The Global Volcanism Program has no activity reports for Yunaska.
The Global Volcanism Program has no Weekly Reports available for Yunaska.
The Global Volcanism Program has no Bulletin Reports available for Yunaska.
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.
Craters |
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| Feature Name | Feature Type | Elevation | Latitude | Longitude |
| Coats Caldera | Caldera | |||
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There is data available for 3 confirmed Holocene eruptive periods.
1937 Nov 3 - 1937 Nov 4 Confirmed Eruption Max VEI: 3
| Episode 1 | Eruption Episode | ||||||||||||||||||||||||||||||
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| 1937 Nov 3 - 1937 Nov 4 | Evidence from Observations: Reported | |||||||||||||||||||||||||||||
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List of 4 Events for Episode 1
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[ 1929 ] Uncertain Eruption
[ 1873 ] Uncertain Eruption
1830 Confirmed Eruption Max VEI: 2
| Episode 1 | Eruption Episode | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1830 - Unknown | Evidence from Observations: Reported | ||||||||||||||||||||||||
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List of 3 Events for Episode 1
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1824 Confirmed Eruption Max VEI: 3
| Episode 1 | Eruption Episode | ||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1824 - Unknown | Evidence from Observations: Reported | |||||||||||||||||||
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List of 2 Events for Episode 1
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[ 1817 ] Uncertain Eruption
There is data available for 1 deformation periods. Expand each entry for additional details.
| Start Date: 2004 | Stop Date: 2009 | Direction: Subsidence | Method: InSAR |
| Magnitude: Unknown | Spatial Extent: Unknown | Latitude: Unknown | Longitude: Unknown |
Remarks: Subsidence on the north flank due to contraction of 1937 lava flow. | |||
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Averaged deformation images of Yunaska Island produced by stacking all available InSAR images from 2004?2009 from the following tracks: a track 036 (ascending), b track 158 (descending), c track 265 (ascending), and d track 430 (descending). Dashed line delineates subsiding area on the north flank of Yunaska volcano extending from nearly the rim of Caldera II to the north shore. A full cycle of colors (i.e., one interferometric fringe) represents 28 mm/year of surface displacement along the LOS From: Lu and Dzurisin 2014. |
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Reference List: Lu and Dzurisin 2014.
Full References:
Lu Z, Dzurisin D, 2014. InSAR imaging of Aleutian volcanoes: monitoring a volcanic arc from space. Springer-Verlag Berlin Heidelberg. https://doi.org/10.1007/978-3-642-00348-6
There is no Emissions History data available for Yunaska.
The maps shown below have been scanned from the GVP map archives and include the volcano on this page. Clicking on the small images will load the full 300 dpi map. Very small-scale maps (such as world maps) are not included. The maps database originated over 30 years ago, but was only recently updated and connected to our main database. We welcome users to tell us if they see incorrect information or other problems with the maps; please use the Contact GVP link at the bottom of the page to send us email.
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Title: Samalga Island Publisher: US Department of Commerce, NOAA National Ocean Service Country: United States Year: 1987 Map Type: Bathymetric Scale: 1:250,000 |
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Title: Dutch Harbor Publisher: US Department of Commerce, NOAA National Ocean Service Country: United States Year: 1987 Series: Section Aero Chart Map Type: Navigation Scale: 1:500,000 |
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Title: United States Publisher: DMA Aerospace Center Country: United States Year: 1987 Series: ONC Map Type: Topographic Scale: 1:1,000,000 |
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Title: Saint George Basin Regional Map Publisher: USDI Minerals Management Service Country: United States Year: 1984 Series: OCSRM maps Map Type: Bathymetric Scale: 1:1,000,000 |
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Title: Magnetic Map of N Pacific Ocean Publisher: US Department of Commerce, NOAA National Ocean Service Country: United States Year: 1973 Series: Seamap Map Type: Geophysical (Magnetic) Scale: 1:1,000,000 |
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Title: Gravity Map of N Pacific Ocean Publisher: US Department of Commerce, NOAA National Ocean Service Country: United States Year: 1973 Series: Seamap Map Type: Geophysical (Gravity) Scale: 1:1,000,000 |
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Title: Amukta Publisher: US Geological Survey Country: United States Year: 1951 Series: AK Recon Topo 250 Map Type: Topographic Scale: 1:250,000 |
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Title: Samalga Island Publisher: US Geological Survey Country: United States Year: 1951 Series: AK Recon Topo 250 Map Type: Topographic Scale: 1:250,000 |
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There are no samples for Yunaska in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.
| Alaska Volcano Observatory (Link to Yunaska) | The Alaska Volcano Observatory (AVO) is a joint program of the U.S. Geological Survey (USGS), the Geophysical Institute of the University of Alaska Fairbanks (UAFGI), and the State of Alaska Division of Geological and Geophysical Surveys (ADGGS). AVO was formed in 1988, and uses federal, state, and university resources to monitor and study Alaska's hazardous volcanoes, to predict and record eruptive activity, and to mitigate volcanic hazards to life and property. |
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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. |
| Volcanic Hazard Maps | The IAVCEI Commission on Volcanic Hazards and Risk has a Volcanic Hazard Maps database designed to serve as a resource for hazard mappers (or other interested parties) to explore how common issues in hazard map development have been addressed at different volcanoes, in different countries, for different hazards, and for different intended audiences. In addition to the comprehensive, searchable Volcanic Hazard Maps Database, this website contains information about diversity of volcanic hazard maps, illustrated using examples from the database. This site is for educational purposes related to volcanic hazard maps. Hazard maps found on this website should not be used for emergency purposes. For the most recent, official hazard map for a particular volcano, please seek out the proper institutional authorities on the matter. |
| 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. |
| MODVOLC Thermal Alerts | 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. |
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Sentinel Hub Playground
Sentinel Hub EO Browser |
The Sentinel Hub Playground provides a quick look at any Sentinel-2 image in any combination of the bands and enhanced with image effects; Landsat 8, DEM and MODIS are also available. Sentinel Hub is an engine for processing of petabytes of satellite data. It is opening the doors for machine learning and helping hundreds of application developers worldwide. It makes Sentinel, Landsat, and other Earth observation imagery easily accessible for browsing, visualization and analysis. Sentinel Hub is operated by Sinergise |
| IRIS seismic stations/networks | Incorporated Research Institutions for Seismology (IRIS) Data Services map showing 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 Yunaska. 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. |
| UNAVCO GPS/GNSS stations | Geodetic Data Services map from UNAVCO showing the location of GPS/GNSS stations from all available networks (permanent or temporary) within a radius of 20 km from the given location of Yunaska. Users can customize the data search based on station or network names, location, and time window. Requires Adobe Flash Player. |
| DECADE Data | The DECADE portal, still in the developmental stage, serves as an example of the proposed interoperability between The Smithsonian Institution's Global Volcanism Program, the Mapping Gas Emissions (MaGa) Database, and the EarthChem Geochemical Portal. The Deep Earth Carbon Degassing (DECADE) initiative seeks to use new and established technologies to determine accurate global fluxes of volcanic CO2 to the atmosphere, but installing CO2 monitoring networks on 20 of the world's 150 most actively degassing volcanoes. The group uses related laboratory-based studies (direct gas sampling and analysis, melt inclusions) to provide new data for direct degassing of deep earth carbon to the atmosphere. |
| Large Eruptions of Yunaska | 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 summit caldera rim of Yunaska is seen from an older volcanic center on the western side of the island. The younger eastern complex contains two nested calderas. A young lava flow to the far right descended through a notch in the caldera rim. The peaks in the background are (left-to-right) of Carlisle, Cleveland, and Herbert volcanoes.
