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subduction

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.

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.

Researchers use computer modeling to uncover a new mechanism behind fluid flow in Earth’s crust
Posted inResearch Spotlights

Scientists Simulate New Mechanism of Fluid Flow in Earth’s Crust

Sarah Stanley, Science Writer by Sarah Stanley 1 November 20175 May 2022

Three-dimensional high-performance computer modeling reveals the behavior of fluid transport waves generated by chemical reactions that take place during metamorphism.

Researchers look at environmental conditions in the Cascadia subduction zone to better understand earthquake hazards
Posted inResearch Spotlights

Revising an Innovative Way to Study Cascadia Megaquakes

by S. Witman 12 September 201710 March 2022

Researchers probe natural environments near subduction zones to decrypt underlying mechanisms of major earthquakes.

Deformed and metamorphosed rocks may be left over from subduction processes during the growth of the Himalaya
Posted inResearch Spotlights

Unraveling the History of the India-Asia Collision

by Terri Cook 15 May 201713 April 2022

A study of deformed and metamorphosed rocks exposed in Tibet’s Lopu Range suggests that episodes of crustal shortening and extension during the evolution of the Himalaya are related to subduction processes.

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