@misc{indiciaeb15cba10cd45,
  title = {What is that mysterious booming sound?},
  author = {David P. Hill},
  year = {2011},
  doi = {10.1785/gssrl.82.5.619},
  url = {https://pubs.usgs.gov/publication/70048204},
  note = {Source identifier: 70048204}
}