North American Database of Archaeological Geophysics

Image Library (by geophysical survey type): Ground Penetrating Radar

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

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

ARIZONA

Valencia Site

GPR profile (colorized) of pithouse structure;

GPR time slice (colorized) from 0.4-0.8 m below surface;

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ARKANSAS

Bozeman Cemetery

A GPR profile showing a number of anomalies, several of which correspond with known graves, as well as a clear stratigraphic contact at Bozeman Cemetery, AR;

A time slice at 40-50 nS (two-way travel time) between 22 GPR transects showing known and probable graves and other anomalies at Bozeman Cemetery, AR;

Greenbrier Site (3IN1)

GPR interpretation image, Greenbrier Site, AR;

Mount Comfort Church

Thirty GPR profiles, each 0.5 m apart, were subjected to time slicing to produce plan graphics;

Close inspection reveals clear evidence of the church foundation in the 8-16 nS time slice, with evidence of perhaps a walkway seen in the 0-8 nS time slice;

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COLORADO

Kaplan-Hoover (5LR3953)

GPR profiles from the Kaplan-Hoover Site showing little pattern in the anomaly distribution;

Twelve Mile House (5AH121)

Anomalous GPR profile along Line 6;

GPR profile of undisturbed area along Line 3;

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FLORIDA

Fort Martello

GPR Slice 2 from a historic site at Fort Martello;

GPR Slice 4 (about 1.75 meters depth) from a historic site at Fort Martello;

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GEORGIA

Fort Stewart (Durrence Cemetery)

Ground Penetrating Radar profile for the 60N line;

Kasita Town (9CE1)

GPR data for Kasita town

Upatoi Town (9ME395)

GPR profile image, Upatoi Town, GA;

GPR profile image, Upatoi Town, GA;

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IOWA

Effigy Mounds National Monument (1)

A radar profile across the planar feature of Little Bear Mound (Mound 52);

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KANSAS

Army City (2)

A preliminary view of GPR data based on a composite of time slices resulting from 8 individual sub-blocks needed to survey entire area.

GPR data after filtering, GSSI Radan program was employed for slicing the data.

Color composite of five geophysical images for the same area using ground-penetrating radar, electrical resistance, soil conductivity, magnetic susceptibility and gradiometry,with each layer assigned a different color and made translucent

Bogan Site (14GE1)

GPR time slice of Grid 9 from 8.5 to 17.1 nS;		GPR time slice of Grid 8 from 8.5 to 17.1 nS;		GPR time slice of Grid 7 from 8.5 to 17.1 nS;
GPR time slice of Grid 3 from 0.0 to 8.5 nS;

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MASSACHUSETTS

Bunker Hill National Monument

Six 20 meter long ground penetrating radar profiles showing possible fortification ditches from the Revolutionary War battle, or subsequent modifications made by the British;

One ground penetrating radar profile showing possible fortification ditches from the Revolutionary War battle, or subsequent modifications made by the British;

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MICHIGAN

2002 Western Michigan University archaeological field school

GPR data

MINNESOTA

Medicine Lake Mounds (21HE0068)

GPR interpretation image, Medicine Lake Mounds, MN;

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MISSISSIPPI

Hollywood Mounds Site (22TU500)

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MISSOURI

Iliniwek Village State Historic Site (2)

GPR profile from Iliniwek Village using a 225 MHz antenna;

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MONTANA

Last Stand Hill (horse cemetery)

GPR image showing a possible shallow grave;

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NEW JERSEY

Walton Cemetery

GPR profile showing reflection of possible grave.

NEW MEXICO

Adobe Pueblo Site (LA107488)

GPR profile (colorized) from a 500 MHz antenna;

GPR profile (colorized) from a 500 MHz antenna;

GPR profile (colorized) from a 500 MHz antenna;

Archaic Site (LA108027)

GPR profile (colorized) from a 500 MHz antenna;

Hungo Pavi (Chaco Canyon National Monument)

Radar echoes from subsurface targets at Hungo Pavi;

Cloudblower Site (LA89364)

GPR profile (colorized) from a 300 MHz antenna;

GPR profile (colorized) from a 300 MHz antenna;

Cobble Pueblo Site (LA84429)

GPR profile (colorized) from a 300 MHz antenna;

Escondido Pueblo (FB9569)

Filtered GPR data enhances the linear alignments of room blocks at a depth of .25 to .5 m

Close up view of structures found with the GPR

Pithouse Site (LA53672)

GPR profile (colorized) from a 300 MHz antenna;

Pueblo Site

GPR time slices from a pueblo near Los Alamos, New Mexico;

Interpretation of GPR time slices from a pueblo near Los Alamos, New Mexico;

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NEW YORK

Sylvester Manor

GPR study block in the vicinity of Sylvester Manor, Shelter Island, NY, illustrating a rectangular cultural feature;

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NORTH DAKOTA

Fort Clark Trading Post (32ME2)

GPR results from a 30 x 20 m study block at Fort Clark Trading Post, ND;

Mit-tutta-hang-kush Village (Fort Clark State Historic Site, 32ME2)

A GPR time slice, from 11.5-15.5 nS, showing the floor and entryway of a previously unknown earthlodge;

On-A-Slant Village (32MO26) (1)

GPR transects in the western site perimeter survey, east of the road;

GPR transects in the western site perimeter survey, west of the road;

On-A-Slant Village (32MO26) (2)

Results of the GPR survey of an earthlodge;

GPR profile adjacent to on-going fortification ditch excavations by the University of North Dakota;

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OHIO

Johnson's Island (Confederate Stockade Cemetery)

GPR image showing a soil horizon that was used to identify disturbances that may indicate graves;

GPR image that exhibits a well-pronounced reflection that is likely an air-filled or metallic coffin at approximately 0.8 meters deep;

Interpretation of graves from survey. Red indicates possible coffin, blue-filled indicates well defined soil disturbance, and blue-unfilled indicates possible grave based on soil disturbance;

Wright Memorial Mounds

Radar profile along line W27 at Mound 2, Wright Memorial Mounds, Ohio;

Radar profile along line W27.5 at Mound 2, Wright Memorial Mounds, Ohio;

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OKLAHOMA

Odessa-Yates (34BV100)

GPR time slice plot (a horizontal planview isolating specific depths) showing a circular anomaly coinciding with a resistance and magnetic anomaly;

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OREGON

Siletz Cemetery

GPR signals from Burial-1 and Burial-3;

Overlay of the magnetic data and GPR data with the locations of four marked graves identified;

8-bit color image from the RGB grayscale images of the survey data;

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PENNSYLVANIA

Valley Forge National Historical Park

Radar profile in M17 showing difference in signal received from the backfilled half and the undisturbed half of an offal pit;

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SOUTH CAROLINA

38SU45

GPR profile image, 38SU45, Sumter County, SC;

38SU147

GPR interpretation image, 38SU147, Sumter County, SC;

Silver Bluff Plantation (38AK7)

Three slices of GPR data reveal different feature types at different depths (plow scars, linear features, and structure foundations)

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SOUTH DAKOTA

Whistling Elk Village (39HU242)

Ten 15 m ground penetrating radar transects were run over a 5 m length of the fortification ditch at Whistling Elk Village, SD, each separated by 50 cm;

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TEXAS

Kaufman-Roitsch (41RR16)

Principal GPR anomalies at the Kaufman-Roitsch Site, TX, showing the known and discovered graves and a linear feature, probably a trail;

GPR time slice at 25 nS showing two clear anomalies at the locus of the known and discovered graves at the Kaufman-Roitsch site, TX;

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UTAH

Bluff Great House

GPR profile (colorized) from a 500 MHz antenna;		GPR time slice (colorized) from the Bluff Great Kiva Site at 0.47-0.68 m depth;		GPR time slice (colorized) from the Bluff Great Kiva Site at 0.90-1.11 m below the present ground surface;
GPR time slice (colorized) from the Bluff Great Kiva Site at 1.11-1.33 m below the present ground surface;

Coder Site

GPR time slice (colorized) from the Coder Site at 4.08-7.92 nS (4-19.4 nS=15-200 cm depth);

GPR time slice (colorized) from the Coder Site at 7.92-11.84 nS (4-19.4 nS=15-200 cm depth);

GPR time slice (colorized) from the Coder Site at 11.84-15.68 nS (4-19.4 nS=15-200 cm depth);

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VIRGINIA

Falling Creek Ironworks (44CF7)

A representative GPR transect displayed as a two-dimensional plot;

Fort Eusits (44NN189, 44NN190, 44NN190.2)

3-D image of GPR survey for the Curtis Cemetery showing the location of the Curtis Tomb		Time slice of the location of the Crafford Tomb in the Crafford Cemetery
3-D image of Anomalies similar to the Cutis Tomb;		Unknown cemetery anomalies

Fort Monroe (44HT27)

GPR time slice 7 30-35ns where an anomaly possibly representing feature 2 is visible;

A GPR transect diplayed as a profile revealing a possible feature previously excavated;

Fort Morton (Petersburg National Battlefield)

A high frequency (315 MHz) antenna GPR profile over the trenches of the bombproofs at Fort Morton;

Radar echoes of the Bombproof;

GPR profiles of the Iron detail;

Jamestown Island (Brewhouse Area)

Two radar profiles at the Brewhouse area;

Mount Vernon

Ground penetrating radar image from Mount Vernon;

St. George Tucker House

Ground penetrating radar profile along line N1357;

Ground penetrating radar profile along line E771;

Taylor House (Petersburg National Battlefield)

A GPR profile of the Taylor House cellar with a low frequency (120 MHz) antenna;

A GPR profile of the Taylor House cellar with a high frequency (315 MHz) antenna;

A GPR profile of the length of the Taylor House cellar made with a medium resoulution, 180 MHz antenna;

Travis Site

A quiet GPR profile at the Travis site;		GPR profile revealing the location of a possible path;		GPR profile showing irregular strata near a possible road;
GPR profile showing the location of a possible earthen feature;

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WEST VIRGINIA

Merritt Cemetery

Resistance image with GPR anomalies overlain. The filled ellipses indicate strong readings and open ellipses are moderate readings;

Profile image of GPR readings showing a grave, soil horizons, and air wave signatures;

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WYOMING

Kane Cemetery (48BH3104)

Ground-penetrating radar high-amplitude		Ground-penetrating radar point location anomalies;		Ground-penetrating radar low-amplitude anomalies;
Interpretation of GPR data;

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CANADA

Newfoundland

Basque Whaling Station (Red Bay National Historic Site)

Short sections of radar data on line S293.5 indicating two shallowly buried targets and a surface rock;

Quebec

Parc Laurier

Radar data from line 190 E between 90 N and 30 N;

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