Sismos Internacionais 2026

7fc10ac055e9a68fc8b0b07ce817e297.jpg
 

Earthquake magnitude revised up to 8.0 or stronger​

Japan issued a special advisory on Monday warning of an increased risk of earthquakes at magnitude 8.0 or stronger, after a powerful jolt rattled the country’s north and prompted a tsunami warning.

The Japan Meteorological Agency said in a statement that “the likelihood of a new, huge earthquake occurring is relatively higher than during normal times.”
 

"

Earthquake of magnitude 7.8 strikes off southern Philippines, tsunami warnings issued​

By Reuters
June 8, 202612:49 AM GMT+1

MANILA, June 8 (Reuters) - Tsunami warnings were issued after an earthquake of magnitude 7.8 struck off Mindanao in the southern Philippines on Monday, ‌the German Research Centre for Geosciences said.
The quake struck at a depth of 10 km (6.2 miles), GFZ said. The geophysics agencies of the Philippines and neighbouring Indonesia issued tsunami warnings. There were no immediate reports of major damage in either ⁠country. "

Na informação preliminar a magnitude tinha sido calculada como 8.2.

Sismo_Mindanao_20260607-233744_71Km_8,2.webp


Nessa informação a profundidade é muito diferente da actualizada, o que é estranho pois a 10 Km de profundidade um sismo de 7.7 seria devastador.
Penso que os 10 Km se referem à distância do epicentro à costa:

distância 10Km.webp



"

Strong earthquake hits southern Philippinespublished at 01:35​

01:35​



A strong earthquake has just struck the southern Philippines at 07:37 local time (23:37 GMT).

The magnitude and depth of the earthquake are unclear at the moment: According to the Philippine Institute of Volcanology and Seismology (Phivolcs), the quake had a magnitude of 7.0 and a depth of 10km (6.2 miles). The US Geological Survey has recorded its magnitude as 7.8 and its depth as 35km. The German Research Centre for Geosciences put its magnitude at 7.8 and depth at 50km.

Several countries in the region, including the Philippines, Indonesia and Japan, have issued tsunami warnings."

6.1 e 6.4 serão prováveis réplicas, pouco mais de uma hora depois, com epicentro em terra.

"
Magnitude Mw 7.76
Status C
Epicentre 5.76° N 125.05° E
Depth 48 km
Region Mindanao, Philippines
Origin time (UTC) 2026-06-07 23:37:40 UTC
Local time - Browser 2026-06-08 00:37:40 GMT+1
Local time - Epicentre 2026-06-08 07:37:40 GMT+8


Magnitudes
* Mw7.76110
mb7.18 ± 0.23310
Mw(Mwp)7.77311
Mw(mB)8.10318
"
Sismo_Mindanao_20260607-233740utc_48Km_7,8.webp
 
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(não sei se todas as imagens se referem a este sismo, mesmo assim têm carácter informativo em geral)


Cena bastante elucidativa sobre o comportamento de certas estruturas em sismos longos:
 
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