ATTENUATION RELATIONSHIPS OF SEISMIC INTENSITY IN IRAN

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.

MORID S.; GOSAIN A.K.; KESHARI A.K.

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

Journal Paper

Paper Information

Journal: Journal of the Earth and Space Physics Year:2004 | Volume:30 | Issue:1 Page(s): 1-9

Download Full-Text

Persian Verion

View:

1,557

Download:

Cites:

Information Journal Paper

Title

ATTENUATION RELATIONSHIPS OF SEISMIC INTENSITY IN IRAN

Author(s)

MORID S. | GOSAIN A.K. | KESHARI A.K.

Keywords

SEISMIC INTENSITYQ2

ATTENUATION RELATIONSHIPSQ2

ISOSEISMAL MAPQ2

EPICENTRAL DISTANCEQ2

IRANQ2

Abstract

The ISOSEISMAL MAPs for 22 earthquakes in different regions of IRAN were analyzed to study the attenuation of SEISMIC INTENSITY with the distance from the epicentre under a certain surface wave magnitude (Ms). The ATTENUATION RELATIONSHIPS were derived by using an iterative least squares fit procedure. These equations were derived from more basic concepts assuming that the intensity is proportional to the logarithm of seismic energy density at any location empirically. The ISOSEISMAL MAPs are elongated in the direction of local structural trend of causative faults. Therefore, ATTENUATION RELATIONSHIPS for the main direction of fault, transverse to it and average attenuation were derived. Ia = 11. 564 + 0. 943 M − 2. 508 Ln(Ra + 33) , , , , ,σ = 0. 79 , , , , , ,Ra <, 200 km along the main direction of fault Ib = 9. 469 + 0. 717 M − 2. 121 Ln(Rb +13) , , , , , ,σ = 0. 49 , , , , ,Rb<, 140 km transverse to the main direction of fault I =11. 926 + 0. 831 M − 2. 7 Ln(R + 22) , , , , , , , ,σ = 0. 49 , , , , , , , ,R<, 167 km average attenuation Where M is the surface wave magnitude and I is the intensity at a distance R (km) from the epicenter. The attenuation of SEISMIC INTENSITY in IRAN is faster than the East and West of China and Sicily and Calabria in Italy, apart from different tectonic characteristics of these regions.

Multimedia

No record.

Cites

No record.

References

گزارش مقدماتی - فوری زمین لرزه 16 بهمن 1375 گرمخان (شمال بجنورد)

Cite

APA: Copy

MORID, S., GOSAIN, A.K., & KESHARI, A.K.. (2004). RESPONSE OF DIFFERENT SNOWMELT ALGORITHMS TO SYNTHESIZED CLIMATIC DATA FOR RUNOFF SIMULATION. JOURNAL OF THE EARTH AND SPACE PHYSICS, 30(1), 1-9. SID. https://sid.ir/paper/80509/en

Vancouver: Copy

MORID S., GOSAIN A.K., KESHARI A.K.. RESPONSE OF DIFFERENT SNOWMELT ALGORITHMS TO SYNTHESIZED CLIMATIC DATA FOR RUNOFF SIMULATION. JOURNAL OF THE EARTH AND SPACE PHYSICS[Internet]. 2004;30(1):1-9. Available from: https://sid.ir/paper/80509/en

IEEE: Copy

S. MORID, A.K. GOSAIN, and A.K. KESHARI, “RESPONSE OF DIFFERENT SNOWMELT ALGORITHMS TO SYNTHESIZED CLIMATIC DATA FOR RUNOFF SIMULATION,” JOURNAL OF THE EARTH AND SPACE PHYSICS, vol. 30, no. 1, pp. 1–9, 2004, [Online]. Available: https://sid.ir/paper/80509/en

Related Journal Papers