Quantcast

Massive Half-Mile-Long Crack Appears in Ground in Northern Mexico

Climate

Last week a video emerged of a giant fissure in the Northern Mexican desert, 3,300 feet long and up to 25 feet deep. Speculation centered at first around an earthquake, but the region is not known for seismic activity. I personally checked out the U.S. Geological Survey earthquake data because the Buena Vista Copper mine (the fourth largest in the world by output) is only about 150 miles north of the enormous crack, and earlier this month they spilled 40,000 cubic meters of sulphuric acid into two rivers during the worst spill in Mexico's modern mining history. But I found no reports of tremors in the region and authorities were skeptical that this had anything to do with an earthquake.

Fast forward to Tuesday, Aug. 26, the Washington Post posted a story with this headline: Why no one should freak out about the giant crack that opened in the Mexico desert. The Post reports:

The chair of the geology department at the University of Sonora, in the northern Mexican state where this “topographic accident” emerged, said that the fissure was likely caused by sucking out groundwater for irrigation to the point the surface collapsed.

“This is no cause for alarm,” Inocente Guadalupe Espinoza Maldonado said. “These are normal manifestations of the destabilization of the ground.”

I'm sorry, no. These are not normal manifestations of natural activity, this the result of human activity run amok. Just because Cthulhu isn't clambering out of the breach to wreak havoc on humankind does not mean we shouldn't be alarmed by the fact we've sucked so much water out of the ground that the surface of the earth is collapsing.

Barely a month ago NASA's Jet Propulsion Laboratory warned of 'shocking' groundwater losses in the Colorado River basin, a major watershed to the north of Sonora with similar climate and landuse. Using gravitational data from the satellite-based Gravity Recovery and Climate Experiment (GRACE) instrument, scientists found "the basin lost nearly 53 million acre feet (65 cubic kilometers) of freshwater. That's almost double the volume of the nation's largest reservoir, Nevada's Lake Mead. More than three-quarters of the total—about 41 million acre feet (50 cubic kilometers)—was from groundwater."

NASA's measurements of groundwater based on gravity. Areas in red show a deficit in groundwater, blue indicates surplus. Image credit: NASA/JPL

The Washington Post also reports that cotton used to be a major crop, but intrusion of saltwater from the Sea of Cortez caused some areas to become unusable for agriculture. However, there is still plenty of large-scale agriculture as evidenced by the Landsat image below.

Hermosillo region of Sonora, Mexico, as seen by Landsat 8, on Aug. 17. Bright green rectangles in the middle of the desert are irrigated fields. However, around the green fields, there appear to many fields that are not being irrigated this season—seen as tan rectangles with a faint grid of roads in between parcels. The blue geometric shapes on the left appear to be salt-drying pans. Image credit: NASA/USGS via SkyTruth

Groundwater reserves can take centuries to recharge, so industrial-scale extraction of water for big agriculture in the middle of the desert cannot continue forever. In the U.S., water managers are facing an uphill battle to control water use in the Colorado River Basin and from the Ogallala Aquifer which stretches from Texas to South Dakota. Factor in that hydraulic fracturing is permanently removing water from the hydrological cycle in some of the most drought-stressed regions of the West, and you have a serious problem.

To be clear, the entire southwestern U.S. is not necessarily about to fall in on itself all at once, but it is struggling to support large-scale agriculture, enormous demand for water from a revitalized onshore oil and gas industry, and a growing population. Maybe this chasm in the desert doesn't herald the coming of Judgement Day, but perhaps we should be freaking out about our poor judgement.

YOU ALSO MIGHT LIKE

Methane Blow-Holes Sign of Runaway Climate Change?

Global Warming Deniers Become More Desperate By the Day

Must-See Video: Arctic Emergency, Scientists Speak

EcoWatch Daily Newsletter

Trump leaves after delivering a speech at the Congress Centre during the World Economic Forum annual meeting in Davos on Jan. 21, 2020. JIM WATSON / AFP via Getty Images

U.S. President Donald Trump dismissed the concerns of environmental activists as "pessimism" in a speech to political and business leaders at the start of the World Economic Forum (WEF) in Davos on Tuesday.

Read More

Warning: The video above may be upsetting to viewers.

An amusement park in China came under fire on social media this weekend for forcing a pig off a 230 foot-high bungee tower.

Read More
Sponsored
Participants at the tree-planting event in Ankazobe district, Madagascar, on Jan. 19. Valisoa Rasolofomboahangy / Mongabay

By Malavika Vyawahare, Valisoa Rasolofomboahangy

Madagascar has embarked on its most ambitious tree-planting drive yet, aiming to plant 60 million trees in the coming months. The island nation celebrates 60 years of independence this year, and the start of the planting campaign on Jan. 19 marked one year since the inauguration of President Andry Rajoelina, who has promised to restore Madagascar's lost forests.

Read More
A pedestrian wearing a mask walks in a residential area in Beijing on Jan. 21, 2020. The number of people in China infected by a new SARS-like virus jumped to 291, according to authorities. WANG ZHAO / AFP via Getty Images

A new coronavirus that began sickening people in China late in 2019 can be transmitted from human to human, the country's health ministry announced Monday.

Read More
New pine trees grow from the forest floor along the North Fork of the Flathead River on the western boundary of Glacier National Park on Sept. 16, 2019 near West Glacier, Montana. Chip Somodevilla / Getty Images

By Alex Kirby

New forests are an apparently promising way to tackle global heating: the trees absorb carbon dioxide, the main greenhouse gas from human activities. But there's a snag, because permanently lower river flows can be an unintended consequence.

Read More