Thread: 2022 SSA Session: "Investigating Nonlinear Source and Near-source Dynamics from Earthquake and Explosive Sources”

Started: 2022-01-03 11:52:37
Last activity: 2022-01-03 11:52:37
Topics: SSA Meetings
Dear Colleagues,

We would like to draw your attention to the session *"Investigating
Nonlinear Source and Near-source Dynamics from Earthquake and Explosive
Sources"* at the 2022 SSA meeting. This year the SSA meeting will be held
in Bellevue, Washington, during the dates of April 19-23, 2022. See
meeting and session info below.

*Meeting abstract deadline:* January 12 2022 5 p.m. Pacific.
*Technical sessions link:*
*Abstract submission link:*

*Title:* Investigating Nonlinear Source and Near-source Dynamics from
Earthquake and Explosive Sources

*Conveners:* Marlon D. Ramos, Air Force Research Laboratory (
ramosmd<at>; Kenny Ryan, Air Force Research Laboratory (
0k.ryan0<at>; Carene Larmat, Los Alamos National Laboratory (
carene<at>; Zhou Lei, Los Alamos National Laboratory (zlei<at>;
Chandan K. Saikia, Air Force Technical Applications Center (
chandan.saikia<at>; Jeffry L. Stevens, Leidos (

*Description:* Earthquakes and explosive sources can produce complex
wavefields and fracture patterns via nonlinear properties and initial
conditions (geometry and material). Additionally, near-source properties
such as the pre-stress regime, material strength, frictional processes,
anisotropy, topography, and other heterogeneities can add to that
complexity in nonlinear and unintuitive ways. Such properties can affect
the nonlinear deformation during an event, impacting the resultant ground
motion, plastic deformation, fracture distribution, spall, and the
generation of seismic waves seen beyond the nonlinear volume. Determining
the cause-and-effect relationships between earthquake and explosion source
media properties and observations is an area of active and challenging
research. This session is intended to highlight recent advances in our
understanding of nonlinear dynamics for fault and explosive sources. We
are open to a wide range of studies related to numerical, experimental, and
observational findings that may include heterogeneities in source
geometry, pre-stress regime, topography, and material properties.
Numerical models that feature algorithms (single or coupled) to robustly
model nonlinear time-dependent source properties (e.g., frictional
processes, high frequency waves, initial pressure pulses, and fracturing)
and their effects are especially welcome. We also encourage contributions
from research topics that explore impact, volcanic, nuclear, and chemical
explosive sources.

*Corresponding Convener:* Kenny Ryan, Air Force Research Laboratory

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