Is NYC really sinking? What can be done?

Dear EarthTalk: Is New York City really sinking? If so, is it a problem and is it a natural or human-caused phenomenon? Can anything be done about it?

—Jane B., Newark, NJ

 

The sea level surrounding New York City (NYC) is nine inches higher today than it was in 1950. Put differently. While it took 48 years for the sea level around NYC to rise by six inches, the next three inches took less than 20 years. Scientists forecast that in the next 14 years the waters around NYC will rise another six inches. With all five boroughs of the city surrounded by water, the sinking of NYC puts its 8.4 million residents, its economy, and its property worth billions of dollars at risk.

The sinking or settling of Earth’s surface is known as subsidence—a geological process that can be either natural or human-caused. For NYC, the main cause of subsidence is the sheer weight of the more than one million structures built on it. The United States Geological Survey estimates that structures in NYC weigh 1.68 trillion pounds—the equivalent of 1.9 million Boeing 747s. The pressure exerted by this extraordinary weight causes NYC to sink 0.04 to 0.08 inches every year.

There are other reasons, too, that NYC is sinking. Global warming, caused by the high level of human-made carbon emissions, is steadily increasing sea levels. Warmer temperatures melt ice sheets and glaciers, adding water to the oceans. And as ocean waters warm up, it causes oceans to expand. Climate change is also contributing to NYC’s sinking by increasing the frequency of hurricanes. As the world heats up, more evaporation from water bodies takes place, causing heavier precipitation and more flooding along the shores, The National Oceanic and Atmospheric Administration has found that because of climate change, coastal flooding has become 40 percent more likely and 10 percent more intense.

Yet another human-made contributor to the sinking of NYC is the extraction of groundwater from underground aquifers, which is used to supply a third of the city’s drinking needs. Years of pumping these aquifers has caused the soil to compact by reducing the size and number of open pores in the soil that previously held water.

To minimize subsidence, NYC could halt the construction of new buildings. But this is unrealistic. It could limit extraction of groundwater, but that would threaten the availability of safe drinking water. NYC could build defenses such as seawalls and flood gates. 

Alternately, the NYC government could adopt more creative urbanization plans that build away from areas vulnerable to subsidence, and consider the construction of new pipe systems to transport water from regional aqueducts instead of extracting local groundwater. And most important, they can support policies that mitigate global warming, such as carbon taxation, and provide incentives for clean energy adoption.

 

EarthTalk® is produced byRoddy Scheer & Doug Moss for the 501(c)(3) nonprofit EarthTalk. See more www. emagazine.com. Send questions to: question@earthtalk. org

Latest News

North East’s commercial rezoning puts focus on housing

The North East Town Hall building, where town officials will hold a public hearing on Thursday, Jan. 8, at 7 p.m., on proposed zoning code amendments

By Nathan Miller

MILLERTON — The zoning code changes that will be the focus of a public hearing on Thursday, Jan. 8, represent a major overhaul of the code since it was adopted in the 1970s, placing a strong focus on promoting housing options in the town’s commercial district.

The hearing is scheduled for Jan.8 at 7 p.m. at Town Hall and the draft of the amendments can be found online at townofnortheastny.gov/zoning-review-committee/ or in person at Town Hall or at the NorthEast-Millerton Library.

Keep ReadingShow less
Sharon Hospital drops NDP as ambulance provider

Sharon Hospital in Sharon, Connecticut.

Archive photo

SHARON — Northern Dutchess Paramedics will cease operating in northwest Connecticut at the start of the new year, a move that emergency responders and first selectmen say would replace decades of advanced ambulance coverage with a more limited service arrangement.

Emergency officials say the change would shift the region from a staffed, on-call advanced life support service to a plan centered on a single paramedic covering multiple rural towns, raising concerns about delayed response times and gaps in care during simultaneous emergencies.

Keep ReadingShow less
Trevor-Lovejoy Zoo receives $5M for new animal hospital

Max Amsterdam reaches out to pet a red panda at the Trevor-Lovejoy Zoo on Millbrook School’s campus on Wednesday, Dec. 17. Amsterdam is a senior at Millbrook School and serves as the zoo’s head student curator.

Photo by Aly Morrissey

MILLBROOK — The Trevor-Lovejoy Zoo announced this month that it has received a $5 million donation — the largest in the organization’s history and made anonymously — that will primarily fund a state-of-the-art animal hospital, a key feature of the zoo’s current master plan for expansion. The zoo, which is located at the Millbrook School, currently houses 180 exotic animals from all over the world.

“It’s very exciting,” said Nancy Stahl, who oversees fundraising for the zoo. “This gift is going to enhance everything we already do and enable us to increase opportunities for science, our community and support the well-being of our animals.”

Keep ReadingShow less
New program offers home pickup for textile recycling

AMENIA — Residents can now take advantage of a local recycling program that offers convenient home pickup for textiles and other household items. The program, approved by Dutchess County, was outlined by Town Board member and Town Supervisor-elect Rosanna Hamm.

The service, operated by Helpsy, accepts unwanted clothing, footwear, textiles, accessories and linens, along with items such as luggage and stuffed animals. According to the Environmental Protection Agency, only about 17% of recyclable textiles are currently reclaimed, with the rest ending up in landfills or municipal incinerators.

Keep ReadingShow less