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Japan

Eruption of Shinmoedake on 27 January 2011
Posted inNews

Two Active Volcanoes in Japan May Share a Magma Source

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 31 July 20186 December 2021

Evidence collected following the 2011 eruption of Japan’s Shinmoedake volcano suggests that the powerful event affected the behavior of an active caldera nearby.

Earthquakes, like two that struck Kumamoto, Japan, within 28 hours in April 2016, cause varying levels of damage to buildings
Posted inNews

Damage Assessment by Laser Could Focus Postearthquake Response

by L. G. Shields 6 February 20189 December 2022

Airborne lidar surveys taken before and after a powerful 2016 earthquake in Japan revealed the potential for such surveys to identify hard-hit buildings quickly. 

Researchers examine unusual ground motion associated with the deepest major earthquake in the seismological record.
Posted inResearch Spotlights

The Curious Case of the Ultradeep 2015 Ogasawara Earthquake

by Terri Cook 28 December 20172 March 2022

Unusual ground motion associated with the deepest major earthquake in the seismological record is due to both its great depth and its origin away from the subducting slab.

Monitoring team collecting a marine sediment sample near Fukushima Daiichi.
Posted inNews

IAEA Affirms Japan’s Fukushima-Related Radioactivity Monitoring

Tim Hornyak, Science Writer by Tim Hornyak 11 October 20171 April 2024

Laboratories outside Japan have validated the results. Marine radioactivity levels from the nuclear disaster have fallen, but questions remain years after the meltdown.

Posted inNews

Faults off Alaska Look Akin to Those Behind 2011 Japan Disaster

Katherine Kornei, Science Writer by Katherine Kornei 21 September 201711 January 2022

In a seismically quiet segment of Alaska’s subduction zone lie faults with structures similar to those of the system that caused the deadly Tohoku earthquake and tsunami.

Researchers analyze how ambient seismic waves are affected by volcanic activity
Posted inResearch Spotlights

Quiet Volcanic Activity Changes Speed of Ambient Seismic Waves

Sarah Stanley, Science Writer by Sarah Stanley 19 September 201711 May 2022

Seismic data collected continuously for 4 years could improve understanding of geological structures that underlie Japan’s Izu Oshima volcanic island.

Posted inEditors' Vox

Subduction, Stratosphere, Starspots, and Sushi

by Jenny Lunn, Thorsten W. Becker, D. J. Knipp, A. Yau and Minghua Zhang 13 June 201718 January 2022

Highlights from AGU’s joint meeting with the Japan Geophysical Union.

Exhibits and poster hall at the joint JpGU
Posted inAGU News

Japan-U.S. Joint Meeting: Geoscience for a Borderless World

by L. Parr 12 June 20176 December 2021

The groundbreaking conference included sessions in Japanese, sessions in English, and sessions in which presenters used English language slides but could speak in Japanese.

Cracking of a fluid barrier beneath Japan’s Mount Ontake may have caused the deadly eruption in 2014
Posted inResearch Spotlights

What Caused the Fatal 2014 Eruption of Japan's Mount Ontake?

by Terri Cook 17 March 20176 December 2021

Analysis of the change in the stratovolcano's tilt just prior to the explosion suggests that the cracking of a previously intact fluid barrier caused the country's deadliest eruption since 1926.

An offshore subduction zone drove the tsunami that devastated Japan in 2011.
Posted inResearch Spotlights

An Up Close Look at the Megaquakes That Cause Tsunamis

by S. Witman 25 January 20176 December 2021

Researchers recreate changes in the seafloor during Japan's devastating 2011 tsunami.

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