| Abstract: | Seismic body waves, from tamped chemical explosions, two with yields of 50 and one of 150 kg, were compared with corresponding data from three mining-induced tremors with a view to testing methods of discriminating between the two types of events. It is concluded that for events of fixed low-frequency spectral asymptotes, the explosions typically have higher corner frequencies than tremors or earthquakes, although counterexamples certainly exist. Interestingly, the 150-kg explosion was identified as such on the basis of P and S wave polarities that are incompatible with the normally expected double-couple source model; instead these initial motions are consistent with an explosion in conjunction with normal faulting. The body wave spectra of this explosion and those of a nearby tremor, however, were indistinguishable. -from Authors |
| Genre: | Article |
| ProdID: | 70015902 |
| Citation Author: | McGarr, A.; Bicknell, J.; Churcher, J.; Spottiswoode, S. |
| Citation Contributing Office: | |
| Citation Datum: | |
| Citation Day: | |
| Citation Edition: | |
| Citation Editor: | |
| Citation End Page: | |
| Citation Issue: | B13 |
| Citation Keywords: | |
| Citation Language: | English |
| Citation Larger Work Title: | Journal of Geophysical Research |
| Citation LatN: | |
| Citation LatS: | |
| Citation LonE: | |
| Citation LonW: | |
| Citation Month: | |
| Citation No Pagination: | |
| Citation Number Of Pages: | |
| Citation Online Only Flag: | |
| Citation Phsyical Description: | |
| Citation Projection: | |
| Citation Public Comments: | |
| Citation Publisher: | |
| Citation Series: | |
| Citation Series Code: | |
| Citation Series Number: | |
| Citation Search Results Text: | Comparison of ground motion from tremors and explosions in deep gold mines; 1990; Article; Journal; Journal of Geophysical Research; McGarr, A.; Bicknell, J.; Churcher, J.; Spottiswoode, S. |
| Citation Start Page: | |
| Citation Volume: | 95 |
| Citation Year: | 1990 |
| Type: | citation/reference |
| Text: | Comparison of ground motion from tremors and explosions in deep gold mines; 1990; Article; Journal; Journal of Geophysical Research; McGarr, A.; Bicknell, J.; Churcher, J.; Spottiswoode, S. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/outside_thumb.jpg |
| Date Other: | Mon, 1 Jan 1990 00:00 -0600 |
| Publisher: | |
