Suoh
Caldera(s) in Indonesia
Key Facts
Elevation
1,000 m (3,281 ft)
Type
Caldera(s)
Location
-5.250°, 104.270°
Region
Sunda Volcanic Arc
Total Eruptions
2
Max VEI
VEI 4
Rock Type
No Data (checked)
Tectonic Setting
Subduction zone
Location
Loading map...
Eruption Timeline
Most recent confirmed eruption
Historical eruption (estimated)
Overview
The 8 x 16 km Suoh (or Suwoh) depression appears to have a dominantly tectonic origin, but contains a smaller complex of overlapping calderas oriented NNE-SSW. Historically active maars and silicic domes lie along the margins of the depression, which falls along the Great Sumatran Fault that extends the length of the island. Numerous hot springs occur along faults within the depression, which contains the Pematang Bata fumarole field.
Large phreatic explosions (0. 2 km2 tephra) occurred at the time of a major tectonic earthquake in 1933. Very minor hydrothermal explosions produced two 5-m-wide craters at the time of a February 1994 earthquake.
Volcanic Hazards & Risk Assessment
Primary Hazards
Risk Level
Geological Composition & Structure
Rock Types
Tectonic Setting
Age & Formation
Eruption Statistics & Analysis
| Metric | Value | Global Ranking | Significance |
|---|---|---|---|
| Total Recorded Eruptions | 2 | Low | Moderately active volcano |
| Maximum VEI | VEI 4 | Major | Regional impact potential |
| Recent Activity | 2 years ago | Very Recent | Currently active |
Monitoring & Alert Status
Monitoring Networks
Current Status
Nearby Volcanoes in Sunda-Banda Volcanic Regions
Quick Info
- •Smithsonian ID: 261270
- •Evidence: Eruption Observed
- •Epoch: Holocene
About the Photo
Steam plumes rise above the Danau Asam fumaroles on the west side of lake Asam within the 8 x 16 km Suoh depression in SE Sumatra. The depression appears to be primarily of tectonic origin, but contains historically active maars and silicic domes along its margins. Hot springs occur along faults and the Pematang Bata fumarole field are within the depression. Prior to a large explosive eruption in 1933 the floor of the Suoh depression was a broad marsh 13 km long in a NNW-SSE direction.
Anonymous, 1990.
Authority Sources
Related Volcanoes
Basic Information
This page shows basic data from the Smithsonian Global Volcanism Program. For more detailed information, visit the official Smithsonian page.