Staging of Occurrence of Seismicity Anomalies before Earthquakes in Kamchatka, Japan and Iceland

Smirnov, V.; Petrushov, A.

Авторы: Smirnov VB, Petrushov A.
Журнал: Izvestiya. Physics of the Solid Earth
Том: 59
Номер: 5
Год издания: 2023
Издательство: Pleiades Publishing, Inc.
Местоположение издательства: New York, USA
Первая страница: 717
Последняя страница: 732
Оригинальные версии: СТАДИЙНОСТЬ ПРОЯВЛЕНИЯ АНОМАЛИЙ СЕЙСМИЧЕСКОГО РЕЖИМА ПЕРЕД ЗЕМЛЕТРЯСЕНИЯМИ КАМЧАТКИ, ЯПОНИИ И ИСЛАНДИИ
DOI: 10.1134/S1069351323050129
Аннотация: The paper presents the results of a study showing that anomalies in the seismic regime parametersbefore earthquakes of various magnitudes occur in stages. The occurrence in stages means the correlationbetween the times of formation and development of anomalies in various seismic regime parameters. Earthquakesin regions with two general types of tectonics are selected for analysis: in the subduction zone (Kamchatkaand Japan) and in the rift zone (Iceland). The selection of regions is primarily based on the availabilityand quality of regional seismic catalogs. GR b-value and the composite parameter known as the RTL are usedas the seismic regime parameters. The detection of spatiotemporal anomalies before the selected earthquakesis based on the known “precursory patterns” of the seismic regime parameters. Comparing the durations ofthe detected anomalies shows that the anomalies of b-value generally occur earlier than the RTL anomalies.Possible reasons why the anomalies occur in stages are suggested. In the vicinity of the studied earthquakes,a change in the seismogenic rupture concentration parameter within the corresponding seismic cycles is alsoestimated. Comparing the times at which the detected seismic regime anomalies occur with the values of theseismogenic rupture concentration parameter corresponding to these times shows that the formation of seismicregime anomalies occurs at a stage when the system of seismogenic ruptures accumulated during the seismiccycle has almost reached its critical value
Добавил в систему: Смирнов Владимир Борисович

	ИСТИНА	Войти в систему Регистрация
	ФНКЦ РР
	Главная Поиск Статистика О проекте Помощь

ИСТИНА

ФНКЦ РР

Staging of Occurrence of Seismicity Anomalies before Earthquakes in Kamchatka, Japan and Icelandстатья

Прикрепленные файлы