Application of P-wave Mwp magnitude to earthquakes for tsunami early warning in and around South-Western Turkey

Tezel, Timur

doi:10.1007/s11200-014-0825-2

Cited by 5 publications

(2 citation statements)

References 14 publications

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“…The main issue is the selection of the time window on seismograms to calculate the P-wave moment magnitude. Either using a fixed time window or a moving window cause some problems because it is very difficult to catch the right source duration at moment magnitude calculations [15,16]. To overcome this type of problem, this study proposed the use of a time window that starts 10sec before P-wave arrival and finishes at S-wave onset for each seismogram.…”

Section: Methodsmentioning

confidence: 99%

Rapid Magnitude Determinations for Tsunami Early Warning: A sample case, October 30, 2020, Samos Island Earthquake

Tezel¹

2022

acperpro

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It is vital to calculate the magnitude of an earthquake to give a response and disseminate the early warning to evacuate the people as soon as possible. Generally, the magnitude determination process takes a couple of minutes and has some difficulties because the propagation effect depends on the epicentral distances. The moment magnitude is calculated for large earthquakes, in general, using body waves that it takes at least ten minutes to calculate. This time is too much for giving an alarm and evacuating the people who live near the coastal areas. This study is concentrated improve and implementing the P-wave moment magnitude calculations to use in early warning issues by using a sample case that occurred on October 30, 2020, on Samos Island that is near to Aegean coast of Turkey. It was destructive effects on İzmir. In total, 115 people have lost their lives and more than a thousand people are wounded. The magnitude of this event was announced as 6.6 (Mw) by the Disaster and Emergency Presidency (AFAD), Earthquake Institute. A small-scale tsunami wave arrived in the Sığacık-Seferihisar region. The P-wave moment magnitude is calculated as 7.0 in this study, and it is similar to the Global Centroid Moment Tensor Solution (Mw-GCMT) result. This study shows the technique can be used for early warning purposes at regional distances.

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Section: Methodsmentioning

confidence: 99%

Rapid Magnitude Determinations for Tsunami Early Warning: A sample case, October 30, 2020, Samos Island Earthquake

Tezel¹

2022

acperpro

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“…These calculations are based on farfield recordings of tsunamigenic earthquakes. In contrast, Hishorn et al [8], Tezel and Yanik [9], and Tezel [10] showed that the Mwp could be calculated using local and regional earthquakes. Although these studies used weak-motion velocity seismograms from broadband seismometers, Tezel [11] used strong motion records for the calculations.…”

Section: Introductionmentioning

confidence: 95%

Determining the Success of Strong Motion Records in Calculating P-Wave Moment Magnitude

Tezel

Gluyas

Foulger

2023

Academic Platform Journal of Natural Hazards and Disaster Management

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Earthquake early warning systems have high importance and improving continuously using different analysing techniques. The system depends on calculating a magnitude in a short time with as high accuracy as possible. Large earthquakes that have tsunami potential occurred and will be occurred especially in the Mediterranean and Aegean Seas Turkey has settlements along these coastlines. In practice, weak-motion (velocity) records are generally used to determine the magnitude, but these seismic records have a disadvantage: a clipping problem around the epicentre. Up to now, there is not much work on the study of the strong-motion (acceleration) records to calculate the magnitude of an earthquake in a short time with high accuracy. This study focused on calculating the P-wave moment magnitude using P-wave body waves recorded at strong motion seismic stations caused by possible tsunami source region earthquakes. For that reason, we used three earthquakes that have a magnitude larger than 6.0 Mw. The difference between the Global Centroid Moment Tensor (GCMT) moment magnitude is about 0.2 m.u. which is acceptable considering an early warning purpose.

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Rapid Moment Magnitude (Mwp) Calculation for UK Broadband Seismic Stations Using Teleseismic Waves

Tezel,

Foulger,

Gluyas

2024

Pure Appl. Geophys.

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Application of P-wave Mwp magnitude to earthquakes for tsunami early warning in and around South-Western Turkey

Cited by 5 publications

References 14 publications

Rapid Magnitude Determinations for Tsunami Early Warning: A sample case, October 30, 2020, Samos Island Earthquake

Rapid Magnitude Determinations for Tsunami Early Warning: A sample case, October 30, 2020, Samos Island Earthquake

Determining the Success of Strong Motion Records in Calculating P-Wave Moment Magnitude

Rapid Moment Magnitude (Mwp) Calculation for UK Broadband Seismic Stations Using Teleseismic Waves

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