HighF v14.12

High-F 14.12 Verification and Validation Exercise

This page collects information about a proposed high frequency verification and validation exercise. Planning started in Dec 2014.

Agreements Needed

• Simulation Volumes
• Rotation Angle
• Projections used
• Points per wavelength used
• Number and location of sites used for ground motion comparison
• Proposed Station List to save results
• La Habra Point Source parameters
• Currently available code capabilities in GPU codes
  • small scale heterogeneities
  • FDQ
  • Plasticity
  • dynamic rupture source
• V and V exercise stages - need to be reviiewed and approved

Station Lists

• Hercules La Habra Stations
• En-Jui Station List
• La Habra Station List En-Jui's La Habra Station List

Source Description

• Time domain Plot of Select Source
• Data File For 5Hz Plot

Volume

The four corners are:

• -119.288842 34.120549
• -118.354016 35.061096
• -116.846030 34.025873
• -117.780976 33.096503

Volume size:

• 180,000 m x 135,000 m x 61,875 m = 1.503e15 m3

Simulation Box / Velocity Model

Parameter	Value	Notes
Dimensions (km)	180 x 135 x 61.875 (31 km for 1d Model)
Bounding Box (LL)	-119.288842 34.120549, -118.354016 35.061096, -116.846030 34.025873, -117.780976 33.096503
Rotation Angle	39.9
UCVM Version	14.3.0	No heterogeneities
Velocity Model Versions	CVM-S4v26
Miniumum Vs	500 m/s
Samples per wavelength	6 to 7 - AWP	10 to 12 - Hercules

Point Source Parameters

Parameter	Value	Notes
Event Name	La Habra
Mw	5.1	Ref: http://www.scsn.org/2014lahabra.html
Origin Time	2014/03/29 04:09:42.97	Source: En-Jui
Origin Location	-117.930; 33.922; 5.0km	Source: En-Jui
Strike/Dip/Rake 1	134/55/155	Source: En-Jui, initial
Strike/Dip/Rake 2	239/70/38	Source: En-Jui, based on review of aftershock sequence
Rise Time	0.75 s

Solver Parameters

Parameter	Value	Notes
Frequency	4.0 Hz
Simulation Length (Duration)	100 s
Delta T	0.005
Plane Output Resolution	250m
I/O Print Rate	every 10 steps
Station List	TBD
Software Version	TBD

Fig 1:Location of La Habra Main Shock and aftershocks, used to select preferred fault plane solution. (Image Credit: En-Jui Lee)

High-F VandV Exercise Planning Documents (2015)

• High-F V and V Exercise Description - Jan 2015 (pptx)

High-F Project Plan (2012)

• Original High-F Project Plan (pdf)
• Original High-F Project Plan (docx)

References Used

• Taborda, R. and J. Bielak (2013). Ground-motion simulation and validation of the 2008 Chino Hills, California, earthquake, Bull. Seismol. Soc. Am. 103, no. 1, 131–156, doi 10.1785/0120110325.

Related Entries

• High-F Project
• CME Project
• AWP-ODC
• Hercules