Hybrid broadband simulation methods typically compute high-frequency portion of ground-motions using a simplified-physics approach (commonly known as “stochastic method”) using the same 1D velocity profile, anelastic attenuation profile and site-attenuation (κ0) value for all sites. However, these parameters relating to Earth structure are known to vary spatially. In this study we modify this conventional approach for high-frequency ground-shaking by using site-specific input parameters (referred to as “site-specific”) and analyze improvements over using same parameters for all sites (referred to as “generic”). First, we theoretically understand how different 1D velocity profiles, anelastic attenuation profiles and site-attenuation (κ0) values affects the Fourier Acceleration Spectrum (FAS). Then, we apply site-specific method to simulate 10 events from the 2010-2011 Canterbury earthquake sequence to assess performance against the generic approach in predicting recorded ground-motions. Our initial results suggest that the site-specific method yields a lower simulation standard deviation than generic case.
Friday 22 February 2013. File reference: CCL-2013 -02-22- IMG_4088 From the collection of Christchurch City Libraries.
Friday 22 February 2013. File reference: CCL-2013 -02-22-IMG_4082 From the collection of Christchurch City Libraries.
Friday 22 February 2013. File reference: CCL-2013 -02-22-IMG_4046 From the collection of Christchurch City Libraries.
Friday 22 February 2013. File reference: CCL-2013 -02-22-IMG_3965 From the collection of Christchurch City Libraries.
Friday 22 February 2013. File reference: CCL-2013 -02-22-IMG_3949 From the collection of Christchurch City Libraries.
Friday 22 February 2013. File reference: CCL-2013 -02-22-IMG_3961 From the collection of Christchurch City Libraries.
Friday 22 February 2013. File reference: CCL-2013 -02-22-IMG_3970 From the collection of Christchurch City Libraries.
File Reference: CCL-CE-2013-09-30-EQNZ-2010.JPG Photo taken by G. Coster From the collection of Christchurch City Libraries
Friday 22 February 2013. File reference: CCL-2013-02-22-River-of-FlowersDSC_03413.JPG From the collection of Christchurch City Libraries.
Friday 22 February 2013. File reference: CCL-2013 -02-22-IMG_4038 From the collection of Christchurch City Libraries.
Friday 22 February 2013. File reference: CCL-2013 -02-22-IMG_4077 From the collection of Christchurch City Libraries.
Friday 22 February 2013. File reference: CCL-2013 -02-22-IMG_4036 From the collection of Christchurch City Libraries.
Friday 22 February 2013. Horseshoe Lake, Christchurch. File reference: CCL-2013-02-22-River-of-FlowersDSC_03402.JPG From the collection of Christchurch City Libraries.
Friday 22 February 2013. File reference: CCL-2013 -02-22- IMG_4081 From the collection of Christchurch City Libraries.
Shirley Community Centre, Shirley Road, Christchurch. File reference: CCL-2012-05-10-Around-Shirley-May-2012 DSC_02866.JPG From the collection of Christchurch City Libraries.
Latimer Square, Christchurch File reference: CCL-2012-04-06-LatimerSquare-April-2012-DSC_0879.JPG From the collection of Christchurch City Libraries.
Latimer Square, Christchurch File reference: CCL-2012-04-06-LatimerSquare-April-2012-DSC_0884.JPG From the collection of Christchurch City Libraries.
Latimer Square, Christchurch File reference: CCL-2012-04-06-LatimerSquare-April-2012-DSC_0862.JPG From the collection of Christchurch City Libraries.
NewsTalkZB Building,Latimer Square, Christchurch File reference: CCL-2012-04-06-LatimerSquare-April-2012-DSC_0867.JPG From the collection of Christchurch City Libraries.
Avonhead Park Cemetery Interment Site. Central plinth. Inscription reads: "Etched in our City’s memory, never to be forgotten. The City of Christchurch" in Spanish. File reference: CCL-2012-02-27-AvonheadParkCemeteryIntermentSite-February-2012 DSC_026.JPG From the collection of Christchurch City Libraries.
Avonhead Park Cemetery Interment Site. Central plinth. Inscription reads: "Etched in our City’s memory, never to be forgotten. The City of Christchurch". File reference: CCL-2012-02-27-AvonheadParkCemeteryIntermentSite-February-2012 DSC_027.JPG From the collection of Christchurch City Libraries.
Photos of the old Canterbury Public Library being demolished. File reference: CCL-2011-09-29-librarydemolition06 From the collection of Christchurch City Libraries.
File reference: CCL-2011-08-12-CanterburyPublic Library pre-demolition-033 From the collection of Christchurch City Libraries.
Photos taken in Lyttelton following the February 22 earthquake. File reference: CCL-2011-05-24--Loons-LYP1120500 From the collection of Christchurch City Libraries
Photos taken at Gap Filler fair on April 9 following the February 22 earthquake. www.gapfiller.org.nz/ File reference: CCL-2011-04-08-Addington-Gapfiller-003.jpg From the collection of Christchurch City Libraries
Photos taken in Bishopdale Library on April 8 following the February 22 earthquake. File reference: CCL-2011-04-08-Bisopdale-After-The-Earthquake-IMG_0450 From the collection of Christchurch City Libraries
Photos taken in Bishopdale Library on April 8 following the February 22 earthquake. File reference: CCL-2011-04-08-Bisopdale-After-The-Earthquake-IMG_0454 From the collection of Christchurch City Libraries
Photos taken in Bishopdale Library on April 8 following the February 22 earthquake. File reference: CCL-2011-04-08-Bisopdale-After-The-Earthquake-IMG_0447 From the collection of Christchurch City Libraries
File reference: CCL-2011-04-08-Lyttelton-Library-P1110823 From the collection of Christchurch City Libraries Photos of Lyttelton Library on Friday 8 April, the day it re-opened after the February 22 earthquake.