Probability of magnitude detection for the seismological network of Oman
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S. I. GSF 2018
Probability of magnitude detection for the seismological network of Oman Issa El-Hussain 1 & Mohamed Ezzelarab 1,2 Adel Mohamed El-Shahat Mohamed 1,2
&
Mahmoud Sami Soliman 2 & Ahmed Deif 1 &
Received: 13 February 2020 / Accepted: 2 September 2020 # Saudi Society for Geosciences 2020
Abstract The current work aims to evaluate the probability of magnitude detection in the Sultanate of Oman, adopting the probabilitybased magnitude of completeness method. The spatial configuration of the seismic network in addition to the recorded phases and the applied magnitude equation are required for implementation of the method. Therefore, the history of the Oman Seismological Network and the up-to-date configuration of seismic stations were documented. The analysis is done based on a unified magnitude earthquake database for all recorded events since November 2013 until April 2018. The probability of detection is computed for each seismic station, and then synthesized maps of the detection probability of an event with specific magnitude were developed. These maps show that Oman Seismological Network is able to record small earthquakes occurring close to inhabitant areas. The probability of completeness magnitude map is presented and indicates that most earthquakes generated within the territory of the Sultanate with magnitude equal to or greater than ML 2.5 are completely recorded since 2013. Moreover, all earthquakes with magnitude ML 3.5 initiated from the potential seismic sources in and around Oman are efficiently recorded by the Oman Seismological Network. Nevertheless, the results showed that additional seismic stations should be installed to enhance the detectability of man-made and small natural earthquakes at specific areas in the Sultanate of Oman. Keywords Oman Seismological Network . The probability of magnitude detection . Magnitude detection probability maps . Completeness magnitude map
This article is part of the Topical Collection on Seismic and Earthquake Engineering Studies in the Arabian Plate and the Surrounding Region Responsible Editor: Issa El-Hussain, Ahmed Deif, Rengin Gok, Keith Nakanishi * Mohamed Ezzelarab [email protected]; [email protected] Issa El-Hussain [email protected] Mahmoud Sami Soliman [email protected] Ahmed Deif [email protected] Adel Mohamed El-Shahat Mohamed [email protected] 1
Earthquake Monitoring Center, Sultan Qaboos University, Muscat, Sultanate of Oman
2
National Research Institute of Astronomy and Geophysics, Helwan, Cairo, Egypt
Introduction The fast development of the Sultanate of Oman in the last few decades necessitated the establishment of a local seismic network to monitor seismic activity in and around the sultanate. Nowadays, Oman Seismological Network (OSN) is consisting of twenty seismic stations and operated by the Earthquake Monitoring Center (EMC) at Sultan Qaboos University (SQU). The remote stations transmitted recorded seismic data continuously via the VSAT satellite to the EMC. The twenty seismic stations (Fig. 1) were established
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