The Global Volcanism Program has no activity reports for Ilopango.
The Global Volcanism Program has no Weekly Reports available for Ilopango.
The Global Volcanism Program has no Bulletin Reports available for Ilopango.
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|
|Pavas, Cerro las||Stratovolcano||1025 m||13° 43' 0" N||88° 56' 0" W|
|Feature Name||Feature Type||Elevation||Latitude||Longitude|
|Buena Vista, Cerro||Dome||822 m||13° 43' 0" N||89° 1' 0" W|
|Dome||830 m||13° 46' 0" N||88° 56' 0" W|
|Dome||820 m||13° 45' 0" N||88° 56' 0" W|
|Delicias, Cerro las||Dome||13° 45' 0" N||89° 4' 0" W|
|Espino, Cerrito el||Dome||13° 46' 0" N||89° 1' 0" W|
|Micos, Cerro de los||Dome||13° 39' 0" N||89° 2' 0" W|
|Palma Sur, Cerrito la||Dome||13° 43' 0" N||89° 4' 0" W|
|Patos, Islas de los||Dome||13° 39' 0" N||89° 2' 0" W|
|Punta Zacatepeque||Dome||13° 42' 0" N||89° 2' 0" W|
|Dome||450 m||13° 40' 18" N||89° 3' 12" W|
|Rosario, Cerro del||Dome||700 m||13° 46' 0" N||88° 54' 0" W|
|San Jacinto, Cerro||Dome||13° 41' 0" N||89° 10' 0" W|
|San Pedro, Lomas de||Dome||13° 47' 0" N||89° 0' 0" W|
|Tecoluca, Cerro||Dome||13° 46' 0" N||89° 1' 0" W|
There is data available for 2 confirmed Holocene eruptive periods.
1879 Dec 31 - 1880 Mar 26 ± 5 days Confirmed Eruption Max VEI: 3
|Episode 1 | Eruption Episode||Islas Quemadas, Lake Ilopango|
|1879 Dec 31 - 1880 Mar 26 ± 5 days||Evidence from Observations: Reported|
|Following severe earthquakes 20-31 December 1879, the water level in Lake Ilopango rose over 6-11 January 1880, accompanying growth of the Islas Quemadas lava dome. By 9 January discharge down the Jiboa River was strong enough to flood the valley, destroying the town of Atuscatla and killing many cattle. A huge column of ash and incandescent rocks was observed on 20 January and the dome breached the surface on 23 January; three periods of dome growth accompanied by explosions ensued. The dome reached a height of 50 m above the lake before explosions 5 March destroyed most of the subaerial portion. CAVW considers the onset of seismicity on 31 December 1879 to mark the onset of dome growth and notes that the eruption ended in late March.|
List of 8 Events for Episode 1 at Islas Quemadas, Lake Ilopango
0450 ± 30 years Confirmed Eruption Max VEI: 6
|Episode 1 | Eruption Episode||Tierra Blanca Joven|
|0450 ± 30 years - Unknown||Evidence from Isotopic: 14C (calibrated)|
|The massive Tierra Blanca eruption (14C dated 260 ± 114 CE) destroyed early Mayan cities and resulted in the formation of the Ilopango Caldera (Sheets, 1979). AMS radiocarbon dating combined with careful analysis of previous dates provided a weighted age of 1605 ± 20 yrs BP (Dull et al., 2001). This has a 2-sigma calendar age of 408-536 CE, with the probability distribution weighted toward the early part of this range, between 415 and 476 CE. Dull et al. (2001) noted evidence for sudden evacuation of archaeological sites over broad areas after about 400 CE, and Sheets (2004) estimated 30,000 fatalities within the area swept by pyroclastic flows. The 71 km3 airfall tephra volume (Kutterolf et al., 2008) does not include the unknown volume of pyroclastic flows.|
List of 12 Events for Episode 1 at Tierra Blanca Joven
There is no Deformation History data available for Ilopango.
There is no Emissions History data available for Ilopango.
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.
Title: Bath of Gulf of Mexico & Caribbean Sea
Publisher: AAPG, Williams & Heintz Map Corp.
Country: US/ C.Am/ S.Am
Map Type: Bathymetric
Title: Belize, El Salvador, Guatemala, Honduras, Mexico
Publisher: DMA Aerospace Center
Country: NW C Am (GU ES HO)
Map Type: Topographic
There are no samples for Ilopango in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.
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.|
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 Ilopango. 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 Ilopango. 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 Ilopango||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).|