HRV Seismogram Archival Project: Scanned Images and Digitized Time Series (1938)

Archival Project Top Page
Status of Archival Project
Scanned Images Top Page
DigitSeis: Digitization Software

Choose month or day of interest. Dates with available links indicate image availability and those with highlighted background indicate digitized time series availability (see description in Components for the file format). Once the file of interest is found, please use the right button of your mouse to save the image to your computer.

JanuaryFebruaryMarch
1 1 2 3 4 5 1 2 3 4 5
2 3 4 5 6 7 8 6 7 8 9 10 11 12 6 7 8 9 10 11 12
9 10 11 12 13 14 15 13 14 15 16 17 18 19 13 14 15 16 17 18 19
16 17 18 19 20 21 22 20 21 22 23 24 25 26 20 21 22 23 24 25 26
23 24 25 26 27 28 29 27 28 27 28 29 30 31
30 31
AprilMayJune
1 2 1 2 3 4 5 6 7 1 2 3 4
3 4 5 6 7 8 9 8 9 10 11 12 13 14 5 6 7 8 9 10 11
10 11 12 13 14 15 16 15 16 17 18 19 20 21 12 13 14 15 16 17 18
17 18 19 20 21 22 23 22 23 24 25 26 27 28 19 20 21 22 23 24 25
24 25 26 27 28 29 30 29 30 31 26 27 28 29 30
JulyAugustSeptember
1 2 1 2 3 4 5 6 1 2 3
3 4 5 6 7 8 9 7 8 9 10 11 12 13 4 5 6 7 8 9 10
10 11 12 13 14 15 16 14 15 16 17 18 19 20 11 12 13 14 15 16 17
17 18 19 20 21 22 23 21 22 23 24 25 26 27 18 19 20 21 22 23 24
24 25 26 27 28 29 30 28 29 30 31 25 26 27 28 29 30
31
OctoberNovemberDecember
1 1 2 3 4 5 1 2 3
2 3 4 5 6 7 8 6 7 8 9 10 11 12 4 5 6 7 8 9 10
9 10 11 12 13 14 15 13 14 15 16 17 18 19 11 12 13 14 15 16 17
16 17 18 19 20 21 22 20 21 22 23 24 25 26 18 19 20 21 22 23 24
23 24 25 26 27 28 29 27 28 29 30 25 26 27 28 29 30 31
30 31

1937 Back to List of Years 1939 →

s1524_1938_0530_0531_LP_ZEW_f.jpg

January

Date Instrument Components
12/31 - 01/01 SP Z (1.45 GB)     Info
JPG (48 MB)
NS (1.44 GB)     Info
JPG (46 MB)
EW (1.44 GB)     Info
JPG (45 MB)
LP Z&EW (1.48 GB)     Info
JPG (53 MB)
Z&EW (1.48 GB)     Info
JPG (53 MB)
12/31 - 01/02 LP NS (1.46 GB)     Info
JPG (48 MB)
01/02 - 01/03 SP Z (1.46 GB)     Info
JPG (50 MB)
NS (1.44 GB)     Info
JPG (49 MB)
EW (1.46 GB)     Info
JPG (49 MB)
LP Z/EW (1.5 GB)     Info
JPG (57 MB)
Z/EW (1.5 GB)     Info
JPG (57 MB)
01/02 - 01/04 LP NS (1.5 GB)     Info
JPG (57 MB)
01/14 - 01/15 SP Z (1.41 GB)     Info
JPG (40 MB)
LP Z/EW (1.45 GB)     Info
JPG (48 MB)
NS (1.42 GB)     Info
JPG (40 MB)
Z/EW (1.45 GB)     Info
JPG (48 MB)
01/15
03:45-11:45
SP Z (1.39 GB)     Info
JPG (39 MB)
NS (1.37 GB)     Info
JPG (32 MB)
EW (1.37 GB)     Info
JPG (33 MB)
LP Z/EW (1.41 GB)     Info
JPG (44 MB)
NS (1.39 GB)     Info
JPG (38 MB)
Z/EW (1.41 GB)     Info
JPG (44 MB)
01/15
12:00-16:25
SP Z (1.4 GB)     Info
JPG (35 MB)
NS (1.4 GB)     Info
JPG (35 MB)
"Drum worm moutning loose caused stoppage noted on preceeding 2 records"
"tightened previous to putting this record on"
EW (1.4 GB)     Info
JPG (34 MB)
LP Z/EW (1.41 GB)     Info
JPG (40 MB)
NS (1.39 GB)     Info
JPG (35 MB)
Z/EW (1.41 GB)     Info
JPG (40 MB)
01/15
16:25-20:40
SP Z (1.4 GB)     Info
JPG (35 MB)
LP Z/EW (1.4 GB)     Info
JPG (37 MB)
Z/EW (1.4 GB)     Info
JPG (37 MB)
01/16 - 01/17 SP Z (1.46 GB)     Info
JPG (45 MB)
NS (1.42 GB)     Info
JPG (42 MB)
01/22 - 01/23 SP Z (1.46 GB)     Info
JPG (49 MB)
NS (1.46 GB)     Info
JPG (48 MB)
EW (1.44 GB)     Info
JPG (46 MB)
LP Z/EW (1.44 GB)     Info
JPG (47 MB)
Z/EW (1.44 GB)     Info
JPG (47 MB)
01/22 - 01/24 LP NS (1.47 GB)     Info
JPG (49 MB)
1/23 - 01/24 SP Z (1.46 GB)     Info
JPG (48 MB)
NS (1.45 GB)     Info
JPG (46 MB)
EW (1.44 GB)     Info
JPG (45 MB)
LP Z/EW (1.44 GB)     Info
JPG (46 MB)
Z/EW (1.44 GB)     Info
JPG (46 MB)

February

Date Instrument Components
02/01 - 02/02 SP Z (1.45 GB)     Info
JPG (43 MB)
NS (1.44 GB)     Info
JPG (42 MB)
EW (1.42 GB)     Info
JPG (39 MB)
LP Z/EW (1.44 GB)     Info
JPG (44 MB)
NS (1.43 GB)     Info
JPG (38 MB)
Z/EW (1.44 GB)     Info
JPG (44 MB)
02/04 - 02/05 SP Z (1.46 GB)     Info
JPG (50 MB)
NS (1.46 GB)     Info
JPG (50 MB)
EW (1.46 GB)     Info
JPG (48 MB)
LP Z/EW (1.5 GB)     Info
JPG (55 MB)
Z/EW (1.5 GB)     Info
JPG (55 MB)
02/04 - 02/06 LP NS (1.49 GB)     Info
JPG (55 MB)
02/12 - 02/13 LP Z/EW (1.5 GB)     Info
JPG (55 MB)
Z/EW (1.5 GB)     Info
JPG (55 MB)
02/12 - 02/14 LP NS (1.45 GB)     Info
JPG (52 MB)
02/13 - 02/14 SP Z (1.41 GB)     Info
JPG (47 MB)
NS (1.42 GB)     Info
JPG (47 MB)
EW (1.42 GB)     Info
JPG (47 MB)
LP Z/EW (1.45 GB)     Info
JPG (55 MB)
Z/EW (1.45 GB)     Info
JPG (55 MB)
02/14 - 02/15 SP Z (1.47 GB)     Info
JPG (51 MB)
NS (1.45 GB)     Info
JPG (49 MB)
EW (1.46 GB)     Info
JPG (49 MB)
LP Z/EW (1.49 GB)     Info
JPG (54 MB)
Z/EW (1.49 GB)     Info
JPG (54 MB)
02/14 - 02/16 LP NS (1.49 GB)     Info
JPG (53 MB)
02/18 - 02/19 SP Z (1.45 GB)     Info
JPG (48 MB)
NS (1.44 GB)     Info
JPG (47 MB)
EW (1.44 GB)     Info
JPG (45 MB)
02/23 - 02/24 SP Z (1.43 GB)     Info
JPG (47 MB)
02/26 - 02/27 SP Z (1.46 GB)     Info
JPG (50 MB)
EW (1.44 GB)     Info
JPG (44 MB)

March

Date Instrument Components
03/03 - 03/04 SP Z (1.49 GB)     Info
JPG (52 MB)
03/06 - 03/08 LP NS (1.49 GB)     Info
JPG (53 MB)
03/07 - 03/08 SP Z (1.45 GB)     Info
JPG (48 MB)
NS (1.45 GB)     Info
JPG (46 MB)
EW (1.44 GB)     Info
JPG (46 MB)
LP Z/EW (1.46 GB)     Info
JPG (50 MB)
Z/EW (1.46 GB)     Info
JPG (50 MB)
03/08 - 03/09 LP Z/EW (1.46 GB)     Info
JPG (50 MB)
Z/EW (1.46 GB)     Info
JPG (50 MB)
03/09 - 03/10 SP Z (1.45 GB)     Info
JPG (48 MB)
NS (1.44 GB)     Info
JPG (46 MB)
EW (1.43 GB)     Info
JPG (45 MB)
LP Z/EW (1.45 GB)     Info
JPG (48 MB)
Z/EW (1.45 GB)     Info
JPG (48 MB)
03/10 - 03/11 SP Z (1.44 GB)     Info
JPG (47 MB)
NS (1.45 GB)     Info
JPG (45 MB)
EW (1.44 GB)     Info
JPG (45 MB)
LP Z/EW (1.47 GB)     Info
JPG (50 MB)
Z/EW (1.47 GB)     Info
JPG (50 MB)
03/10 - 03/12 LP NS (1.48 GB)     Info
JPG (52 MB)
03/11 - 03/12 SP Z (1.44 GB)     Info
JPG (48 MB)
03/16 - 03/18 LP NS (1.5 GB)     Info
JPG (54 MB)
03/17 - 03/18 SP Z (1.5 GB)     Info
JPG (53 MB)
NS (1.49 GB)     Info
JPG (51 MB)
EW (1.47 GB)     Info
JPG (49 MB)
LP Z/EW (1.49 GB)     Info
JPG (55 MB)
Z/EW (1.49 GB)     Info
JPG (55 MB)
03/20 - 03/21 SP Z (1.42 GB)     Info
JPG (44 MB)
LP Z/EW (1.42 GB)     Info
JPG (45 MB)
Z/EW (1.42 GB)     Info
JPG (45 MB)
03/22 - 03/23 SP Z (1.43 GB)     Info
JPG (45 MB)
NS (1.42 GB)     Info
JPG (45 MB)
EW (1.41 GB)     Info
JPG (43 MB)
LP Z/EW (1.44 GB)     Info
JPG (48 MB)
Z/EW (1.44 GB)     Info
JPG (48 MB)
03/22 - 03/24 LP NS (1.43 GB)     Info
JPG (46 MB)

April

Date Instrument Components
04/01 - 04/02 SP Z (1.41 GB)     Info
JPG (41 MB)
NS (1.4 GB)     Info
JPG (39 MB)
EW (1.4 GB)     Info
JPG (38 MB)
LP Z/EW (1.43 GB)     Info
JPG (48 MB)
Z/EW (1.43 GB)     Info
JPG (48 MB)
04/01 - 04/03 LP NS (1.43 GB)     Info
JPG (46 MB)
04/02 SP Z (1.4 GB)     Info
JPG (37 MB)
NS (1.39 GB)     Info
JPG (37 MB)
EW (1.39 GB)     Info
JPG (38 MB)
04/02 - 04/03 SP Z (1.43 GB)     Info
JPG (44 MB)
NS (1.41 GB)     Info
JPG (44 MB)
EW (1.42 GB)     Info
JPG (44 MB)
LP Z/EW (1.44 GB)     Info
JPG (46 MB)
Z/EW (1.44 GB)     Info
JPG (46 MB)
04/04 - 04/05 SP Z (1.53 GB)     Info
JPG (59 MB)
NS (1.44 GB)     Info
JPG (48 MB)
EW (1.45 GB)     Info
JPG (51 MB)
LP Z/EW (1.44 GB)     Info
JPG (46 MB)
Z/EW (1.44 GB)     Info
JPG (46 MB)
04/06 - 04/07 SP Z (1.53 GB)     Info
JPG (58 MB)
NS (1.43 GB)     Info
JPG (47 MB)
EW (1.45 GB)     Info
JPG (50 MB)
04/09 - 04/10 SP Z (1.6 GB)     Info
JPG (66 MB)
NS (1.49 GB)     Info
JPG (53 MB)
EW (1.51 GB)     Info
JPG (58 MB)
04/11 - 04/13 LP NS (1.42 GB)     Info
JPG (6 MB)
04/12 - 04/13 SP Z (1.5 GB)     Info
JPG (55 MB)
NS (1.42 GB)     Info
JPG (47 MB)
EW (1.43 GB)     Info
JPG (49 MB)
LP Z/EW (1.41 GB)     Info
JPG (45 MB)
Z/EW (1.41 GB)     Info
JPG (45 MB)
04/13 - 04/14 SP Z (1.5 GB)     Info
JPG (54 MB)
NS (1.44 GB)     Info
JPG (47 MB)
EW (1.44 GB)     Info
JPG (47 MB)
LP Z/EW (1.43 GB)     Info
JPG (43 MB)
Z/EW (1.43 GB)     Info
JPG (43 MB)
04/13 - 04/15 LP NS (1.41 GB)     Info
JPG (42 MB)
04/14 - 04/15 SP Z (1.5 GB)     Info
JPG (55 MB)
NS (1.43 GB)     Info
JPG (46 MB)
EW (1.44 GB)     Info
JPG (48 MB)
LP Z/EW (1.42 GB)     Info
JPG (42 MB)
Z/EW (1.42 GB)     Info
JPG (42 MB)
04/15 - 04/17 LP NS (1.43 GB)     Info
JPG (44 MB)
04/16 - 04/17 SP Z (1.5 GB)     Info
JPG (54 MB)
NS (1.43 GB)     Info
JPG (45 MB)
EW (1.44 GB)     Info
JPG (47 MB)
LP Z/EW (1.42 GB)     Info
JPG (43 MB)
Z/EW (1.42 GB)     Info
JPG (43 MB)
04/17 - 04/18 SP Z (1.51 GB)     Info
JPG (56 MB)
NS (1.39 GB)     Info
JPG (34 MB)
EW (1.39 GB)     Info
JPG (33 MB)
LP Z/EW (1.42 GB)     Info
JPG (44 MB)
Z/EW (1.42 GB)     Info
JPG (44 MB)
04/17 - 04/19 LP NS (1.42 GB)     Info
JPG (43 MB)
04/18 - 04/19 SP Z (1.54 GB)     Info
JPG (58 MB)
NS (1.44 GB)     Info
JPG (48 MB)
EW (1.45 GB)     Info
JPG (50 MB)
LP Z/EW (1.43 GB)     Info
JPG (45 MB)
Z/EW (1.43 GB)     Info
JPG (45 MB)
04/19 - 04/20 SP Z (1.53 GB)     Info
JPG (59 MB)
NS (1.43 GB)     Info
JPG (48 MB)
EW (1.45 GB)     Info
JPG (51 MB)
LP Z/EW (1.44 GB)     Info
JPG (48 MB)
Z/EW (1.44 GB)     Info
JPG (48 MB)
04/19 - 04/21 LP NS (1.42 GB)     Info
JPG (46 MB)
04/21 - 04/22 SP Z (1.49 GB)     Info
JPG (54 MB)
NS (1.42 GB)     Info
JPG (46 MB)
EW (1.43 GB)     Info
JPG (47 MB)
LP Z/EW (1.41 GB)     Info
JPG (43 MB)
Z/EW (1.41 GB)     Info
JPG (43 MB)
04/21 - 04/23 LP NS (1.41 GB)     Info
JPG (43 MB)
04/22 - 04/23 SP Z (1.51 GB)     Info
JPG (56 MB)
NS (1.43 GB)     Info
JPG (47 MB)
EW (1.44 GB)     Info
JPG (49 MB)
LP Z/EW (1.41 GB)     Info
JPG (44 MB)
Z/EW (1.41 GB)     Info
JPG (44 MB)
04/24 - 04/25 SP Z (1.47 GB)     Info
JPG (51 MB)
LP Z/EW (1.41 GB)     Info
JPG (43 MB)
Z/EW (1.41 GB)     Info
JPG (43 MB)
04/25 - 04/26 SP Z (1.53 GB)     Info
JPG (58 MB)
NS (1.43 GB)     Info
JPG (47 MB)
EW (1.44 GB)     Info
JPG (49 MB)
LP Z/EW (1.44 GB)     Info
JPG (47 MB)
Z/EW (1.44 GB)     Info
JPG (47 MB)
04/25 - 04/27 LP NS (1.41 GB)     Info
JPG (43 MB)
04/26 - 04/27 SP Z (1.48 GB)     Info
JPG (52 MB)
NS (1.43 GB)     Info
JPG (46 MB)
EW (1.43 GB)     Info
JPG (48 MB)

May

Date Instrument Components
05/01 - 05/03 LP NS (1.4 GB)     Info
JPG (42 MB)
05/02 - 05/03 SP Z (1.51 GB)     Info
JPG (56 MB)
NS (1.42 GB)     Info
JPG (46 MB)
LP Z/EW (1.42 GB)     Info
JPG (45 MB)
EW (1.43 GB)     Info
JPG (48 MB)
The information at the back of the seismogram indicates LP, but the data suggest SP
05/04 - 05/05 SP Z (1.49 GB)     Info
JPG (53 MB)
NS (1.43 GB)     Info
JPG (45 MB)
LP EW (1.43 GB)     Info
JPG (46 MB)
The information at the back of the seismogram indicates LP, but the data suggest SP
05/05 - 05/07 LP NS (1.42 GB)     Info
JPG (43 MB)
05/06 - 05/07 SP Z (1.52 GB)     Info
JPG (56 MB)
NS (1.44 GB)     Info
JPG (46 MB)
EW (1.44 GB)     Info
JPG (48 MB)
LP Z/EW (1.43 GB)     Info
JPG (46 MB)
Z/EW (1.43 GB)     Info
JPG (46 MB)
05/07 - 05/09 LP NS (1.41 GB)     Info
JPG (43 MB)
05/08 - 05/09 SP Z (1.47 GB)     Info
JPG (50 MB)
NS (1.41 GB)     Info
JPG (43 MB)
EW (1.41 GB)     Info
JPG (45 MB)
LP Z/EW (1.41 GB)     Info
JPG (42 MB)
Z/EW (1.41 GB)     Info
JPG (42 MB)
05/11 - 05/12 SP Z (1.5 GB)     Info
JPG (54 MB)
NS (1.42 GB)     Info
JPG (45 MB)
EW (1.44 GB)     Info
JPG (47 MB)
LP Z/EW (1.43 GB)     Info
JPG (46 MB)
Z/EW (1.43 GB)     Info
JPG (46 MB)
05/11 - 05/13 LP NS (1.43 GB)     Info
JPG (46 MB)
05/12 - 05/13 SP Z (1.54 GB)     Info
JPG (59 MB)
NS (1.43 GB)     Info
JPG (48 MB)
EW (1.44 GB)     Info
JPG (49 MB)
LP Z/EW (1.45 GB)     Info
JPG (48 MB)
Z/EW (1.45 GB)     Info
JPG (48 MB)
05/13 - 05/15 LP NS (1.41 GB)     Info
JPG (43 MB)
05/14 - 05/15 SP Z (1.53 GB)     Info
JPG (57 MB)
NS (1.44 GB)     Info
JPG (47 MB)
EW (1.45 GB)     Info
JPG (49 MB)
LP Z/EW (1.43 GB)     Info
JPG (45 MB)
Z/EW (1.43 GB)     Info
JPG (45 MB)
05/16 - 05/17 SP Z (1.42 GB)     Info
JPG (46 MB)
NS (1.44 GB)     Info
JPG (49 MB)
EW (1.46 GB)     Info
JPG (54 MB)
05/17 - 05/18 SP Z (1.42 GB)     Info
JPG (44 MB)
NS (1.44 GB)     Info
JPG (47 MB)
EW (1.44 GB)     Info
JPG (50 MB)
05/19 - 05/20 SP Z (1.48 GB)     Info
JPG (55 MB)
NS (1.42 GB)     Info
JPG (48 MB)
EW (1.42 GB)     Info
JPG (45 MB)
LP Z/EW (1.42 GB)     Info
JPG (46 MB)
Z/EW (1.42 GB)     Info
JPG (46 MB)
05/22 - 05/23 SP Z (1.5 GB)     Info
JPG (54 MB)
NS (1.43 GB)     Info
JPG (45 MB)
LP Z/EW (1.44 GB)     Info
JPG (46 MB)
Z/EW (1.44 GB)     Info
JPG (46 MB)
05/26 - 05/27 SP Z (1.49 GB)     Info
JPG (53 MB)
NS (1.43 GB)     Info
JPG (47 MB)
EW (1.43 GB)     Info
JPG (46 MB)
LP Z/EW (1.42 GB)     Info
JPG (44 MB)
Z/EW (1.42 GB)     Info
JPG (44 MB)
05/27 - 05/28 SP Z (1.49 GB)     Info
JPG (54 MB)
NS (1.43 GB)     Info
JPG (46 MB)
EW (1.43 GB)     Info
JPG (45 MB)
LP Z/EW (1.43 GB)     Info
JPG (44 MB)
Z/EW (1.43 GB)     Info
JPG (44 MB)
05/28 - 05/29 SP Z (1.5 GB)     Info
JPG (54 MB)
NS (1.43 GB)     Info
JPG (46 MB)
EW (1.44 GB)     Info
JPG (46 MB)
LP Z/EW (1.43 GB)     Info
JPG (44 MB)
Z/EW (1.43 GB)     Info
JPG (44 MB)
05/30 - 05/31 SP Z (1.54 GB)     Info
JPG (59 MB)
NS (1.44 GB)     Info
JPG (48 MB)
EW (1.46 GB)     Info
JPG (49 MB)
LP Z/EW (1.44 GB)     Info
JPG (47 MB)
Z/EW (1.44 GB)     Info
JPG (47 MB)
05/30 - 06/01 LP NS (1.41 GB)     Info
JPG (43 MB)

June

Date Instrument Components
05/30 - 06/01 LP NS (1.41 GB)     Info
JPG (43 MB)
06/01 - 06/02 SP Z (1.5 GB)     Info
JPG (55 MB)
NS (1.42 GB)     Info
JPG (44 MB)
EW (1.43 GB)     Info
JPG (44 MB)
06/04 - 06/05 SP Z (1.48 GB)     Info
JPG (52 MB)
NS (1.41 GB)     Info
JPG (44 MB)
EW (1.42 GB)     Info
JPG (45 MB)
LP Z/EW (1.41 GB)     Info
JPG (43 MB)
Z/EW (1.41 GB)     Info
JPG (43 MB)
06/04 - 06/06 LP NS (1.4 GB)     Info
JPG (43 MB)
06/07 - 06/08 SP Z (1.53 GB)     Info
JPG (60 MB)
NS (1.42 GB)     Info
JPG (49 MB)
EW (1.44 GB)     Info
JPG (50 MB)
06/10 - 06/11 SP Z (1.47 GB)     Info
JPG (53 MB)
NS (1.41 GB)     Info
JPG (44 MB)
EW (1.41 GB)     Info
JPG (45 MB)
LP Z/EW (1.42 GB)     Info
JPG (42 MB)
Z/EW (1.42 GB)     Info
JPG (42 MB)
06/10 - 06/12 LP NS (1.4 GB)     Info
JPG (42 MB)
06/14 - 06/15 SP Z (1.51 GB)     Info
JPG (55 MB)
NS (1.42 GB)     Info
JPG (45 MB)
EW (1.43 GB)     Info
JPG (46 MB)
LP Z/EW (1.41 GB)     Info
JPG (42 MB)
Z/EW (1.41 GB)     Info
JPG (42 MB)
06/14 - 06/16 LP NS (1.39 GB)     Info
JPG (42 MB)
06/15 - 06/16 SP Z (1.5 GB)     Info
JPG (56 MB)
NS (1.41 GB)     Info
JPG (46 MB)
EW (1.42 GB)     Info
JPG (47 MB)
LP Z/EW (1.41 GB)     Info
JPG (43 MB)
Z/EW (1.41 GB)     Info
JPG (43 MB)
06/17 - 06/18 SP Z (1.51 GB)     Info
JPG (56 MB)
NS (1.45 GB)     Info
JPG (47 MB)
EW (1.44 GB)     Info
JPG (48 MB)
06/19 - 06/20 SP Z (1.61 GB)     Info
JPG (53 MB)
NS (1.56 GB)     Info s1544_1938_0619_0620_sp_ns_f.jpg EW (1.55 GB)     Info
JPG (47 MB)
back info LP but most likely SP
06/20 - 06/21 SP Z (1.49 GB)     Info
JPG (54 MB)
NS (1.43 GB)     Info
JPG (48 MB)
EW (1.43 GB)     Info
JPG (47 MB)
LP Z/EW (1.42 GB)     Info
JPG (48 MB)
Z/EW (1.42 GB)     Info
JPG (48 MB)
06/20 - 06/22 LP NS (1.42 GB)     Info
JPG (45 MB)
06/21 - 06/22 SP Z (1.51 GB)     Info
JPG (61 MB)
NS (1.43 GB)     Info
JPG (47 MB)
EW (1.44 GB)     Info
JPG (47 MB)
06/22 - 06/23 SP Z (1.5 GB)     Info
JPG (56 MB)
NS (1.43 GB)     Info
JPG (46 MB)
EW (1.44 GB)     Info
JPG (47 MB)
LP Z/EW (1.42 GB)     Info
JPG (43 MB)
Z/EW (1.42 GB)     Info
JPG (43 MB)
06/22 - 06/24 LP NS (1.41 GB)     Info
JPG (45 MB)
06/23 - 06/24 SP Z (1.5 GB)     Info
JPG (55 MB)
NS (1.43 GB)     Info
JPG (46 MB)
EW (1.43 GB)     Info
JPG (46 MB)
LP Z/EW (1.42 GB)     Info
JPG (43 MB)
Z/EW (1.42 GB)     Info
JPG (43 MB)
06/24 - 06/26 LP NS (1.41 GB)     Info
JPG (44 MB)
06/25 - 06/26 SP Z (1.53 GB)     Info
JPG (59 MB)
NS (1.43 GB)     Info
JPG (49 MB)
EW (1.44 GB)     Info
JPG (50 MB)
LP Z/EW (1.42 GB)     Info
JPG (45 MB)
Z/EW (1.42 GB)     Info
JPG (45 MB)
06/28 - 06/29 SP Z (1.57 GB)     Info
JPG (64 MB)
NS (1.44 GB)     Info
JPG (51 MB)
EW (1.46 GB)     Info
JPG (53 MB)
LP Z/EW (1.44 GB)     Info
JPG (49 MB)
Z/EW (1.44 GB)     Info
JPG (49 MB)
06/28 - 06/30 LP NS (1.43 GB)     Info
JPG (48 MB)
06/30 - 07/01 SP Z (1.5 GB)     Info
JPG (58 MB)
NS (1.42 GB)     Info
JPG (48 MB)
EW (1.43 GB)     Info
JPG (50 MB)
LP Z/EW (1.41 GB)     Info
JPG (48 MB)
Z/EW (1.41 GB)     Info
JPG (48 MB)
06/30 - 07/02 LP NS (1.39 GB)     Info
JPG (44 MB)

July

Date Instrument Components
06/30 - 07/01 SP Z (1.5 GB)     Info
JPG (58 MB)
NS (1.42 GB)     Info
JPG (48 MB)
EW (1.43 GB)     Info
JPG (50 MB)
LP Z/EW (1.41 GB)     Info
JPG (48 MB)
Z/EW (1.41 GB)     Info
JPG (48 MB)
06/30 - 07/02 LP NS (1.39 GB)     Info
JPG (44 MB)
07/02 - 07/03 SP Z (1.51 GB)     Info
JPG (56 MB)
NS (1.41 GB)     Info
JPG (45 MB)
EW (1.43 GB)     Info
JPG (46 MB)
07/04 - 07/05 SP Z (1.49 GB)     Info
JPG (54 MB)
NS (1.42 GB)     Info
JPG (45 MB)
EW (1.43 GB)     Info
JPG (46 MB)
LP Z/EW (1.41 GB)     Info
JPG (43 MB)
Z/EW (1.41 GB)     Info
JPG (43 MB)
07/04 - 07/06 LP NS (1.41 GB)     Info
JPG (46 MB)
07/05 - 07/06 SP Z (1.51 GB)     Info
JPG (56 MB)
NS (1.42 GB)     Info
JPG (46 MB)
EW (1.44 GB)     Info
JPG (48 MB)
LP Z/EW (1.42 GB)     Info
JPG (47 MB)
Z/EW (1.42 GB)     Info
JPG (47 MB)
07/07 - 07/08 SP Z (1.49 GB)     Info
JPG (55 MB)
NS (1.42 GB)     Info
JPG (46 MB)
EW (1.43 GB)     Info
JPG (48 MB)
07/11 - 07/12 LP Z/EW (1.4 GB)     Info
JPG (45 MB)
Z/EW (1.4 GB)     Info
JPG (45 MB)
07/13 - 07/14 SP Z (1.49 GB)     Info
JPG (56 MB)
NS (1.42 GB)     Info
JPG (47 MB)
EW (1.41 GB)     Info
JPG (46 MB)
LP Z/EW (1.41 GB)     Info
JPG (50 MB)
Z/EW (1.41 GB)     Info
JPG (50 MB)
07/14 - 07/15 SP Z (1.53 GB)     Info
JPG (59 MB)
NS (1.43 GB)     Info
JPG (47 MB)
EW (1.43 GB)     Info
JPG (49 MB)
LP Z/EW (1.42 GB)     Info
JPG (46 MB)
Z/EW (1.42 GB)     Info
JPG (46 MB)
07/14 - 07/16 LP NS (1.4 GB)     Info
JPG (42 MB)
07/18 - 07/20 LP NS (1.39 GB)     Info
JPG (41 MB)
07/19 - 07/20 SP Z (1.49 GB)     Info
JPG (54 MB)
NS (1.44 GB)     Info
JPG (47 MB)
EW (1.41 GB)     Info
JPG (43 MB)
LP Z/EW (1.41 GB)     Info
JPG (43 MB)
Z/EW (1.41 GB)     Info
JPG (43 MB)
07/23 - 07/24 LP Z/EW (1.41 GB)     Info
JPG (44 MB)
Z/EW (1.41 GB)     Info
JPG (44 MB)
07/24 - 07/25 SP Z (1.5 GB)     Info
JPG (55 MB)
NS (1.44 GB)     Info
JPG (47 MB)
EW (1.43 GB)     Info
JPG (45 MB)
LP Z/EW (1.44 GB)     Info
JPG (50 MB)
Z/EW (1.44 GB)     Info
JPG (50 MB)
07/24 - 07/26 LP NS (1.42 GB)     Info
JPG (42 MB)
07/27 - 07/28 SP Z (1.52 GB)     Info
JPG (56 MB)
NS (1.46 GB)     Info
JPG (48 MB)
EW (1.45 GB)     Info
JPG (46 MB)
LP Z/EW (1.44 GB)     Info
JPG (46 MB)
Z/EW (1.44 GB)     Info
JPG (46 MB)
07/28 - 07/29 SP Z (1.51 GB)     Info
JPG (55 MB)
NS (1.45 GB)     Info
JPG (46 MB)
EW (1.44 GB)     Info
JPG (45 MB)
07/28 - 07/30 LP NS (1.42 GB)     Info
JPG (43 MB)
07/29 - 07/30 SP Z (1.52 GB)     Info
JPG (58 MB)
NS (1.44 GB)     Info
JPG (47 MB)
EW (1.42 GB)     Info
JPG (45 MB)
LP Z/EW (1.42 GB)     Info
JPG (43 MB)
Z/EW (1.42 GB)     Info
JPG (43 MB)

August

Date Instrument Components
08/02 - 08/03 SP Z (1.49 GB)     Info
JPG (54 MB)
NS (1.43 GB)     Info
JPG (46 MB)
EW (1.42 GB)     Info
JPG (46 MB)
08/03 - 08/04 SP Z (1.48 GB)     Info
JPG (52 MB)
NS (1.44 GB)     Info
JPG (46 MB)
EW (1.44 GB)     Info
JPG (47 MB)
LP Z/EW (1.43 GB)     Info
JPG (45 MB)
Z/EW (1.43 GB)     Info
JPG (45 MB)
08/03 - 08/05 LP NS (1.41 GB)     Info
JPG (43 MB)
08/06 - 08/07 SP Z (1.48 GB)     Info
JPG (50 MB)
NS (1.44 GB)     Info
JPG (42 MB)
EW (1.43 GB)     Info
JPG (42 MB)
08/07 - 08/08 SP Z (1.48 GB)     Info
JPG (50 MB)
NS (1.43 GB)     Info
JPG (43 MB)
EW (1.42 GB)     Info
JPG (44 MB)
08/07 - 08/09 LP NS (1.42 GB)     Info
JPG (43 MB)
08/08 - 08/09 LP Z/EW (1.44 GB)     Info
JPG (45 MB)
Z/EW (1.44 GB)     Info
JPG (45 MB)
08/09 - 08/10 SP Z (1.52 GB)     Info
JPG (55 MB)
NS (1.45 GB)     Info
JPG (46 MB)
EW (1.44 GB)     Info
JPG (46 MB)
08/14 - 08/15 SP Z (1.43 GB)     Info
JPG (45 MB)
NS (1.39 GB)     Info
JPG (40 MB)
EW (1.39 GB)     Info
JPG (40 MB)
08/15 - 08/16 SP Z (1.5 GB)     Info
JPG (57 MB)
NS (1.43 GB)     Info
JPG (47 MB)
EW (1.4 GB)     Info
JPG (44 MB)
LP Z/EW (1.43 GB)     Info
JPG (47 MB)
Z/EW (1.43 GB)     Info
JPG (47 MB)
08/15 - 08/17 LP NS (1.42 GB)     Info
JPG (45 MB)
08/17 SP Z (1.54 GB)     Info
JPG (57 MB)
NS (1.44 GB)     Info
JPG (46 MB)
08/17 - 08/18 SP Z (1.59 GB)     Info
JPG (67 MB)
NS (1.44 GB)     Info
JPG (50 MB)
EW (1.4 GB)     Info
JPG (45 MB)
LP Z/EW (1.42 GB)     Info
JPG (46 MB)
NS (1.41 GB)     Info
JPG (45 MB)
Z/EW (1.42 GB)     Info
JPG (46 MB)
08/18 - 08/19 SP Z (1.59 GB)     Info
JPG (66 MB)
08/18 - 08/20 LP NS (1.41 GB)     Info
JPG (45 MB)
08/19 - 08/20 SP Z (1.52 GB)     Info
JPG (58 MB)
LP Z/EW (1.41 GB)     Info
JPG (44 MB)
Z/EW (1.41 GB)     Info
JPG (44 MB)
08/20 - 08/21 SP Z (1.5 GB)     Info
JPG (54 MB)
EW (1.4 GB)     Info
JPG (42 MB)
LP Z/EW (1.42 GB)     Info
JPG (46 MB)
Z/EW (1.42 GB)     Info
JPG (46 MB)
08/20 - 08/22 LP NS (1.41 GB)     Info
JPG (45 MB)
08/24 - 08/25 SP Z (1.46 GB)     Info
JPG (50 MB)
NS (1.44 GB)     Info
JPG (51 MB)
EW (1.45 GB)     Info
JPG (52 MB)
LP Z/EW (1.45 GB)     Info
JPG (49 MB)
Z/EW (1.45 GB)     Info
JPG (49 MB)
08/24 - 08/26 LP NS (1.42 GB)     Info
JPG (48 MB)
08/27 - 08/28 SP Z (1.43 GB)     Info
JPG (48 MB)
NS (1.42 GB)     Info
JPG (47 MB)
EW (1.42 GB)     Info
JPG (47 MB)
08/28 - 08/30 LP NS (1.41 GB)     Info
JPG (49 MB)
08/29 - 08/30 SP Z (1.42 GB)     Info
JPG (45 MB)
NS (1.42 GB)     Info
JPG (48 MB)
EW (1.42 GB)     Info
JPG (45 MB)
LP Z/EW (1.41 GB)     Info
JPG (43 MB)
Z/EW (1.41 GB)     Info
JPG (43 MB)
08/30 - 08/31 SP Z (1.43 GB)     Info
JPG (45 MB)
NS (1.4 GB)     Info
JPG (41 MB)
EW (1.41 GB)     Info
JPG (44 MB)
LP Z/EW (1.4 GB)     Info
JPG (40 MB)
Z/EW (1.4 GB)     Info
JPG (40 MB)
08/30 - 09/01 LP NS (1.4 GB)     Info
JPG (43 MB)
08/31 - 09/01 SP Z (1.46 GB)     Info
JPG (51 MB)
NS (1.42 GB)     Info
JPG (46 MB)
EW (1.42 GB)     Info
JPG (48 MB)
LP Z/EW (1.4 GB)     Info
JPG (45 MB)
Z/EW (1.4 GB)     Info
JPG (45 MB)

September

Date Instrument Components
08/30 - 09/01 LP NS (1.4 GB)     Info
JPG (43 MB)
08/31 - 09/01 SP Z (1.46 GB)     Info
JPG (51 MB)
NS (1.42 GB)     Info
JPG (46 MB)
EW (1.42 GB)     Info
JPG (48 MB)
LP Z/EW (1.4 GB)     Info
JPG (45 MB)
Z/EW (1.4 GB)     Info
JPG (45 MB)
09/05 - 09/07 LP NS (1.43 GB)     Info
JPG (46 MB)
09/06 - 09/07 SP Z (1.45 GB)     Info
JPG (48 MB)
NS (1.42 GB)     Info
JPG (46 MB)
EW (1.44 GB)     Info
JPG (47 MB)
LP Z/EW (1.43 GB)     Info
JPG (46 MB)
Z/EW (1.43 GB)     Info
JPG (46 MB)
09/07 - 09/08 SP Z (1.46 GB)     Info
JPG (50 MB)
NS (1.44 GB)     Info
JPG (49 MB)
EW (1.45 GB)     Info
JPG (50 MB)
LP Z/EW (1.43 GB)     Info
JPG (47 MB)
Z/EW (1.43 GB)     Info
JPG (47 MB)
09/07 - 09/09 LP NS (1.44 GB)     Info
JPG (48 MB)
09/08 - 09/09 LP Z/EW (1.45 GB)     Info
JPG (49 MB)
Z/EW (1.45 GB)     Info
JPG (49 MB)
09/09 - 09/10 SP Z (1.43 GB)     Info
JPG (45 MB)
LP Z/EW (1.42 GB)     Info
JPG (45 MB)
Z/EW (1.42 GB)     Info
JPG (45 MB)
09/10 - 09/11 SP Z (1.43 GB)     Info
JPG (45 MB)
NS (1.42 GB)     Info
JPG (45 MB)
EW (1.43 GB)     Info
JPG (45 MB)
09/11 - 09/12 SP Z (1.44 GB)     Info
JPG (43 MB)
NS (1.45 GB)     Info
JPG (45 MB)
EW (1.44 GB)     Info
JPG (43 MB)
LP Z/EW (1.42 GB)     Info
JPG (45 MB)
Z/EW (1.42 GB)     Info
JPG (45 MB)
09/11 - 09/13 LP NS (1.41 GB)     Info
JPG (42 MB)
09/12 - 09/13 SP Z (1.45 GB)     Info
JPG (48 MB)
09/17 - 09/18 SP Z (1.47 GB)     Info
JPG (51 MB)
NS (1.43 GB)     Info
JPG (48 MB)
EW (1.45 GB)     Info
JPG (50 MB)
LP Z/EW (1.44 GB)     Info
JPG (47 MB)
Z/EW (1.44 GB)     Info
JPG (47 MB)
09/17 - 09/19 LP NS (1.43 GB)     Info
JPG (45 MB)
09/19 - 09/21 LP NS (1.43 GB)     Info
JPG (46 MB)
09/20 - 09/21 SP Z (1.48 GB)     Info
JPG (52 MB)
NS (1.43 GB)     Info
JPG (49 MB)
EW (1.45 GB)     Info
JPG (51 MB)
LP Z/EW (1.44 GB)     Info
JPG (49 MB)
Z/EW (1.44 GB)     Info
JPG (49 MB)
09/21 - 09/22 SP Z (1.41 GB)     Info
JPG (37 MB)
NS (1.4 GB)     Info
JPG (37 MB)
EW (1.4 GB)     Info
JPG (37 MB)
LP Z/EW (1.41 GB)     Info
JPG (37 MB)
NS (1.39 GB)     Info
JPG (34 MB)
Z/EW (1.41 GB)     Info
JPG (37 MB)
due to hurricane (the Great New England Hurricane), the station lost power and the seismometers were down until October 6th.

October

Date Instrument Components
10/08 - 10/10 LP NS (1.43 GB)     Info
JPG (47 MB)
10/09 - 10/10 SP Z (1.46 GB)     Info
JPG (53 MB)
NS (1.42 GB)     Info
JPG (46 MB)
EW (1.42 GB)     Info
JPG (48 MB)
LP Z/EW (1.45 GB)     Info
JPG (50 MB)
Z/EW (1.45 GB)     Info
JPG (50 MB)
10/10 - 10/11 SP Z (1.43 GB)     Info
JPG (50 MB)
NS (1.42 GB)     Info
JPG (44 MB)
EW (1.41 GB)     Info
JPG (49 MB)
LP Z/EW (1.42 GB)     Info
JPG (50 MB)
Z/EW (1.42 GB)     Info
JPG (50 MB)
10/10 - 10/12 LP NS (1.44 GB)     Info
JPG (50 MB)
10/11 - 10/12 SP Z (1.43 GB)     Info
JPG (48 MB)
NS (1.42 GB)     Info
JPG (45 MB)
EW (1.41 GB)     Info
JPG (45 MB)
LP Z/EW (1.44 GB)     Info
JPG (50 MB)
Z/EW (1.44 GB)     Info
JPG (50 MB)
10/16 - 10/18 LP NS (1.43 GB)     Info
JPG (46 MB)
10/17 - 10/18 SP Z (1.4 GB)     Info
JPG (38 MB)
Light burned out (short record)
NS (1.45 GB)     Info
JPG (47 MB)
EW (1.44 GB)     Info
JPG (48 MB)
LP Z/EW (1.44 GB)     Info
JPG (48 MB)
Z/EW (1.44 GB)     Info
JPG (48 MB)
10/18 - 10/19 SP NS (1.43 GB)     Info
JPG (46 MB)
EW (1.43 GB)     Info
JPG (47 MB)
LP Z/EW (1.44 GB)     Info
JPG (47 MB)
Z/EW (1.44 GB)     Info
JPG (47 MB)
10/20 - 10/21 SP Z (1.5 GB)     Info
JPG (54 MB)
NS (1.44 GB)     Info
JPG (48 MB)
EW (1.44 GB)     Info
JPG (49 MB)
10/28 - 10/30 LP NS (1.45 GB)     Info
JPG (51 MB)
10/29 - 10/30 SP Z (1.54 GB)     Info
JPG (62 MB)
NS (1.46 GB)     Info
JPG (53 MB)
EW (1.46 GB)     Info
JPG (53 MB)
LP Z/EW (1.47 GB)     Info
JPG (53 MB)
Z/EW (1.47 GB)     Info
JPG (53 MB)

November

Date Instrument Components
11/01 - 11/02 SP Z (1.47 GB)     Info
JPG (50 MB)
LP Z/EW (1.45 GB)     Info
JPG (48 MB)
Z/EW (1.45 GB)     Info
JPG (48 MB)
11/01 - 11/03 LP NS (1.43 GB)     Info
JPG (48 MB)
11/07 - 11/08 SP Z (1.47 GB)     Info
JPG (51 MB)
NS (1.42 GB)     Info
JPG (47 MB)
EW (1.44 GB)     Info
JPG (48 MB)
LP Z/EW (1.44 GB)     Info
JPG (46 MB)
Z/EW (1.44 GB)     Info
JPG (46 MB)
11/11 SP Z (1.43 GB)     Info
JPG (40 MB)
11/11 - 11/13 LP NS (1.41 GB)     Info
JPG (43 MB)
11/12 - 11/13 SP Z (1.44 GB)     Info
JPG (47 MB)
NS (1.44 GB)     Info
JPG (48 MB)
EW (1.43 GB)     Info
JPG (47 MB)
LP Z/EW (1.41 GB)     Info
JPG (41 MB)
Z/EW (1.41 GB)     Info
JPG (41 MB)
11/13 - 11/14 SP Z (1.54 GB)     Info
JPG (59 MB)
NS (1.45 GB)     Info
JPG (51 MB)
EW (1.48 GB)     Info
JPG (54 MB)
LP Z/EW (1.45 GB)     Info
JPG (49 MB)
Z/EW (1.45 GB)     Info
JPG (49 MB)
11/13 - 11/15 LP NS (1.46 GB)     Info
JPG (50 MB)   SAC (5 MB)
11/15 - 11/16 SP Z (1.48 GB)     Info
JPG (52 MB)
NS (1.46 GB)     Info
JPG (51 MB)
EW (1.44 GB)     Info
JPG (50 MB)
LP Z/EW (1.43 GB)     Info
JPG (45 MB)
Z/EW (1.43 GB)     Info
JPG (45 MB)
11/18 - 11/19 SP Z (1.52 GB)     Info
JPG (58 MB)
NS (1.45 GB)     Info
JPG (50 MB)
EW (1.47 GB)     Info
JPG (54 MB)
LP Z/EW (1.45 GB)     Info
JPG (49 MB)
Z/EW (1.45 GB)     Info
JPG (49 MB)
11/20 - 11/22 LP NS (1.46 GB)     Info
JPG (49 MB)
11/21 - 11/22 SP Z (1.49 GB)     Info
JPG (53 MB)
NS (1.44 GB)     Info
JPG (48 MB)
EW (1.46 GB)     Info
JPG (50 MB)
LP Z/EW (1.44 GB)     Info
JPG (47 MB)
Z/EW (1.44 GB)     Info
JPG (47 MB)
11/28 - 11/30 LP NS (1.5 GB)     Info
JPG (53 MB)
11/29 - 11/30 SP Z (1.53 GB)     Info
JPG (57 MB)
NS (1.46 GB)     Info
JPG (51 MB)
EW (1.49 GB)     Info
JPG (56 MB)
LP Z/EW (1.5 GB)     Info
JPG (54 MB)
Z/EW (1.5 GB)     Info
JPG (54 MB)
11/30 - 12/02 LP NS (1.47 GB)     Info
JPG (50 MB)

December

Date Instrument Components
11/30 - 12/02 LP NS (1.47 GB)     Info
JPG (50 MB)
12/01 - 12/02 SP Z (1.54 GB)     Info
JPG (59 MB)
NS (1.46 GB)     Info
JPG (52 MB)
EW (1.5 GB)     Info
JPG (53 MB)
LP Z/EW (1.5 GB)     Info
JPG (54 MB)
Z/EW (1.5 GB)     Info
JPG (54 MB)
12/08 - 12/09 SP Z (1.49 GB)     Info
JPG (53 MB)
NS (1.43 GB)     Info
JPG (49 MB)
EW (1.47 GB)     Info
JPG (50 MB)
LP Z/EW (1.47 GB)     Info
JPG (50 MB)
Z/EW (1.47 GB)     Info
JPG (50 MB)
12/08 - 12/10 LP NS (1.48 GB)     Info
JPG (52 MB)
12/16 - 12/17 SP Z (1.46 GB)     Info
JPG (50 MB)
NS (1.42 GB)     Info
JPG (48 MB)
EW (1.45 GB)     Info
JPG (48 MB)
LP Z/EW (1.47 GB)     Info
JPG (54 MB)
Z/EW (1.47 GB)     Info
JPG (54 MB)
12/16 - 12/18 LP NS (1.46 GB)     Info
JPG (51 MB)
12/18 - 12/20 LP NS (1.45 GB)     Info
JPG (48 MB)
12/19 - 12/20 SP Z (1.5 GB)     Info
JPG (55 MB)
NS (1.44 GB)     Info
JPG (51 MB)
EW (1.45 GB)     Info
JPG (48 MB)
LP Z/EW (1.45 GB)     Info
JPG (50 MB)
Z/EW (1.45 GB)     Info
JPG (50 MB)
12/20 - 12/21 SP Z (1.51 GB)     Info
JPG (58 MB)
NS (1.44 GB)     Info
JPG (50 MB)
EW (1.48 GB)     Info
JPG (50 MB)
LP Z/EW (1.49 GB)     Info
JPG (53 MB)
Z/EW (1.49 GB)     Info
JPG (53 MB)
12/20 - 12/22 LP NS (1.46 GB)     Info
JPG (49 MB)
12/27 - 12/28 SP Z (1.57 GB)     Info
JPG (62 MB)
NS (1.48 GB)     Info
JPG (55 MB)
EW (1.5 GB)     Info
JPG (53 MB)

Date
Dates are given as "m1/d1 - m2/d2" where m1 is the starting month, d1 is the starting day, m2 is the ending month, and d2 is the ending day. For the exact time of the start and end of the record, download the information (back side of seismogram) file that accompanies each seismogram file.
Typically, each recording covers about one day except for some single-component long-period recordings that cover two days.

Instrument
The instrument type is either "SP" for short-period recording and "LP" for long-period recording.

Components
The components are "Z" for vertical, "NS" for north-south, and "EW" for east-west. Some of the long-period recordings have two components, e.g., "Z/EW". The "Z/EW" entries are repeated in the first and third columns under "Components" and they are identical copies.
Original Images: The link to each component, e.g., Z, allows the original TIFF image of the seismic recording to be downloaded (1200 dpi in colour for front, 400 dpi in grey for back). Note that the size of the file given in brackets can be large and may take a while to download. The image of the back side of each recording (often showing more detailed information about the recording such as the start and end times) can be obtained from the "Info" link. The information files are typically 60 MB.
Reduced Images: The link to "JPG" provides images that have been converted to JPEG format with some flattening applied. The file sizes are much smaller, and these should be used for initial input for DigitSeis.
Digitized Time Series: The link to "SAC" can be used to download a zip file containing all SAC files associated with the specific image. There are typically multiple SAC files in the zip file, and each SAC file corresponds to a line of recording (e.g., about 1 hour for long-period recordings). They have been generated with the DigitSeis software, and some SAC files contain NaN entries, resulting in a blank screen when they are loaded and visualized in SAC software. One can work around this problem by setting the vertical axis to be between -200 and 200 (i.e., "ylim -200 200") and then adjusting the limits for the specific trace.


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Department of Earth and Planetary Sciences / Harvard University / 20 Oxford Street / Cambridge / MA 02138 / U.S.A. / Telephone: +1 617 495 2350 / Fax: +1 617 496 1907 / Email: reilly@eps.hartvard.edu