2025 SCEC Dynamic Rupture Workshop

better understanding how fault-friction works, based on inferences from the lab and inferences from the field

Date: December 2, 2025
Location: Online via Zoom
Workshop Organizers: Ruth Harris (USGS), Michael Barall (USGS)
SCEC Award: 25347

Overview

Dynamic rupture simulations are useful tools to help us better understand how earthquakes work and how they generate ground motions. Nowadays dynamic earthquake rupture codes are used by dozens of researchers around the world to increase our knowledge about earthquakes which occurred in the past, and to create scenarios of earthquakes of the future. Dynamic rupture simulations are the sister computations of their more commonly used counterparts, kinematic rupture simulations, but dynamic rupture simulations are more complex and need more assumptions about rock properties and the physics of faulting. Included in these assumptions is fault-friction behavior. In our group’s workshops in the early-2020’s, we learned about each of the four ingredients for dynamic rupture simulations, including a January 2020 fault-friction workshop, but it is clear that we still have much to learn, and in the past 4-5 years there have been even more developments about this topic. In our 2025 workshop we plan to return to the fault-friction theme, to learn about the state of the science and how we should implement it in our simulations.

We welcome individuals involved in dynamic rupture simulations of earthquakes, and from anyone working on coseismic fault friction concepts based on field, laboratory and computational rock mechanics. We especially encourage participation from students, postdocs, and other early career scientists.

December 2, 2025

All times are Pacific Standard Time (UTC-8). 

Presentation materials may be viewed by clicking the links below. PLEASE NOTE: Files are the author’s property. They may contain unpublished or preliminary information and should only be used for reviewing the talk. Only the presentations for which SCEC has received permission to post publicly are included below.

TimeDescriptionPresenter
09:00 - 09:20Introduction (PDF)Ruth Harris
09:25 - 10:00Coseismic fault friction: Recent observations from laboratory experiments and links to natural faults (PDF)Monica Barbery
10:05 - 10:20Earth materials in motion: CRM workshop highlights and new results on the influence of mineralogy and fabric on fault slipAlexis Ault
10:25 - 10:40Laboratory Stress Drop and Fault Slip: Near-field stress measurements from a laser internal load cell (PDF)Eric Burdette
10:45 - 11:00Lightning Talks on New Science Ideas (videos) 1-slide, 100-seconds (videos)
11:05 - 11:20Break
11:25 - 11:40Fault healing and asperity partitioning on a frictionally heterogeneous laboratory fault (PDF)Jun Young Song
11:45 - 12:00Simulations of Thermal Pressurization on Rough Faults: Rupture Dynamics and Temperature Evolution (PDF)Yuval Tal
12:05 - 12:20Fault pseudotachylytes: recent advances and open questions (PDF)Eric Ferre
12:25 - 13:00Break
13:05 - 13:20Transient Strain and Electrical Conductivity due to Fault Formation in Laboratory StepoversSara Beth Cebry
13:25 - 13:40Evolution of fault strength in granite under hydrothermal conditionsTamara Jeppson
13:45 - 14:00Group DiscussionAll
14:05 - 14:20Lightning Talks on New Science Ideas (videos) 1-slide, 100-seconds (videos)
14:20 - 14:40Break
Updates from CRESCENT and from SEAS and Stress Drop Validation
14:40 - 14:553D fully coupled earthquake dynamic rupture and tsunami benchmarks with varying bathymetric complexity (PDF)Fabian Kutschera
15:00 - 15:07SEAS TAG (VIDEO)TAG leader - Valere Lambert
15:12 - 15:19Stress Drop TAG (PDF)TAG leader - Rachel Abercrombie/Annemarie Baltay
15:24 - 16:00Group Discussion: Planning Our Next StepsAll

SCEC-USGS Dynamic Rupture Verification Group

This SCEC-USGS group is an international collaboration that focuses on verifying computer codes used to simulate earthquakes as spontaneous dynamic ruptures. While the ultimate goal is model validation, we are currently using benchmarks to test for consistency of results under the same assumptions.

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Participants

First NameLast NameOrganization
AakashGuptaUAF
AbdullahImranUT El Paso
AlejandroAguilarUSU
AlexDiMonteUSU
AlexisAultUSU
AliceGabrielUCSD
AmyLuMcGill
AnnemarieBaltayUSGS
ArushiSaxenaUC Davis
AwaisButtNUST
AyomiposiFaladeCERI
BadieRowshandelCEA
BaoningWuUCSD
BenchunDuanTAMU
BetsyMaddenSJSU
BinhaoWangUSC
BradAagaardUSGS
BrittanyBotellU Memphis
BrittanyEricksonU Oregon
CaiyuanFanENS Paris
CarloAndrenacciU "G. d'Annunzio"
ChiaraCornelioINGV
ChristipherMengesUSGS
ChristosKyriakopoulosCERI
ChukwuebukaNwekeUSC
ClaraYoonUSGS
ClaudiaAbrilLMU
DavidKammerETH Zurich
DiliniWalakulu ArachchigeSIU
DimitriTrifunacStanford
EdricPaukUSC/SCEC
ElizabethHearnUSGS
EmVogelU Michigan
EmmaArmstrongUSU
EricBurdetteUSGS
EricFerreNMSU
EvanHirakawaUSGS
EvanMarschallUCSD Scripps
FabianKutscheraUCSD
FahrettinKuranIUSS Pavia
FolarinKolawoleColumbia U
FrancescoMosconiSapienza University
FrantišekGallovičCharles University
GabrielleHobsonUCSD
GuadalupeBravoUC Riverside
HastiBordbarTAMU
JarodDomengeUNIMIB
JeremyWongUCSD
JulianLozosCSUN
Jun YoungSongCornell
JunleJiangU Oklahoma
KarenLuttrellLSU
KimOlsenSDSU
KwabenaPoku-AgyemangUSU
KyleWithersUSGS
LavJoshiCharles University
LeslieGarciaUSU
LilibethContrerasUNAM
LinZhangCUP
LorraineHwangUC Davis
Lubica ValentovaK.Charles U
MartinHronekCharles U
MeritxellColetColumbia
MichaelBarallUSGS
MingqiLiuTAMU
MohamedTalaatSimpson Gumpertz & Heger Inc.
MonicaBarberyBrown/U of Utah
NickbeelerUSGS
PengZhaiUMich
PierreRomanetGeoazur
PriyankaMishraIITR
RachelAbercrombieBoston U
Rachel PrecaTrapaniLMU Munich
RuthHarrisUSGS
SajanK CUSC
Sara BethCebryUSGS
SeongJuJeongOU
SGTLamontLDEO
ShuoMaSDSU
SoleneAntoineCaltech
SrisharanShreedharanUSU
SuliYaoENS Paris
TamaraJeppsonUSGS
WeiFengGFZ
WenqiangZhangStanford
XiaofengChenOK State
YajingLiuMcGill U
YukoKaseGSJ
YutoSasakiUniversity of Osaka
YuvalTalBGU
ZainabAsaadIUSS/Pavia/Italy
ZeyuLuUSTC
ZhiweiWangCNRS
ZizhuangTangTAMU

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The Statewide California Earthquake Center (SCEC) fosters a diverse and inclusive community where everyone feels safe, productive, and welcome. We expect all participants in SCEC-supported events to uphold this commitment by adhering to the SCEC Activities Code of Conduct.

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