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The main purpose of the Nordic format is to provide parametric data on seismic events. In SEISAN the Nordic format is also used to link events to waveform data etc.
The Nordic format has 2 versions, Nordic and from SEISAN version 12.0, also Nordic2. Nordic2 has more parameters, however SEISAN operated on both formats.
Each line is always 80 characters long and the last character defines the type of line.
The definition of each type of line is given below under the "FORMAT DESCRIPTION".
Free columns are included for two purposes:
——————————————————————————-
Here are a few examples on the format:
Nordic2 format:
1996 6 7 1325 29.2 L 59.846 5.130 12.0F TES 12 .60 1.9LTES 2.2CTES 2.0LNAO1
GAP=177 2.78 4.5 12.80.000 0.2239E+02 0.6258E+03 -0.2817E+03E
1996 6 7 1325 30.5 L 59.763 5.396 29.2 NAO 2 1.0 2.0LNAO1
8.3 41.0 74.7 1 F
1996-06-07-1324-51S.TEST__009 6
ACTION:SPL 14-12-11 12:04 OP:jh STATUS: ID:19960607132529 L I
STAT COM NTLO IPHASE W HHMM SS.SSS PAR1 PAR2 AGA OPE AIN RES W DIS CAZ7
EGD HHZ NS IP 4 1325 35.950 C BER jh 120.0-1.131047.70 6
EGD HHZ NS END 1325 35.950 111.0 BER jh 0.0 47.70 6
EGD HHZ NS AMP 1325 35.950 11.1 33.3 BER jh 47.70 6
EGD HHN NS ES 1325 42.030 BER jh 70.0-.8901047.70 6
BER BHZ NS00 IP 1325 38.120 C kkk AUT -.9801061.00 11
BER BHZ NS00 END 1325 38.120 55.0 BER jh 4.8 61.00 11
BER BHN NS00 ES 1325 45.440 BER jh 70.0-.9901061.00 11
BER BHZ NS00 IAML A1325 46.710 31.7 0.20 BER jh 0.4 61.00 11
KMY BHZ NS10 IP 1325 40.260 C PPP Ajh 70.0 .3301070.90 175
KMY BHZ NS10 END 1325 40.260 62.0 BER jh 70.90 175
KMY BHN NS10 ES 1325 48.740 BER jh 70.0.3001070.90 175
KMY BHZ NS10 IAML 1325 48.920 83.6 0.20 BER jh 70.90 175
ASK SHZ NS EP 2 1325 39.590 D -1.031071.10 3
ASK SHZ NS END 1325 39.590 68.0 71.10 3
ASK SHZ NS ES 1325 48.070 -1.021071.10 3
ASK SHZ NS AMP 1325 48.070 333.3 2.20 71.10 3
ASK SHZ NS IAML 1325 50.900 111.0 0.30 71.10 3
NRA0 S Z Pn A1326 19.090 50.0-.05010368.0 72
NRA0 S Z END 1326 19.090 333.0 368.0 72
NRA0 S Z BAZ-P 1326 19.090 256.9 6.9 0. 368.0 72
NRA0 S Z Pg 1326 27.940 -.64010368.0 72
NRA0 S Z BAZ 1326 27.940 253.0 7.3 -3. 368.0 72
NRA0 S Z Lg 1327 10.540 -.89010368.0 72
NRA0 S Z BAZ 1327 10.540 266.6 4.1 9. 368.0 72
Notes:
Coda has in Nordic2 phase name END
So far the Nordic2 format only affects type phase lines. SPEC lines also have a new format
using Type S lines which can be read also when using Nordic format.
Nordic format:
1996 6 3 1955 35.5 D 47.760 153.227 0.0 TES 12 1.1 5.6WHRV 5.6bPDE1 GAP=348 2.88 999.9 999.9999.9 -0.1404E+08 -0.3810E+08 0.1205E+09E 1996 0603 1955 31.8 D 46.787153.722 33.0 PDE 5.6bPDE 1 ACTION:SPL 08-10-02 10:19 OP:jh STATUS: ID:19960603195540 I 1996-06-03-2002-18S.TEST__012 6 1996-06-03-1917-52S.TEST__002 6 STAT SP IPHASW D HRMM SECON CODA AMPLIT PERI AZIMU VELO AIN AR TRES W DIS CAZ7 KBS BZ EP 20 4 40.63 23 -1.3210 5724 351 TRO SZ EP 20 5 32.5 21 1.7510 6471 343 LOF SZ IP C 20 5 46.68 21 -0.1110 6729 344 JNW SZ EP 20 5 49.5 21 1.1910 6755 353 JMI LZ I 20 8 27.35 6768 353 JMI LZ I 2014 41.56 6768 353 JMI LZ I 2021 25.49 6768 353 MOL SZ IP C 20 6 25.49 19 -1.7410 7408 343 FOO SZ EP 20 6 35.99 19 0.1210 7559 344 HYA SZ EP 20 6 36.91 19 -0.1410 7580 343 SUE SZ IP C 20 6 39.07 19 -0.2810 7621 344 KONO BZ IP C 20 6 40.72 19 -0.7010 7657 341 ASK SZ EP 9 20 6 37.24 19 -4.94 0 7671 344 BER SZ EP 9 20 6 37.43 19 -5.16 0 7678 344 EGD SZ EP 9 20 6 38.42 19 -4.95 0 7692 344 ODD1 SZ EP 20 6 45.57 19 1.7310 7699 343 BLS5 SZ EP 20 6 46.33 19 -0.5010 7753 343
Below are examples of how the last free columns of type phase lines are used in e.g. the Nordic Databank in Helsinki and in Bergen:
1985 510 21 5 16.1 LE 60.240 6.170 30.0F BER 6 2.3 3.8LNAO 4.0bPDE 3.2sISC 1
1.5 0.5 0.9 5.0 0.4 5
8505210425.WNN 6
ACTION:UPD 93-07-09 09:40 OP:jens STATUS: ID:19920101080359 I
STAT SP IPHASW D HRMM SECON CODA AMPLIT PERI AZIMU VELO AIN AR TRES W DIS CAZ7
STAT SP IPHASW D HRMM SECON CODA AMPLIT PERI AZIMU VELO AIN AR TRES W DIS CAZ7
8505210425.WNN 6
ACTION:UPD 93-07-09 09:40 OP:jens STATUS: ID:19920101080359 I
STAT SP IPHASW D HRMM SECON CODA AMPLIT PERI AZIMU VELO AIN AR TRES W DIS CAZ7
NRSA SZ IPN 1 D 2105 13.44 0345 1234.6 1.33 245.2 08.6 22 2 -0.7 9 555 235
BER SZ IPG 2 U 2105 25.41 200
HYA SZ ISG 1 2105 33.1
ODD SZ IP 3 2105 20.1 250
ODD SZ EPG 2105 22.9
ODD SZ LG 2105 55.8
Note in the below example the fault plane solution line(F) and the HYP error line(E)
1993 1028 0800 26.4 L 57.518 7.119 18.8 BER 6 .6 2.6CBER 1
GAP=201 1.20 6.4 7.0 6.8 .3359E+01 -.2719E+00 .3054E+02E
93.2 74.8 -48.2 2 F
ACTION:SPL 95-01-08 09:40 OP:jh STATUS: ID:19931028080019 I
9310-28-0800-19S.NSN__17 6
STAT SP IPHASW D HRMM SECON CODA AMPLIT PERI AZIMU VELO AIN AR TRES W DIS CAZ7
BLS5 SZ EP D 8 0 56.80 129 -.110 216 349
BLS5 SZ ESG 8 1 23.59 -.910 216 349
BLS5 SZ EP 8 0 56.80 129 -.110 216 349
BLS5 SZ ESG 8 1 23.59 -.910 216 349
Note:
Location parameters in phase lines under Type 7 is:
AR : Azimuth residual when using azimuth information in locations
TRES: Travel time residual
W : Actual weight used for location ( inc. e.g. distance weight), i2
DIS : Epicentral distance in km
CAZ : Azimuth from event to station
-----------------------------------------------------------------------------
Note: Type 1 line must be the first, all phase type lines should be together and
the last line must be blank
--------------------------------------------------------------------------------
FORMAT DESCRIPTION, Type descriptions:
The details on the type lines is given below, the title us the used types is:
-------------------------------------------------------------------------------- Type 1 line: Hypocenter line Type 2 line: Macroseismic information Type 3 line: Comments Type Phase lines Nordic2 Type Phase lines Nordic pre v12.0 Type 5 line: Error estimates of previous line, not used by any SEISAN programs. Type 6 line: Waveform data file name or link to where waveform data is found. Type 7 line: Title line for phases, fixed text, different for Nordic and Nordic2 format. Type E line: Hypocenter error estimate of prime hypocenter, only one E-line in S-file Type F line: Fault plane solution Type H line: High accuracy hypocenter line Type I line: ID line Type M line: Moment tensor solution Type P line: Picture file name Type S line: Spectral parameters (new from verision 12) Type E13 and EC3 line: Explosion information Type MACRO3 line: File name of macroseismic observations in ISO directory --------------------------------------------------------------------------------
FORMAT DESCRIPTION, Type details:
Type 1 line - Hypocenter line:
------------------------------
Columns Format Description Comments
1 Free
2- 5 I4 Year
6 A1 Can optinally be location program code if not Hyopocenter (blank)
7- 8 I2 Month
9-10 I2 Day of Month
11 Fix o. time Normally blank, an F fixes origin time
12-13 I2 Hour
14-15 I2 Minutes
16 Free
17-20 F4.1 Seconds
21 Location model indicator Any character
22 A1 Distance Indicator L = Local, R = Regional, D = Distant, etc.
23 A1 Event ID E = Confirmed explosion
P = Probable explosion
V = Volcanic
Q = Confirmed earthquake
' ' = Presumed earthquake
L = Landslide (was X)
S = Acoustic signal
I = triggered or induced
O = confirmed other event
C = Cryogenic event (e.g. ice quake)
G = Glacial earthquake (subset of C)
U = Unknown event type
24-30 F7.3 Latitude Degrees (+ N)
31-38 F8.3 Longitude Degrees (+ E)
39-43 F5.1 Depth Km
44 A1 Depth Indicator F = Fixed, S = Starting value
45 A1 Locating indicator ----------------------------, * do not locate
46-48 A3 Hypocenter Reporting Agency
49-51 Number of Stations Used
52-55 RMS of Time Residuals
56-59 F4.1 Magnitude No. 1
60 A1 Type of Magnitude L=ML, b=mb, B=mB, s=Ms, S=MS, W=MW,
G=MbLg (not used by SEISAN), C=Mc
61-63 A3 Magnitude Reporting Agency
64-67 F4.1 Magnitude No. 2
68 A1 Type of Magnitude
69-71 A3 Magnitude Reporting Agency
72-75 F4.1 Magnitude No. 3
76 A1 Type of Magnitude
77-79 A3 Magnitude Reporting Agency
80 A1 Type of this line ("1"), can be blank if first line of event
If more than 3 magnitudes need to be associated with the hypocenter in the first line, a
subsequent additional type one line can be written with the same year, month, day until event
ID and hypocenter agency. The magnitudes on this line will then be associated with the main
header line and there is then room for 6 magnitudes.
Column number example:
1 2 3 4 5 6 7 8
12345678901234567890123456789012345678901234567890123456789012345678901234567890
1996 6 3 1955 35.5 D 47.760 153.227 0.0 TES 12 1.1 5.6WHRV 5.6bPDE1
Type 2 line - Macroseismic information:
---------------------------------------
1-5 Blank
6-20 a Any descriptive text
21 Free
22 a1 Diastrophism code (PDE type)
F = Surface faulting
U = Uplift or subsidence
D = Faulting and Uplift/Subsidence
23 a1 Tsunami code (PDE type)
T = Tsunami generated
Q = Possible tsunami
24 a1 Seiche code (PDE type)
S = Seiche
Q = Possible seiche
25 a1 Cultural effects (PDE type)
C = Casualties reported
D = Damage reported
F = Earthquake was felt
H = Earthquake was heard
26 a1 Unusual events (PDE type)
L = Liquefaction
G = Geysir/fumerol
S = Landslides/Avalanches
B = Sand blows
C = Cracking in the ground (not normal faulting).
V = Visual phenomena
O = Olfactory phenomena
M = More than one of the above observed.
27 Free
28-29 i2 Max Intensity
30 a1 Max Intensity qualifier
(+ or - indicating more precicely the intensity)
31-32 a2 Intensity scale (ISC type defintions)
MM = Modified Mercalli
RF = Rossi Forel
CS = Mercalli - Cancani - Seberg
SK = Medevev - Sponheur - Karnik33 Free
34-39 f6.2 Macroseismic latitude (Decimal)
40 Free
41-47 f7.2 Macroseismic longitude (Decimal)
48 Free
49-51 f3.1 Macroseismic magnitude
52 a1 Type of magnitudeI = Magnitude based on maximum Intensity.
A = Magnitude based on felt area.
R = Magnitude based on radius of felt area.
* = Magnitude calculated by use of special formulas
developed by some person for a certain area.
Further info should be given on line 3.
53-56 f4.2 Logarithm (base 10) of radius of felt area.
57-61 f5.2 Logarithm (base 10) of area (km**2) number 1 where
earthquake was felt exceeding a given intensity.
62-63 i2 Intensity boardering the area number 1.
64-68 f5.2 Logarithm (base 10) of area (km**2) number 2 where
earthquake was felt exceeding a given intensity.
69-70 i2 Intensity boardering the area number 2.71 Free
72 a1 Quality rank of the report (A, B, C, D) 73-75 a3 Reporting agency
76-79 Free
80 a1 Type of this line ("2")
Type 3 line - Comments:
-----------------------
Columns Format Description Comments
1 Free
2-79 A Text Anything (ASCII printable characters https://en.wikipedia.org/wiki/ASCII)
80 A1 Type of this line ("3")
Examples:
This type of line can be used to specify xnear, xfar and the starting depth for use with
HYPOCENTER. For example
XNEAR 200.0 XFAR 400.0 SDEP 15.0 3
8-13 f6.1 Xnear
20-25 f6.1 Xfar
32-36 f5.1 Starting depth
Type Phase lines Nordic2:
-------------------------
Type Phase lines has blank last char.
Columns Format Description Comments
1 Free
2- 6 A5 Station Name
7-9 A3 Component, eg SHZ
10 Free
11-12 A2 Network code
13-14 A2 Location
15 Free
16 A1 Quality Indicator I, E, etc.
17-24 A8 Phase ID PN, PG, LG, P, S, etc.
25 I1 Weighting Indicator (1-4) 0 or blank= full weight, 1=75%, 2=50%,
3=25%,4=0%, 9: no weight, time (e.g. P-S).
26 Free or flag A to indicate automatic pick, removed when picking
27-28 I2 Hour Hour can be up to 48 to indicate next day
29-30 I2 Minutes
31 Free
32-37 F6.0 Seconds
38-44 Parameter 1. If a phase, it is polarity in column 44
If phase END for coda, it is duration(s)(F)
If amplitude phase, it is amplitude (G7)
Amplitude is(Zero-Peak) in units of nm,
nm/s, nm/s^2 or counts.
If back azimuth phase (BAZ), it a back azimuth (F)
45-50 Parameter 2 If a phase or END, it is blank
If an amplitude, it is period (F)
If back azimuth phase, it is apparent velocity(km/s)
51 Free
52-54 A3 Agency
55 Free
56-58 A3 Operator
59 Free
60-63 F4.0 Angle of incidence
64-68 F5.1 Residual, can be travel time, back azimuth or magnitude
69-70 I2 Weight used, like 05 is 0.5
71-75 F5.0 Epicentral distance(km)
76 Free
77-79 I3 Azimuth at source
80 A1 Type of this line (" ")
Type Phase lines Nordic pre v12.0:
----------------------------------
Type Phase lines has blank last char (in pre v12.0 manuals these lines could also be Type 4).
Columns Format Description Comments
1 Free
2- 6 A5 Station Name Blank = End of readings = end of event
7 A1 Instrument Type S = SP, I = IP, L = LP etc
8 A1 Component Z, N, E ,T, R, 1, 2
9 Free or weight, see note below
10 A1 Quality Indicator I, E, etc.
11-14 A2 Phase ID PN, PG, LG, P, S, etc. **
15 I1 Weighting Indicator (1-4) 0 or blank= full weight, 1=75%, 2=50%, 3=25%,4=0%, 9: no weight, use difference
time (e.g. P-S).
16 Free or flag A to indicate automartic pick, removed when picking
17 A1 First Motion C, D
18 Note: Currently 15 to 18 can also be used for phase assuming
column 11-14 is not blank. See note ** below.
19-20 I2 Hour Hour can be up to 48 to
indicate next day
21-22 I2 Minutes
23-28 F6.0 Seconds
29 Free
30-33 I4 Duration (to noise) Seconds
34-40 g7.1 Amplitude (Zero-Peak) in units of nm, nm/s, nm/s^2 or counts.
41 Free
42-45 F4.0 Period Seconds
46 Free
47-51 F5.0 Direction of Approach, back azimuth Degrees
52 Free
53-56 F4.0 Phase Velocity Km/second
57-60 F4.0 Angle of incidence (was Signal to noise ratio before version 8.0)
61-63 I3 Back azimuth residual
64-68 F5.1 Travel time residual
69-70 I2 Weight
71-75 F5.0 Epicentral distance(km)
76 Free
77-79 I3 Azimuth at source
80 A1 Type of this line (" ").
NB: Epicentral distance: Had format I5 before version 7.2. All old lines can
be read with format F5.0 with same results, but now distance can also be
e.g. 1.23 km which cannot be read by earlier versions. However, an UPDATE
would fix that.
** Long phase names: An 8 character phase can be used in column 11-18. There
is then not room for polarity information. The weight is then put into column 9.
This format is recognized by HYP and MULPLT.
Type phase cards should be followed by a Blank Card (Type 0)
Type 5 line - Error estimates:
------------------------------
Error estimates of previous line, not used by any SEISAN program.
Columns Format Description Comments
1 Free
2-79 Error estimates in same format as previous line, normallytype 4
80 A1 Type of this line ("5")
Type 6 line - Waveform data:
----------------------------
Gives waveform data file name or link to where waveform data is found.
This is mostly a file name but can also be a reference to a position
in an archive.
Columns Format Description Comments
1 Free
2-79 Name of file or archive reference, a-format,
80 Type of this line ("6")
Example:
1996-06-07-1324-51S.TEST__009 6
Archive reference:
Example:
ARC STAT COM NT LO YYYY MMDD HHMM SS DUR 3
ARC ROSA BHZ PM 2010 1011 0100 00 14400 6
ARC _GSN 2010 1011 0100 00 14400 6
Columns Format Description Comments
1 Free
2-04 Must be the keyword ARC
5 Free
6-10 Station (a5)
11 Free
12-14 Compoent (a3)
15 Free
16-17 network (a2)
18 Free
19-20 Location (a2)
21 Free
22-38 Year,month,day,hour.min,sec (i4,1x,2i2,1x,2i2,1x,i2)
39 Free
40-44 Duration of extract (s), (i5)
46-79 Free
80 Type of this line ("6")
If first station char is _ the following string defines a virtual network
code, see _GSN above. If it is a * all stations are read.
Type 7 line - Title line for phases, fixed text
------------------------
Columns Format Description Comments
1 Free
2-79 A Help lines to place the numbers in right positions
80 A1 Type of this line ("7")
Example Nordic2 format:
STAT COM NTLO IPHASE W HHMM SS.SSS PAR1 PAR2 AGA OPE AIN RES W DIS CAZ7
Example Nordic format:
STAT SP IPHASW D HRMM SECON CODA AMPLIT PERI AZIMU VELO AIN AR TRES W DIS CAZ7
Type E line - Error estimate of hypocenter:
-------------------------------------------
Before version 12.0 there was only one E-line in S-file which could only belong to
the main hypocenter.
In order to know which E-line belongs to which 1-line, the location program indicator
and the agency must match. If only one E-line and no agency, it is assumed
it belongs to the main hypocenter. This ensures backwards compatibility. Multiple
E-lines can be used in both Nordic and Nordic2 format.
Columns Format Description
1 Free
2 - 5 A4 The text GAP=
6 - 8 I3 Gap
10:10 A1 Location program indicator, blank for Hypocenter (new from version 12)
11:11 Free
12:14 A3 Agency (new from version 12)
15-20 F6.2 Origin time error
25-30 F6.1 Latitude (y) error
31-32 Free
33-38 F6.1 Longitude (x) error (km)
39-43 F5.1 Depth (z) error (km)
44-55 E12.4 Covariance (x,y) km*km
56-67 E12.4 Covarience (x,z) km*km
68-79 E14.4 Covariance (y,z) km*km
Type F line - Fault plane solution:
-----------------------------------
Columns Format Description
1:30 3F10.0 Strike, dip and rake, Aki convention
31:45 3F5.1 Error in strike dip and rake (HASH), error in fault plane and
aux. plane (FPFIT)
46:50 F5.1 Fit error: FPFIT and HASH (F-fit)
51:55 F5.1 Station distribution ratio (FPFIT, HASH)
56:60 F5.1 Amplitude ratio fit (HASH, FOCMEC)
61:62 I2 Number of bad polarities (FOCMEC, PINV)
64.65 I2 Number of bad amplitude ratios (FOCMEC)
67:69 A3 Agency code
71:77 A7 Program used
78:78 A1 Quality of solution, A (best), B C or D (worst), added manually
79:79 A1 Blank, can be used by user
80:80 A1 F
Type H line - High accuracy hypocenter line:
--------------------------------------------
The S-file can include a type=H line for each hypocenter (new from version 12).
Prior to version 12.0 only one type=H line was allowed in SEISAN.
The H line gives the same solution as the type=1 line, but with higher accuracy.
In order to know which H-line belongs to which 1-line, the location program indicator
and the agency must match. If only one H-line and no agency, it is assumed
it belongs to the main hypocenter. This ensures backwards compatibility.
Multiple H-lines can be used in both Nordic and Nordic2 format.
Columns
1:55 As type 1 line including program used in column 6 (new from version 12)
16 Free
17 Seconds, f6.3
23 Free
24:32 Latitude, f9.5
33 Free
34:43 Longitude, f10.5
44 Free
45:52 Depth, f8.3
53 Free
54:59 RMS, f6.3
61:63 Agency, A3 (new from version 12)
62:79 Free
80 H
Type I Line, ID line:
---------------------
Columns Format description1 Free
2:8 Help text for the action indicator
9:11 Last action done, so far defined
ARG: AUTO Register, AUTOREG
ARX: From ARC extract
DPH: Phases deleted with DELS
DUP: Duplicated event
HIN: Updated with HYPOINVERSE
NEW: New event
REE: Register from EEV
REG: Register
SPL: Split
UPD: Update with HYP
UP : Update with HYP only from EEV
12 Free
13:26 Date and time of last action
27 Free
28:30 Help text for operator
36:42 Help text for status
43:56 Status flags, not yet defined
57 Free
58:60 Help text for ID
61:74 ID, year to second
75 If d, this indicate that a new file id had to be created which was
one or more seconds different from an existing ID to avoid overwrite.
76 Indicate if ID has been synchronized with origin time.
Blank means not syncronized, S means synchonized. In version 11 and before
this was L. Only for information.
Type M line - Moment tensor solution:
-------------------------------------
Note: the type M lines are pairs of lines with one line that gives the hypocenter
time, and one line that gives the moment tensor values:
The first moment tensor line:
Columns Format Description
1:1 Free
2: 5 I4 Year
7: 8 I2 Month
9:10 I2 Day of Month
12:13 I2 Hour
14:15 I2 Minutes
17:20 F4.1 Seconds
24:30 F7.3 Latitude Degrees (+ N)
31:38 F8.3 Longitude Degrees (+ E)
39:43 F5.1 Depth Km
46:48 A3 Reporting Agency
56:59 F4.1 Magnitude
60 A1 Type of Magnitude L=ML, b=mb, B=mB, s=Ms, S=MS, W=MW,
61:63 A3 Magnitude Reporting Agency
71:77 A7 Method used
78:78 A1 Quality of solution, A (best), B C or D (worst), added manually
79:79 A1 Blank, can be used by user
80:A1 M
The second moment tensor line:
Columns Format Description
1:1 Free
2:3 A2 MT
4:9 F6.3 Mrr or Mzz [Nm] divided by exponential
11:16 F6.3 Mtt or Mxx [Nm] ------
18:23 F6.3 Mpp or Myy [Nm] ------
25:30 F6.3 Mrt or Mzx [Nm] ------
32:37 F6.3 Mrp or Mzy [Nm] ------
39:44 F6.3 Mtp or Mxy [Nm] ------
46:48 A3 Reporting Agency
49:49 A1 MT coordinate system (S=spherical, C=Cartesian)
50:51 i2 Exponental
53:62 G6.3 Scalar Moment [Nm]
71:77 A7 Method used
78:78 A1 Quality of solution, A (best), B C or D (worst), added manually
79:79 A1 Blank, can be used by user
80:80 A1 M
All moment values must be multiplied by the exponent
Type P line - Picture file name:
--------------------------------
These lines are used to link to pictures in e.g. png/jpg format.
1:1 Free
2:79 File name
80:80 P
Type S line - Specrtral information:
------------------------------------
S lines are generated by AUTOMAG and MULPLT. This format will
only be generated with SEISAN version 12.0, however version 12.0 will
also read the old spectral format.
Columns Format Abbreviation Description
1 Free
2- 6 A5 STA Station
7- 9 A3 COM Component
10-11 A2 NT Network
12 13 A2 LO Location
14 Free
15-18 F OM Log Omega0
19-22 F F0 Corner frequency(Hz)
23-25 F AL Spectral slope
26-31 3i2 T Hour Min Sec for start of spectrum
32-35 F WI Window length(s)
36-40 F GD Geo-distance(km)
41-44 F MO Log moment
45-47 F ST Stress drop(bar)
48-51 F R Source radius(km)
52-55 F K Kappa
56-59 F V Velocity at source(km/s)
60-60 A X Type of spectrum,, P or S
61-64 F DE Density at source (g/cm*cm*cm)
65-68 F Q0 Q0
69-72 F QA Q-alpha
73-75 F Q1 Frequency(Hz) below which Q(f) changes to constant Q
76-79 F MW Moment magnitude
There is also an explanatory type S-line, for abbreviations, see above
STA COM NTLO OM F0 AL T WI GD MO ST R K VX DE Q0 QA Q1 MWS
There is an average spctral S-line
AV-SD MO 12.4 0.1 ST 0.0 0.0 F0 1.10.046 R 0.082.045 AL 2.0 0.0 MW 2.20 0.1 S
identified by AV-SD. Abbreviations are the same as above and the extra number after
each value is standard deviation.
Type E13 and EC3 line - Explosion information:
----------------------------------------------
Example
1980 0124 0927 CHARGE(T): 0.5 E13 LE Haakonsvern, HAA underwater explosion E13 EC3
Information on explsion site, time and agency, same format as a type 1 line,
no magnitudesused, last 3 columns must be E13
EC3 Information on charge and site
Columns
2:11 Info text
11:12 Blank
13:22 Charge in tons, f10.3
23:77 Any information, a
78:80 EC3
Type MACRO3 line: File name of macroseismic observations:
---------------------------------------------------------
The files are located in the ISO directory.
Example:
1980-03-14-0456-05.MACRO MACRO3
An example of the file is:
Sunnfjord 1980 314 456 5 GMT 1980 314 556 5 Local time
Comment
60.500 5.270 1.0 EMS 5088 MJOELKERAAEN
60.560 5.260 1.0 EMS 5100 ISDALSTOE
60.570 5.050 1.0 EMS 5112 ROSSLAND
1. Line
Location, GMT time, Local time. Format a30,i4,1x,2i2,1x,2i2,1x,i2,'
GMT',1x,i4,1x,2i2,1x,2i2,1x,i2,1x,'Local time'
2. Line Comments
3. Line Observations: Latitude, Longitude,intensity, code for scale,
postal code or similar, location,Format 2f10.4,f5.1,1x,a3,1x,a10,2x,a.
Note the postal code is an ascii string and left justified (a10).
Type 3 line giving xnear/xfar:
------------------------------
Definition of xnear and xfar to be used with HYPOCENTER.
Example
XNEAR 1000.0 XFAR 2000.0 3
Columns
8-13: xnear value
20-25: xfar value
Type 3 line with locality:
--------------------------
Example
LOCALITY: atlantic ocean 3
Type 3 line with felt information:
-----------------------------------
Example
FELTINFO: cracks in the ground at xx 3