Data from the Global Volcanism Program of the Smithsonian Institution
Details for: Irazu
A lake occupies one of the summit craters of Irazú, one of Costa Rica's most active volcanoes. Irazú rises to 3432 m immediately east of the capital city of San José and is the country's highest volcano. This crater lake (seen here from the southern crater rim) has been the source of many historical eruptions. The first well documented historical eruption of Irazú occurred in 1723, and frequent explosive eruptions have occurred since. Ashfall from its last major eruption during 1963-65 caused significant disruption to San José and surrounding areas. Photo by José Enrique Valverde Sanabria, 1996 (courtesy of Eduardo Malavassi, OVSICORI-UNA).
Volcano Number:345060
Volcano Name:Irazu
Country:Costa Rica
Volcano Type:Stratovolcano
Last Eruption:1994
Elevation:3432m
Tectonic Setting:Subduction zone / Continental crust (> 25 km)
Pop. within 5km:1978
Pop. within 10km:25442
Pop. within 30km:1667528
Pop. within 100km:3432860
Latitude:9.979
Longitude:-83.852



Eruption Data from the Global Volcanism Program of the Smithsonian Institution
Volcano Number Volcano Name Eruption Number Activity Type Explosivity Index Max Explosivity Index Modifier Activity Area Activity Unit Start Evidence Method Start Date End Date
345060 Irazu 11079 Confirmed Eruption 2 ? Historical Observations 1885
345060 Irazu 11196 Confirmed Eruption 3 Radiocarbon (corrected) -640
345060 Irazu 11197 Confirmed Eruption 3 Radiocarbon (corrected) 430
345060 Irazu 11198 Confirmed Eruption 3 Radiocarbon (corrected) 690
345060 Irazu 11199 Confirmed Eruption 3 Radiocarbon (corrected) 1110
345060 Irazu 11200 Confirmed Eruption 3 Radiocarbon (corrected) 1560
345060 Irazu 11201 Confirmed Eruption 3 Diego de la Haya Crater Historical Observations 1723/2/16 1724
345060 Irazu 11202 Confirmed Eruption 2 Diego de la Haya Crater Historical Observations 1726
345060 Irazu 11203 Confirmed Eruption 2 ? Historical Observations 1775
345060 Irazu 11204 Uncertain Eruption 2 1821
345060 Irazu 11205 Confirmed Eruption 2 Historical Observations 1822/5/7
345060 Irazu 11206 Confirmed Eruption 2 ? Historical Observations 1823
345060 Irazu 11207 Uncertain Eruption 1826
345060 Irazu 11208 Confirmed Eruption 2 Historical Observations 1842
345060 Irazu 11209 Uncertain Eruption 2 1844
345060 Irazu 11210 Confirmed Eruption 2 Historical Observations 1847/5/18
345060 Irazu 11211 Confirmed Eruption 2 Historical Observations 1864/9/16 1864/9/17
345060 Irazu 11212 Confirmed Eruption 2 Historical Observations 1875
345060 Irazu 11213 Uncertain Eruption 2 1882
345060 Irazu 11218 Uncertain Eruption 2 1909
345060 Irazu 11220 Uncertain Eruption 1914/2/21
345060 Irazu 11221 Confirmed Eruption 3 Historical Observations 1917/9/27 1921
345060 Irazu 11222 Confirmed Eruption 2 Historical Observations 1924 1924
345060 Irazu 11223 Confirmed Eruption 2 Historical Observations 1928/2/14 1928/5/26
345060 Irazu 11224 Confirmed Eruption 2 Historical Observations 1930
345060 Irazu 11225 Confirmed Eruption 2 Historical Observations 1933/3/22 1933/7/25
345060 Irazu 11226 Confirmed Eruption 2 Historical Observations 1939/5/18 1940
345060 Irazu 11228 Confirmed Eruption 3 Historical Observations 1963/3/13 1965/2/13
345060 Irazu 11231 Confirmed Eruption 1 Historical Observations 1977/3/3
345060 Irazu 11232 Confirmed Eruption 2 Upper NW flank Historical Observations 1994/12/8 1994/12/8
345060 Irazu 14072 Confirmed Eruption 2 ? Historical Observations 1886
Emissions Data from the Global Volcanism Program of the Smithsonian Institution No emissions data found for this volcano.


Data from the Earthchem Portal
Sorry. No data exist for this volcano in the EarthChem Portal.


Data from the SESAR Database


Data from the MaGa Database
Location: Irazù (View Details at MaGa DB)
Description: The Irazú Volcano (Spanish: Volcán Irazú) is an active volcano in Costa Rica, situated in the Cordillera Central close to the city of Cartago. The volcano's summit has several craters, one of which contains Diego de la Haya, a green crater lake of variable depth. At 11,260 feet (3,432 m), the Irazú Volcano is the highest active volcano in Costa Rica.
Hazard Description: not reported
Type: soil_diffuse_emission
Region: Cartago, Costa Rica
Country: Costa Rica
Volcanic Complex: Irazu
Gas Flux Data:
Measurement Name Detail Specie Flux Std. Dev. Unit of Measure
Irazù_14022001 Detail CO2 44 0 Mg/d