Post on 05-Jan-2020
G-R Law
The error Function
Detected Mag. Freq.
V
P
×
Global data
10a bM�
Ogata and Katsura (1993, GJI)
1973-2014 1973-2012
2013-2014
1973-2012 2013-2014 1973-2014
x =
G-R Law
Error Function
Detected Mag. Freq.
V
P
10a bM�
b-value change
P�- value change
V�- value change
1988 - 2013
TIME (days)
TIME (days)
TIME (days)
TIME (years)
Ogata and Katsura (1993, GJI)
b-value change
P�- value change
V�- value change D
ete
ctio
n R
ate
D
ete
ctio
n R
ate
D
ete
ctio
n R
ate
1.5M t
1.0M t
0.5M t
TIME (days) TIME (days)
Smatra region Japan
Japan Japan
TIME (years)
Old JMA catalog MJ vs NEIC mb
NEIC mb vs ISC Mb vs JMA MJ
Ogata (1998, Zisin) Bansal & Ogata (2013, JGR)
MJMA(x,y) = MHINET + 'M (x,y)
MHINET=0.0 MHINET=1.0
MHINET=3.0
MHINET=2.0
MHINET=4.0 MHINET=5.0
Hi-net Magnitude
JM
A M
ag
nit
ud
e
Hi-net Magnitude
JM
A M
ag
nit
ud
e
Hi-net Magnitude
Ma
gn
itu
de
Dif
fere
nce
Magnitude Difference
On going joint work with Omi and colleagues of the NIED at Tsukuba
MJMA(x,y) = MHINET + 'M (x,y)
MHINET=0.0 MHINET=1.0
MHINET=3.0
MHINET=2.0
MHINET=4.0 MHINET=5.0
Hi-net Magnitude
JM
A M
ag
nit
ud
e
Hi-net Magnitude
JM
A M
ag
nit
ud
e
Hi-net Magnitude
Ma
gn
itu
de
Dif
fere
nce
Magnitude Difference
On going joint work with Omi and colleagues of the NIED at Tsukuba