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Title: New approach of determinations of earthquake moment magnitude using near earthquake source duration and maximum displacement amplitude of high frequency energy radiation

Abstract

The new approach method to determine the magnitude by using amplitude displacement relationship (A), epicenter distance ({Delta}) and duration of high frequency radiation (t) has been investigated for Tasikmalaya earthquake, on September 2, 2009, and their aftershock. Moment magnitude scale commonly used seismic surface waves with the teleseismic range of the period is greater than 200 seconds or a moment magnitude of the P wave using teleseismic seismogram data and the range of 10-60 seconds. In this research techniques have been developed a new approach to determine the displacement amplitude and duration of high frequency radiation using near earthquake. Determination of the duration of high frequency using half of period of P waves on the seismograms displacement. This is due tothe very complex rupture process in the near earthquake. Seismic data of the P wave mixing with other wave (S wave) before the duration runs out, so it is difficult to separate or determined the final of P-wave. Application of the 68 earthquakes recorded by station of CISI, Garut West Java, the following relationship is obtained: Mw = 0.78 log (A) + 0.83 log {Delta}+ 0.69 log (t) + 6.46 with: A (m), d (km) and t (second). Moment magnitudemore » of this new approach is quite reliable, time processing faster so useful for early warning.« less

Authors:
; ; ;  [1];  [2]
  1. ITB, Faculty of Earth Sciences and Tecnology (Indonesia)
  2. (Indonesia)
Publication Date:
OSTI Identifier:
22068972
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 1454; Journal Issue: 1; Conference: ICPAP 2011: International conference on physics and its applications, Bandung (Indonesia), 10-11 Nov 2011; Other Information: (c) 2012 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
58 GEOSCIENCES; AFTERSHOCKS; DISTANCE; EARTHQUAKES; EPICENTERS; FORECASTING; RUPTURES; SEISMIC P WAVES; SEISMIC S WAVES; SEISMIC SURFACE WAVES

Citation Formats

Gunawan, H., Puspito, N. T., Ibrahim, G., Harjadi, P. J. P., and BMKG. New approach of determinations of earthquake moment magnitude using near earthquake source duration and maximum displacement amplitude of high frequency energy radiation. United States: N. p., 2012. Web. doi:10.1063/1.4730706.
Gunawan, H., Puspito, N. T., Ibrahim, G., Harjadi, P. J. P., & BMKG. New approach of determinations of earthquake moment magnitude using near earthquake source duration and maximum displacement amplitude of high frequency energy radiation. United States. doi:10.1063/1.4730706.
Gunawan, H., Puspito, N. T., Ibrahim, G., Harjadi, P. J. P., and BMKG. Wed . "New approach of determinations of earthquake moment magnitude using near earthquake source duration and maximum displacement amplitude of high frequency energy radiation". United States. doi:10.1063/1.4730706.
@article{osti_22068972,
title = {New approach of determinations of earthquake moment magnitude using near earthquake source duration and maximum displacement amplitude of high frequency energy radiation},
author = {Gunawan, H. and Puspito, N. T. and Ibrahim, G. and Harjadi, P. J. P. and BMKG},
abstractNote = {The new approach method to determine the magnitude by using amplitude displacement relationship (A), epicenter distance ({Delta}) and duration of high frequency radiation (t) has been investigated for Tasikmalaya earthquake, on September 2, 2009, and their aftershock. Moment magnitude scale commonly used seismic surface waves with the teleseismic range of the period is greater than 200 seconds or a moment magnitude of the P wave using teleseismic seismogram data and the range of 10-60 seconds. In this research techniques have been developed a new approach to determine the displacement amplitude and duration of high frequency radiation using near earthquake. Determination of the duration of high frequency using half of period of P waves on the seismograms displacement. This is due tothe very complex rupture process in the near earthquake. Seismic data of the P wave mixing with other wave (S wave) before the duration runs out, so it is difficult to separate or determined the final of P-wave. Application of the 68 earthquakes recorded by station of CISI, Garut West Java, the following relationship is obtained: Mw = 0.78 log (A) + 0.83 log {Delta}+ 0.69 log (t) + 6.46 with: A (m), d (km) and t (second). Moment magnitude of this new approach is quite reliable, time processing faster so useful for early warning.},
doi = {10.1063/1.4730706},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 1454,
place = {United States},
year = {2012},
month = {6}
}