Global Volcanism Program

Atitlán

Google Earth Placemark with Features

Cite Volcano Profile

Guatemala
Central America Volcanic Arc
Composite | Stratovolcano(es)
1853 CE

Country
Volcanic Region
Landform | Volc Type
Last Known Eruption

14.583°N
91.186°W
3,535 m
11,598 ft
342060

Latitude
Longitude
Summit
Elevation
Volcano
Number

The Global Volcanism Program has no activity reports available for Atitlán.

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

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

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

Suchitepequez | Zapotitlán | Suchiltepequez | Patulul

Basic Data

Volcano Number

Last Known Eruption

Elevation

Latitude
Longitude

342060

1853 CE

3,535 m / 11,598 ft

14.583°N
91.186°W

Morphology

Volcano Landform
Composite

Volcano Types
Stratovolcano(es)

Rock Types

Major
Andesite / Basaltic Andesite
Rhyolite
Dacite

Minor
Basalt / Picro-Basalt

Tectonic Setting

Subduction zone
Continental crust (> 25 km)

Population

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

2,303
70,431
664,649
8,029,695

Geological Summary

Volcán Atitlán is one of several conical stratovolcanoes in the Guatemalan highlands. Along with Tolimán to the north, it forms a dramatic backdrop to Lake Atitlán. The summit directly overlies the inferred margin of the Pleistocene Atitlán III caldera and is the highest of three large post-caldera stratovolcanoes constructed near the southern caldera rim. The volcano consequently post-dates the eruption of the voluminous, roughly 85,000-year-old rhyolitic Los Chocoyos tephra associated with formation of the Atitlán III caldera. The andesitic Volcán Atitlán is younger than Tolimán 3 km away on the N flank, although their earlier activity overlapped. In contrast to Tolimán, Atitlán displays a thick pyroclastic cover. The northern side of the volcano is wooded to near the summit, whereas the upper 1,000 m of the southern slopes are unvegetated. Predominantly explosive eruptions have been recorded since the 15th century.

References

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

Carr M J, 1984. Symmetrical and segmented variation of physical and geochemical characterisitics of the Central American volcanic front. J. Volcanol. Geotherm. Res., 20: 231-252. https://doi.org/10.1016/0377-0273(84)90041-6

Haapala J M, Escobar Wolf R, Vallance J W, Rose W I, Griswold J P, Schilling S P, Ewert J W, Mota M, 2006. Volcanic hazards at Atitlan volcano, Guatemala. U S Geol Surv Open-File Rpt, 2005-1403.

Halsor S, Rose W I, 1991. Mineralogical relations and magma mixing in calc-alkaline andesites from Lake Atitlan, Guatemala. Mineral Petr, 45: 47-67.

IAVCEI, 1973-80. Post-Miocene Volcanoes of the World. IAVCEI Data Sheets, Rome: Internatl Assoc Volc Chemistry Earth's Interior.

Kutterolf S, Freundt A, Perez W, 2008. Pacific offshore record of plinian arc volcanism in Central America: 2. Tephra volumes and eruptive masses. Geochemistry Geophysics Geosystems, 8: Q02S02. https://doi.org/10.1029/2007GC001791

Mooser F, Meyer-Abich H, McBirney A R, 1958. Central America. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 6: 1-146.

Newhall C G, 1987. Geology of the Lake Atitlan region, western Guatemala. J. Volcanol. Geotherm. Res., 33: 23-55.

Penfield G T, Rose W I, Halsor S, 1986. Geology of the Lake Atitlan volcanoes. Geol Soc Amer Map and Chart Ser, 55 1:49,212 scale map.

Rose W I, Conway F M, Pullinger C R, Deino A, MacIntosh W C, Svitil K A, 1999. An improved age framework for late Quaternary silicic eruptions in northern Central America. Bull Volcanol, 61: 106-120.

Rose W I, Penfield G T, Drexler J W, Larson P B, 1980. Geochemistry of the andesite flank lavas of three composite cones within the Atitlan Cauldron, Guatemala. Bull Volcanol, 43: 131-154.

Sapper K, 1925. The Volcanoes of Central America. Halle: Verlag Max Niemeyer, 144 p.

Siebert L, Alvarado G E, Vallance J W, van Wyk de Vries B, 2006. Large-volume volcanic edifice failures in Central America and associated hazards. In: Rose W I, Bluth G J S, Carr M J, Ewert J W, Patino L C, Vallance J W (eds), Volcanic hazards in Central America, Geol Soc Amer Spec Pap, 412: 1-26.

Woodruff L G, Rose W I Jr, Rigot W, 1979. Contrasting fractionation patterns for sequential magmas from two calc-alkaline volcanoes in Central America. J. Volcanol. Geotherm. Res., 6: 217-240.

Eruptive History

There is data available for 13 confirmed Holocene eruptive periods.

[ 1856 ] Uncertain Eruption

Episode 1 | Eruption

1856 - Unknown

Evidence from Unknown

List of 2 Events for Episode 1

	Start Date	End Date	Event Type	Event Remarks
	- - - -	- - - -	Explosion	Uncertain
	1856	- - - -	VEI (Explosivity Index)

1853 May 3 Confirmed Eruption VEI: 3

Episode 1 | Eruption

1853 May 3 - Unknown

Evidence from Observations: Reported

List of 6 Events for Episode 1

Start Date	End Date	Event Type	Event Remarks
- - - -	- - - -	Explosion
- - - -	- - - -	Pyroclastic flow	Uncertain
- - - -	- - - -	Tephra
- - - -	- - - -	Lahar or Mudflow
- - - -	- - - -	Property Damage
1853 May 3	- - - -	VEI (Explosivity Index)

[ 1852 ] Uncertain Eruption

Episode 1 | Eruption

1852 - Unknown

Evidence from Unknown

List of 2 Events for Episode 1

	Start Date	End Date	Event Type	Event Remarks
	- - - -	- - - -	Explosion	Uncertain
	1852	- - - -	VEI (Explosivity Index)

1843 Jul Confirmed Eruption VEI: 2

Episode 1 | Eruption

1843 Jul - Unknown

Evidence from Observations: Reported

List of 4 Events for Episode 1

Start Date	End Date	Event Type	Event Remarks
- - - -	- - - -	Explosion
- - - -	- - - -	Lava flow	weak or small
- - - -	- - - -	Ash
1843 Jul	- - - -	VEI (Explosivity Index)

1837 Jun Confirmed Eruption VEI: 2

Episode 1 | Eruption

1837 Jun - Unknown

Evidence from Observations: Reported

List of 2 Events for Episode 1

	Start Date	End Date	Event Type	Event Remarks
	- - - -	- - - -	Explosion
	1837 Jun	- - - -	VEI (Explosivity Index)

1833 Confirmed Eruption VEI: 2

Episode 1 | Eruption

1833 - Unknown

Evidence from Observations: Reported

List of 6 Events for Episode 1

Start Date	End Date	Event Type	Event Remarks
- - - -	- - - -	Explosion
- - - -	- - - -	Pyroclastic flow	Uncertain
- - - -	- - - -	Ash
- - - -	- - - -	Earthquakes (undefined)
- - - -	- - - -	Property Damage
1833	- - - -	VEI (Explosivity Index)

1827 Sep 1 - 1828 Jan (?) Confirmed Eruption VEI: 3

Episode 1 | Eruption

1827 Sep 1 - 1828 Jan (?)

Evidence from Observations: Reported

List of 8 Events for Episode 1

Start Date	End Date	Event Type	Event Remarks
- - - -	- - - -	Seismicity (volcanic)
- - - -	- - - -	Explosion
- - - -	- - - -	Pyroclastic flow	Uncertain
- - - -	- - - -	Lava flow
- - - -	- - - -	Ash
- - - -	- - - -	Scoria
- - - -	- - - -	Property Damage
1827 Sep 1	- - - -	VEI (Explosivity Index)

1827 Mar 27 Confirmed Eruption VEI: 2

Episode 1 | Eruption

1827 Mar 27 - Unknown

Evidence from Observations: Reported

List of 2 Events for Episode 1

	Start Date	End Date	Event Type	Event Remarks
	- - - -	- - - -	Explosion
	1827 Mar 27	- - - -	VEI (Explosivity Index)

1826 Nov Confirmed Eruption VEI: 2

Episode 1 | Eruption

1826 Nov - Unknown

Evidence from Observations: Reported

List of 2 Events for Episode 1

	Start Date	End Date	Event Type	Event Remarks
	- - - -	- - - -	Explosion
	1826 Nov	- - - -	VEI (Explosivity Index)

1717 Aug 29 - 1721 Confirmed Eruption

Episode 1 \| Eruption				Volcano Uncertain
1717 Aug 29 - 1721				Evidence from Unknown

1663 Confirmed Eruption VEI: 2

Episode 1 | Eruption

1663 - Unknown

Evidence from Observations: Reported

List of 4 Events for Episode 1

Start Date	End Date	Event Type
- - - -	- - - -	Explosion
- - - -	- - - -	Ash
- - - -	- - - -	Lahar or Mudflow
1663	- - - -	VEI (Explosivity Index)

1579 (?) - 1581 Dec 31 ± 30 days Confirmed Eruption VEI: 2

Episode 1 | Eruption

1579 (?) - 1581 Dec 31 ± 30 days

Evidence from Observations: Reported

List of 3 Events for Episode 1

Start Date	End Date	Event Type
- - - -	- - - -	Explosion
- - - -	- - - -	Flames
1579 (?)	- - - -	VEI (Explosivity Index)

1505 (?) Confirmed Eruption VEI: 3 (?)

Episode 1 | Eruption

1505 (?) - Unknown

Evidence from Observations: Reported

List of 5 Events for Episode 1

Start Date	End Date	Event Type
- - - -	- - - -	Explosion
- - - -	- - - -	Tephra
- - - -	- - - -	Ash
- - - -	- - - -	Lahar or Mudflow
1505 (?)	- - - -	VEI (Explosivity Index)

1469 Confirmed Eruption VEI: 3

Episode 1 | Eruption

1469 - Unknown

Evidence from Observations: Reported

List of 3 Events for Episode 1

Start Date	End Date	Event Type
- - - -	- - - -	Explosion
- - - -	- - - -	Tephra
1469	- - - -	VEI (Explosivity Index)

1020 BCE ± 150 years Confirmed Eruption

Episode 1 | Eruption

1020 BCE ± 150 years - Unknown

Evidence from Isotopic: 14C (uncalibrated)

List of 4 Events for Episode 1

Start Date	End Date	Event Type
- - - -	- - - -	Explosion
- - - -	- - - -	Pyroclastic flow
- - - -	- - - -	Lava flow
- - - -	- - - -	Tephra

Deformation History

There is no Deformation History data available for Atitlán.

Emission History

There is no Emissions History data available for Atitlán.

Photo Gallery

Volcán Atitlán rises above the Pacific coastal plain of Guatemala. Tolimán is the lower peak to the right of the summit. The volcanic highlands of Guatemala are seen here from the SE with Volcán Santo Tomás on the far left, 35 km to the NW of Atitlán.

Photo by Lee Siebert, 1988 (Smithsonian Institution).

The resort town of Panajachel occupies a delta of the river of the same name that flows into Lake Atitlán, within the Atitlan caldera. The northern caldera wall rises about 1 km above the lake surface. The level of the lake has fluctuated more than 10 m over periods of several decades, and titles exist to land now submerged hundreds of meters from the current shoreline. High heat flow is present in the lake.

Photo by Lee Siebert, 1988 (Smithsonian Institution).

Atitlán and Tolimán volcanoes rise above Lake Atitlán in this view from the town of Sololá north of the lake. Atitlán is the taller of the two and forms the skyline immediately behind and to the left of Tolimán. The Cerro de flank lava dome immediately above the lakeshore to the lower left of the summit erupted within the past few thousand years. The two volcanoes were constructed over the buried rims of two Miocene-Pleistocene Atitlán calderas.

Photo by Lee Siebert, 1988 (Smithsonian Institution).

The twin volcanoes of Tolimán and Atitlán rise above the southern shores of Lake Atitlán in this view from the NNW. The surface of Tolimán (left) is draped by prominent thick lava flows. Many of the flows were erupted from vents on the volcano's flanks and form an irregular shoreline on the south side of Lake Atitlán. A lava flow from the parasitic lava dome of Cerro de Oro on the north flank entered Lake Atitlán and is less than a few thousand years old. No historical eruptions are known from Tolimán.

Copyrighted photo by Katia and Maurice Krafft, 1983.

Atitlán (left) and Tolimán (right) are twin stratovolcanoes on the shores of Lake Atitlán, one of the scenic highlights of Guatemala. The historically active Atitlán is younger than Tolimán, although their activity overlaps. The surface of Tolimán is draped by prominent thick lava flows, in contrast to the extensive pyroclastic cover on Atitlán. Tolimán lava flows, erupted from both summit and flank vents, have produced a pronounced embayment with an irregular shoreline that extends into the lake. This view is from the NE on the rim of Atitlán caldera.

Copyrighted photo by Katia and Maurice Krafft, 1974.

Atitlán (foreground) and Tolimán are twin volcanoes located immediately south of Lake Atitlán (background). Tolimán was constructed on the buried rim of the Atitlán II caldera, whereas Volcán Atitlán was built 4 km south over the rim of the Atitlán III caldera. Atitlán, whose summit area remains unvegetated, has been active in historical time. Tolimán has not had historical eruptions, but has erupted within the past 1000 years.

Copyrighted photo by Katia and Maurice Krafft, 1983.

The twin volcanoes of Tolimán (left) and Atitlán (right) on the center skyline, along with San Pedro volcano in the foreground, rise above the southern shores of Lake Atitlán. This aerial view looking along the chain of stratovolcanoes stretching across Guatemala, also shows Fuego volcano at the upper left. The double-peaked Tolimán is somewhat older than the conical Atitlán volcano to its south.

Copyrighted photo by Katia and Maurice Krafft, 1983.

This dramatic photo looking SE down the axis of a chain of volcanoes extending across Guatemala shows six Quaternary volcanoes and one large caldera. Beginning in the right foreground are three volcanoes, San Pedro, the conical Atitlán, and Tolimán, that are constructed on the southern shore of Lake Atitlán, which fills a large Pleistocene caldera. The three volcanoes in the distance are, from left to right, Agua, Acatenango, and Fuego. Tolimán-Atitlán and Acatenango-Fuego are paired volcanoes along N-S lines.

Copyrighted photo by Katia and Maurice Krafft, 1983.

Volcán Atitlán, seen here from the SE with San Pedro volcano behind it and Tolimán volcano to its left, is a conical stratovolcano that rises to 3535 m south of Lake Atitlán (right). The historically active Atitlán is younger than Tolimán, although their activity overlaps. The northern side of the volcano is wooded to near the summit, whereas the upper 1000 m of the southern slopes, seen here, are unvegetated. Predominatley explosive eruptions have been recorded from Volcán Atitlán since the 15th century.

Copyrighted photo by Katia and Maurice Krafft, 1983.

Volcán Fuego, one of Central America's most active volcanoes, is one of three large stratovolcanoes overlooking Guatemala's former capital, Antigua. The scarp of an older edifice, Meseta, forms the shoulder between between Fuego and its twin volcano, Acatenango. This view from the SE also shows Atitlán volcano above the saddle between Fuego and Acantenango. Vigorous historical eruptions have been recorded at Fuego since 1524. They have produced major ashfalls, along with occasional pyroclastic flows and lava flows.

Copyrighted photo by Katia and Maurice Krafft, 1983.

Thick units of the 84,000-year-old Los Chocoyos Ash are exposed south of Guatemala City, more than 100 km from its source at Atitlán caldera. Three units are visible here. The pinkish unit across the center of is the oxidized top of the pyroclastic flow deposit. The bottom two white units are the top and bottom halves of the deposit. The two fall deposits above the Los Chocoyos Ash are unit E from Amatitlán caldera and the younger unit C from Volcán de Agua.

Photo by Bill Rose, 1978 (Michigan Technological University).

A panoramic view to the west across Lake Atitlán shows the flanks of Tolimán volcano extending to the lakeshore on the left, San Pedro volcano at the SW end of the lake, and the two peaks of Santo Tomás (left) and Santa María (right) on the center horizon. Tajumulco volcano appears in the distance at the upper right. Lake Atitlán occupies the northern half of the youngest Atitlán caldera, which formed during the eruption of the Los Chocoyos Ash about 84,000 years ago.

Photo by Bill Rose, 1972 (Michigan Technological University).

Three stratovolcanoes fill the southern half of Atitlán caldera in this view from the NE. Atitlán caldera formed during three major explosive eruptions from the Miocene to late Pleistocene. Atitlán volcano (far left) was constructed above the southern rim of the youngest caldera, Atitlán III, whose low southern rim is visible on the center horizon beyond narrow Santiago bay. Tolimán (right of Atitlán) and San Pedro (far right) overlie the rim of Atitlán II. The buried rim of Atitlán I lies below the shoreline of Tolimán.

Photo by Bill Rose, 1980 (Michigan Technological University).

The 84,000-year-old Los Chocoyos Ash from Atitlán caldera is exposed in a quarry near San Juan Ostuncalco, west of Quetzaltenango. The white layer at the base is layer H, a rhyolite unit that is one of the largest known Plinian fall deposits in Central America. Despite its relative thinness, it is preserved over the entire Guatemalan highlands. The thicker overlying unit is the pyroclastic flow deposit, part of the Los Chocoyos ash. This massive unwelded pyroclastic flow deposit is up to 200 m thick.

Photo by Bill Rose, 1974 (Michigan Technological University).

The summit of Atitlán volcano contains shallow craters in this 1980 photo. San Pedro volcano rises across Santiago bay to the right, and in the distance (left-to-right) are the peaks of Santo Tomás, Santa María, and Tajumulco. Atitlán is the highest of the three post-caldera cones of Atitlán caldera.

Photo by Bill Rose, 1980 (Michigan Technological University).

Volcán Tolimán (center) towers above the south shore of scenic Lake Atitlán. Tolimán and the adjacent Atitlán (upper left) were constructed within the Pleistocene Atitlán III caldera, near its inferred southern margin. In contrast to the tephra-covered surface of Volcán Atitlán, the surface of Tolimán is dominated by thick lava flows. The recent eruptions of Tolimán were primarily effusive eruptions from flank vents. The resulting lava flows extend into the lake and produce the irregular shoreline.

Photo by Bill Rose, 1972 (Michigan Technological University).

Volcán Atitlán directly overlies the inferred margin of the Pleistocene Atitlán III caldera, whose northern rim lies across Lake Atitlán. The Atitlán stratovolcano is adjacent to Tolimán to its north (seen just to the right of Atitlán's summit). The historically active Atitlán is younger than Tolimán, although their earlier activity overlapped. Atitlán’s surface is composed of tephra, reflecting its predominantly explosive eruptions that have been recorded since the 15th century.

Photo by Bill Rose, 1980 (Michigan Technological University).

Lake Atitlán fills the northern half of the Atitlán III caldera, which formed about 84,000 years ago following eruption of the Los Chocoyos Ash. The 18-km-long caldera lake is seen here from the south, with the flanks of the post-caldera Tolimán volcano in the foreground. The relatively flat lake floor is 300 m below the water surface, and caldera walls rise to about 1 km above the lake.

Photo by Bill Rose, 1980 (Michigan Technological University).

A geologist examines an outcrop of the 84,000-year-old Los Chocoyos Ash near Patzún, about 10 km E of Lake Atitlán. Note the charred log above his head. This pyroclastic flow unit of the Los Chocoyos deposit is up to 200 m thick and is exposed over an area of about 2,000 km². Individual flow units of the voluminous ignimbrite are sometimes more than 100 m thick. The upper part of the deposit is characteristically salmon-pink in color as a result of oxidation of the cooling flow.

Photo by Bill Rose, 1980 (Michigan Technological University).

Lobate lava flows from Tolimán volcano form the irregular shore jutting into Lake Atitlán. The Cerro de Oro cone is on the near shore to the upper right, and the NE wall of Atitlán caldera rises about 1 km above the far side of the lake. The town of Santiago Atitlán (foreground) lies near the mouth of Santiago Bay. The buried margin of Atitlán I caldera, the first of three Miocene-Pleistocene calderas at Atitlán, lies approximately below Cerro de Oro; the boundary of Atitlán II caldera lies just below the bottom of the photo.

Photo by Bill Rose, 1980 (Michigan Technological University).

Lake Atitlán fills the northern part of the Atitlán caldera complex. The caldera formed in three stages: Atitlán I caldera about 11 million years ago (Ma), Atitlán II caldera about 8 Ma, and Atitlán III caldera about 84,000 years ago. The southern margin of the first caldera lies near the southern shore of the 18-km-wide lake, San Pedro and Tolimán volcanoes were constructed over the southern margin of the second caldera, and Atitlán over the third.

NASA Landsat image, 2000 (courtesy of Loren Siebert, University of Akron).

This 2018 view of Volcán Tolimán (left) and Volcán Atitlán (right) is from the shores of Lake Atitlan opposite the town of Santiago Atitlan (just out of view to the left). The cones formed along the southern rim of the Atitlán III caldera with the lake in the foreground filling the northern area.

Photo by Ailsa Naismith, 2018.

GVP Map Holdings

Maps are not currently available due to technical issues.

Smithsonian Sample Collections Database

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

External Sites

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.

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.

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.

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 Atitlán. 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 Atitlán. 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 Atitlán

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).