Srijan Das *23 and Seismology Group gather for a Celebratory Luncheon
Oct. 10, 2023
Written by Georgette Chalker, The Department of Geosciences

Mostly Geosciences' seismologists gathered for a celebratory luncheon last Thursday on October 5, 2023 to honor Srijan Das' Ph.D. His adviser Professor Jeroen Tromp suggested that the group gather for lunch to celebrate, since he was away last semester during Das' defense on May 22, 2023. Srijan will…

Imaging technique awarded Innovation Fund for New Industrial Collaborations
Oct. 3, 2022

A new project has been awarded the Dean for Research Innovation Fund for New Industrial Collaborations: Diamond identification using tomographic ultrasound. Jeroen Tromp, the Blair Professor of Geology, will explore the use of ultrasonic imaging techniques to…

Video: Imaging the Earth’s Interior with the Summit Supercomputer
Oct. 13, 2020
Written by inside HPC
In this video, Jeroen Tromp from Princeton University describes how GPUs power 3D wave simulations that help researchers better understand the earth’s interior.
Summit Early Science Video Series: Imaging the Earth's Interior
March 29, 2019
Written by NVIDIA
(Video) The Department of Geosciences at Princeton University is using Summit, powered by NVIDIA Volta GPUs, to observe and simulate seismic data, imaging the Earth's interior on a global scale.
Summit Supercomputer Clears Path To Seismic Discoveries on 3D Scale
March 19, 2019
Written by The Next Platform
“The goal is to image the earth’s interior on a 3D scale,” says Jeroen Tromp, Blair Professor of Geology at Princeton University, leader of a team carrying out seismic research at the Oak Ridge Oak Ridge National Laboratory (ORNL) in Tennessee.
Princeton students take a deep dive into deep learning computing
Oct. 26, 2018
Written by Melissa Moss, Office of Communications

Princeton graduate students, postdocs and undergrads explore the most widely used deep learning techniques for computer vision tasks and delved into using new parallel computing programs to dramatically speed up applications.

Quote: “We see a progressive approach to science with a uniquely high number of homegrown applications, such…

Medical imaging using methods from geosciences
Sept. 22, 2017
Written by Princeton Research Computing
Jeroen Tromp, the Blair Professor of Geology and professor of geosciences and applied and computational mathematics This new technology transforms traditional ultrasound images into three-dimensional images that could improve the diagnosis of tumors, osteoporosis and other disorders. It combines recent advances in computational power with techniques originally developed for the study of earthquakes and subterranean structures.
A Seismic Mapping Milestone
March 28, 2017
Written by Jonathan Hines, Oaks Ridge National Laboratory

Using advanced modeling and simulation, seismic data generated by earthquakes, and one of the world’s fastest supercomputers, a team led by Jeroen Tromp of Princeton University is creating a detailed 3-D picture of Earth’s interior.

Schmidt Fund awards go to projects with transformative potential
Feb. 21, 2017
Written by Catherine Zandonella, Office of the Dean for Research
Three projects with the potential for broad impacts in science and technology have been selected to receive support from the Eric and Wendy Schmidt Transformative Technology Fund.
Share Your Science: Mapping the Earth’s Interior with GPUs
March 21, 2016
Written by Nvidia Developer
Jeroen Tromp, Professor at Princeton University shares how his team is using the Tesla GPU-accelerated Titan Supercomputer at Oak Ridge National Laboratory to image the earth’s interior on a global scale. Tromp and his team are simulating seismic wave propagation by analyzing hundreds of earthquakes recorded by thousands of stations across the world to create 3D global tomographic maps.
Earthquakes Reveal Deep Secrets Beneath East Asia With Supercomputing (Includes Podcast)
May 13, 2015
Written by Jorge Salazar, Texas Advanced Computing Center
XSEDE Campus Champions, Stampede and Lonestar4 supercomputers of TACC help create 3D images deep underground. (Includes podcast)
Frontier beneath our feet: Seismic study aims to map Earth’s interior in 3-D
March 12, 2015
Written by Catherine Zandonella, Office of the Dean for Research
When a 7.9-magnitude earthquake struck central China’s Sichuan province in 2008, seismic waves rippled through the region, toppling apartment houses in the city of Chengdu and swaying office buildings 1,000 miles away in Shanghai.
Seismic Visions: What does Middle Earth look like?
Feb. 25, 2015
Written by Catherine Clabby, American Scientist
(Video) In this view of the mantle below the Pacific, warm colors denote slower than average seismic wavespeeds. Cold colors denote faster than average seismic wavespeeds associated with subduction zones.  Image courtesy of Ebru Bozdag, University of Nice, and David Pugmire, Oak Ridge National Laboratory. The ground beneath our feet seems still, yet, this is an illusion. Abundant seismic data, new mathematical analyses, and powerful supercomputers are yielding a detailed look beneath the ground, into Earth’s mantle. Earth’s tectonic plates migrate across the surface at an average rate of 2 to 4 centimeters a year. Having a visual image adds an entire new dimension to seismic understanding.
Magnitude 9 Tohoku Earthquake Audio and Video Simulation
Feb. 17, 2015
Written by Seismicsoundlab
(Video) The visual imagery in this video simulates seismic wave propagation using CIG’s SPECFEM3D_GLOBE software.  Sound effects were added by Seismicsoundlab.  As the name implies, the lab is a unique collaboration between seismic, audio, and computer scientists working together to produce a series of videos for the Hayden Planetarium, American Museum of Natural History, NYC.  What you see are the body (interior) and surface (crustal) waves of the 2011 Tohoku earthquake in Japan.  The waves represent two hours worth of data.  The sound comes from broadband seismometers (eight in a great circle mixed to stereo).  The video is produced by Ben Holtzman, Jason Candler, and Matt Turk.  Simulated and rendered by Matt Turk using “yt”, and produced by group collaborator Daniel Peter using SPECFEM3D_GLOBE.
Theoretical & Computational Seismology attend CIG/QUEST/IRIS Joint Workshop in Fairbanks, Alaska
Sept. 24, 2013
Written by The Department of Geosciences
Jeroen Tromp, Ebru Bozdag, James Smith, Wenjie Lei, and Shravan Hanasoge attended the CIG/QUEST/IRIS joint workshop on seismic imaging of structure and source from the 14th to 17th of July in Fairbanks, Alaska.
COLLOQUIUM: "Seismic Imaging and Inversion Based on Spectral-Element and Adjoint Methods"
Feb. 4, 2013
Written by Princeton Plasma Physics Laboratory (PPPL)
Harnessing high-performance computers and accurate numerical methods to better constrain physical properties of Earth's interior is rapidly becoming one of the most important research topics in exploration and global seismology. We use spectral-element and adjoint methods to iteratively improve 3D subsurface images ranging from exploration to global scales. The spectral-element method, a high-order finite-element method with the advantage of a diagonal mass matrix, is used to accurately calculate three-component synthetic seismograms in complex 3D Earth models.
Princeton researchers working at forefront of 'exascale' supercomputing
June 28, 2012
Written by Gale Scott
Scientists at Princeton University are composing the complex codes designed to instruct a new class of powerful computers that will allow researchers to tackle problems that were previously too difficult to solve. These supercomputers, operating at a speed called the “exascale,” will produce realistic simulations of dazzlingly complex phenomena in nature such as fusion reactions, earthquakes and climate change.
Black hole, star collisions may illuminate universe’s dark side
Sept. 19, 2011
Written by Morgan Kelly, Office of Communications
Postdoctoral researchers Shravan Hanasoge of Princeton's Department of Geosciencesand Michael Kesden of NYU's Center for Cosmology and Particle Physics simulated the visible result of a primordial black hole passing through a star. Theoretical remnants of the Big Bang, primordial black holes possess the properties of dark matter and are one of various cosmic objects thought to be the source of the mysterious substance, but they have yet to be observed