Seismic Refraction

1 / 4

# Seismic Refraction - PowerPoint PPT Presentation

t1 t2 t3 t4. Determine depth to rock layer, z R. Vertical Geophones. Source (Plate). x1 x2 x3 x4. z R. oscilloscope. Seismic Refraction. ASTM D 5777. Note: V p1 &lt; V p2. Soil: V p1. Rock: V p2. 1. V p2 = 4880 m/s. x c = 15.0 m. 1. V p1 = 1350 m/s.

I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.

## PowerPoint Slideshow about ' Seismic Refraction' - domani

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

t1

t2

t3

t4

Determine depth

to rock layer, zR

Vertical Geophones

Source

(Plate)

x1

x2

x3

x4

zR

oscilloscope

Seismic Refraction

ASTM D 5777

Note: Vp1 < Vp2

Soil: Vp1

Rock: Vp2

1

Vp2 = 4880 m/s

xc= 15.0 m

1

Vp1 = 1350 m/s

Seismic Refraction

Depth to Rock:

zc = 5.65 m

t values

x values

Source: geosystems.ce.gatech.edu/Faculty/Mayne/Research/misc/SeismicRefraction.ppt