000K utf8 1500 eng 2050 urn:nbn:de:gbv:8:3-2023-00122-3 2051 10.38072/978-3-928794-83-1/p3 3000 Hornung, Jens 4000 Submersible ground penetrating radar (SGPR) – chances and limits for underwater investigations [Hornung, Jens] 4209 Results of submerged ground penetrating radar (SGPR) measurements show spectacular detailed depositional structures of lake floor sediments, which could not be revealed with any other geophysical method yet. Due to its very high resolution, GPR is particularly suitable for archeological prospection on land surfaces and now on lake floors. A case study showed that a submerged archaeological site in Lake Constance (boulder mounds, the so-called “Hügelis”) is interfingering with the sedimentary record. Depositional history reveals that the site must be human-made and dates back to the prehistorical period. 14C ages of sediment and wood poles proved Neolithic age of the more than 170 boulder mounds comprising over 80,000 metric tons of rock. 4950 https://doi.org/10.38072/978-3-928794-83-1/p3$xR$3Volltext$534 4950 https://nbn-resolving.org/urn:nbn:de:gbv:8:3-2023-00122-3$xR$3Volltext$534 4961 https://macau.uni-kiel.de/receive/macau_mods_00003442 5051 550 5550 archeology 5550 Lake Constance 5550 Neolithic boulder mounds 5550 sedimentology 5550 underwater ground penetrating radar