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Геодинамика и тектонофизика

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РАСПРЕДЕЛЕНИЕ КОСЕЙСМИЧЕСКОГО СМЕЩЕНИЯ ПРИ ЗЕМЛЕТРЯСЕНИИ МАГНИТУДОЙ MW 6.8 В БЕНКУЛУ В 2020 Г. ПО ДАННЫМ ГНСС НАБЛЮДЕНИЙ

https://doi.org/10.5800/GT-2025-16-4-0839

EDN: WMQWMI

Аннотация

18 августа 2020 г. примерно в 130 км к юго-западу от Бенкулу произошло землетрясение магнитудой 6.8. В статье использованы статические ГНСС-данные с расположенных вокруг эпицентра землетрясения станций непрерывного мониторинга для получения записей в течение 10 дней до и 10 дней после землетрясения. Оценка распределения косейсмического смещения проведена при помощи двух моделей нодальных плоскостей в решении USGS. Расчет косейсмического смещения был проведен с использованием упругой полупространственной модели с оптимальным инверсионным смещением. ГНСС-данные смещений, составляющих менее ~5 мм, указывают на их незначительность и оптимальную модель с параметрами простирания 313° и падения 8° при несоответствии ~0.4 мм. В настоящем исследовании предполагается, что землетрясение 2020 г. в Бенкулу произошло в результате субдукции Индо-Австралийской плиты под Евразийскую плиту с кумулятивным сейсмическим моментом 1.73·1019 Н·м, эквивалентным магнитуде 6.76.

Об авторах

О. Анггара
Суматринский технологический институт
Индонезия

35365, Южный Лампунг



И. Мейлано
Бандунгский технологический институт
Индонезия

40132, Бандунг



С.М. Алиф
Суматринский технологический институт
Индонезия

35365, Южный Лампунг



С. Сусило
Национальное агентство исследований и инноваций
Индонезия

Богор



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Рецензия

Для цитирования:


Анггара О., Мейлано И., Алиф С., Сусило С. РАСПРЕДЕЛЕНИЕ КОСЕЙСМИЧЕСКОГО СМЕЩЕНИЯ ПРИ ЗЕМЛЕТРЯСЕНИИ МАГНИТУДОЙ MW 6.8 В БЕНКУЛУ В 2020 Г. ПО ДАННЫМ ГНСС НАБЛЮДЕНИЙ. Геодинамика и тектонофизика. 2025;16(4):0839. https://doi.org/10.5800/GT-2025-16-4-0839. EDN: WMQWMI

For citation:


Anggara O., Meilano I., Alif S., Susilo S. COSEISMIC SLIP DISTRIBUTION OF THE 2020 Mw 6.8 BENGKULU EARTHQUAKE DERIVED FROM THE GNSS OBSERVATIONS. Geodynamics & Tectonophysics. 2025;16(4):0839. https://doi.org/10.5800/GT-2025-16-4-0839. EDN: WMQWMI

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