Data from the Global Volcanism Program of the Smithsonian Institution
Details for: Augustine
Augustine volcano, in Kamishak Bay in the southern Cook Inlet, is the most active volcano of the eastern Aleutian arc. It consists of a complex of overlapping summit lava domes surrounded by an apron of volcaniclastic debris that descends to the sea on all sides. This view from the NW shows the steaming summit of Augustine in 1986 reflected in a shallow lagoon separating the main island of Augustine from West Island. Twentieth-century eruptions have included explosive activity with pyroclastic flows and lava dome extrusion. Photo by Lee Siebert, 1986 (Smithsonian Institution).
Volcano Number:313010
Volcano Name:Augustine
Country:United States
Volcano Type:Lava dome(s)
Last Eruption:2006
Elevation:1252m
Tectonic Setting:Subduction zone / Continental crust (> 25 km)
Pop. within 5km:0
Pop. within 10km:0
Pop. within 30km:0
Pop. within 100km:759
Latitude:59.363
Longitude:-153.43



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
313010 Augustine 20251 Confirmed Eruption Radiocarbon (corrected) -5420
313010 Augustine 20252 Confirmed Eruption Radiocarbon (corrected) -4150
313010 Augustine 20253 Confirmed Eruption Radiocarbon (corrected) -2040
313010 Augustine 20254 Confirmed Eruption Radiocarbon (corrected) -1820
313010 Augustine 20255 Confirmed Eruption Tephrochronology -350
313010 Augustine 20256 Confirmed Eruption Radiocarbon (corrected) -310
313010 Augustine 20257 Confirmed Eruption Tephra layer G Radiocarbon (corrected) -120
313010 Augustine 20258 Confirmed Eruption Tephra layer I Radiocarbon (corrected) 340
313010 Augustine 20259 Confirmed Eruption Tephra layer H Radiocarbon (corrected) 570
313010 Augustine 20260 Confirmed Eruption Tephra layer C Radiocarbon (corrected) 930
313010 Augustine 20261 Confirmed Eruption Tephra layer M Radiocarbon (corrected) 1230
313010 Augustine 20262 Confirmed Eruption 4 ? Historical Observations 1986/3/27 1986/8/31
313010 Augustine 20263 Confirmed Eruption 4 ? Tephra layer B Radiocarbon (corrected) 1540
313010 Augustine 20264 Confirmed Eruption Tephrochronology 1650
313010 Augustine 20265 Confirmed Eruption 3 ? Historical Observations 1812
313010 Augustine 20266 Confirmed Eruption 4 Historical Observations 1883/10/6 1884
313010 Augustine 20268 Confirmed Eruption 1 ? Historical Observations 1908
313010 Augustine 20269 Confirmed Eruption 3 Historical Observations 1935/3/13 1935/8/18
313010 Augustine 20270 Confirmed Eruption 2 Historical Observations 1963/10/11 1964/8/19
313010 Augustine 20271 Confirmed Eruption 1 Historical Observations 1971/10/7 1971/10/8
313010 Augustine 20272 Confirmed Eruption 4 Historical Observations 1976/1/22 1977/5/14
313010 Augustine 20273 Confirmed Eruption 3 Historical Observations 2005/12/9 2006/4/27
Emissions Data from the Global Volcanism Program of the Smithsonian Institution
Emission ID SO2 Kilotons Start Date End Date
225 20 1986/03/27 1986/03/27
226 10 2006/01/29 2006/01/29


Data from the Earthchem Portal


Data from the SESAR Database


Data from the MaGa Database
Location: Augustine (View Details at MaGa DB)
Description: Augustine volcano, rising above Kamishak Bay in the southern Cook Inlet about 290 km SW of Anchorage, is the most active volcano of the eastern Aleutian arc. It consists of a complex of overlapping summit lava domes surrounded by an apron of volcaniclastic debris that descends to the sea on all sides. Despite its relative calm, Augustine was selected as one of Alaska's potentially most hazardous volcanoes,
Hazard Description: not reported
Type: volcanic_plume
Region: Alaska, USA
Country: United States
Volcanic Complex: Augustine
Gas Flux Data:
Measurement Name Detail Specie Flux Std. Dev. Unit of Measure
Augustine_16012006 Detail SO2 2780 0 Mg/d
Augustine_19012006 Detail SO2 3020 0 Mg/d
Augustine_19012006 Detail H2S 8.2 0 Mg/d
Augustine_24012006 Detail SO2 914 0 Mg/d
Augustine_24012006 Detail H2S 4.9 0 Mg/d
Augustine_09032006 Detail SO2 1020 0 Mg/d
Augustine_10032006 Detail SO2 3110 0 Mg/d
Augustine_27042006 Detail SO2 751 0 Mg/d
Augustine_27042006 Detail H2S 1.3 0 Mg/d
Augustine_24092006 Detail SO2 283 0 Mg/d
Augustine_24092006 Detail H2S 1.3 0 Mg/d
Augustine_18112006 Detail SO2 211 0 Mg/d
Augustine_03041986 Detail CO2 6900 0 Mg/d
Augustine_03041986 Detail SO2 24000 0 Mg/d
Augustine_24071986 Detail CO2 110 0 Mg/d
Augustine_24071986 Detail SO2 380 0 Mg/d
Augustine_24081987 Detail CO2 7.8 0 Mg/d
Augustine_24081987 Detail SO2 27 0 Mg/d
Augustine_17112006 Detail SO2 220 0 Mg/d
Augustine_24051987 Detail CO2 13 0 Mg/d
Augustine_24051987 Detail SO2 45 0 Mg/d
Augustine_24051987 Detail H2O 190 0 Mg/d
Augustine_24081987 Detail H2O 110 0 Mg/d
Augustine_24071986 Detail H2O 1600 0 Mg/d
Augustine_03041986 Detail H2O 990000 0 Mg/d
Augustine_24051987 Detail CO2 13 0 Mg/d
Augustine_24051987 Detail SO2 45 0 Mg/d
Augustine_18112006 Detail CO2 400 0 Mg/d
Augustine_17112006 Detail CO2 300 0 Mg/d
Augustine_16012006 Detail CO2 4980 0 Mg/d
Augustine_10032006 Detail CO2 9100 0 Mg/d
Augustine_24092006 Detail CO2 289 0 Mg/d
Augustine_27042006 Detail CO2 626 0 Mg/d