Dataframe of travel-time measurements for P- and S-waves.
P波和S波的旅行时间测量数据框。
用法----------Usage----------
data(tt.p)
data(tt.s)
格式----------Format----------
tt.p is a dataframe containing 5151 rows and tt.s is a dataframe containing 5364 rows. Each dataframe has the folowing columns:
tt.p是一个数据框包含5151行和tt.s是一个包含5364行的数据框。每一个数据框有如下因素:
hole.code
hole.code
hoffset
hoffset
z
Ž
tt.slant
tt.slant
sig
信号
背景----------Background----------
See reference for more information including
请参考更多的信息,包括
(作者)----------Author(s)----------
Eric M. Thompson <eric.thompson@tufts.edu>
源----------Source----------
http://quake.wr.usgs.gov/~boore/data_online.htm
参考文献----------References----------
Boore, D. M. (2003) A compendium of p- and s-wave velocities from surface-to-borehole logging: Summary and reanalysis of previously published data and analysis of unpublished data U.S. Geological Survey Open-File Report 03-191.