About Esmeralda Bank
Esmeralda Bank is a stratovolcano rising to -74 meters (-243 feet) in United States's Northwestern Pacific Volcanic Regions. No historical eruptions have been recorded, though the volcano is classified based on geological evidence of past activity. The volcano has produced 6 recorded eruptions, with a maximum Volcanic Explosivity Index (VEI) of 2.
Geography & Climate
Esmeralda Bank is located in United States, within the Mariana Volcanic Arc of the broader Northwestern Pacific Volcanic Regions. Situated at 14.96° N, 145.25° E in the Northern Hemisphere, the volcano lies within a tropical climate zone. With an elevation of -74 meters — below sea level — Esmeralda Bank 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 composite, which describes the physical shape and structure of the volcanic edifice as observed from the surface.
Geological Context
Esmeralda Bank 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 States near Esmeralda Bank, 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 basalt / picro-basalt, a dark, fine-grained volcanic rock that forms from rapidly cooling, low-viscosity lava. Basaltic eruptions tend to be less explosive and produce fluid lava flows that can travel long distances. While less immediately dangerous than explosive eruptions, basaltic lava flows can destroy structures and infrastructure in their path, and volcanic gases released during these eruptions can affect air quality over a wide area.
Eruption History Summary
Esmeralda Bank has 6 recorded eruptions in the geological database, spanning from 1944 CE to 1987 CE. The most powerful recorded event was an explosive event producing ash plumes up to several kilometers in 1964 CE, reaching VEI 2 on the Volcanic Explosivity Index. This eruption frequency indicates a moderately active volcanic system with periodic reawakenings. The most recent eruption in 1987 CE places this volcano within the modern era of volcanological observation.
Significance
With 6 recorded eruptions on file, Esmeralda Bank has enough documented activity to help scientists identify patterns in its eruptive behavior. Given its recent activity, Esmeralda Bank is closely monitored by geological survey organizations to provide early warning of future unrest.
GVP Reference Summary
Esmeralda Bank is a massive submarine volcano with three cones oriented N-S over about 15 km. The high points on the crater rim of the large middle edifice, with a collapse scarp open to the W, are about 75 m below the ocean surface. Frequent sulfur-rich surface bubbling and water discoloration have been observed, which have variously been attributed to eruptive events or fumarolic activity.
— Smithsonian Institution, Global Volcanism Program
6 Recorded Eruptions
| Year | VEI | Type | Area |
|---|---|---|---|
| 1987 | 0 | Uncertain Eruption | — |
| 1982 | 0 | Uncertain Eruption | — |
| 1975 | 0 | Uncertain Eruption | — |
| 1970 | 0 | Uncertain Eruption | — |
| 1964 | 2 | Uncertain Eruption | — |
| 1944 | 0 | Uncertain Eruption | — |
Real-Time Data
USGS Alert Level
Thermal Anomalies
Frequently Asked Questions About Esmeralda Bank
Is Esmeralda Bank an active volcano?+
Esmeralda Bank is not currently classified as active. Its activity evidence is listed as "Unrest / Holocene." No recorded eruptions have been documented. However, no volcano is ever considered permanently extinct.
When did Esmeralda Bank last erupt?+
The most recent recorded eruption of Esmeralda Bank occurred in 1987 CE with a Volcanic Explosivity Index (VEI) of 0. The eruption was classified as a "Uncertain Eruption." Esmeralda Bank has 6 recorded eruptions in total.
How high is Esmeralda Bank?+
Esmeralda Bank has a summit elevation of -74 meters (-243 feet) above sea level. With an elevation of -74 meters (below sea level), this is a submarine or submerged volcanic feature.
What type of volcano is Esmeralda Bank?+
Esmeralda Bank is classified as a Stratovolcano. Stratovolcanoes (also called composite volcanoes) are steep, conical volcanoes built up by many layers of hardened lava, tephra, and volcanic ash. They are among the most common and dangerous types, known for explosive eruptions.
Where is Esmeralda Bank located?+
Esmeralda Bank is located in United States, in the Northwestern Pacific Volcanic Regions. More specifically, it lies within the Mariana Volcanic Arc. Its exact coordinates are 14.958° latitude, 145.249° longitude.
Is it safe to visit Esmeralda Bank?+
Esmeralda Bank can generally be visited, but as with any volcano, visitors should check local conditions and any advisory notices before traveling. United States may have specific regulations for accessing volcanic areas. Guided tours are often the safest and most informative way to experience a volcano.
