Characteristics of the Wiechert horizontal astatic seismograph (14000-20000 kg) at Jena

 
 

Component	Mass (kg)	Tp	Vo	Damp.	From	To	Source
E-W,N-S	15000	1.4	2200	2.6	1927 04 01	-
E-W	15000	1.4	2200	3.5	1927 10 08	-
E-W	15000	1.4	2200	3.5	1928 01 01	-
E-W	15000	1.4	2200	2.5	1929 01 13	-
E-W	15000	1.4	2200	3.5	1929 03 15	-
E-W	15000	1.4	2200	3.4	1929 07 05	-
E-W	15000	1.4	2200	3.6	1929 10 05	-
E-W	15000	1.4	2200	3.7	1930 01 01	1930 03 31
E-W	15000	1.3	2200	4.0	1930 04 01	1930 06 30
E-W	15000	1.3	2200	3.5	1930 07 01	1930 09 30
E-W	15000	1.3	2200	3.6	1930 10 01	1930 12 31
E-W	15000	1.3	2200	3.2	1934 01 01	1934 03 31
E-W	15000	1.3	2200	3.2	1934 04 01	1934 06 30
E-W	15000	1.4	2200	3.4	1934 07 01	1934 09 30
E-W	15000	1.3	2200	3.4	1934 10 01	1934 12 31
E-W	15000	1.3	2200	3.8	1935 01 01	1935 03 31
E-W	15000	1.3	2200	3.2	1935 04 01	1935 06 30
E-W	15000	1.3	2200	3.5	1935 07 01	1935 09 30
E-W,N-S	15000	1.4,2.1	2200,2200	3.4,4.8	1935 10 01	1935 12 31
E-W,N-S	15000	1.3,2.1	2200,2200	6.5,4.5	1937 01 01	1937 03 31
E-W,N-S	15000	,2.1	,2200	,6.2	1937 04 01	1937 06 30
E-W,N-S	15000	2.1,2.05	2200,2200	9.2,9.7	1937 07 01	1937 09 30
E-W,N-S	15000	2.1,2.1	2200,2200	6.4,10.0	1937 10 01	1937 12 31
E-W,N-S	15000	2.05,2.1	2200,2200	5.8,7.6	1938 01 01	1938 03 31
E-W,N-S	15000	2.1,2.05	2200,2200	5.9,7.6	1938 04 01	1938 06 30
E-W,N-S	15000	2.1,2.1	2200,2200	7.4,8.0	1938 07 01	1938 09 30
E-W,N-S	15000	2.2,2.1	2200,2200	6.8,7.7	1938 10 01	1938 12 31
E-W,N-S	15000	2.1,2.1	2200,2200	7.5,6.0	1939 01 01	1939 03 31
E-W,N-S	15000	2.0,2.1	2200,2200	7.2,5.5	1939 03 31	1939 06 30
E-W,N-S	15000	2.1,2.1	2200,2200	7.2,6.5	1939 07 01	1939 09 30
E-W,N-S	15000	2.0,2.1	2200,2200	6.9,6.6	1939 10 01	1939 12 31
E-W,N-S	15000	2.1,2.1	2200,2200	5.8,7.2	1948 01 01	1948 03 31
E-W,N-S	15000	2.1,2.1	2200,2200	5.8,7.2	1948 01 01	1948 03 31
E-W,N-S	15000	2.1,2.1	2200,2200	6.2,6.6	1948 03 31	1948 06 30
E-W,N-S	15000	2.1,2.1	2200,2200	6.2,6.6	1948 03 31	1948 06 30
E-W,N-S	15000	2.1,2.1	2200,2200	5.8,6.2	1948 07 01	1948 09 30
E-W,N-S	15000	2.1,2.1	2200,2200	5.8,6.2	1948 07 01	1948 09 30
E-W,N-S	15000	2.1,2.1	2200,2200	5.2,6.2	1948 10 01	1948 12 31
E-W,N-S	15000	2.1,2.1	2200,2200	5.2,6.2	1948 10 01	1948 12 31
E-W,N-S	15000	2.1,2.1	2200,2200	5.2,7.2	1949 01 01	1949 03 31
E-W,N-S	15000	2.1,2.1	2200,2200	5.2,7.2	1949 01 01	1949 03 31
E-W,N-S	15000	2.1,2.1	2200,2200	5.6,6.6	1949 03 31	1949 06 30
E-W,N-S	15000	2.1,2.1	2200,2200	5.6,6.6	1949 03 31	1949 06 30
E-W,N-S	15000	2.1,2.1	2200,2200	6.2,7.8	1949 07 01	1949 09 30
E-W,N-S	15000	2.1,2.1	2200,2200	6.2,7.8	1949 07 01	1949 09 30
E-W,N-S	15000	2.1,2.1	2200,2200	5.2,7.8	1949 10 01	1949 12 31
E-W,N-S	15000	2.1,2.1	2200,2200	5.2,7.8	1949 10 01	1949 12 31