety of filters and options in the left panel. Note that if there are no stations are known the map will default to show the entire world with a "No data matched request" error notice. |
| Large Eruptions of Mahagnao | 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). |
| 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). |
The Mahagnao volcanic complex is in the center of this 20 August 2018 Sentinel-2 satellite image (N is at the top), which is approximately 10 km across. The complex includes the Kasiboi and Danan cones and has current geothermal activity.