A FREQUENCY-BASED PARAMETER FOR RAPID ESTIMATION OF MAGNITUDE

Q: How can I download an article?

To download an article from SID, first log in to the site, search for the article title, and click on the 'Download Article' option.

Q: How can I download an ISI article?

To download an ISI article on SID, enter the keyword or article title in the search bar, view the relevant results, click on the desired article, and select the 'Download Article' option.

Q: How can I access the SID database?

To access the SID database, visit SID.ir, create an account, and log in to access scientific resources.

Q: Is downloading articles from SID free?

Some articles on SID are available for free, while others require payment. Details are specified on the article's page.

ATEFI SANAM; HEIDARI REZA; MIRZAEI NOORBAKHSH; SIAHKOOHI HAMID REZA

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

Journal Paper

Paper Information

Journal: JOURNAL OF THEORETICAL AND APPLIED PHYSICS (IRANIAN PHYSICAL JOURNAL) Year:2017 | Volume:11 | Issue:4 Page(s): 319-324

Download Full-Text

View:

287

Download:

312

Cites:

Information Journal Paper

Title

A FREQUENCY-BASED PARAMETER FOR RAPID ESTIMATION OF MAGNITUDE

Author(s)

ATEFI SANAM | HEIDARI REZA | MIRZAEI NOORBAKHSH | SIAHKOOHI HAMID REZA | Issue Writer Certificate

Keywords

EARLY WARNING SYSTEMS

CONTINUOUS WAVELET TRANSFORM

MAGNITUDE ESTIMATION RELATION

Abstract

This study introduce a new frequency parameter calledsfcwt, which can be used to estimate earthquake magnitude on the basis of the first few seconds of P-waves, using the waveforms of earthquakes occurring in Japan. This new parameter is introduced using CONTINUOUS WAVELET TRANSFORM as a tool for extracting the frequency contents carried by the first few seconds of P-wave.The empirical relationship between the logarithm of tfcwt within the initial 4 s of a waveformand magnitude was obtained. To evaluate the precision of tfcwt, we also calculated parameters tpmax and tc. The average absolute values of observed and estimated magnitude differences (½Mest -Mobs½) were 0.43, 0.49, and 0.66 units of magnitude, as determined using tpmax, tc, and tfcwt, respectively. For earthquakes with magnitudes greater than 6, these values were 0.34, 0.56, and 0.44 units of magnitude, as derived using tpmax, tc, and tfcwt, respectively. The tfcwt parameter exhibited more precision in determining the magnitude of moderate- and small-scale earthquakes than did the tc-based approach. For a general range of magnitudes, however, the tpmax -based method showed more acceptable precision than did the other two parameters.

Multimedia

No record.

Cites

No record.

References

No record.

Cite

APA: Copy

ATEFI, SANAM, HEIDARI, REZA, MIRZAEI, NOORBAKHSH, & SIAHKOOHI, HAMID REZA. (2017). A FREQUENCY-BASED PARAMETER FOR RAPID ESTIMATION OF MAGNITUDE. JOURNAL OF THEORETICAL AND APPLIED PHYSICS (IRANIAN PHYSICAL JOURNAL), 11(4), 319-324. SID. https://sid.ir/paper/318941/en

Vancouver: Copy

ATEFI SANAM, HEIDARI REZA, MIRZAEI NOORBAKHSH, SIAHKOOHI HAMID REZA. A FREQUENCY-BASED PARAMETER FOR RAPID ESTIMATION OF MAGNITUDE. JOURNAL OF THEORETICAL AND APPLIED PHYSICS (IRANIAN PHYSICAL JOURNAL)[Internet]. 2017;11(4):319-324. Available from: https://sid.ir/paper/318941/en

IEEE: Copy

SANAM ATEFI, REZA HEIDARI, NOORBAKHSH MIRZAEI, and HAMID REZA SIAHKOOHI, “A FREQUENCY-BASED PARAMETER FOR RAPID ESTIMATION OF MAGNITUDE,” JOURNAL OF THEORETICAL AND APPLIED PHYSICS (IRANIAN PHYSICAL JOURNAL), vol. 11, no. 4, pp. 319–324, 2017, [Online]. Available: https://sid.ir/paper/318941/en

Related Journal Papers

No record.

Related Seminar Papers

No record.

Related Plans

No record.

Recommended Workshops