Temporal distribution of strong high frequency energy radiation inferred from far-field broadband records

Details Temporal distribution of strong high frequency energy radiation inferred from far-field broadband records Temporal distribution of strong high frequency energy radiation inferred from far-field broadband records

Dec 2007

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2007agufm.s53d..05h&link_type=abstract

American Geophysical Union, Fall Meeting 2007, abstract #S53D-05

Physics

3270 Time Series Analysis (1872, 4277, 4475), 7203 Body Waves

Scientific paper

Recently, we developed a new method to determine earthquake magnitudes using durations of high frequency energy radiation and the maximum displacement amplitudes measured from processing of first arriving P-waves (Hara, 2007a. Earth Planets Space, 59, 227-231; Hara, 2007b. Earth Planets Space, 59, 561-565). In this technique, the difference between P arrival time and the time when the amplitude of high bandpass (2-4 Hz) filtered seismogram becomes the largest is used to set width of moving window for smoothing time series. In this study, we measured these differences for large shallow earthquakes that occurred between 1995-2007. We normalized them by centroid time shifts to find the low frequency in the range of 0-20 % and the high frequency around 50 %. This result supports the effectiveness of the measurement procedure of duration of the high frequency energy radiation of Hara (2007a, b). We also applied our measurement procedure to the January 15, 1993 Kushiro-Oki, July 12, 1993 Hokkaido-Nansei-Oki, and December 28, 1994 far east off Sanriku earthquakes. We compared the measured time differences to the results of inversion of strong motion records to find the qualitative agreement between them.

Affiliated with

Also associated with

No associations

Rating

Temporal distribution of strong high frequency energy radiation inferred from far-field broadband records does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Temporal distribution of strong high frequency energy radiation inferred from far-field broadband records, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Temporal distribution of strong high frequency energy radiation inferred from far-field broadband records will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-1408531