The Nature of Ocular Microtremor and the Normal Record

2009 ◽  
Author(s):  
James P. Ryle ◽  
Mohammed Al-Kalbani ◽  
Unnikrishnan Gopinathan ◽  
Gerard Boyle ◽  
Davis Coakley ◽  
...  

1999 ◽  
Vol 39 (11) ◽  
pp. 1911-1915 ◽  
Author(s):  
Ciaran Bolger ◽  
Stana Bojanic ◽  
Noirin F. Sheahan ◽  
Davis Coakley ◽  
James F. Malone

1969 ◽  
Vol 59 (5) ◽  
pp. 1863-1887
Author(s):  
James H. Whitcomb

abstract Array data processing is applied to long-period records of S waves at a network of five Fennoscandian seismograph stations (Uppsala, Umeå, Nurmijärvi, Kongsberg, Copenhagen) with a maximum separation of 1300 km. Records of five earthquakes and one underground explosion are included in the study. The S motion is resolved into SH and SV, and after appropriate time shifts the individual traces are summed, both directly and after weighting. In general, high signal correlation exists among the different stations involved resulting in more accurate time readings, especially for records which have amplitudes that are too small to be read normally. S-wave station residuals correlate with the general crustal type under each station. In addition, the Fennoscandian shield may have a higher SH/SV velocity ratio than the adjacent tectonic area to the northwest.SV-to-P conversion at the base of the crust can seriously interfere with picking the onset of Sin normal record reading. The study demonstrates that, for epicentral distances beyond about 30°, existing networks of seismograph stations can be successfully used for array processing of long-period arrivals, especially the S arrivals.


2014 ◽  
Vol 45 (10) ◽  
pp. 3670-3682 ◽  
Author(s):  
N. Balakrishnan ◽  
H. Y. So ◽  
X. J. Zhu
Keyword(s):  

1999 ◽  
Vol 19 (1) ◽  
pp. 42???45 ◽  
Author(s):  
Ciaran Bolger ◽  
Stana Bojanic ◽  
Noirin F. Sheahan ◽  
Davis Coakley ◽  
James F. Malone

1994 ◽  
Vol 15 (1) ◽  
pp. 101-106 ◽  
Author(s):  
N F Sheahan ◽  
D Coakley ◽  
C Bolger ◽  
D O'Neill ◽  
G Fry ◽  
...  
Keyword(s):  

Sign in / Sign up

Export Citation Format

Share Document