NADAG: North American Database of Archaeological Geophysics

North American Database of Archaeological Geophysics

Image Library (by geophysical survey type): Seismic Refraction

(to view an enlargement of a graphic, click on it)

Project images sorted alphabetically by state or country; within each by site name

ILLINOIS

Cahokia Mounds State Historic Site (1)

Azimuthal seismic refraction measurements at location 1;

IOWA

Effigy Mounds National Monument (1)

Seismic record 245 showing the increasing delay in the arrival of the seismic wave at greater distance;		Reversed seismic record 246;		The dispersion of the seismic wave from recording 250;
A Rayleigh wave pseudosection measured on linear mound 20;

KANSAS

Fort Scott National Historic Site (2)

The seismic measurements at Fort Scott;

VIRGINIA

Fort Morton (Petersburg National Battlefield)

Examples of seismic signals at Fort Morton;

A seismic recording from 12 geophones;

Seismic refraction travel time at the Bombproof shelter;