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For information on how to run the code see the readme: https://github.com/ucgmsim/Empirical_Engine/blob/master/README.md

Conceptual Model

Models

Model NameYearShorthandIMs CalculatedTechtonicType
CampellBorzorgina2012CB_12CAV, AIACTIVE_SHALLOW
Bradley

2013

BR_13PGA, PGV, pSAACTIVE_SHALLOW, VOLCANIC, OTHER_CRUSTAL_FAULTING
AfshariStewart2016AS_16Ds575, Ds595, Ds2080ACTIVE_SHALLOW
Zhao2006ZA_06pSA, PGA (T=0) (PGV – not implemented in matlab)SUBDUCTION_INTERFACE, INTERFACE_FAULTING

 

Site Parameters Needed

ParameterDescriptionBR_13AS_16CB_12ZA_06
RrupSource-to-site distance (km) (Rrup distance)✓✓ ✓✓
Rjb ✓ ✓ 
Rx

distance measured perpendicular to fault strike from surface projection of updip edge of the fault rupture (+ve in downdip dir) (km)

✓   
Rtvz

source-to-site distance in the Taupo volcanic zone (TVZ) in km

✓   
Vs30 ✓✓✓ 
Vs30measuredIf the vs30 measurement is taken from a ____ True otherwise False✓   
siteclass

determined from vs30

'hardrock';'rock';'hardsoil';'mediumsoil';'softsoil' (also called siteType)

  • %Hardrock 'hardrock'                      1100                   A

  • %SCI          'rock' T=0.2s                600                 A , B

  • %SCII     'hardsoil' 0.2<T<0.4s        300<V30<600               C

  • %SCIII  'mediumsoil' 0.4<T<0.6s        200<V30<300               D

  • %SCIV     'softsoil' T<0.6s              V30<200               E , F

✓  ✓
Z1p0Can be estimated from vs30✓✓  
Z2p5Can be estimated from vs30✓ ✓ 
      

Fault Parameters Needed

ParameterDescriptionBR_13AS_16CB_12ZA_06
MwMoment magnitude✓✓✓✓

rake

rake angle✓ ✓ 
dipdip angle✓ ✓ 
ztor
  • minimum dtop for finite faults from the srfinfo file
  • Or hdepth for point sources
✓ ✓ 
rupture_type

(reverse, normal, strikeslip, oblique, unknown)

This is currently estimated by

Reverse <- 45 < rake < 135;

Normal <- -135 < rake < -45;

StrikeSlip <- 0 < abs(rake) < 45, 135 < abs(rake) < 180,

 ✓ ✓
tect_type(active_shallow, volcanic, subduction_interface, subduction_slab)   ✓
hdepthfocal depth (km) (hypocentral depth)   ✓

Folder Structure

TBD

File Structure

IM_file

 

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