README Ground Penetrating Radar (GRP) Results on SEDNA Physics Array This portion of the SEDNA archive is an active area of research with results only partially completed during the NSF Grant period. The data have been processed to some extent but reseach is ongoing. The following is an overview with researchers and students alike invited to explore further. We simply ask that if you use this data set, please consider contacting us to collaborate or provide additional updates. The GPR archive is summarized as follows: 1) The file called “GPR.ArchiveInventory.xls” provides an overview of data collection process. This excel sheet is the electronic summary of all field notes. 2) The file called “PostProcessingDocumentation.Sept2010.doc” contains technical notes summarizing all processing to date. If you wish to purchase the RADAN software and try this yourself the needed links are provided there. 3) The file called “Radan to Bitmap Conversion Utility.doc” explains the use of two utility programs to convert the RADAN proprietary software into common formats of Ascii and Bitmap converted with RTOAW.EXE and rad2bmp.exe, respectively. Samples of Ascii and Bitmap files are provided in the so-named folders. 4) The RawData folderare the original acquisitions. See file “GPR.ArchiveInventory.xls” for details. 5) The Radandat folder contains the best results to date that have been processed along each of the 7 physics array lines. The initial file named by line number is the raw data read into the RADAN software and parameterized using the “RADAN.SEDNAGPRPARAMETERS.PAM” file contained within that folder. This parameter file defines the settings of the radar and scaling parameters used. RADAN software is necessary to read this parameter file. 6) A sample student poster entitled “DemoPoster.pdf” is provided as overview of the ongoing research. Point of Contact: Research Associate Professor Cathleen Geiger Geography, University of Delaware cgeiger@udel.edu 603-646-4851