discovering the prehistoric past of the north-east africa with ......the sabaloka project 2009-2011...
TRANSCRIPT
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Discovering the Prehistoric Past of the North-East Africa with GIS
Dr. Jan Pacina, [email protected]
J. E. Purkyne University, the Czech Republic, Europe
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The Sabaloka project
2009-2011
landscape archaeological research along the Nile river. Discovered more than 100 archaeological sites.
2011-2015
interdisciplinary research of prehistoric settlement and its interactions with the environment on the river Nile west bank within theSabaloka Dam Archaeological Salvage Project (SDASP)
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Area of interest
The Sabaloka mountains
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The Rocky Cities
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Surveying technology import conditions• strict conditions for surveying technology import• permition from the Sudan National Survey Authority required• custom duty (toll) for the imported technology (GPS/total stations)• better situation in the past years• for „walkie-talkies“ permition from the Ministry of telecomunications required
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Available basemaps
1:100 000 – covering selected parts of Sudan, altogether 220 mapsheets created in 1967, 1980 and 1983
1:250 000 – covering the whole Sudan, each map sheet covers ca 110x160km. Created 1936 – 1973
1:1 000 000 – 16 map sheets covering the whole Sudan. Created in 1944 – 1975
1:200 000 - created in 1970‘. by the USSR
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Current state of GIS in Sudan
Abdullah Elsadig Ali, Director General, Sudan National Survey Authority, KhartoumEighteenth United Nations Regional Cartographic Conference for Asia and the Pacific
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Coordinate systems
• Adindan – Sudanese national coordinate system• S42 – soviet maps• WGS 84 – own measurements• local coordinate systém for own precise measurements
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Fixed points and local coordinate system
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Methods
• surveying• close range photogrammetry
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Surveying toolsTotal station TCR 303• in combination with prism on a telescopic pole• longest measurements– 1500m (ca 1 mile)• temparature limit 50°C (122°F)
GNSS• Trimble Juno ST• Garmin GPSMap 62s
+ builder‘s tapes, folding rules, …
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Surveying tools• kite Elliot Rhombus Mega Power Sled, size300 × 170 cm, string ca 200 m, wind range2–5 Bft + GoPro Hero 3+• Sony Nex-7 camera
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Surveying results
• measured points and point clouds• archaological sites 3D models• detailed orthophotos of selected sites
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Data processing workflow
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Data processing workflowA
rchae
olo
gicaldata
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Resulting archaeological map – Fox Hill
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The usage of KAP
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Lake plane
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The Spinx site
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Reconstructing an extinct type of architecture
In cooperation with L. Varadzin and L. Sukova-Varadzinova
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Reconstructing an extinct type of architecture
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Reconstructing an extinct type of architecture
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Data available online
ArcGISOnline
Sabaloka Web AppSpinx Web App