Please ensure Javascript is enabled for purposes of website accessibility

Poorest Americans Dealt Biggest Blow Under Senate Republican Tax Package

8 hours ago

Trump Vowed to Dismantle MS-13. His Deal With Bukele Threatens That Effort.

12 hours ago

Ukraine Voices Concern as US Halts Some Missile Shipments

12 hours ago

Poll: Most Americans Say National Divide, Political Violence Threaten Democracy

13 hours ago

Paramount Settles With Trump Over ‘60 Minutes’ Interview for $16 Million

13 hours ago

Republicans Tee up House Vote on Trump Bill, Outcome Uncertain

13 hours ago

What’s Next for Sean ‘Diddy’ Combs After His Sex Trafficking Trial?

13 hours ago

Dalai Lama Says He Will Be Reincarnated, Trust Will Identify Successor

13 hours ago
Waves Grow to 13 Feet Tall in California as Earth Warms, Research Finds
By admin
Published 2 years ago on
August 3, 2023

Share

Getting your Trinity Audio player ready...

SAN DIEGO — Waves are getting bigger and surf at least 13 feet (about 4 meters) tall is becoming more common off California’s coast as the planet warms, according to innovative new research that tracked the increasing height from historical data gathered over the past 90 years.

Unusual Method of Measuring Wave Height

Oceanographer Peter Bromirski at Scripps Institution of Oceanography used the unusual method of analyzing seismic records dating back to 1931 to measure the change in wave height.

When waves ricochet off the shore, they collide with incoming waves and cause a ripple of energy through the seafloor that can be picked up by seismographs designed to detect earthquakes. The greater the impact, the taller the wave is.

Until now, scientists relied on a network of buoys by the National Oceanic and Atmospheric Administration that collect data on wave height along U.S. coasts, but that data along the California coast only went back to 1980.

“Until I stumbled upon this data set, it was almost impossible to make that comparison with any kind of reliability,” Bromirski said.

Analyzing Historic Seismic Reading to Analyze Change Over Time

To go back further, Bromirski gathered a team of undergraduate students to analyze daily seismic readings covering decades of winters. It was a slow, painstaking process that took years and involved digitizing drums of paper records. But he said it was important in learning how things have changed over nearly a century along California’s coast.

They found that average winter wave heights have grown by as much as a foot since 1970, when global warming is believed to have begun accelerating. Swells at least 13 feet tall (about 4 meters) are also happening a lot more often, occurring at least twice as often between 1996 to 2016 than from 1949 to 1969.

Bromirski was also surprised to find extended periods of exceptionally low wave heights prior to about 1970 and none of those periods since.

Flooding, Damage to Coastal Infrastructure, More Frequent Than Past

“Erosion, coastal flooding, damage to coastal infrastructure is, you know, something that we’re seeing more frequently than in the past,” Bromirski said. “And, you know, combined with sea level rise, bigger waves mean that is going to happen more often.”

Changes in waves are showing up in other ways, too.

“There’s about twice as many big wave events since 1970 as there was prior to 1970,” Bromirski said.

Published Studies

The study, published Tuesday in the Journal of Geophysical Research: Oceans, adds to the evidence that climate change is causing massive shifts in the world’s oceans. Other studies have shown waves are not only getting taller but also more powerful.

Damage from intense storms and massive surf is already playing out. This winter, California’s severe storms and giant waves collapsed bluffs, damaged piers and flooded parts of the state’s picturesque Highway 1.

Bromirski said that is a harbinger of the future. Scientists say global warming may even be accelerating, ushering in even bigger waves.

As sea levels rise and storms intensify, bigger waves will cause more flooding in coastal communities, erode away beaches, trigger landslides and destabilize remaining bluffs, he said.

These issues are of particular concern along the California coast, where sea cliffs have already started crumbling and brought down homes in recent years. Because of sea level rise, projections at the end of the 21st century indicate even moderate waves might cause damage comparable to that of extreme weather events, according to the study.

Extreme Storms and Violent Waves Increase as Oceans Warm, the Data Shows

Oceanographer Gary Griggs at the University of California Santa Cruz said while a jump of a foot in wave height over more than 50 years is not huge, the findings are consistent with what scientists know is happening to the world’s oceans as they warm: They are becoming increasingly violent due to more extreme storms and wreaking havoc along coasts.

Griggs, who was not involved in the research, said it adds to growing scientific data showing how fast the world is warming and how quickly seas are rising.

“We know hurricanes are more intense and last longer, and now we’ve got, you know, waves increasing in power. So those are all consistent,” he said. “The challenge … is sort of how to really respond to that.”

RELATED TOPICS:

DON'T MISS

What Are Fresno Real Estate Experts Predicting for 2025 and Beyond?

DON'T MISS

First California EV Mandates Hit Automakers This Year. Most Are Not Even Close

DON'T MISS

House Republicans Say They Expect to Vote Tonight on Trump’s Tax-Cut Bill

DON'T MISS

San Luis Obispo’s Madre Fire Grows to 8,300 Acres, Prompts Evacuations

DON'T MISS

SLO Deputies Fatally Shoot Man in Los Osos Weeks After US Marshal Impersonation Arrest

DON'T MISS

Madera County Deputy Injured, Wanted Felon Arrested After Violent Struggle

DON'T MISS

San Luis Obispo County Wildfire Burns More Than 3,000 Acres. No Containment Yet

DON'T MISS

Wired Wednesday: Why Is State Lawmaker Taking Aim at Rooftop Solar?

DON'T MISS

Two Visalia Men Sentenced in 2021 Motel Killing

DON'T MISS

Ex-Jan. 6 Defendant Gets Life in Prison for Plot to Kill FBI Agents

DON'T MISS

Del Monte Files for Bankruptcy. Gets Nearly $1B to Keep Producing Through Process

DON'T MISS

Who is Running for Fresno Area Offices in 2026? An Updated Look

UP NEXT

Downtown Housing Could Rise in Many California Cities, but Barriers Remain

UP NEXT

Trump Pulls Back 150 Guard Troops From Federal Duties in California

UP NEXT

California Republicans Send Message to Trump: Deport Criminals, Not Our Vital Workers

UP NEXT

CA Rolls Back Its Landmark Environmental Law to Speed Housing Construction

UP NEXT

France Shuts Schools, Italy Limits Outdoor Work as Heatwave Grips Europe

UP NEXT

California Seizes Over 600,000 Pounds of Illegal Fireworks. Newsom Calls for Safe Celebrations

UP NEXT

Buying a Home With Solar? Beware of CA Bill Written by Former Utility Co. Exec

UP NEXT

Trump Administration Sues Los Angeles Over Immigration Enforcement

UP NEXT

Immigration Raids Leave Crops Unharvested, California Farms at Risk

UP NEXT

CA’s Population Shrank in Trump’s First Immigration Crackdown. It Could Happen Again

Madera County Deputy Injured, Wanted Felon Arrested After Violent Struggle

6 hours ago

San Luis Obispo County Wildfire Burns More Than 3,000 Acres. No Containment Yet

6 hours ago

Wired Wednesday: Why Is State Lawmaker Taking Aim at Rooftop Solar?

7 hours ago

Two Visalia Men Sentenced in 2021 Motel Killing

7 hours ago

Ex-Jan. 6 Defendant Gets Life in Prison for Plot to Kill FBI Agents

7 hours ago

Del Monte Files for Bankruptcy. Gets Nearly $1B to Keep Producing Through Process

8 hours ago

Who is Running for Fresno Area Offices in 2026? An Updated Look

8 hours ago

CIA Review Finds Flaws but Does Not Dispute Finding Putin Sought to Sway 2016 Vote to Trump

8 hours ago

Poorest Americans Dealt Biggest Blow Under Senate Republican Tax Package

8 hours ago

Check Out Newest Downtown Mural. It’s a Spectacular Tribute to Fresno Artisans

9 hours ago

House Republicans Say They Expect to Vote Tonight on Trump’s Tax-Cut Bill

WASHINGTON – Republicans in the House of Representatives on Wednesday struggled to pass President Donald Trump’s massive tax-cut...

5 hours ago

Speaker of the House Mike Johnson speaks to the press, as Republican lawmakers struggle to pass U.S. President Donald Trump's sweeping spending and tax bill, on Capitol Hill, in Washington, D.C., U.S., July 2, 2025. (Reuters/Annabelle Gordon)
5 hours ago

House Republicans Say They Expect to Vote Tonight on Trump’s Tax-Cut Bill

The Madre Fire in San Luis Obispo County has rapidly expanded to 8,396 acres with no containment, prompting evacuation orders and warnings near New Cuyama. (CalFire)
6 hours ago

San Luis Obispo’s Madre Fire Grows to 8,300 Acres, Prompts Evacuations

Andrew Biscay, 40, was arrested Friday, June 20, 2025, after deputies found him with a fake U.S. Marshal’s badge, homemade firearm, and law enforcement-style gear during a warrant arrest. (Madera County SO)
6 hours ago

SLO Deputies Fatally Shoot Man in Los Osos Weeks After US Marshal Impersonation Arrest

On Tuesday, July 1, 2025, a Madera County sheriff’s deputy was injured while trying to arrest a wanted felon, Felix Adrian Nucamendi Carrasco, 40, who later fled and was captured near Raymond Road. (Madera County SO)
6 hours ago

Madera County Deputy Injured, Wanted Felon Arrested After Violent Struggle

A wildfire dubbed the Madre Fire has burned over 3,300 acres near New Cuyama with 0% containment, officials said Wednesday, July 2, 2025. (CalFire)
6 hours ago

San Luis Obispo County Wildfire Burns More Than 3,000 Acres. No Containment Yet

7 hours ago

Wired Wednesday: Why Is State Lawmaker Taking Aim at Rooftop Solar?

Jose Luna (left), 33, and Ralph Grajeda, 45, both of Visalia, have been sentenced for their roles in the 2020 shotgun killing of Robert Soto at a local motel. (Tulare County DA)
7 hours ago

Two Visalia Men Sentenced in 2021 Motel Killing

A U.S. Justice Department logo or seal showing Justice Department headquarters, known as "Main Justice," is seen behind the podium in the Department's headquarters briefing room before a news conference with the Attorney General in Washington, January 24, 2023. (Reuters File)
7 hours ago

Ex-Jan. 6 Defendant Gets Life in Prison for Plot to Kill FBI Agents

Help continue the work that gets you the news that matters most.

Search

Send this to a friend