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This file contains a brief description of the format used in the ASCII  version

of the Harvard centroid-moment-tensor (CMT) and European Mediterranean RCMT

Catalogs. The original description of the CMT and RCMT methods can be found in:

Dziewonski, Chou, and Woodhouse, JGR, 86, 2825-2852, 1981.

Dziewonski and Woodhouse, JGR, 88, 3247-3271, 1983.

Ardivsson and Ekstrom, BSSA, 88, 1003-1013, 1998.

All of the moment-tensor solutions have been published in Physics of the

Earth and Planetary Interiors, and new solutions are published there as

quarterly or yearly reports. These reports also contain descriptions of

various enhancements to the original algorithm, including the incorporation

of laterally heterogeneous earth models and the use of broad-band data

for depth determination.

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B010177C  1/ 1/77 11:33:41.6  30.66  137.06 476.05.20.0SOUTH OF HONSHU, JAPAN

MLI BW: 5 14  45 MW: 0  0   0 DT=   4.3 0.7  30.62 0.07  136.80 0.10 476.5  4.8

 DUR 1.8 EX 24 -0.32 0.05  0.80 0.08 -0.48 0.09  1.01 0.10 -0.36 0.08  0.40 0.07

   1.41 29 354  -0.15 31 104  -1.26 45 230   1.34  33 32 -163 289 81  -59

C010277A  1/ 2/77  9:55:28.4 -10.17  118.99  19.05.86.3SUMBA ISLAND REGION

MLI BW: 5 12  45 MW: 5 15 135 DT=   8.8 0.3 -10.41 0.02  118.86 0.04  24.5  1.5

 DUR 6.0 EX 25  2.48 0.09 -2.46 0.05 -0.02 0.07  1.81 0.20  0.06 0.16 -0.01 0.04

   3.07 72 357  -0.02  1  89  -3.06 18 179   3.07 271 27   92  89 63   89

B010177C  1/ 1/77 11:33:41.6  30.66  137.06 476.05.20.0SOUTH OF HONSHU, JAPAN

1st line: event_id, date,origin time,latitude,longitude,depth, mb, MS, region

          (all as reported by NEIS or ISC).

MLI BW: 5 14  45 MW: 0  0   0 DT=   4.3 0.7  30.62 0.07  136.80 0.10 476.5  4.8

2nd line: first three characters: MLI=epicenter info from NEIC Monthly listings;

          PDE=from Preliminary listings; ISC=from ISC catalog.

          Number of stations and total number of body-wave records used in the

          inversion  (5 and 14) and cut-off in seconds (45). Same for mantle

          waves (0, 0 and 0). DT is the centroid time from the inversion

          (4.3 seconds) measured from origin time; its standard error (0.7);

          centroid latitude, longitude and depth, each with standard error.

DUR 1.8 EX 24 -0.32 0.05  0.80 0.08 -0.48 0.09  1.01 0.10 -0.36 0.08  0.40 0.07

3rd line: Assumed half duration (1.8 sec) [NOTE - this value is assumed and is

          not a result of the inversion]; EX=exponent of all moment values that

          follow  (24  means all moments are 'value*10**24'); moment tensor

          elements, each followed immediately by its standard error.

          The coordinate system is r-up, s-South, e-East, and the 6 elements

          are ordered Mrr, Mss, Mee, Mrs, Mre, Mse. See Aki and Richards for

          conversion to other systems.

   1.41 29 354  -0.15 31 104  -1.26 45 230   1.34  33 32 -163 289 81  -59

4th line: moment tensor expressed in its principle axis system;

          eigenvalue (1.41), plunge (29) and strike (354) of eigenvector 1

          -- repeated for 2 other axes. Scalar moment (1.34 -- to be multiplied

          by 10**24). Strike (33), dip (32), and rake (-163) for best

          double couple -- repeated for second nodal plane. Aki and Richards

          convention for fault angles.

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