Global Volcanism Program | Romanche Fracture Zone

Romanche Fracture Zone

Country	Undersea Features
Volcanic Region	Central Mid-Atlantic Rift Volcanic Province
Landform \| Volc Type	Cluster \| Fissure vent
Last Known Eruption	Unknown - Evidence Uncertain
Coordinates	0.433°S, 19.596°W
Elevation	-1,528 m (-5,013 ft)
Volcano Number	385030
Google Earth Placemark with Features
Cite Volcano Profile

Latest Weekly Volcanic Activity Report

The Global Volcanism Program has no Weekly Volcanic Activity Reports available for Romanche Fracture Zone.

Latest Bulletin Report

The Global Volcanism Program has no Bulletin Reports available for Romanche Fracture Zone.

Weekly Volcanic Activity Reports

The Global Volcanism Program has no Weekly Reports available for Romanche Fracture Zone.

Bulletin Reports

The Global Volcanism Program has no Bulletin Reports available for Romanche Fracture Zone.

General Information

Basic Data

Volcano Number

Last Known Eruption

Elevation

Latitude
Longitude

385030

Unknown - Evidence Uncertain

-1,528 m / -5,013 ft

0.433°S
19.596°W

Morphology

Volcano Landform
Cluster

Volcano Types
Fissure vent
Submarine

Rock Types

Major
No Data (checked)

Tectonic Setting

Rift zone
Oceanic crust (< 15 km)

Population

Within 5 km
Within 10 km
Within 30 km
Within 100 km

0
0
0
0

Geological Summary

Several reports of submarine disturbances of possible volcanic origin near the equator were noted by Neumann van Padang et al. (1967, CAVW). Ship captains have reported numerous submarine eruptions during the 18th and 19th centuries over a broad area in this part of the Atlantic, including descriptions of seaquakes, turbulent water, columns of smoke, floating pumice, submarine banks, or small ephemeral islands. These accounts were tentatively collectively assigned by the CAVW to a seamount along the Romanche Fracture Zone, although their locations span a broad area up to 400 km W of the assigned location. Floating "volcanic ash" was collected in 1836 from a site near the Mid-Atlantic Rift, well E of the seamount. The validity of these reports is not clear, although three of these events were considered by the CAVW to possibly represent submarine eruptions.

References

The following references have all been used during the compilation of data for this volcano, it is not a comprehensive bibliography.

Neumann van Padang M, Richards A F, Machado F, Bravo T, Baker P E, Le Maitre R W, 1967. Atlantic Ocean. Catalog of Active Volcanoes of the World and Solfatara Fields, Rome: IAVCEI, 21: 1-128.

Eruptive History

There is data available for 0 confirmed eruptive period.

[ 1836 Nov 16 (on or before) ± 15 days ] Uncertain Eruption

Episode 1 | Eruption (Explosive / Effusive)

0.58 S 15.83 W

1836 Nov 16 (on or before) ± 15 days - Unknown

Evidence from Unknown

List of 1 Events for Episode 1 at 0.58 S 15.83 W

	Start Date	End Date	Event Type	Event Remarks
	1836 Nov (on or before)	- - - -	VEI (Explosivity Index)

[ 1816 Dec 8 ] Uncertain Eruption

Episode 1 | Eruption (Explosive / Effusive)

0.53 S 17.77 W

1816 Dec 8 - Unknown

Evidence from Unknown

List of 1 Events for Episode 1 at 0.53 S 17.77 W

	Start Date	End Date	Event Type	Event Remarks
	1816 Dec 8	- - - -	VEI (Explosivity Index)

[ 1761 May 3 ] Uncertain Eruption

Episode 1 | Eruption (Explosive / Effusive)

0.38 S, 19.17 W

1761 May 3 - Unknown

Evidence from Unknown

List of 1 Events for Episode 1 at 0.38 S, 19.17 W

	Start Date	End Date	Event Type	Event Remarks
	1761 May 3	- - - -	VEI (Explosivity Index)

Synonyms and Subfeatures

The Global Volcanism Program has no synonyms or subfeatures listed for Romanche Fracture Zone.

Photo Gallery

The Global Volcanism Program has no photographs available for Romanche Fracture Zone.

Smithsonian Sample Collections Database

There are no samples for Romanche Fracture Zone in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.

External Sites

Copernicus Browser

The Copernicus Browser replaced the Sentinel Hub Playground browser in 2023, to provide access to Earth observation archives from the Copernicus Data Space Ecosystem, the main distribution platform for data from the EU Copernicus missions.

MIROVA

Middle InfraRed Observation of Volcanic Activity (MIROVA) is a near real time volcanic hot-spot detection system based on the analysis of MODIS (Moderate Resolution Imaging Spectroradiometer) data. In particular, MIROVA uses the Middle InfraRed Radiation (MIR), measured over target volcanoes, in order to detect, locate and measure the heat radiation sourced from volcanic activity.

MODVOLC Thermal Alerts

Using infrared satellite Moderate Resolution Imaging Spectroradiometer (MODIS) data, scientists at the Hawai'i Institute of Geophysics and Planetology, University of Hawai'i, developed an automated system called MODVOLC to map thermal hot-spots in near real time. For each MODIS image, the algorithm automatically scans each 1 km pixel within it to check for high-temperature hot-spots. When one is found the date, time, location, and intensity are recorded. MODIS looks at every square km of the Earth every 48 hours, once during the day and once during the night, and the presence of two MODIS sensors in space allows at least four hot-spot observations every two days. Each day updated global maps are compiled to display the locations of all hot spots detected in the previous 24 hours. There is a drop-down list with volcano names which allow users to 'zoom-in' and examine the distribution of hot-spots at a variety of spatial scales.

WOVOdat
   Single Volcano View
   Temporal Evolution of Unrest
   Side by Side Volcanoes

WOVOdat is a database of volcanic unrest; instrumentally and visually recorded changes in seismicity, ground deformation, gas emission, and other parameters from their normal baselines. It is sponsored by the World Organization of Volcano Observatories (WOVO) and presently hosted at the Earth Observatory of Singapore.

GVMID Data on Volcano Monitoring Infrastructure The Global Volcano Monitoring Infrastructure Database GVMID, is aimed at documenting and improving capabilities of volcano monitoring from the ground and space. GVMID should provide a snapshot and baseline view of the techniques and instrumentation that are in place at various volcanoes, which can be use by volcano observatories as reference to setup new monitoring system or improving networks at a specific volcano. These data will allow identification of what monitoring gaps exist, which can be then targeted by remote sensing infrastructure and future instrument deployments.

Volcanic Hazard Maps

The IAVCEI Commission on Volcanic Hazards and Risk has a Volcanic Hazard Maps database designed to serve as a resource for hazard mappers (or other interested parties) to explore how common issues in hazard map development have been addressed at different volcanoes, in different countries, for different hazards, and for different intended audiences. In addition to the comprehensive, searchable Volcanic Hazard Maps Database, this website contains information about diversity of volcanic hazard maps, illustrated using examples from the database. This site is for educational purposes related to volcanic hazard maps. Hazard maps found on this website should not be used for emergency purposes. For the most recent, official hazard map for a particular volcano, please seek out the proper institutional authorities on the matter.

EarthScope Consortium SAGE seismic stations/networks

EarthScope Consortium operates the NSF Geodetic Facility for the Advancement of Geoscience (GAGE) and NSF Seismological Facility for the Advancement of Geoscience (SAGE). The linked map shows the location of seismic stations from all available networks (permanent or temporary) within a radius of 0.18° (about 20 km at mid-latitudes) from the given location of Romanche Fracture Zone. Users can customize a variety of filters and options in the left panel. Note that if there are no stations are known the map will default to show the entire world with a "No data matched request" error notice.

Large Eruptions of Romanche Fracture Zone

Information about large Quaternary eruptions (VEI >= 4) is cataloged in the Large Magnitude Explosive Volcanic Eruptions (LaMEVE) database of the Volcano Global Risk Identification and Analysis Project (VOGRIPA).

EarthChem

EarthChem develops and maintains databases, software, and services that support the preservation, discovery, access and analysis of geochemical data, and facilitate their integration with the broad array of other available earth science parameters. EarthChem is operated by a joint team of disciplinary scientists, data scientists, data managers and information technology developers who are part of the NSF-funded data facility Integrated Earth Data Applications (IEDA). IEDA is a collaborative effort of EarthChem and the Marine Geoscience Data System (MGDS).

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