Category: Articles


  • Integration of GPR and GIS to Model the Distribution of Pre-Columbian Canoes, Florida

    The distribution of ancient dugout canoes, which were abandoned on waterways in Florida, were mapped with GPR and their locations studied using GIS. Canoes were located using GPR reflection profiles, which were compared to 2-D forward models for interpretation. Two lakes in northern Florida were found to contain many canoes, which were concentrated in distinct…

  • GPR on a High Mountain Lake, Colorado, USA

    Many GPR reflection profiles were collected using a canoe on a freshwater lake in the Rocky Mountains. Excellent radar wave penetration was measured, using both 270 and 400 MHz antennas. Reflection traces were placed into space using GPS and individual profiles were interpreted, with the lake bottom and other reflections digitized for three-dimensional mapping. It…

  • Salinas Cow Manure Project

    This is a fun paper that shows how even some of the worst conditions for GPR, can prove to be important with results that the client said were important. One of the very worst GPR projects of all time with collection in the rain and the ground wet cow manure.

  • GPR mapping to reconstruct a Late Classic Period Compound Wall, Chichen Itza, Mexico

    by Lawrence Conyers and Denisse Argote | Integrating a lidar relief map with GPR subsurface mapping, accompanied by locating known and inferred surface structures allowed for the reconstruction of a Late Classic Period walled compound. It was found that this enclosure is not perfectly rectangular, was partially dismanteled in the past, added on to in…

  • There Is A Coming Crisis In Peer Reviewed Publications In Our Field

    There is a coming crisis with peer reviewed publications in our field. The symptoms have been apparent for about 6 or 7 years and are now becoming obvious. Those of us who came from the academic realm have always relied on well-established publications to “show our worth” and achievements necessary for promotion and tenure decisions.…

  • GPR at Laetoli, Tanzania: Micro GPR for mapping hominid footprints

    Very high frequency ground-penetrating radar (GPR) reflection data were collected and processed at Laetoli Site S, to connect an ancient hominid pathway that was uncovered in two excavations conducted in 2016. These footprints have been dated to about 3.6 million years ago and are likely those of Australopithecus afarensis. Profiles were collected 5 cm apart…