Massive Russian earthquake and tsunami having no effect on subsea cables so
far

Date:
Wed, 30 Jul 2025 09:50:07 +0000

Description:
The world's sixth-largest earthquake just happened in Russian waters, but nearby subsea cables look to be unaffected.

FULL STORY

After the sixth-largest quake in recorded history struck off the eastern
coast of Russia, experts have been quick to reassure that critical subsea cables used for internet and data transfer remain secure.

Rated to magnitude 8.8, tsunami warnings are now being shared across the
whole North Pacific region, including Japan and America's West Coast, with waves already arriving in Hawaii, and Japanese low-lying coastal towns being urged to evacuate.

However, so far there have been no effects on critical infrastructure, with subsea cables remaining in tact.

Russian earthquake didn't prompt internet outages

So far, no outages have been reported by communication facilities, cloud computing services or chipmaking plants, with the likes of AWS, Azure and Google Cloud still operating normally.

Russias Rostelecom has not reported any disruptions to its subsea cable connecting Petropavlovsk-Kamchatsky with Anadyr, despite its location near to the quake site.

The 10-point Polar Express subsea cable that's currently under construction, also connecting Russian locations and also located near the earthquake's epicenter, doesn't look to have been disrupted, though the quake could cause delays to the project.

Although no other cables transit near the epicenter, the Pacific is filled
with major subsea cable networks, including Google's Topaz and Jupiter, which is part-owned by AWS and Meta.

Still, subsea cables are generally buries in trenches for the first few kilometres offshore. Once they're exposed on the ocean floor, they're deep enough not to be majorly affected by tsunami water columns. The biggest risk
is earthquake-triggered submarine landslides which threaten to break cables,
as seen when nine Asia-Pacific cables snapped in the 2006 magnitude 7.0
Taiwan earthquake.

Hyperscalers also make use of multiple Availability Zones, meaning that even
if Russia's earthquake were to affect one area, traffic could be rerouted within hours.

Via The Register

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Link to news story: https://www.techradar.com/pro/massive-russian-earthquake-and-tsunami-having-no -effect-on-subsea-cables-so-far

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