Current:Home > ContactWWII-era munitions found under water in survey of Southern California industrial waste dump site -ProfitZone
WWII-era munitions found under water in survey of Southern California industrial waste dump site
View
Date:2025-04-15 23:32:04
LOS ANGELES (AP) — Underwater dump sites off the Los Angeles coast contain World War II-era munitions including anti-submarine weapons and smoke devices, marine researchers announced Friday.
A survey of the known offshore sites in April managed to identify munitions by using high-definition video that covered a limited portion of the sites, the Scripps Institution of Oceanography at the University of California, San Diego, which led the survey, said in an email.
The survey, which used deep-water uncrewed vehicles equipped with sonar and a video camera, was a high-tech follow up in a region known to have been the dumping ground for industrial and chemical waste from the 1930s through the 1970s.
A 2021 survey using sonar had uncovered more than 25,000 “barrel-like objects” on the sea floor that possibly contained DDT and other toxic chemicals. High levels of the toxic chemical were previously found in sediments and marine mammals in the region, and DDT has been linked to cancer in sea lions.
However later research, including from the U.S. Environmental Protection Agency, suggested that much of the contamination may have come from acid waste containing DDT that was stored in above-ground tanks and then dumped into the sea in bulk from barges rather than in barrels.
The April survey included taking some 300 hours of high-definition video in a slice of that area, which allowed researchers to identify some of the mysterious boxes and barrels thousands of feet below the surface on the sea floor in lines between the mainland and Santa Catalina Island, Scripps said.
“In every debris line sampled with video, the majority of targets were found to be munitions,” the Scripps email said. “According to scientist Eric Terrill: ‘we started to find the same objects by the dozens, if not hundreds.”’
Sonar scanned a much larger area of the dump sites but wasn’t precise enough to distinguish the nature of the thousands of objects previously noted because munitions and barrels are similar in size, meaning video was the only way to positively identify the sea floor objects, Scripps said.
Researchers concluded that most of those identified objects were “multiple types of discarded military munitions and pyrotechnics,” according to an earlier statement from Scripps.
They included anti-submarine depth charges and smoke floats used to lay down cover for warships.
The US. Navy said the munitions were probably dumped during the World War II era as ships returned to port, at that time considered a safe and government-approved disposal method.
In a statement, the Navy said it is reviewing the findings to determine “the best path forward to ensure that the risk to human health and the environment is managed appropriately.”
___
This story has been corrected to delete a reference to thousands of sea floor objects being identified as World War II-era munitions through a survey of a known California offshore industrial waste dumping site. A clarifying statement from the research institution that led the survey says that while sonar was used over an area containing thousands of objects, high-definition video — the only way to identify the objects as munitions — was used only in a limited portion of the survey area.
veryGood! (4)
Related
- The FBI should have done more to collect intelligence before the Capitol riot, watchdog finds
- 2 killed, 3 injured in shooting at makeshift club in Houston
- SFO's new sensory room helps neurodivergent travelers fight flying jitters
- Travis Hunter, the 2
- Finally, good retirement news! Southwest pilots' plan is a bright spot, experts say
- Hackers hit Rhode Island benefits system in major cyberattack. Personal data could be released soon
- Intellectuals vs. The Internet
- Federal Spending Freeze Could Have Widespread Impact on Environment, Emergency Management
- $73.5M beach replenishment project starts in January at Jersey Shore
- Jamie Foxx reps say actor was hit in face by a glass at birthday dinner, needed stitches
Ranking
- In ‘Nickel Boys,’ striving for a new way to see
- Louvre will undergo expansion and restoration project, Macron says
- Warm inflation data keep S&P 500, Dow, Nasdaq under wraps before Fed meeting next week
- Tree trimmer dead after getting caught in wood chipper at Florida town hall
- 'As foretold in the prophecy': Elon Musk and internet react as Tesla stock hits $420 all
- South Korean president's party divided over defiant martial law speech
- Friday the 13th luck? 13 past Mega Millions jackpot wins in December. See top 10 lottery prizes
- New Mexico governor seeks funding to recycle fracking water, expand preschool, treat mental health
Recommendation
Spooky or not? Some Choa Chu Kang residents say community garden resembles cemetery
Nearly half of US teens are online ‘constantly,’ Pew report finds
Federal Spending Freeze Could Have Widespread Impact on Environment, Emergency Management
Tarte Shape Tape Concealer Sells Once Every 4 Seconds: Get 50% Off Before It's Gone
Are Instagram, Facebook and WhatsApp down? Meta says most issues resolved after outages
Questlove charts 50 years of SNL musical hits (and misses)
What do we know about the mysterious drones reported flying over New Jersey?
Tree trimmer dead after getting caught in wood chipper at Florida town hall