The launch of a new GVP website is scheduled for Monday, May 20, 2013.
| Start Date: 2008 Jul 12 | Stop Date: 2008 Aug 19 |
|
Dating Technique: Historical Records Volcanic Explosivity Index (VEI): 4? Area of Activity: NE caldera floor |
Eruptive Characteristics:
|
| Start Date: 1997 Feb 11 | Stop Date: 1997 May 19 ± 4 days |
|
Dating Technique: Historical Records Volcanic Explosivity Index (VEI): 3 Lava Volume: 4.8 x 107 m3 Area of Activity: SW part of caldera (Cone A) |
Eruptive Characteristics:
|
| Start Date: 1986 Nov 18 | Stop Date: 1988 Feb 26 |
|
Dating Technique: Historical Records Volcanic Explosivity Index (VEI): 2 Area of Activity: SW part of caldera (Cone A) |
Eruptive Characteristics:
|
| Start Date: 1983 Jul 8 | Stop Date: 1983 Jul 8 |
|
Dating Technique: Historical Records Volcanic Explosivity Index (VEI): 2 Area of Activity: SW part of caldera (Cone A) |
Eruptive Characteristics:
|
| Start Date: 1981 Mar 24 | Stop Date: 1981 Mar 24 |
|
Dating Technique: Historical Records Volcanic Explosivity Index (VEI): 3? Area of Activity: SW part of caldera (Cone A) |
Eruptive Characteristics:
|
| Start Date: 1960 Oct 15 ± 45 days | Stop Date: 1961 Apr 15 ± 45 days |
|
Dating Technique: Historical Records Volcanic Explosivity Index (VEI): 3 Tephra Volume: > 1 x 107 m3 Area of Activity: SW part of caldera (Cone A) |
Eruptive Characteristics:
|
| Start Date: 1958 Aug 14 | Stop Date: 1958 Aug 25 ± 10 days |
|
Dating Technique: Historical Records Volcanic Explosivity Index (VEI): 3 Lava Volume: 1.2 x 108 m3 Area of Activity: SW part of caldera (Cone A) |
Eruptive Characteristics:
|
| Start Date: 1945 Jun 4 | Stop Date: 1945 Dec |
|
Dating Technique: Historical Records Volcanic Explosivity Index (VEI): 2 Lava Volume: 2.1 x 107 m3 Area of Activity: SW part of caldera (Cone A) |
Eruptive Characteristics:
|
| Start Date: 1943 Jun | Stop Date: Unknown |
|
Dating Technique: Historical Records Volcanic Explosivity Index (VEI): 1 Area of Activity: SW part of caldera (Cone A) |
Eruptive Characteristics:
|
| Start Date: 1938 | Stop Date: Unknown |
|
Dating Technique: Historical Records Area of Activity: SW part of caldera (Cone A) |
Eruptive Characteristics:
|
| Start Date: 1936 | |
|
Eruption is UNCERTAIN Area of Activity: SW part of caldera (Cone A) |
Eruptive Characteristics:
|
| Start Date: 1931 Mar 21 | Stop Date: 1931 May 13 (on or after) |
|
Dating Technique: Historical Records Volcanic Explosivity Index (VEI): 2 Area of Activity: Cone A? |
Eruptive Characteristics:
|
| Start Date: 1899 | Stop Date: Unknown |
|
Dating Technique: Historical Records Volcanic Explosivity Index (VEI): 3 Area of Activity: SW part of caldera (Cone A) |
Eruptive Characteristics:
|
| Start Date: 1878 | Stop Date: Unknown |
|
Dating Technique: Historical Records Volcanic Explosivity Index (VEI): 2? Area of Activity: Cone A? |
Eruptive Characteristics:
|
| Start Date: 1824 | Stop Date: 1830 |
|
Dating Technique: Historical Records Area of Activity: Cone B? |
Eruptive Characteristics:
|
| Start Date: 1817 Mar 1 | Stop Date: 1820 |
|
Dating Technique: Historical Records Volcanic Explosivity Index (VEI): 3 Area of Activity: Cone E? or B? |
Eruptive Characteristics:
|
| Start Date: 1805 | Stop Date: Unknown |
|
Dating Technique: Historical Records |
Eruptive Characteristics:
|
| Start Date: 100 BC ± 50 years | Stop Date: Unknown |
|
Dating Technique: Radiocarbon (uncorrected) Volcanic Explosivity Index (VEI): 6 Tephra Volume: 5.0 ± 1.0 x 1010 m3 Area of Activity: (Okmok II caldera) |
Eruptive Characteristics:
|
| Start Date: 6310 BC ± 500 years | Stop Date: Unknown |
|
Dating Technique: Radiocarbon (uncorrected) Volcanic Explosivity Index (VEI): P |
Eruptive Characteristics:
|