Land near the Colorado-New Mexico border has recently been caving inwards in an area where a 5.3 magnitude earthquake took place in 2011. As KRCC’s Dana Cronin reports, scientists at the United States Geological Survey are pointing to wastewater disposal as a potential trigger.
Higher magnitude earthquakes are a rarity in Colorado, making the 2011 quake of special interest to scientists. Research showed a possible cause as wastewater injection which involves the pumping of large volumes of fluid into the Earth, creating high-pressure conditions.
State energy regulators have dropped their lawsuit against the city of Longmont for adopting stricter oil and gas rules that Colorado officials argued infringed on the state’s rights. Bente Birkeland has more…
Meanwhile, a judge in Fort Collins today ruled that that city's ban on fracking violates state law.
Scientists with the US Geologic Survey are studying the relationship between earthquakes, gas drilling and the practice of re-injecting waste-water into the ground. They're looking at area around Trinidad in Southern Colorado, where the number of earthquakes has been growing. Trinidad currently averages about eight magnitude-3 earthquakes a year.
Geophysicist Justin Rubinstein with the USGS, says there appears to be a correlation to the waste water injection process, but adds it happens at only a handful of the 35,000 injection wells across the country.