*HDF FILE FORMAT
*HDF file read statement
read(1,100)
1 ahyp,isol,iseq,iyr,mon,iday,ihr,min,sec,ad,glat,glon,
2 depth,iscdep,mb,ms,mw,ntot,ntel,ndep,igreg,se,ser,sedep,
3 rstadel,openaz1,openaz2,az1,flen1,az2,flen2,avh
100 format(a1,a3,a2,i2,2i3,1x,2i3,f6.2,a1,2f8.3,2f6.1,3f4.1,
1 4i4,3f8.2,3f6.1,4i4,f5.1)
Variable definitions:
ahyp secondary teleseismic azimuth gap a1
blank = <= 180 deg
Z = > 180 deg
or
primary teleseismic azimuth gap
A = < 180 deg
B = < 210 deg and > 180 deg
C = < 240 deg and > 210 deg
D = < 270 deg and > 240 deg
F = > 270 deg
isol solution type a3
HEQ = origin time & hypocenter fixed
DEQ = depth free (sedep <= 15 km)
WEQ = depth fixed at waveform depth
BEQ = depth fixed at BB depth
FEQ = depth fixed by Engdahl
LEQ = depth fixed by program (sedep > 15 km)
XEQ = poor solution (ser > 35 km)
iseq other info (b=blank) a2
bx = earthquake location known to x km (if x is a number)
bc = only regional event data available
Xb = explosion/cavity collapse
Xx = explosion location known to x km (if x is a number)
Mb = CMT solution available
Mx = CMT location known to x km (if x is a number)
Md = depth reviewed and accepted
Mn = depth unreviewed but provisionally accepted
based on => 5 depth phases and/or station(s)
at distance(s) less than the focal depth
Mr = depth under review
Mf = depth set to regional depth estimate
Mh = depth set to Harvard CMT depth
Mx = depth reviewed but not accepted
bd = depth reviewed and accepted
bn = depth unreviewed, but provisionally accepted
based on => 5 depth phases and/or station(s)
at distance(s) less than the focal depth
br = depth under review
bf = depth set to regional depth estimate
bx = depth reviewed but not accepted
iyr year i2
mon month i3
iday day i3
ihr origin hour i4
min origin minute i3
sec origin second f6.2
ad source agency a1
glat geographic latitude f8.3
glon geographic longitude f8.3
depth depth f6.1
iscdep ISC depth f6.1
mb mb magnitude f4.1
ms Ms magnitude f4.1
mw Mw magnitude f4.1
ntot total number of stations used i4
ntel number of teleseismic stations i4
(delta > 28 deg) used
ndep number of depth phase observations i4
(delta > 28 deg) used
igreg Flinn-Engdahl region number i4
se standard error of observations used f8.2
ser standard error in position (km) f8.2
sedep standard error in depth (km) f8.2
rstadel distance to closest station f6.1
openaz1 teleseismic azimuth gap f6.1
openaz2 secondary teleseismic azimuth gap f6.1
az1 semi-axis azimuth f4.0
flen1 semi-axis length f4.1
az2 semi-axis azimuth f4.0
flen2 semi-axis length f4.1
multiply product of len1 and len2 by pi
to get area of 90% confidence ellipse
avh statistical geometric mean of axes f5.1