Thread: Monster wave sets Southern Hemisphere record near Campbell Island

The Japan Times

MAY 11, 2018

WELLINGTON – Scientists have recorded what is believed to be the largest wave ever in the Southern Hemisphere, a 23.8-meter (78-foot) monster the height of an eight-story building.

A buoy recorded the wave on Tuesday during a ferocious storm in the notoriously wild Southern Ocean near Campbell Island, some 700 km (430 miles) south of New Zealand, research body MetOcean Solutions said.

Senior oceanographer Tom Durrant said it wiped out the previous Southern Hemisphere record of 22.03 meters recorded in 2012.

“To our knowledge it is largest wave ever recorded in the Southern Hemisphere,” he said, adding that the Southern Ocean was an “engine room” for generating swell waves that move across the planet.
“Indeed, surfers in California can expect energy from this storm to arrive at their shores in about a week’s time,” he said.

Durrant added that even bigger waves topping 25 meters were probably whipped up by the storm, which tracked east through the area on Tuesday, but the buoy was not in the best place to record them. He said the buoy, installed in March to measure the extreme conditions in the Southern Ocean, only records for 20 minutes every three hours to conserve its batteries.

“It’s very probable that larger waves occurred while the buoy was not recording,” he said.
The largest wave ever noted was an earthquake-generated tsunami at Alaska’s Lituya Bay in 1958 that measured 30.5 meters, according to Smithsonian magazine.

https://www.japantimes.co.jp/news/20.../#.WvZk8aelbxA

Massive wave is southern hemisphere record, scientists believe

11 May 2018



The wave was measured by a buoy at Campbell Island in the Southern OceanScientists in New Zealand have documented what they believe is the largest wave ever recorded in the southern hemisphere.

The 23.8m (78ft) wave was measured by a buoy on New Zealand's Campbell Island in the Southern Ocean on Tuesday, the country's weather authority said. It eclipses a 22.03m wave that was identified south of the Australian state of Tasmania in 2012. Larger waves have been recorded in the northern hemisphere.

The Meteorological Service of New Zealand (MetService) installed its solar-powered buoy in March. The area is known for big storm activity, but waves had been previously difficult to measure.

Bigger waves possible

The "eight-storey high" wave was generated by a deep low pressure system and 65-knot winds, said MetService senior oceanographer Dr Tom Durrant.
"This is a very exciting event and to our knowledge it is the largest wave ever recorded in the southern hemisphere," he told the BBC.



The buoy operates for 20 minutes every three hours. Dr Durrant said it was possible that even bigger waves were generated by the storm but not recorded.

The World Meteorological Organization does not hold official records on individual wave heights. Instead, it records an average of successive swells - a measure known as the "significant wave height".
During the storm recorded by New Zealand, the significant wave height was 14.9m.
That is a record for the Southern Ocean but below a 19m mark measured by a buoy in the North Atlantic in 2016, Dr Durrant said.

He said storms moved across the Southern Ocean largely unhindered due to a lack of land.
"[It is] the engine room for generating swell waves that then propagate throughout the planet," he said.
"Indeed surfers in California can expect energy from this storm to arrive at their shores in about a week's time."




Massive wave is southern hemisphere record, scientists believe - BBC News

Originally Posted by OhOh

Are there any measuring buoys south of Chile?

Sorry, only gulls.