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Умеренное землетрясение маг. 4.8 - Orange Free State, 13 km к востоку от Оркнейские, Южно-Африканская Республика, Воскресенье, 17 июл 2022 11:19 (GMT +2) -

Умеренное землетрясение маг. 4.8 - Orange Free State, 13 km к востоку от Оркнейские, Южно-Африканская Республика, Воскресенье, 17 июл 2022 11:19 (GMT +2) Умеренное землетрясение маг. 4.8 - Orange Free State, 13 km к востоку от Оркнейские, Южно-Африканская Республика, Воскресенье, 17 июл 2022 11:19 (GMT +2)

Умеренное землетрясение маг. 4.8 на глубине 10 км

17 Jul 09:21 UTC: Первым сообщить: VolcanoDiscovery через 2 минут.
17 Jul 09:25: Сейчас используются обновления данных из: EMSC
17 Jul 09:39: Величина пересчитана из 3.8 на 4.8. Местоположение эпицентра исправлено 8.3 km (5.2 mi) на SSE.
17 Jul 09:39: Сейчас используются обновления данных из: USGS
Update Sun, 17 Jul 2022, 09:45

Moderate magnitude 4.8 earthquake 13 km southeast of Orkney, South Africa

4.8 quake 17 Jul 11:19 am (GMT +2)
4.8 quake 17 Jul 11:19 am (GMT +2)
A shallow magnitude 4.8 earthquake was reported in the morning near Orkney, Dr Kenneth Kaunda District Municipality, North West, South Africa.
According to the United States Geological Survey, the quake hit on Sunday, July 17th, 2022, at 11:19 am local time at a shallow depth of 10 km. Shallow earthquakes are felt more strongly than deeper ones as they are closer to the surface. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
A second report was later issued by the European-Mediterranean Seismological Centre (EMSC), which listed it as a magnitude 4.8 earthquake as well. A third agency, the citizen-seismograph network of RaspberryShake, reported the same quake at magnitude 4.8.
Based on the preliminary seismic data, the quake was probably felt by many people in the area of the epicenter. It should not have caused significant damage, other than objects falling from shelves, broken windows, etc.
In Orkney (pop. 145,800) located 13 km from the epicenter, Stilfontein (pop. 93,100) 18 km away, Klerksdorp (pop. 178,900) 21 km away, and Viljoenskroon (pop. 55,000) 27 km away, the quake should have been felt as light shaking.
Weak shaking might have been felt in Potchefstroom (pop. 123,700) located 44 km from the epicenter, and Bothaville (pop. 71,900) 46 km away.
VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you're in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.

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Подробности землетрясения

Дата и время17 Jul 2022 09:19:31 UTC -
Местное время в эпицентреВоскресенье, 17 июл 2022 11:19 (GMT +2)
СтатусПодтвержденный
Величина4.8
Глубина10.0 km
Эпицентр Широта / Долгота27.006°S / 26.7956°E (Orange Free State, Южно-Африканская Республика)
Сейсмический антипод27.006°N / 153.204°W
Интенсивность тряскиЛегкая тряска
Ощутил83 отчета
Источник данныхUSGS (United States Geological Survey)
Города поблизости13 km (8 mi) ESE of Оркнейские (North-West) (pop: 145,800) | На карте | Землетрясения поблизости
18 km (11 mi) S of Stilfontein (North-West) (pop: 93,100) | На карте | Землетрясения поблизости
21 km (13 mi) SE of Клерксдорп (North-West) (pop: 178,900) | На карте | Землетрясения поблизости
27 km (17 mi) NW of Viljoenskroon (pop: 55,000) | На карте | Землетрясения поблизости
134 km (83 mi) SW of Соуэто (Gauteng) (pop: 1,695,000) | На карте | Землетрясения поблизости
153 km (95 mi) SW of Йоханнесбург (Gauteng) (pop: 2,026,500) | На карте | Землетрясения поблизости
197 km (123 mi) SW of Претория (Gauteng) (pop: 1,619,400) | На карте | Землетрясения поблизости
242 km (150 mi) NNE of Блумфонтейн (pop: 463,100) | На карте | Землетрясения поблизости
Погода в эпицентре во время землетрясенияClear Sky 17.3°C (63 F), humidity: 26%, wind: 1 m/s (3 kts) from NNW
Высвобожденная сейсмическая энергия1 x 1012 Дж (278 мегаватт-часов, эквивалент 239 тонн тротила) | about seismic energy
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Данные по одному и тому же землетрясению, предоставленные разными агентствами

Информация: чем больше агентств сообщают об одном и том же землетрясении и публикуют похожие данные, тем больше у вас доверия к этим данным. Обычно требуется до нескольких часов, прежде чем параметры землетрясения будут рассчитаны с почти оптимальной точностью.
МагнитудаГлубинаМестоположениеИсточник
4.810 km12 Km ESE of Orkney, South AfricaUSGS
4.810 kmSouth AfricaRaspberryShake
4.85 kmSOUTH AFRICAEMSC
4.610 kmSouth AfricaGFZ

Seismograms

Seismic station: Lobatse, Botswana (LBTB/GT network) | Distance from quake: 252 km / 156 mi | Показать на карте | Station Info
Seismic station Lobatse, Botswana: vertical movement plot around time of quake (source: IRIS/BUD)
Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Bandpass filter applied: 0.2-10.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool
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Отчеты пользователей об этом землетрясении (83)

В отчетах пользователей оценивается воспринимаемая интенсивность сотрясения земли согласно шкале Меркалли (Шкала Modified Mercalli Intensity, MMI).
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roodepoort (147.3 km NE of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 1-2 s : Chair and building shook | 4 users found this interesting.  
Coligny, North West / Weak shaking (MMI III) / rattling, vibrating / 2-5 s : Heard a rumbling sound like clouds but the sky was clear. Then the windows rattled and we felt a vibration. The dogs started barking it seemed for no reason. Then about 20 mins later we Googled and saw that there was a quake near Orkney. | 3 users found this interesting.  
Ottosdal, North West Province, South Africa (80.7 km WNW of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating : I started feeling vibrations from fairly deep in the ground around a week, week and a half ago already. It started out as a very feint & weak shake, it grew a bit stronger then it stopped for a couple of days and then it started again 3 days ago, stronger | 2 users found this interesting.  
Radiokop Johannesburg (148.7 km NE of epicenter) [Map] / Weak shaking (MMI III) : Watching TV... Felt a small jolt. Not very intense just one jolt. Small items like the fan and wallet art jolted | 2 users found this interesting.  
Johannesburg (154.9 km NE of epicenter) [Map] / Very weak shaking (MMI II) / 1-2 s : Sat up in bed, and my bed started shaking from left to right, I thought it was me so I moved and it wasn’t the same type of shake because it didn’t move when I tried | 2 users found this interesting.  
Klerksdorp / Weak shaking (MMI III) / vibration and rolling / 20-30 s : Several shakings quite strong. Made me feel worried. Scale of 1 low to 10 very strong I would rate it 6. | 2 users found this interesting.  
Viljoenskroon, skandenawië / Light shaking (MMI IV) / horizontal (sideways) swinging / 5-10 s : I heared this roaring sound that followed by a quick light shaking of about 5 to 10 seconds.Objects in the house was making noise during this time and i felt the shaking an roaring while sitting on the coach. | 2 users found this interesting.  
Rustenburg, Bojanala Platinum, North-West (156.8 km NNE of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 20-30 s : My coffee in cup had small waves plus a cupboard door that was slightly open tapped on cupboard frame a few times | One user found this interesting.  
Johannesburg (154.9 km NE of epicenter) [Map] / Very weak shaking (MMI II) / 1-2 s : Sat up in bed, and my bed started shaking from left to right, I thought it was me so I moved and it wasn’t the same type of shake because it didn’t move when I tried | One user found this interesting.  
Johannesburg (154.1 km NE of epicenter) [Map] / Very weak shaking (MMI II) : Studying at home, seated, felt a tremor and heard the wall creak. Lasted only a second or two and very weak.  
Centurion, Gauteng (178.5 km NE of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 1-2 s : Sitting in bed. Felt my bed vibrating, twice. | One user found this interesting.  
klerksdorp (21.5 km NW of epicenter) [Map] / Weak shaking (MMI III) / vibration and rolling / 5-10 s : everyone notice it | One user found this interesting.  
Klerksdorp (20.2 km NNW of epicenter) [Map] / Moderate shaking (MMI V) / rattling, vibrating / 2-5 s : Terrifying | One user found this interesting.  
Orkney, Dr Kenneth Kaunda District Municipality, North-West (12.8 km WNW of epicenter) [Map] / Moderate shaking (MMI V) / 1-2 s : Rumble started before everything started shaking | One user found this interesting. (reported through our app)  
flamwood kledk (21.2 km NNW of epicenter) [Map] / Weak shaking (MMI III) / single lateral shake / 10-15 s : i was at home | One user found this interesting.  
Klerksdorp / Moderate shaking (MMI V) / horizontal (sideways) swinging / 2-5 s : If felt the building shifting, heard parts rattling in response; and my body shook as the shockwave reveberated from the ground upwards.  
Meirings park / Light shaking (MMI IV) / rattling, vibrating / 15-20 s : The house was leterally shaking, all the pictutures nd decors on the walls were shaking | One user found this interesting. (reported through our app)  
Klerksdorp / Light shaking (MMI IV) / rattling, vibrating / 15-20 s : Tremble and shaking for about 10 to 20 seconds with a light bump about 3minutes later | One user found this interesting.  
Klerksdorp / Moderate shaking (MMI V) / vibration and rolling / 2-5 s : moderate shaking and loud. Walls, floor, and windows shaking. | One user found this interesting.  
CENTURION / Weak shaking (MMI III) / 2-5 s : Everything just started shaking | One user found this interesting.  
Klerksdorp / Light shaking (MMI IV) / rattling, vibrating / 1-2 s : As the quake uccured my computer crashed and my speakers started making weird noises | One user found this interesting.  
Klerksdorp (23.2 km NNW of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 2-5 s
near Orkney, Dr Kenneth Kaunda District Municipality, North-West (1.9 km SW of epicenter) [Map] / Very weak shaking (MMI II) / very short
Rustenburg district (126.1 km NNE of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating : Light shaking and ratling of windows.  
near Fochville, North-West (83.2 km ENE of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating
Mooikloof, Pretoria far east (199.4 km NE of epicenter) [Map] / Very weak shaking (MMI II) / horizontal (sideways) swinging / 2-5 s
Klerksdorp (21.1 km NNW of epicenter) [Map] / Moderate shaking (MMI V) : Heavy earthquake  
Bryanston (160.8 km NE of epicenter) [Map] / Weak shaking (MMI III) / single lateral shake / 1-2 s
Klerksdorp (23.2 km NW of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 5-10 s
Stilfontein (33.4 km NE of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 15-20 s
Klerksdorp (22.5 km NW of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 2-5 s : Standing on my porch.  
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Earlier earthquakes in the same area

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