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Catalog of north Texas earthquakes confirms continuing effects of wastewater disposal
In their report published in the Bulletin of the Seismological Society of America, Louis Quinones and Heather DeShon of Southern Methodist University and colleagues confirm that seismicity rates in the basin have decreased since 2014, a trend that appears to correspond with a decrease in wastewater injection.
However, their analysis also notes that new faults have become active during this period, and that seismicity continues at a greater distance from injection wells over time, suggesting that "far-field" changes in seismic stress will be important for understanding the basin's future earthquake hazard potential.
"One thing we have come to appreciate is how broadly injection in the basin has modified stress within entire basin," said DeShon. The first thing researchers noted with wastewater injection into the basin "was the reactivation of individual faults," she added, "and what we're now starting to see is essentially the leftover energy on all sorts of little faults being released by the cumulative volume that's been put into the basin."
[...] The researchers found that overall seismicity in the Fort Worth Basin has been strongly correlated in time and space with wastewater injection activities, with most seismicity occurring within 15 kilometers of disposal wells.
Tracking Induced Seismicity in the Fort Worth Basin: A Summary of the 2008–2018 North Texas Earthquake Study Catalog [DOI: 10.1785/0120190057] [DX]
(Score: 0) by Anonymous Coward on Wednesday June 12 2019, @03:21PM (1 child)
We also like scientific understanding on this world. You are referencing a system with a huge amount of potential energy. Destabilizing thst system can cause energy to be released, and the only relation to the energy you put in is how destabilized you made the system.
Short answer, you're looking at first order effects and using seemingly correct but overly simplified logic. Ever heard of an exothermic reaction?
(Score: 0) by Anonymous Coward on Wednesday June 12 2019, @04:12PM
is a sure sign of understanding neither.
For one, rather unlike some sealed canister of fuel sitting in your garage, Earth crust is constantly subject to tectonic forces. Like this:
https://cddis.nasa.gov/slrtecto/eurtect.html [nasa.gov]
Wake me when us puny humans start moving continents around. Even if by centimeters per year. Till then, go and learn some about the energies involved in processes on a planetary scale. Some kinds of hubris really are not sane, even if imagining our mosquito bites have world-shattering effects fills someone's heart with self-importance.