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323073

Determination of the Earthquake Source Parameters in the Aswan Area, Egypt

Article

Last updated: 28 Dec 2024

Subjects

-

Tags

Applied and Basic Science.

Abstract

The Aswan region is seismically active, according to Egypt's seismotectonic studies. This region served as the epicenter of the November 14, 1981, ML, 5.5 earthquake that seriously destroyed Aswan and the neighborhood. The source parameters of Aswan earthquakes that occurred between 2014 and 2018 and had ML magnitudes of 2.8 to 3.9 are identified in this study using spectral inversion. To construct the spectrum analysis code, the authors acquired the seismic analysis code (SAC) and MATLAB. We determined the source parameters (seismic moment, static stress drop, and source radius) and their scaling relations using the displacement source spectra from P-waves. If the activities in this area are technically created or caused by the Nasser Lake, it can be determined by a comparison with regional cases using stress reduction. The main conclusion is that the source radius ranges from (407-790) m, the corner frequencies of the examined events range from (3.6-6.9) Hz, stress decrease, and (0.04-6.7) bar, and the seismic moment ranges from (3.22E+19-2.88E+21) dyne-cm. These results are mostly in agreement with earlier studies done in the same seismic zone. Although the anticipated stress declines are not depth-dependent, they can occasionally be greater where the N-S and E-W trend fault systems converge.  However, reservoir-induced activity might have a low stress drop when compared to earthquakes with tectonic origins.

DOI

10.21608/bjas.2020.323073

Keywords

Aswan, seismicity, source parameters, seismic moment and stress drop

Authors

First Name

M.

Last Name

Salem

MiddleName

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Affiliation

National Research Institute of Astronomy and Geophysics

Email

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City

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Orcid

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First Name

E.M

Last Name

El-Amin

MiddleName

-

Affiliation

National Research Institute of Astronomy and Geophysics

Email

-

City

-

Orcid

-

First Name

H.

Last Name

Zahra

MiddleName

-

Affiliation

Geology Department, Faculty of Science, Benha University

Email

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City

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Orcid

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First Name

I.

Last Name

Abu El Nader

MiddleName

-

Affiliation

National Research Institute of Astronomy and Geophysics

Email

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City

-

Orcid

-

First Name

H.

Last Name

Lofty

MiddleName

-

Affiliation

National Research Institute of Astronomy and Geophysics

Email

-

City

-

Orcid

-

Volume

5

Article Issue

Issue 7 part (1) - (2)

Related Issue

20337

Issue Date

2020-10-01

Receive Date

2020-07-05

Publish Date

2020-08-01

Page Start

269

Page End

289

Print ISSN

2356-9751

Online ISSN

2356-976X

Link

https://bjas.journals.ekb.eg/article_323073.html

Detail API

https://bjas.journals.ekb.eg/service?article_code=323073

Order

38

Type

Original Research Papers

Type Code

1,647

Publication Type

Journal

Publication Title

Benha Journal of Applied Sciences

Publication Link

https://bjas.journals.ekb.eg/

MainTitle

Determination of the Earthquake Source Parameters in the Aswan Area, Egypt

Details

Type

Article

Created At

28 Dec 2024