- Info & Contacts
The Global Volcanism Program has no activity reports for St. Andrew Strait.
The Global Volcanism Program has no Weekly Reports available for St. Andrew Strait.
The Global Volcanism Program has no Bulletin Reports available for St. Andrew Strait.
Summary of Holocene eruption dates and Volcanic Explosivity Indices (VEI).
|Start Date||Stop Date||Eruption Certainty||VEI||Evidence||Activity Area or Unit|
|1953 Jun 27||1957 Jan 28||Confirmed||2||Historical Observations||Tuluman|
|1883 Mar 28||Unknown||Confirmed||2||Historical Observations||Tuluman|
|0350 (?)||Unknown||Confirmed||Radiocarbon (uncorrected)||Lou Island (Bedal volcano)|
|0240 BCE ± 100 years||Unknown||Confirmed||Radiocarbon (uncorrected)||Lou Island (Bedal volcano)|
This compilation of synonyms and subsidiary features may not be comprehensive. Features are organized into four major categories: Cones, Craters, Domes, and Thermal Features. Synonyms of features appear indented below the primary name. In some cases additional feature type, elevation, or location details are provided.
|Lou | Saint Andrew Strait|
|Feature Name||Feature Type||Elevation||Latitude||Longitude|
|Bedul||Cone||213 m||2° 23' 0" S||147° 23' 0" E|
|Bulumorsum||Cone||270 m||2° 24' 0" S||147° 19' 0" E|
|Kombung||Cone||186 m||2° 23' 0" S||147° 21' 0" E|
|Monkul||Cone||221 m||2° 25' 0" S||147° 19' 0" E|
|Pam Lin||Cone||81 m||2° 30' 0" S||147° 20' 0" E|
|Pam Mandian||Cone||65 m||2° 30' 0" S||147° 20' 0" E|
|Cone||29 m||2° 26' 49" S||147° 19' 0" E|
|The St. Andrew Strait volcano is located in the Admiralty Islands north of Papua New Guinea. The volcanic complex consists of a series of overlapping Quaternary cones formed by rhyolitic lava flows and pyroclastic deposits on Lou and Tuluman Islands. Volcanism is aligned along a curved arc, extending through the 12-km-long Lou Island, which may represent an incipient caldera ring fracture. Tuluman Island, seen here from the SW with Lou Island 1.5 km away at the upper left, was formed during a 1953-1957 eruption.
Photo by Wally Johnson, 1964 (Australia Bureau of Mineral Resources).
|Intermittent submarine explosive and effusive eruptions from multiple vents during June 1953 to January 1957 created new islands that coalesced to form present-day Tuluman Island. Activity was most vigorous Feburary-March 1955 and near the end of the eruption in January 1957, when subaerial effusive activity dominated. This March 1960 view from the SW shows dark-colored rhyolitic lava flows at the far end of the island and lighter-colored deposits from eroded pyroclastic cones.
Photo courtesy of Wally Johnson, 1960 (Australia Bureau of Mineral Resources).
A listing of samples from the Smithsonian collections will be available soon.
|Large Eruptions of St. Andrew Strait||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).|
|WOVOdat||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.|
|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).|
|MODVOLC - HIGP MODIS Thermal Alert System||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.|
|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.|