| dbo:abstract
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- An earthquake occurred off the coast of the Alaska Peninsula on July 28, 2021, at 10:15 p.m. local time. The large megathrust earthquake had a moment magnitude (Mw) of 8.2 according to the United States Geological Survey (USGS). A tsunami warning was issued by the National Oceanic and Atmospheric Administration (NOAA) but later cancelled. The mainshock was followed by a number of aftershocks, including three that were of magnitude 5.9, 6.1 and 6.9 respectively. This was the largest earthquake in the United States since the 1965 Rat Islands earthquake, and the 7th largest earthquake in US history. It was also the strongest earthquake globally since the 2015 Illapel earthquake, tying the 2017 Chiapas earthquake and 2018 Fiji earthquake. No casualties or serious damage were reported in the aftermath of the mainshock, as well as some of the strong aftershocks. In Perryville, the closest populated area to the quake, cracks appeared in drywalls and on the ground. Some homes were also shifted. The limited impact from this earthquake was attributed to it occurring offshore from the sparsely-populated Alaska Peninsula. A tsunami warning was rescinded and no large waves were observed because the earthquake took place 32 km beneath the seafloor; deep enough that vertical uplift of the seafloor was limited therefore displacing smaller amounts of water. (en)
- El terremoto de Alaska de 2021 fue un sismo que ocurrió frente a la costa de la península de Alaska a las 22:15 hora local del 28 de julio. El terremoto tuvo una magnitud de momento (MW) de 8,2 según el Servicio Geológico de los Estados Unidos (USGS). Una alerta de tsunami fue emitida por la Oficina Nacional de Administración Oceánica y Atmosférica (NOAA) pero luego se canceló. Es el terremoto más grande en los Estados Unidos desde el terremoto de 1965 en las Islas Rat. (es)
- Il terremoto dell'Alaska del 2021 è un evento sismico che ha colpito la Penisola dell'Alaska il 29 luglio 2021 (28 luglio secondo il fuso orario dello stato) alle ore locali 22:15:49 (UTC-8). Il megasisma ha avuto una magnitudo momento di 8.2 e un'intensità VIII della scala MMS. Il National Oceanic and Atmospheric Administration aveva diramato un'allerta tsunami che è poi stata ritirata. Questo è stato il terremoto più forte negli Stati Uniti da quello delle Isole Rat del 1965; inoltre è il quarantesimo più potente al mondo. (it)
- 2021年阿拉斯加地震是指2021年7月29日（UTC+8）14时15分发生于美国阿拉斯加州以南海域的一场地震。该次地震震中位于55°28′26″N 157°55′01″W / 55.474°N 157.917°W, 震级为MW8.2级。出現海嘯。 (zh)
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- El terremoto de Alaska de 2021 fue un sismo que ocurrió frente a la costa de la península de Alaska a las 22:15 hora local del 28 de julio. El terremoto tuvo una magnitud de momento (MW) de 8,2 según el Servicio Geológico de los Estados Unidos (USGS). Una alerta de tsunami fue emitida por la Oficina Nacional de Administración Oceánica y Atmosférica (NOAA) pero luego se canceló. Es el terremoto más grande en los Estados Unidos desde el terremoto de 1965 en las Islas Rat. (es)
- Il terremoto dell'Alaska del 2021 è un evento sismico che ha colpito la Penisola dell'Alaska il 29 luglio 2021 (28 luglio secondo il fuso orario dello stato) alle ore locali 22:15:49 (UTC-8). Il megasisma ha avuto una magnitudo momento di 8.2 e un'intensità VIII della scala MMS. Il National Oceanic and Atmospheric Administration aveva diramato un'allerta tsunami che è poi stata ritirata. Questo è stato il terremoto più forte negli Stati Uniti da quello delle Isole Rat del 1965; inoltre è il quarantesimo più potente al mondo. (it)
- 2021年阿拉斯加地震是指2021年7月29日（UTC+8）14时15分发生于美国阿拉斯加州以南海域的一场地震。该次地震震中位于55°28′26″N 157°55′01″W / 55.474°N 157.917°W, 震级为MW8.2级。出現海嘯。 (zh)
- An earthquake occurred off the coast of the Alaska Peninsula on July 28, 2021, at 10:15 p.m. local time. The large megathrust earthquake had a moment magnitude (Mw) of 8.2 according to the United States Geological Survey (USGS). A tsunami warning was issued by the National Oceanic and Atmospheric Administration (NOAA) but later cancelled. The mainshock was followed by a number of aftershocks, including three that were of magnitude 5.9, 6.1 and 6.9 respectively. (en)
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- 2021 Chignik earthquake (en)
- Terremoto de Alaska de 2021 (es)
- Terremoto dell'Alaska del 2021 (it)
- Sismo de Chignik de 2021 (pt)
- 2021年阿拉斯加地震 (zh)
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