Welcome to DU!
The truly grassroots left-of-center political community where regular people, not algorithms, drive the discussions and set the standards.
Join the community:
Create a free account
Support DU (and get rid of ads!):
Become a Star Member
Latest Breaking News
General Discussion
The DU Lounge
All Forums
Issue Forums
Culture Forums
Alliance Forums
Region Forums
Support Forums
Help & Search
Mapping Industrial "Hum" in the U.S.
https://www.seismosoc.org/news/mapping-industrial-hum-in-the-u-s/Mapping Industrial “Hum” in the U.S.
Published on 26 April 2019 | Annual Meeting, News
26 April 2019–Using a dense sensor network that scanned the United States between 2003 and 2014, researchers have identified areas within the country marked by a persistent seismic signal caused by industrial processes.
At the 2019 SSA Annual Meeting, Omar Marcillo of Los Alamos National Laboratory said that he and his colleagues are developing a map of this harmonic tonal noise or “industrial hum.” The harmonic tonal noise map that Marcillo and colleagues are developing can pinpoint where certain types of industrial activity are prominent.
Marcillo and his colleagues first noted the industrial signals in acoustic data they were collecting from infrasound experiments to study the global propagation of noise from phenomena like ocean storms. They realized that part of the infrasound signal they were detecting was coming from wind farms tens of kilometers away from the detectors.
They realized that the wind farms should send a seismic signal through the ground as well, and began searching for these signals in seismic data collected across the U.S. by the Transportable Array, a mobile network of 400 high-quality broadband seismographs that has been moved east to west across the U.S.
…
Published on 26 April 2019 | Annual Meeting, News
26 April 2019–Using a dense sensor network that scanned the United States between 2003 and 2014, researchers have identified areas within the country marked by a persistent seismic signal caused by industrial processes.
At the 2019 SSA Annual Meeting, Omar Marcillo of Los Alamos National Laboratory said that he and his colleagues are developing a map of this harmonic tonal noise or “industrial hum.” The harmonic tonal noise map that Marcillo and colleagues are developing can pinpoint where certain types of industrial activity are prominent.
Marcillo and his colleagues first noted the industrial signals in acoustic data they were collecting from infrasound experiments to study the global propagation of noise from phenomena like ocean storms. They realized that part of the infrasound signal they were detecting was coming from wind farms tens of kilometers away from the detectors.
They realized that the wind farms should send a seismic signal through the ground as well, and began searching for these signals in seismic data collected across the U.S. by the Transportable Array, a mobile network of 400 high-quality broadband seismographs that has been moved east to west across the U.S.
…