1.21 Takahashi et al. (2004)
1)
Reference
Toshimasa Takahashi, Akihiro Asano, Taketoshi
Saiki, Hidenobu Okad, Kojiro Irikura, John X. Zhao, Jian Zhang, Hong K. Thio, Paul G.
Somervill, Yasuhiro Fukushima and Yoshimitsu
Fukushima, 2004, Attenuation Models for Response Spectra Derived from Japanese
Strong-motion Records Accounting for Tectonic source Types, 13th
world Conference on Earthquake engineering
2)
Estimated
physical parameter
- Peak ground acceleration
- Acceleration response spectrum (h=5%, T=0.02 to 5.00 sec)
(Horizontal))
3)
Used
strong motion data
- Area:
- Type of earthquake: Crustal, Interface, Slab
- Period:
- Number of events: Japan 249,
- Number of records:
- Magnitude: Mw>5.0
- Epicentral distance:
4)
Style
of faulting
(a) Reverse
(b) Strike-slip
(c)
5)
Ground
condition
(a) Rock
(b) Hard soil
(c) Medium soil
(d) Soft soil
6)
Definition
of magnitude
Moment magnitude
7)
Definition
of source distance
Source distance
8)
Definition
of horizontal components
Geometric mean of
two horizontal components
9)
Applicability
written in the paper
Depth<120km
10) Empirical attenuation formula
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yi,j: peak ground acceleration (PGA) (cm/s2)or
5% damped acceleration response
spectrum (cm/s2)
T: spectral periods
M: moment magnitude
x: source distance
(km)
h: focal depth
(km)
SR: crustal
events with a reverse-faulting mechanism and zero for all events
SI: interface events and zero
for all other events
SS: subduction
slab events and zero for all other type events
SK: site-class term,
SCⅠ : Rock
SCⅡ : Hard
soil
SCⅢ : Medium
soil
SCⅣ : Soft
soil
hc:
depth constant (=15km)
δh:
dummy variable (0 : h<hc, 1 : h≥hc)
ξ: intra-event
errors with zero mean and a standard deviation of σ
η: inter-event
errors with zero mean and a standard deviation of τ
[Standard Deviation]
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σT: total standard error
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Table 1.21-1
Coefficients for the model