Supply Reef | U.S. Geological Survey
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Supply Reef
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Supply Reef
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Supply Reef is a conical submarine volcano in the northern Mariana Islands that rises to within 8 m of the sea surface.
Facts Block
Location:
Commonwealth of the Northern Mariana Islands
Latitude:
20.13° N
Longitude:
145.1° E
Elevation:
-8 (m) -26 (f)
Volcano type:
Submarine
Composition:
Andesite
Most recent eruption:
1989 CE
Threat Potential:
Low/Very Low*
*based on the
National Volcano Early Warning System
Summary
Supply Reef is a conical submarine volcano in the northern Mariana Islands that rises to within 8 m of the sea surface. The andesitic seamount lies about 10 km NW of the Maug Islands, the emergent summit of a submarine volcano that is joined to Supply Reef by a low saddle at a depth of about 1800 m. Several submarine eruptions have been detected by sonar signals originating from points very approximately located at distances of 15-25 km NW of Supply Reef. From the
Smithsonian Global Volcanism Program
July 19, 2019
Volcanic hazards in the Pacific U.S. Territories
Volcanic hazards in the Pacific U.S. Territories
The Commonwealth of the Northern Mariana Islands, Guam, and American Samoa lie along the western side of the famed Pacific Ring of Fire. Here, the processes of active island and submarine volcanoes produce activity both underwater and in the atmosphere that poses potential hazards to the daily lives of residents and travelers. Since 2000, CNMI volcanoes have erupted six times, and one...
Authors
Gabrielle Tepp, Brian Shiro, William W. Chadwick
By
Volcano Hazards Program
Volcano Science Center
Agrigan
Ahyi Seamount
Alamagan
Anatahan
Asuncion
Daikoku Seamount
East Diamante
Esmeralda Bank
Farallon de Pajaros
Fukujin Seamount
Guguan
Kasuga 2
Maug Islands
Ofu-Olosega
Pagan
Ruby
Sarigan
South Sarigan Seamount
Supply Reef
Ta'u Island
Tutuila Island
Zealandia Bank
Subduction Zone Science
October 22, 2018
2018 update to the U.S. Geological Survey national volcanic threat assessment
2018 update to the U.S. Geological Survey national volcanic threat assessment
When erupting, all volcanoes pose a degree of risk to people and infrastructure, however, the risks are not equivalent from one volcano to another because of differences in eruptive style and geographic location. Assessing the relative threats posed by U.S. volcanoes identifies which volcanoes warrant the greatest risk-mitigation efforts by the U.S. Geological Survey and its partners...
Authors
John W. Ewert, Angela K. Diefenbach, David W. Ramsey
By
Volcano Hazards Program
Volcano Science Center
Agrigan
Ahyi Seamount
Alamagan
Anatahan
Asuncion
Belknap
Black Butte Crater Lava Field
Black Rock Desert Volcanic Field
Blue Lake Crater
Carrizozo Lava Flow
Cascade Range Weekly Update
Cinnamon Butte
Clear Lake Volcanic Field
Coso Volcanic Field
Crater Lake
Craters of the Moon Volcanic Field
Daikoku Seamount
Davis Lake Volcanic Field
Devils Garden Lava Field
Diamond Craters Volcanic Field
Dotsero Volcanic Center
East Diamante
Esmeralda Bank
Farallon de Pajaros
Fukujin Seamount
Glacier Peak
Guguan
Haleakalā
Hell's Half Acre Lava Field
Hualālai
Indian Heaven Volcanic Field
Jordan Craters Volcanic Field
Kama‘ehuakanaloa
Kasuga 2
Kīlauea
Lassen Volcanic Center
Long Valley Caldera
Mammoth Mountain
Markagunt Plateau Volcanic Field
Maug Islands
Mauna Kea
Mauna Loa
Medicine Lake
Mono Lake Volcanic Field
Mono-Inyo Craters
Mount Adams
Mount Bachelor
Mount Baker
Mount Hood
Mount Jefferson
Mount Rainier
Mount Shasta
Mount St. Helens
Newberry
Ofu-Olosega
Pagan
Red Hill-Quemado Volcanic Field
Ruby
Salton Buttes
San Francisco Volcanic Field
Sand Mountain Volcanic Field
Sarigan
Soda Lakes
South Sarigan Seamount
Supply Reef
Ta'u Island
Three Sisters
Tutuila Island
Ubehebe Craters
Uinkaret Volcanic Field
Valles Caldera
Wapi Lava Field
Weekly Update
West Crater Volcanic Field
Yellowstone
Zealandia Bank
Zuni-Bandera Volcanic Field
August 1, 1995
Volcanic investigations in the Commonwealth of the Northern Mariana Islands, April to May 1994
Volcanic investigations in the Commonwealth of the Northern Mariana Islands, April to May 1994
A team of U.S. Geological Survey geologists, a seismologist, and technicians gathered new geologic, seismic, and deformation data in the Commonwealth of the Northern Mariana Islands (CNMI). Nine volcanic islands on the active East Mariana Ridge north of Saipan were examined between April 20 and May 3, 1994. In addition, a new radio-telemetry seismic station was installed on the island of...
Authors
M. K. Sako, F. A. Trusdell, R. Y. Koyanagi, George Kojima, R. B. Moore
By
Natural Hazards Mission Area
Volcano Hazards Program
Volcano Science Center
Agrigan
Ahyi Seamount
Alamagan
Anatahan
Asuncion
Daikoku Seamount
East Diamante
Esmeralda Bank
Farallon de Pajaros
Fukujin Seamount
Guguan
Kasuga 2
Kīlauea
Maug Islands
Pagan
Ruby
Sarigan
South Sarigan Seamount
Supply Reef
Zealandia Bank
View All
Facts Block
Location:
Commonwealth of the Northern Mariana Islands
Latitude:
20.13° N
Longitude:
145.1° E
Elevation:
-8 (m) -26 (f)
Volcano type:
Submarine
Composition:
Andesite
Most recent eruption:
1989 CE
Threat Potential:
Low/Very Low*
*based on the
National Volcano Early Warning System
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