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Japan

一个球形海底地震仪下降到海面
Posted inResearch Spotlights

小尺度对流搅动大洋岩石圈

Sarah Derouin, Science Writer by Sarah Derouin 6 March 20236 March 2023

海底扩张将岩石圈矿物组织成一个晶格,但小规模的对流混杂在最内层。

Diagram showing the proposed mechanism of the weakening of the Ryukyu Current.
Posted inEditors' Highlights

Weakened Kuroshio Slows Down the Ryukyu Current

by Takeyoshi Nagai 2 March 202323 February 2023

A combination of the weakened Kuroshio in the Tokara Strait and an increase in anticyclonic eddies led to the slowdown of the Ryukyu Current from 1993 to 2018.

An orb-shaped ocean bottom seismometer descending into the sea surface
Posted inResearch Spotlights

Small-Scale Convection Shuffles the Oceanic Lithosphere

Sarah Derouin, Science Writer by Sarah Derouin 21 February 20238 July 2024

Seafloor spreading organized lithospheric minerals into a lattice, but small-scale convection jumbled up the innermost layer.

2011年Tōhoku地震后日本Wakuya的鸟瞰图,显示出俯冲地震的破坏力。对太平洋俯冲带的持续重力监测有助于识别出大地震可能发生的地方。图片来源: U.S. Navy/Mass Communication Specialist 3rd Class Alexander Tidd, CC BY-NC 2.0
Posted inResearch Spotlights

东日本大地震前几个月的重力变化

Sarah Derouin, Science Writer by Sarah Derouin 25 October 202225 October 2022

研究人员利用GRACE卫星数据发现了发生在地球深部的地震事件之前的重力异常信号。

Bubbles rise toward the ocean surface.
Posted inNews

Device Made for the Moon May Aid in Carbon Sequestration on Earth

by Bill Morris 7 October 20227 October 2022

A pocket-sized device intended for use on the Moon could soon play a key role in Japan’s ambitious plans to sequester carbon dioxide.

A small coastal shipping town in Japan is devastated by an earthquake. In this photo taken from a plane, the wreckage of hundreds of buildings can be seen, and only a handful remain standing. In the center of the image, a small yacht is perched on top of one of the only remaining buildings. The town is surrounded by mountains and forests. One of the plane’s wheels is visible in the lower left corner of the image.
Posted inResearch Spotlights

Months of Gravity Changes Preceded the Tōhoku Earthquake

Sarah Derouin, Science Writer by Sarah Derouin 1 September 202225 October 2022

Using GRACE satellite data, researchers discovered anomalous gravimetric signals that occurred before a seismic event that started deep within Earth.

Esquema algoritmo de aprendizaje para estimar las magnitudes de terremotos sobre la base de señales de elastogravidad rápida.
Posted inNews

Monitoreando terremotos a la velocidad de la luz

by Mohammed El-Said 30 June 202230 June 2022

Nueva investigación utiliza la gravedad y un modelo de aprendizaje automático para estimar instantáneamente la magnitud y ubicación de grandes terremotos.

Illustration of the AI algorithm estimating large earthquakes’ magnitudes on the basis of prompt elastogravity signals (PEGS) traveling at the speed of light, much faster than seismic (P and S) waves.
Posted inNews

Monitoring Earthquakes at the Speed of Light

by Mohammed El-Said 2 June 20222 June 2022

New research uses gravity and a machine learning model to instantaneously estimate the magnitude and location of large earthquakes.

Muon detectors in a tunnel under Tokyo Bay
Posted inNews

Muography Array Under Tokyo Bay Spots Meteotsunami Waves

Tim Hornyak, Science Writer by Tim Hornyak 20 May 20227 March 2023

A new study shows how muons can be used to study tide and wave phenomena, helping secure coastal communities.

A view of a swamp on Rishiri Island, with trees and water in the foreground and a snowy mountain in the background
Posted inResearch Spotlights

Climate and Currents Shaped Japan’s Hunter-Gatherer Cultures

by Rebecca Dzombak 5 May 2022

New climate records from a peat bog show how two neighboring cultures responded differently to shifts in climate and ocean currents.

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