| DOI: | 10.1002/2016GL070742
|
| 论文题名: | Magnitude-based discrimination of man-made seismic events from naturally occurring earthquakes in Utah, USA |
| 作者: | Koper K.D.; Pechmann J.C.; Burlacu R.; Pankow K.L.; Stein J.; Hale J.M.; Roberson P.; McCarter M.K.
|
| 刊名: | Geophysical Research Letters
|
| ISSN: | 0094-8462
|
| EISSN: | 1944-8193
|
| 出版年: | 2016
|
| 卷: | 43, 期:20 | | 起始页码: | 10638
|
| 结束页码: | 10645
|
| 语种: | 英语
|
| 英文关键词: | mining-induced seismicity
|
| Scopus关键词: | Geophysics
; Induced Seismicity
; Seismology
; Tectonics
; Waveguides
; Low velocity layers
; Mining-induced seismicity
; Naturally occurring
; Near surfaces
; Near-surface waveguide
; Peak amplitude
; Tectonic earthquakes
; Tectonic seismicity
; Earthquakes
|
| 英文摘要: | We investigate using the difference between local (ML) and coda/duration (MC) magnitude to discriminate man-made seismic events from naturally occurring tectonic earthquakes in and around Utah. For 6846 well-located earthquakes in the Utah region, we find that ML-MC is on average 0.44 magnitude units smaller for mining-induced seismicity (MIS) than for tectonic seismicity (TS). Our interpretation of this observation is that MIS occurs within near-surface low-velocity layers that act as a waveguide and preferentially increase coda duration relative to peak amplitude, while the vast majority of TS occurs beneath the near-surface waveguide. A second data set of 3723 confirmed or probable explosions in the Utah region also has significantly lower ML-MC values than TS, likely for the same reason as the MIS. These observations suggest that ML-MC is useful as a depth indicator and could discriminate small explosions and mining-induced earthquakes from deeper, naturally occurring earthquakes at local-to-regional distances. ©2016. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84991711479&doi=10.1002%2f2016GL070742&partnerID=40&md5=871b651a9967e2ece558da29bb0ffac1
|
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/9425
|
| Appears in Collections: | 科学计划与规划
气候变化与战略
|
|
There are no files associated with this item.
|
|
作者单位: | Department of Geology and Geophysics, University of Utah, Salt Lake City, UT, United States
|
| Recommended Citation: | |
Koper K.D.,Pechmann J.C.,Burlacu R.,et al. Magnitude-based discrimination of man-made seismic events from naturally occurring earthquakes in Utah, USA[J]. Geophysical Research Letters,2016-01-01,43(20).
|
|
|