@misc{indiciae637c574184b3,
  title = {Temporal variations in Global Seismic Stations ambient noise power levels},
  author = {A. T. Ringler and L.S. Gee and C. R. Hutt and D.E. McNamara},
  year = {2010},
  doi = {10.1785/gssrl.81.4.605},
  url = {https://pubs.usgs.gov/publication/70045080},
  note = {Source identifier: 70045080}
}