In the event of a US Government shutdown, the Global Volcanism Program will remain OPEN through at least Saturday, October 7, by using prior year funds. Visit si.edu for updates.
The Global Volcanism Program has no activity reports for Grensdalur.
The Global Volcanism Program has no Weekly Reports available for Grensdalur.
The Global Volcanism Program has no Bulletin Reports available for Grensdalur.
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.
Thermal |
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| Feature Name | Feature Type | Elevation | Latitude | Longitude |
| Hveragerdi | Thermal | |||
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The Global Volcanism Program is not aware of any Holocene eruptions from Grensdalur. If this volcano has had large eruptions (VEI >= 4) prior to 10,000 years ago, information might be found on the Grensdalur page in the LaMEVE (Large Magnitude Explosive Volcanic Eruptions) database, a part of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).
There is no Deformation History data available for Grensdalur.
There is no Emissions History data available for Grensdalur.
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: Pjorsarnes Publisher: DMA Country: Iceland Year: 1989 Series: C761 Map Type: Topographic Scale: 1:50,000 |
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Title: Selvogur Vestmannaeyjar Publisher: Icelandic Hydrographic Service (Sjomaellingar) Country: Iceland Year: 1988 Series: S Coast Maps Map Type: Bathymetric Scale: 1:100,000 |
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Title: Sudvesturland Publisher: Geodetic Institute, Landmaelingar Islands Country: Iceland Year: 1987 Map Type: Topographic Scale: 1:250,000 |
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Title: Geomorphology of Iceland Publisher: University of Goteborg, Dept Phys Geog Country: Iceland Year: 1984 Map Type: Geology (Geomorphology) Scale: 1:1,750 |
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Title: Geographical Names of Iceland Publisher: University of Goteborg, Dept Phys Geog Country: Iceland Year: 1984 Map Type: Unknown Scale: 1:1,750 |
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Title: Selfoss Publisher: US Army Map Service Country: Iceland Year: 1965 Series: C761 Map Type: Topographic Scale: 1:50,000 |
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Title: Hengill Publisher: US Army Map Service Country: Iceland Year: 1965 Series: C761 Map Type: Topographic Scale: 1:50,000 |
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Title: Hraungerdhi Publisher: US Army Map Service Country: Iceland Year: 1962 Series: C762 Map Type: Topographic Scale: 1:50,000 |
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Title: Mosfell Publisher: US Army Map Service Country: Iceland Year: 1950 Series: C762 Map Type: Topographic Scale: 1:50,000 |
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There are no samples for Grensdalur in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.
| Catalogue of Icelandic Volcanoes (Link to Grensdalur) | The Catalogue of Icelandic Volcanoes is an interactive, web-based tool, containing information on volcanic systems that belong to the active volcanic zones of Iceland. It is a collaboration of the Icelandic Meteorological Office (the state volcano observatory), the Institute of Earth Sciences at the University of Iceland, and the Civil Protection Department of the National Commissioner of the Iceland Police, with contributions from a large number of specialists in Iceland and elsewhere. This official publication is intended to serve as an accurate and up-to-date source of information about active volcanoes in Iceland and their characteristics. The Catalogue forms a part of an integrated volcanic risk assessment project in Iceland GOSVÁ (commenced in 2012), as well as being part of the effort of FUTUREVOLC (2012-2016) on establishing an Icelandic volcano supersite. |
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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. |
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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 Grensdalur. 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 Grensdalur. Users can customize the data search based on station or network names, location, and time window. Requires Adobe Flash Player. |
| Large Eruptions of Grensdalur | 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). |
Steam plumes, newly formed after a May 2008 earthquake, rise from the Reykir ("smokes" in Icelandic) geothermal area, with the town of Hveragerdi in the background. The Hveragerdi geothermal field lies within the small Pleistocene Grensdalur volcanic system, the oldest of three volcanic systems in the Hengill area. The geothermal field include fumaroles, hot springs and pools, mud pots, and geysers, and provides heat to the town of Hveragerdi.
