About Protector Seamounts
Protector Seamounts is a volcanic field rising to -55 meters (-180 feet) in United Kingdom's Antarctic-Scotia Volcanic Regions. It last erupted in 1962 CE, and volcanologists consider it an active volcanic system. The volcano has produced 1 recorded eruption, with a maximum Volcanic Explosivity Index (VEI) of 1.
Geography & Climate
Protector Seamounts is located in United Kingdom, within the South Sandwich Volcanic Arc of the broader Antarctic-Scotia Volcanic Regions. Situated at 55.91° S, 28.17° W in the Southern Hemisphere, the volcano lies within a subarctic climate zone. With an elevation of -55 meters — below sea level — Protector Seamounts is a submarine or submerged volcanic feature. Submarine volcanoes make up the majority of Earth's volcanic activity, though most eruptions go unobserved beneath the ocean surface. The volcanic landform is characterized as a cluster, which describes the physical shape and structure of the volcanic edifice as observed from the surface.
Geological Context
Protector Seamounts sits in a subduction zone, where one tectonic plate dives beneath another, creating intense heat and pressure that generates magma. Subduction zones are responsible for many of the world's most explosive volcanoes and deadliest eruptions. For communities in United Kingdom near Protector Seamounts, this tectonic setting means the volcano is capable of producing powerful explosive eruptions, pyroclastic flows, and lahars that can threaten populated areas within tens of kilometers of the summit. The dominant rock type is rhyolite, a silica-rich volcanic rock associated with highly viscous magma. Rhyolitic eruptions can be extremely explosive and are responsible for some of the largest volcanic events in Earth's history, including supervolcanic caldera-forming eruptions. The high silica content traps dissolved gases, building enormous pressure that can lead to catastrophic explosive releases.
Eruption History Summary
Protector Seamounts has 1 recorded eruption in the geological database, spanning from 1962 CE to 1962 CE. The most powerful recorded event was a gentle, effusive event in 1962 CE, reaching VEI 1 on the Volcanic Explosivity Index. The most recent eruption in 1962 CE places this volcano within the modern era of volcanological observation.
GVP Reference Summary
The Protector Seamounts, located 30 km NW of Zavodovski Island, form the northernmost volcanic region of the South Sandwich volcanic arc. Bathymetry described by Leat et al. (2013) showed that Nimrod Bank forms the central point in the seamount chain. Protector Shoal, on the S end of the bank, is a broad, gently sloping cone that rises to within 55 m of the ocean surface. Large amounts of rhyolitic pumice, first detected by the Royal Navy Ice Patrol Vessel H.M.S. Protector, were ejected during its only recorded eruption in 1962 and formed an extensive pumice raft which drifted as far as New Zealand.
— Smithsonian Institution, Global Volcanism Program
1 Recorded Eruption
| Year | VEI | Type | Area |
|---|---|---|---|
| 1962 | 1 | Confirmed Eruption | — |
Real-Time Data
USGS Alert Level
Thermal Anomalies
Frequently Asked Questions About Protector Seamounts
Is Protector Seamounts an active volcano?+
Yes, Protector Seamounts is considered an active volcano. Its most recent eruption was in 1962 CE. The volcano is monitored by geological agencies, and its activity status is based on observed eruptions within recorded history.
When did Protector Seamounts last erupt?+
The most recent recorded eruption of Protector Seamounts occurred in 1962 CE with a Volcanic Explosivity Index (VEI) of 1. The eruption was classified as a "Confirmed Eruption." Protector Seamounts has 1 recorded eruption in total.
How high is Protector Seamounts?+
Protector Seamounts has a summit elevation of -55 meters (-180 feet) above sea level. With an elevation of -55 meters (below sea level), this is a submarine or submerged volcanic feature.
What type of volcano is Protector Seamounts?+
Protector Seamounts is classified as a Volcanic field. Volcanic fields consist of clusters of small volcanic vents and cinder cones spread across a region. Rather than a single central vent, eruptions can occur at many points across the field.
Where is Protector Seamounts located?+
Protector Seamounts is located in United Kingdom, in the Antarctic-Scotia Volcanic Regions. More specifically, it lies within the South Sandwich Volcanic Arc. Its exact coordinates are -55.912° latitude, -28.167° longitude.
Is it safe to visit Protector Seamounts?+
Visiting Protector Seamounts requires checking current volcanic activity and alert levels. As an active volcano with eruptions as recent as 1962 CE, conditions can change rapidly. Always consult local geological authorities and follow official warnings before visiting. Many active volcanoes have designated safe viewing areas and guided tour options.