Okmok Caldera
E529420
Okmok Caldera is a large, historically active volcanic caldera in Alaska’s Aleutian Islands known for its explosive eruptions and extensive lava fields.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Okmok Caldera canonical | 2 |
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
stratovolcano complex
ⓘ
volcanic caldera ⓘ |
| affects | aviation in North Pacific ⓘ |
| country |
United States of America
ⓘ
surface form:
United States
|
| eruptionStyle |
effusive
ⓘ
explosive ⓘ |
| eruptionYear |
1817
ⓘ
1919 ⓘ 1938 ⓘ 1945 ⓘ 1958 ⓘ 1997 ⓘ |
| formedBy | large explosive eruptions ⓘ |
| hasCalderaDiameter |
approximately 10 kilometers
ⓘ
approximately 6 miles ⓘ |
| hasFeature |
caldera lake (intermittent or ephemeral)
ⓘ
central cone complex ⓘ extensive lava fields ⓘ multiple cinder cones ⓘ tuff cones ⓘ |
| hasMonitoring |
infrasound sensors
ⓘ
satellite remote sensing ⓘ seismic network ⓘ web cameras ⓘ |
| hasRockType |
andesite
ⓘ
basalt ⓘ basaltic-andesitic lava ⓘ |
| hazardType |
ashfall
ⓘ
lahars ⓘ lava flows ⓘ pyroclastic flows ⓘ volcanic gas emissions ⓘ |
| isActive | true ⓘ |
| lastMajorEruption | 2008 ⓘ |
| locatedIn |
Alaska
ⓘ
Aleutian Islands NERFINISHED ⓘ Umnak Island NERFINISHED ⓘ United States of America ⓘ
surface form:
United States
|
| monitoredBy |
Alaska Volcano Observatory
NERFINISHED
ⓘ
United States Geological Survey NERFINISHED ⓘ |
| partOf |
Alaska Peninsula and Aleutian volcanic arc
NERFINISHED
ⓘ
Aleutian Arc NERFINISHED ⓘ |
| state | Alaska ⓘ |
| subductingPlate | Pacific Plate NERFINISHED ⓘ |
| tectonicPlate | North American Plate NERFINISHED ⓘ |
| tectonicSetting | subduction zone ⓘ |
| volcanicArc | Aleutian volcanic arc NERFINISHED ⓘ |
| volcanoType | shield-like caldera complex ⓘ |
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.