Working Meeting: Path and Source Issues, Oct. 16 2012

Purpose of the meeting
To provide an update on the recent progress on regionalization and path/source issues for NGA-East (tasks C and D from the project plan). Results will be presented by members of the Path/Source Working Group and by other contributors performing work on some of NGA-East’s critical issues topics. The meeting schedule was designed to allow plenty of time for and to stimulate scientific discussions amongst the participants. The format and interactions are more flexible than for official SSHAC Workshops.

October 16, 2012
Download the final agenda (updated 10/15/2012)

View the video of the Oct. 16 morning session on YouTube – before lunch

View the video of the Oct. 16 afternoon session on YouTube – after lunch

8:30-8:35 Welcoming remarks (Y. Bozorgnia)
8:35-8:50 Purpose of the meeting, place of path and source issues in the NGA-­‐East project scope (C. Goulet, N. Abrahamson)
8:50-9:20 Regionalization: database of crustal properties, preliminary 1D crustal regionalization and effects on ground motions (W. Mooney)
9:20-10:05 Evaluation of regional path/source effects from recent earthquake recordings, focus on Central U.S. and Gulf Coast (M. Chapman, S. Pezeshk)
10:05-10:30 Discussion
10:30-10:45 Break
10:45-11:05 Calibration of a 1D Velocity and Q Model for Ground Motion Simulations (Mineral and Mt Carmel events) (R. Graves)
11:05-11:25 Special study on geometrical spreading from Mineral aftershock data (M. Chapman)
11:25-11:45 Initial analysis of coda-­‐normalized S-­‐wave amplitudes from the Riviere du Loup earthquake to determine geometrical spreading (A. Frankel)
11:45-12:10 Discussion
12:10-­13:10 Lunch
13:10-13:30 Evaluation of attenuation from recent earthquake recordings, updated models (N-­‐E US and Canada) (G. Atkinson, D. Boore)
13:30-13:50 Evaluation of attenuation from recent earthquake recordings, updated models (N-­‐E US and Canada) (J. Boatwright)
13:50-14:20 Discussion
14:20-14:40 Regionalization, stress drop and depth and the issue of spectral shape in CENA (N-­‐E US and Canada) (J. Boatwright)
14:40-15:00 Recent work on spectral shape in CENA: Empirical Green’s functions and source effects (D. Boore, G. Atkinson)
15:00-15:30 Discussion
15:30-15:45 Break
15:45-16:05 Summary of the day (N. Abrahamson, C. Goulet)
16:05-17:00 Discussion – remaining critical issues and the next steps forward

The venue (in-person attendance)
The meeting will be hosted at the Berkeley International House, on the UC Berkeley campus (see IHouse website for directions). There is no hotel room block for this event, however, nearby hotels include the Durant Hotel (short walking distance) and the Hotel Shattuck Plaza. Other facilities can be found online.

Remote login (access to meeting via internet and phone)
Participants who registered for remote attendance will receive the web and phone information via e-mail the week before the event.

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