Séminaire ISTerre

Improved Earthquake Monitoring with AI

mardi 8 février 2022 - 11h00
Greg Beroza - Stanford University
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There is a well-established workflow for earthquake monitoring that includes a sequence of steps that include phase detection, phase association, location, and characterization that is used to develop seismicity catalogs around the world and across scales. Because the number of earthquakes is universally observed to increase rapidly as magnitude decreases, cataloging smaller earthquakes will dramatically increase the information available to study earthquake processes. In the past decade, the methods of AI – initially data mining, and more recently machine learning – have been applied to seismic monitoring to great effect.  Appropriate architectures, accurate data labels, and data augmentation all play important roles in developing effective models that generalize well. The simplest approach is modular in which individual earthquake monitoring tasks are replaced one-by-one with neural network models that are applied in serial.  There should be advantages, however, in combining steps in multi-task models, with an end-to-end model as an extreme end member, to take advantage of contextual information.  AI-based earthquake monitoring is now being deployed for real-time monitoring, and there is no reason for it not to be applied comprehensively to available archived data.  Seismologists are now developing catalogs for both natural and induced seismicity that are far more comprehensive than before that often feature an order of magnitude more small earthquakes.  The next challenge will be to use this clearer view of  seismicity to understand better the mechanics of earthquake processes.  The methods of AI should also be useful for this effort.

Equipe organisatrice : Ondes et structures

Séminaire uniquement en visio

Informations de visio :

https://univ-grenoble-alpes-fr.zoom.us/j/96913102209?pwd=aCthMFNEV0lmRGxqd3h5K3p5QWpHZz09 

“Minimalist seismology”: studying earthquakes with sparse instrumentation

jeudi 17 septembre 2026 - 11h00

Mathieu Causse - ISTerre

Equipe organisatrice : Organisation labo

Amphithéâtre Killian, Maison des Géosciences, 38400 Saint Martin d'Hères

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Stable‑to‑dynamic expansion of fault slipping area through fluid injection observed in laboratory experiments using a sub‑meter scale specimen

vendredi 18 septembre 2026 - 14h00

Takatoshi Ito  - Université de Tohoku, Japan

Equipe organisatrice : Mécanique des failles

Amphithéâtre Killian, Maison des Géosciences, 38400 Saint Martin d'Hères

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Tectonics, Mantle Dynamics and Coupled Lithosphere-Mantle-Core Evolution of Earth and Other Rocky Worlds

jeudi 24 septembre 2026 - 11h00

Paul Tackley - ETH Zurich

Equipe organisatrice : Grands Séminaires ISTerre

Amphithéâtre Killian, Maison des Géosciences, 38400 Saint Martin d'Hères

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Tectonics, Mantle Dynamics and Coupled Lithosphere-Mantle-Core Evolution of Earth and Other Rocky Worlds

jeudi 24 septembre 2026 - 11h00

Paul Tackley - ETH Zurich

Equipe organisatrice : Grands Séminaires ISTerre

Amphithéâtre Killian, Maison des Géosciences, 38400 Saint Martin d'Hères

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Apport des expériences analogiques pour la modélisation et le suivi en temps réel de la propagation du magma en profondeur : Exemple du Rift Est Africain

jeudi 1er octobre 2026 - 11h00

Virginie Pinel - ISTerre

Equipe organisatrice : Organisation labo

Amphithéâtre Killian, Maison des Géosciences, 38400 Saint Martin d'Hères

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A t-on encore besoin de plaques pour expliquer la tectonique de la vallée du Rhône et des Alpes Occidentales ?

vendredi 2 octobre 2026 - 11h00

philippe VERNANT - Geosciences Montpellier

Equipe organisatrice : Tectonique active et sismicité

Salle Dolomieu, Maison des Géosciences, 38400 Saint Martin d'Hères

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TBA

vendredi 2 octobre 2026 - 14h00

Hugo Boulze - 

Equipe organisatrice : Cycle sismique et déformations transitoires

Amphithéâtre Killian, Maison des Géosciences, 38400 Saint Martin d'Hères

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TBA

vendredi 9 octobre 2026 - 11h00

Eric Beaucé - ISTerre

Equipe organisatrice : Cycle sismique et déformations transitoires

Salle Dolomieu, Maison des Géosciences, 38400 Saint Martin d'Hères

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TBA

vendredi 20 novembre 2026 - 11h00

Farzaneh Mohammadi - ENS Paris

Equipe organisatrice : Cycle sismique et déformations transitoires

Amphithéâtre Killian, Maison des Géosciences, 38400 Saint Martin d'Hères

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