The Global Volcanism Program has no activity reports for Mashu.
The Global Volcanism Program has no Weekly Reports available for Mashu.
The Global Volcanism Program has no Bulletin Reports available for Mashu.
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.
Synonyms |
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| Masyu | ||||
Cones |
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| Feature Name | Feature Type | Elevation | Latitude | Longitude |
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Kamuinupuri
Mashudake |
Stratovolcano | 388 m | 43° 34' 3" N | 144° 33' 19" E |
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Nishibetsu
Nisibetu |
Stratovolcano | 797 m | 43° 33' 13" N | 144° 34' 54" E |
Craters |
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| Feature Name | Feature Type | Elevation | Latitude | Longitude |
| Mashu | Caldera | 354 m | 43° 34' 50" N | 144° 32' 22" E |
Domes |
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| Feature Name | Feature Type | Elevation | Latitude | Longitude |
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Kamuishu
Kamuissyuto Kamuishuto |
Dome | 354 m | 43° 34' 45" N | 144° 31' 39" E |
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There is data available for 7 confirmed Holocene eruptive periods.
1080 ± 100 years Confirmed Eruption Max VEI: 5
| Episode 1 | Eruption Episode | Kamuinupuri, Tephra layer Ma-b | |||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1080 ± 100 years - Unknown | Evidence from Isotopic: 14C (calibrated) | |||||||||||||||||||||||||||||
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List of 4 Events for Episode 1 at Kamuinupuri, Tephra layer Ma-b
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0350 ± 100 years Confirmed Eruption Max VEI: 2
| Episode 1 | Eruption Episode | Kamuinupuri, Tephra layer Ma-c1 | |||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0350 ± 100 years - Unknown | Evidence from Isotopic: 14C (calibrated) | |||||||||||||||||||||||||||||
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List of 4 Events for Episode 1 at Kamuinupuri, Tephra layer Ma-c1
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0150 ± 100 years Confirmed Eruption Max VEI: 4
| Episode 1 | Eruption Episode | Kamuinupuri, Tephra layers Ma-c4-c2 | |||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0150 ± 100 years - Unknown | Evidence from Isotopic: 14C (calibrated) | |||||||||||||||||||||||||||||
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List of 4 Events for Episode 1 at Kamuinupuri, Tephra layers Ma-c4-c2
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2050 BCE ± 40 years Confirmed Eruption Max VEI: 4
| Episode 1 | Eruption Episode | Kamuinupuri, Tephra layer Ma-d | ||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2050 BCE ± 40 years - Unknown | Evidence from Isotopic: 14C (calibrated) | ||||||||||||||||||||||||||||||||||
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List of 5 Events for Episode 1 at Kamuinupuri, Tephra layer Ma-d
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2800 BCE ± 750 years Confirmed Eruption Max VEI: 3
| Episode 1 | Eruption Episode | Kamuinupuri, Tephra layer Ma-e' | |||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2800 BCE ± 750 years - Unknown | Evidence from Correlation: Tephrochronology | |||||||||||||||||||||||||||||
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List of 4 Events for Episode 1 at Kamuinupuri, Tephra layer Ma-e'
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3550 BCE ± 40 years Confirmed Eruption Max VEI: 4
| Episode 1 | Eruption Episode | Kamuinupuri, Tephra layer Ma-e | ||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3550 BCE ± 40 years - Unknown | Evidence from Isotopic: 14C (calibrated) | ||||||||||||||||||||||||||||||||||
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List of 5 Events for Episode 1 at Kamuinupuri, Tephra layer Ma-e
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5550 BCE ± 100 years Confirmed Eruption Max VEI: 6
| Episode 1 | Eruption Episode | Tephra layers Ma-j-f | ||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 5550 BCE ± 100 years - Unknown | Evidence from Isotopic: 14C (calibrated) | ||||||||||||||||||||||||||||||||||
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List of 5 Events for Episode 1 at Tephra layers Ma-j-f
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There is no Deformation History data available for Mashu.
There is no Emissions History data available for Mashu.
Kamuinupuri is a small cone on the SE rim of Mashu caldera. Growth of Kamuinupuri post-dated the roughly 7,000-year-old caldera collapse. The steep scarp below the summit is the NE wall of a 1.2 x 1.5 km caldera that formed at the summit about 1,000 years ago.
Mashu is a 6-km-wide caldera on the northernmost Japanese island of Hokkaido, seen here from the SW rim with the Kamuishi Island lava dome in the center of the lake. It truncates a stratovolcano on the ESE rim of the larger Kutcharo caldera. The latest eruption of Mashu took place about 1,000 years from Kamuinupuri, the lower flanks of which appear to the far-right. 
The deep blue waters of 6-km-wide Mashu caldera are seen here from its western rim. The small island of Kamuishu in the center of Lake Mashu (right-center) is the tip of a mostly submerged lava dome. Mashu is a Holocene caldera of a volcano constructed on the ESE rim of the Kussharo caldera. Following caldera collapse, Kamuinupuri (whose lower flanks are visible at the far right) formed beginning about 4,000 years ago. The maps shown below have been scanned from the GVP map archives and include the volcano on this page. Clicking on the small images will load the full 300 dpi map. Very small-scale maps (such as world maps) are not included. The maps database originated over 30 years ago, but was only recently updated and connected to our main database. We welcome users to tell us if they see incorrect information or other problems with the maps; please use the Contact GVP link at the bottom of the page to send us email.
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Title: China, Japan, Soviet Union Publisher: DMA Aerospace Center Country: Japan, USSR, China Year: 1988 Series: ONC Map Type: Topographic Scale: 1:1,000,000 |
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Title: Japan, Soviet Union Publisher: DMA Aerospace Center Country: Japan, USSR Year: 1987 Series: TPC Map Type: Topographic Scale: 1:500,000 |
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Title: (A) Q Maps of Japan Landforms, Geol, Tect: NEast Publisher: Univ of Tokyo Press & Japan Association for Quaternary Research Country: Japan Year: 1987 Map Type: Geology Scale: 1:1,000,000 |
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Title: Historical Japan Publisher: National Geographic Society Country: Japan Year: 1984 Series: National Geographic Map Type: Geographic Scale: 1:2,982,000 |
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Title: Geol Map of Japan/ Geol Atlas Publisher: Geol Survey of Japan Country: Japan Year: 1982 Map Type: Geology Scale: 1:1,000,000 |
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Title: North Japan Publisher: Geographical Survey Institute of Japan Country: Japan Year: 1980 Series: CIM 1:1 mil Map Type: Topographic Scale: 1:1,000,000 |
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Title: North Japan Publisher: Geographical Survey Institute of Japan Country: Japan Year: 1980 Map Type: Topographic Scale: 1:1,000,000 |
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Title: North Japan Publisher: Geographical Survey Institute of Japan Country: Japan Year: 1980 Map Type: Topographic Scale: 1:1,000,000 |
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Title: Geological Map of Japan Publisher: Geological Survey of Japan Country: Japan Year: 1978 Map Type: Geology Scale: 1:1,000,000 |
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Title: Geological Map of Japan Publisher: Geological Survey of Japan Country: Japan Year: 1978 Map Type: Geology Scale: 1:1,000,000 |
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Title: Distribution Map of Hot Springs in Japan Publisher: Geological Survey of Japan Country: Japan Year: 1975 Series: 1:2,000,000 Map Type: Unknown Scale: 1:2,000,000 |
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Title: (Japanese) Geol map of Japan Publisher: Geographical Survey Institute of Japan Country: Japan Year: 1974 Series: from Natl Atlas Japan Map Type: Geology Scale: 1:2,500,000 |
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Title: Landform Classification Publisher: Geographical Survey Institute of Japan Country: Japan Year: 1972 Series: from Natl Atlas Japan Map Type: Unknown (Land) Scale: 1:2,500,000 |
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Title: Land Use Publisher: Geographical Survey Institute of Japan Country: Japan Year: 1972 Series: from Natl Atlas Japan Map Type: Unknown (Land) Scale: 1:2,500,000 |
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Title: Population Distribution Publisher: Geographical Survey Institute of Japan Country: Japan Year: 1972 Series: from Natl Atlas Japan Map Type: Unknown Scale: 1:2,500,000 |
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Title: River Systems Publisher: Geographical Survey Institute of Japan Country: Japan Year: 1972 Series: from Natl Atlas Japan Map Type: Unknown Scale: 1:2,500,000 |
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Title: North Japan Publisher: Geographical Survey Institute of Japan Country: Japan Year: 1966 Map Type: Topographic Scale: 1:1,000,000 |
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Title: Kushiro Publisher: US Army Map Service Country: Japan Year: 1955 Series: AMS Map Type: Topographic Scale: 1:250,000 |
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Title: Asahikawa Publisher: US Army Map Service Country: Japan Year: 1955 Series: AMS Map Type: Topographic Scale: 1:250,000 |
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Title: Hakodate Publisher: US Army Map Service Country: Japan Year: 1943 Series: AMS Map Type: Topographic Scale: 1:1,000,000 |
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Title: Nemuro Publisher: US Army Map Service Country: Japan Year: 1942 Series: AMS Map Type: Topographic Scale: 1:1,000,000 |
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There are no samples for Mashu in the Smithsonian's NMNH Department of Mineral Sciences Rock and Ore collection.
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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. |
| 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. |
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Sentinel Hub Playground
Sentinel Hub EO Browser |
The Sentinel Hub Playground provides a quick look at any Sentinel-2 image in any combination of the bands and enhanced with image effects; Landsat 8, DEM and MODIS are also available. Sentinel Hub is an engine for processing of petabytes of satellite data. It is opening the doors for machine learning and helping hundreds of application developers worldwide. It makes Sentinel, Landsat, and other Earth observation imagery easily accessible for browsing, visualization and analysis. Sentinel Hub is operated by Sinergise |
| IRIS seismic stations/networks | Incorporated Research Institutions for Seismology (IRIS) Data Services map showing 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 Mashu. 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. |
| UNAVCO GPS/GNSS stations | Geodetic Data Services map from UNAVCO showing the location of GPS/GNSS stations from all available networks (permanent or temporary) within a radius of 20 km from the given location of Mashu. Users can customize the data search based on station or network names, location, and time window. Requires Adobe Flash Player. |
| DECADE Data | The DECADE portal, still in the developmental stage, serves as an example of the proposed interoperability between The Smithsonian Institution's Global Volcanism Program, the Mapping Gas Emissions (MaGa) Database, and the EarthChem Geochemical Portal. The Deep Earth Carbon Degassing (DECADE) initiative seeks to use new and established technologies to determine accurate global fluxes of volcanic CO2 to the atmosphere, but installing CO2 monitoring networks on 20 of the world's 150 most actively degassing volcanoes. The group uses related laboratory-based studies (direct gas sampling and analysis, melt inclusions) to provide new data for direct degassing of deep earth carbon to the atmosphere. |
| Large Eruptions of Mashu | 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). |
