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SCEC SoSAFE Workshop: Recent Successes and Future Challenges

Applications Due: August 8, 2016
Participants: 40 maximum, emphasizing early career scientists and people involved in SoSAFE research.

Date: September 10, 2016
Time: 9:00am-5:00pm
Location: Hilton Palm Springs Resort

SCEC Award: 16192


Related Research:

CONVENERS: Kate Scharer and Ramon Arrowsmith

OVERVIEW: The central goal of the SoSAFE (Southern San Andreas Fault Evaluation) project was to increase knowledge of the occurrence and size of earthquakes along the southern San Andreas Fault (SAF) and San Jacinto Fault (SJF) over the last 2000 years. When SoSAFE began ca. 2006, only two published paleoseismic records, Wrightwood and Pallett Creek, extended greater than 1000 years. Since the beginning of SCEC4 five years ago, many paleoseismic investigations have been initiated and/or published by SoSAFE investigators, greatly increasing the number of sites with long records and estimates of paleoslip. With more data have come greater interpretive challenges and a view of more variable recurrence along these major faults of Southern California.  

The purpose of this workshop is: (1) to communicate the latest methods and data that have improved our knowledge and (2) to investigate new approaches and enhance collaborations needed to advance paleoseismic investigations on the SAF/SJF system. The workshop will be structured with a set of morning presentations focused on variations in the signature of slip on the plate boundary system.  The afternoon will be split into two sessions, the first will explore how paleoenvironmental data can be used to leverage paleoseismic sequences, and the second will work to improve coordination between paleoseismic data and modeling approaches such as the Collaboratory for Interseismic Simulation and Modeling (CISM).

Presentation slides may be downloaded by clicking the title of the presentation. PLEASE NOTE: Files are the author’s property. They may contain unpublished or preliminary information and should only be used while viewing the talk.

SEPTEMBER 10, 2016

08:00-09:00 Continental Breakfast & Check-In  
09:00 - 09:15 Introductions  
  Earthquake Recurrence and Slip Over Short and Long Term: How Does It All Add Up?
  Creep and other earthquake cycle challenges from recent observations  
09:15 - 09:30 The Dry Lake Valley site: Observations of structures formed by modern and prehistoric creep on the central San Andreas fault (PDF, 15.2MB) Nate Toke
09:30 - 09:45 South Napa 2013 trenches: creep, afterslip, missed events! (PDF, 8.2MB) Tim Dawson
09:45 - 10:00 Creep on the Imperial Fault and new faults in the Salton Trough (PDF, 92.7MB) Eric Lindsey
10:00 - 10:15 Near field and off fault deformation revealed using optical image correlation Chris Milliner
10:15 - 10:30 Break  
  Adding up slip: Segment boundaries and slip rate variations  
10:30 - 10:45 Slip rates and distributed deformation in and around San Gorgonio Pass (PDF, 26.0MB) Michele Cooke
10:45 - 11:00 Earthquake displacements and timing of events at Quincy and Mystic Lake, SJF Nate Onderdonk
11:00 - 11:15 Investigating the age and origin of small offsets at Van Matre Ranch along the San Andreas Fault in the Carrizo Plain, California (PDF, 90.8MB) Barrett Salisbury
11:15 - 11:45 Discussion
  • What does slip rate variability mean for fault and crustal rheologies?
  • Why aren't paleoseismic/geologic data used as constraints on this?
  • Proposal and project ideas
12:00 - 13:00 Lunch  
  Integrating Earthquake and Paleoclimate/Paleoenvironmental Chronologies on the SoSAFE System
13:00 - 13:15 A lake-based event chronology for the Southern San Andreas and San Jacinto Faults (PDF, 26.0MB) Tom Rockwell
13:15 - 13:30 Sediment accumulation curves discriminate between proximal event records on the southern San Andreas Fault (PDF, 6.2MB) Kate Scharer
13:30 - 14:00 Holocene droughts, fires, floods and pluvials in southwestern California (PDF, 9.3MB) Matt Kirby
14:00 - 14:30 On the PAGES2k project, paleoclimate cyberinfrastructure and integrating paleoclimatology and paleoseismology (PDF, 20.7MB) Nick McKay
14:30 - 15:00 Discussion
  • Where does SoSAFE go to advance this research?
15:00 - 15:15 Break  
  Outside Looking In: Broad Applications of Behavior of High Slip Rate Faults
15:15 - 15:30 So many earthquakes, so little time: An examination of SAF-system earthquake recurrence
(PDF, 6.1MB)
Glenn Biasi
15:30 - 16:00 RSQSim for paleoseismologists; what’s under the hood and SoCal results (PDF, 7.2MB) Jacqui Gilchrist
16:00 - 16:15 Data integration and visualization tools for bringing paleoseismic data and simulator results together (PDF, 3.1MB) Kevin Milner
16:15 - 16:45 Discussion and Wrap Up  
  Earthquake geology data and metadata needs  
  Paleoseismology in the Collaboratory for Interseismic Simulation and Modeling (CISM)  
  Simulator opportunities  
  Adieu to SoSAFE!  
16:45 Adjourn  



Sinan Akciz (CSU Fullerton)
Ramon Arrowsmith (Arizona State University)
Richard Bennett (U of Arizona)
Glenn Biasi (UNR)
Kimberly Blisniuk (SJSU)
Michele Cooke (U of Massachusetts)
Timothy Dawson (CGS)
James Dieterich (UC Riverside)
Jacquelyn Gilchrist (USC)
Lisa Grant Ludwig (UC Irvine)
Alexandra Hatem (USC)
Janis Hernandez (CGS)
Susanne Janecke (Utah State Univ)
Katherine Kendrick (USGS)
Matthew Kirby (CSUF)
Robert Leeper (UC Riverside)
Eric Lindsey (Earth Obs. of Singapore)
Jing Liu (CEA)
Julian Lozos (CSUN)
Eui-jo Marquez (SDSU)
Sally McGill (CSUSB)
Nicholas McKay (Northern Arizona U)
Chris Milliner (UC Berkeley)
Kevin Milner (SCEC/USC)
Koji Okumura (Hiroshima Univ)
Nate Onderdonk (CSU Long Beach)
Michael Oskin (UC Davis)
Paul Peshette (CSU Northridge)
James Salisbury (ASU)
Katherine Scharer (USGS)
Gordon Seitz (CGS Menlo Park)
Warren Sharp (BGC)
Kathleen Springer (USGS)
Nathan Toke (Utah Valley University)
Adam Wade (ASU)
Maximilian Werner (Bristol Univ)
Alana Williams (ASU)
Patrick Williams (Williams Associates)
Doug Yule (CSUN)
Olaf Zielke (KAUST)
Robert Zinke (USC)

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