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subduction

A map showing vertical motions in southwest Japan 7 years after the 1946 Nankai earthquake
Posted inResearch Spotlights

Déjà Vu: Understanding Subduction Zones’ Cycle of Seismicity

by Terri Cook 3 June 201918 January 2022

A unique geodetic data set from Japan’s Nankai subduction zone offers an unparalleled opportunity to study surface deformation spanning almost an entire seismic cycle.

The Sun peeks over a ridge near the top of Mount Kinabalu in northern Borneo.
Posted inScience Updates

Deciphering the Fate of Plunging Tectonic Plates in Borneo

by S. Pilia, N. Rawlinson, A. Gilligan and F. Tongkul 28 May 201925 August 2022

What happens when subduction stops? A team of scientists installed a dense seismic network in Borneo to investigate causes and consequences of subduction termination.

Beartooth Uplift in Montana
Posted inScience Updates

Linking Observations and Modeling of Flat-Slab Subduction

by J. E. Saylor, E. Finzel and M. Jadamec 26 April 201918 January 2022

The Center for Tectonics and Tomography: Workshop on Flat Slab Subduction; Houston, Texas, 18–20 January 2019

The Yaeyama Islands in Okinawa, Japan
Posted inResearch Spotlights

Unraveling the Origin of Slow Earthquakes

by Terri Cook 22 January 20195 October 2022

Different nucleation styles detected in five slow-slip events in the same area of Japan’s Ryukyu subduction zone suggest the physical properties along this tectonic plate interface change over time.

San Cristóbal volcano in Nicaragua
Posted inNews

Can Earthquakes Trigger Volcanic Eruptions?

by B. Flaherty 2 January 20195 January 2022

A new study supports the idea that earthquakes may be associated with increased volcanic eruptions, but over longer time spans than prior research indicated.

An aerial view of the Andaman Islands, India
Posted inScience Updates

Investigating the Northern Indian Ocean’s Puzzling Geodynamics

by D. Pandey, S. Clemens and Marie Edmonds 28 December 201816 March 2022

International Ocean Discovery Program (IODP) Proposal Nurturing Workshop on Indian Ocean; Goa, India, 17–18 September 2018

A wellhead used to study the tectonics and fluid flow in the submarine Nankai Trough
Posted inResearch Spotlights

In a Submarine Trough, Permeable Rocks May Lead to Quakes

Sarah Stanley, Science Writer by Sarah Stanley 29 November 20185 October 2022

In Japan’s submarine Nankai Trough, rock permeability is much higher when measured at larger scales, likely because of big fractures and faults that are not captured at small scales.

The flat Australian outback overlies a series of ancient mountain chains.
Posted inResearch Spotlights

Unraveling the Origins of Australia’s Ancient Mountain Chains

by Terri Cook 5 November 201813 October 2022

New data synthesis suggests that varying rates of trench retreat along the margin of the Gondwana supercontinent were responsible for the curvature of the Tasmanide mountain chains.

Ocean drilling cores offer insight into subduction zone behavior and how it might generate earthquakes and tsunamis
Posted inScience Updates

At-Sea Workshop Advances Subduction Zone Research

by C. Regalla, G. Lymer and R. Fukuchi 30 July 201818 October 2022

International Ocean Discovery Program Core-Log-Seismic integration at Sea (CLSI@Sea) workshop; Nankai Trough, Philippine Sea, off the coast of southwest Japan, January–February 2018

Researchers combine diverse data sets to analyze earthquake recurrence intervals in central Washington State.
Posted inResearch Spotlights

Constraining Central Washington’s Potential Seismic Hazard

by Terri Cook 19 June 20183 July 2023

Fault geometry and slip rate analyses show deformation in the Yakima Fold Province accelerated in the Pleistocene and has remained elevated, offering new insights into earthquake recurrence intervals.

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