Project Documentation, Survey name,Fort 1 Survey index,Fort 1 Survey purpose,Investigation of fort on Gorgan Wall Spatial coverage,"37º31.163N, 55º34.556E and 37º31.347N, 55º34.689E" Country,Iran Duration,Summer 2005 Weather,Hot and sunny Soil condition,Dry Land use,Arable Monument type,Fort Monument period,Sasanian (5th to 7th century AD) Geophysical survey directors,"Roger Ainslie (not present, but provided the equipment and processed results)" Geophysical surveyors,"David Parker, James Ratcliffe, Hamid Omrani, Steve Usher-Wilson" Client,University of Edinburgh Depositor,"Eberhard Sauer, Classics, School of History, Classics & Archaeology, University of Edinburgh, David Hume Tower, George Square, Edinburgh, EH8 9JX, U.K." Primary archive,CD held by University of Edinburgh Classics Department Copyright,Abingdon Archaeological Geophysics Geophysical Survey, Survey type,Magnetometer Instrumentation,Bartington Grad 601/2 Fluxgate Gradiometer Area surveyed,80 grids (30m x 30m) - approximately 7.3 ha Method of coverage,"Regular grid, Zigzag" Traverse separation,1m Reading interval,0.25m Sampling position,Start northwest corner going east Grid size,30m x 30m Accuracy: spatial,Within 1m Accuracy: readings,"Automatic trigger while walking, 0.1 nT sensitivity" Data Recording, Grid size,30m x 30m Resolution,1m x 0.25m Survey direction,"Zigzag lines, start northwest corner going east" Line sequence,Zigzag Drift value,None as recalibrated every 3 squares Dummy value,32702 Documenting Data Treatment, Processing steps,"1. Data downloaded from machine using ArcheoSurveyor 2 Clip at 3 SD 3 De Stagger: Grids: d16.asg d15.asg ii02.asg d13.asg d10.asg d11.asg d09.asg d08.asg d07.asg d01.asg d02.asg d03.asg d04.asg d05.asg 41.asg 42.asg 43.asg 44.asg 46.asg 47.asg 48.asg 49.asg 50.asg ii03.asg a10.asg m01.asg m02.asg m03.asg m04.asg m05.asg m06.asg 02.asg 01a.asg 02a.asg 03a.asg 04a.asg m09.asg m08.asg m07.asg m15.asg ii04.asg m10.asg m11.asg m12.asg m13.asg d17.asg m14.asg ii06.asg ii07.asg Mode: Both Inc: -2 4 Zero Mean Traverse: Grids: FORT10R.asg Threshold: 2.5 SDs 5 Zero Mean Traverse: Grids: FORT9R.asg Threshold: 6 SDs 6 Zero Mean Traverse: Grids: All Threshold: 9 SDs 7 Zero Mean Traverse: Grids: All Threshold: 4 SDs 8 Zero Mean Traverse: Grids: FORT10R.asg Threshold: 4 SDs 9 Zero Mean Traverse: Grids: All Threshold: 6 SDs 10 Zero Mean Traverse: Grids: FORT11R.asg Threshold: 6 SDs 11 Zero Mean Traverse: Grids: All Threshold: 7 SDs 12 Zero Mean Traverse: Grids: FORT18.asg Threshold: 6 SDs 13 Zero Mean Traverse: Grids: All Threshold: 8 SDs 14 Zero Mean Traverse: Grids: FORT22.asg Threshold: 7 SDs 15 Zero Mean Traverse: Grids: FORT30B.asg Threshold: 7 SDs 16 Zero Mean Traverse: Grids: ii07.asg Threshold: 7 SDs 17 De Stagger: Grids: FORT4R.asg Mode: Both Inc: -2" Report Documentation, Report title,"Linear Barriers, Iran 44, 2006, 121-173 Published version.pdf" Report author,Eberhard Sauer Report holder,University of Edinburgh Report summary,"The geophysical survey provided fascinating insights into the architecture of the defences of the fort and the wall beyond the fort. These features caused very distinct positive linear anomalies and there thus seems little doubt that they, like excavated sections of the wall, comprised fired brick. " Digital Data Documentation, List of all file names,"Linear Barriers, Iran 44, 2006, 121-173 Published version.pdf, Fort1.xls, Fort 1 grid location.xls, Fort 1.jpg, 01a.grd, 02.grd, 02a.grd to 04a.grd, 41.grd to 44.grd, 46.grd to 50.grd, a10.grd, d01.grd to d11.grd, d13.grd, d15.grd to d17.grd, FORT1R.grd to FORT17R.grd, FORT18.grd to FORT24.grd, FORT25B.grd, FORT26.grd, FORT27.grd, FORT28B.grd, FORT29.grd, FORT30B.grd, ii02.grd to ii04.grd, ii06.grd, ii07.grd, m01.grd to m15.grd" "Hardware, software and operating system used","Bartington Grad 601/2 Fluxgate Gradiometer, ArcheoSurveyor, Windows XP" Date of last modification,2005