The 2017 Nishinoshima eruption: combined analysis using Himawari-8 and multiple high-resolution satellite images

Kaneko, Takayuki; Maeno, Fukashi; Yasuda, Atsushi; Takeo, Minoru; Takasaki, Kenji

doi:10.1186/s40623-019-1121-8

Cited by 27 publications

(18 citation statements)

References 16 publications

(28 reference statements)

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“… 13 , 14 ), and lava domes (e.g. 15 ). The high temporal resolution data from geostationary satellites such as the Geostationary Operational Environmental Satellite (GOES), Meteosat (with the Spinning Enhanced Visible and InfraRed Imager SEVIRI sensor) and Multifunctional Transport Satellites (MTSAT) were used by 16 , 17 as well as by 18 , 19 (HOTSAT system) 20 , (HOTVOLC system) and 21 (RST VOLC ) among others, to analyse volcanic activity in near real-time.…”

Section: Introductionmentioning

confidence: 99%

The short life of the volcanic island New Late’iki (Tonga) analyzed by multi-sensor remote sensing data

Plank

Marchese

Genzano

et al. 2020

Sci Rep

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Satellite-based Earth observation plays a key role for monitoring volcanoes, especially those which are located in remote areas and which very often are not observed by a terrestrial monitoring network. In our study we jointly analyzed data from thermal (Moderate Resolution Imaging Spectrometer MODIS and Visible Infrared Imaging Radiometer Suite VIIRS), optical (Operational Land Imager and Multispectral Instrument) and synthetic aperture radar (SAR) (Sentinel-1 and TerraSAR-X) satellite sensors to investigate the mid-October 2019 surtseyan eruption at Late’iki Volcano, located on the Tonga Volcanic Arc. During the eruption, the remains of an older volcanic island formed in 1995 collapsed and a new volcanic island, called New Late’iki was formed. After the 12 days long lasting eruption, we observed a rapid change of the island’s shape and size, and an erosion of this newly formed volcanic island, which was reclaimed by the ocean two months after the eruption ceased. This fast erosion of New Late’iki Island is in strong contrast to the over 25 years long survival of the volcanic island formed in 1995.

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Section: Introductionmentioning

confidence: 99%

The short life of the volcanic island New Late’iki (Tonga) analyzed by multi-sensor remote sensing data

Plank

Marchese

Genzano

et al. 2020

Sci Rep

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“…Eruption in isolated volcanic islands are becoming the focus of attention for their significant growth, as in the case of Nishinoshima (Maeno et al 2016;Kaneko et al 2019), and for the hazardous nature, as in Anak Krakatau (Williams et al 2019;Perttu et al 2020) and White Island more recently (Dempsey et al 2020). The existence of abundant water tends to cause hazardous eruptions like phreatomagmatic and phreatic explosions (Mastin and Witter 2000;Stix and Moor 2018).…”

Section: Introductionmentioning

confidence: 99%

Identification of infrasonic and seismic components of tremors in single-station records: application to the 2013 and 2018 events at Ioto Island, Japan

Kurokawa

Ichihara

2020

Earth Planets Space

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Infrasonic stations are sparse at many volcanoes, especially those on remote islands and those with less frequent eruptions. When only a single infrasound station is available, the seismic–infrasonic cross-correlation method has been used to extract infrasound from wind noise. However, it does not work with intense seismicity and sometimes mistakes ground-to-atmosphere signals as infrasound. This paper proposes a complementary method to identify the seismic component and the infrasonic component using a single microphone and a seismometer. We applied the method to estimate the surface activity on Ioto Island. We focused on volcanic tremors during the phreatic eruption on April 11, 2013, and during an unconfirmed event on September 12, 2018. We used the spectral amplitude ratios of the vertical ground motion to the pressure oscillation and compared those for the tremors with those for known signals generated by volcano-tectonic earthquakes and airplanes flying over the station. We were able to identify the infrasound component in the part of the seismic tremor with the 2013 eruption. On the other hand, the tremor with the unconfirmed 2018 event was accompanied by no apparent infrasound. We interpreted the results that the infrasound with the 2013 event was excited by the vent opening or the ejection of ballistic rocks, and the 2018 event was not an explosive eruption either on the ground or in the shallow water. If there was any gas (and ash) emission, it might have occurred gently undersea. As the method uses the relative values of on-site records instead of the absolute values, it is available even if the instrument sensitivity and the station site effects are poorly calibrated.

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“…1a). The Nishinoshima volcano provides a unique opportunity to study island-forming eruption processes (e.g., Maeno et al 2016;Shinohara et al 2017;Takagi et al 2017;Kaneko et al 2019). The island has attracted the attention of geological researchers due to the development process of the continental crust associated with the subduction of the Pacific plate (e.g., Sano et al 2016;Tamura et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Two independent signals detected by ocean bottom electromagnetometers during a non-eruptive volcanic event: Ogasawara Island arc volcano, Nishinoshima

Baba

Tada

Ichihara

et al. 2020

Earth Planets Space

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Nishinoshima is an active oceanic island arc volcano situated approximately 1000 km south of Tokyo, Japan. Since 2016, marine electromagnetic observations using ocean bottom electromagnetometers have been conducted around the island to investigate the electrical structure beneath the volcano for the first time. In contrast to the original purpose of the experiment, the data collected at five sites deployed in 2016-2017 showed distinct time variations in the magnetic field and the tilt of the volcano's slope. These time variations occurred coincidentally in mid-November 2016; this was during a quiet period between eruptions in 2015 and in 2017. The independence between the observed total magnetic force and tilt data was verified, highlighting that these variations were not artificial rather, associated with volcanic activity that did not invoke an eruption. Sources for demagnetization and deflation were estimated beneath the volcanic slope in the northeast of Nishinoshima Island, assuming a magnetic dipole and a spherical volume change, respectively. The resultant dipole moment and the volume change were too large to maintain simple source assumptions. However, the limited available data only enabled quantitative discussion under simple model settings, suggesting that the source mechanisms were more complex. The observations from this study demonstrate that if deployed strategically, ocean bottom electromagnetometers are useful to monitor island volcano activities.

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The 2017 Nishinoshima eruption: combined analysis using Himawari-8 and multiple high-resolution satellite images

Cited by 27 publications

References 16 publications

The short life of the volcanic island New Late’iki (Tonga) analyzed by multi-sensor remote sensing data

The short life of the volcanic island New Late’iki (Tonga) analyzed by multi-sensor remote sensing data

Identification of infrasonic and seismic components of tremors in single-station records: application to the 2013 and 2018 events at Ioto Island, Japan

Two independent signals detected by ocean bottom electromagnetometers during a non-eruptive volcanic event: Ogasawara Island arc volcano, Nishinoshima

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