000196310 001__ 196310
000196310 003__ CZ-ZdVUG
000196310 005__ 20210823105453.0
000196310 041__ $$aeng
000196310 040__ $$aABC039$$bcze
000196310 1001_ $$aKostelecký, Jan
000196310 24510 $$aGravity aspects from recent Earth gravity model EIGEN 6C4 for geoscience and archaeology in Sahara, Egypt
000196310 300__ $$a8 stran
000196310 5203_ $$aA new method to detect paleolakes via their gravity signal is presented (here with implications for geoscience and archaeology). The gravity aspects or descriptors (gravity anomalies/disturbances, second radial derivatives, strike angles and virtual deformations) were applied. They were computed from the gravity field model EIGEN 6C4 (European Improved Gravity model of the Earth by New techniques). The model consists of the best now available satellite and terrestrial data, including gradiometry from the GOCE (Gravity field and steady-state Ocean Circulation Explorer) satellite mission. EIGEN 6C4 has the ground resolution ~10 km. From archaeological sources, the positions of archaeological sites of the Holocene occupations between 8500 and 5300 BCE (8.5–5.3 ky BC) in the Eastern Sahara, Western Desert, Egypt were taken. They were correlated with the features found from the gravity data; the correlation is good, assuming that the sites were mostly at paleolake borders or at rivers. Based on this finding, we suggest position, extent and shape of paleolake(s). We also reconsider the origin of Libyan Desert glass in the Great Sand Sea and support hypothesis about an older impact structure created there, repeatedly filled by water, which might be a part of some of the possible paleolake(s).
000196310 655_4 $$ačlánek v časopise
000196310 7001_ $$aBezděk, Aleš
000196310 7001_ $$aKlokočník, Jaroslav
000196310 7730_ $$92020$$dSpojené království Velké Británie a Severního Irska, 2020.$$g168. (AUG 2020), 8 s.$$tJOURNAL OF AFRICAN EARTH SCIENCES$$x1464-343X
000196310 8564_ $$uhttps://www.sciencedirect.com/science/article/abs/pii/S1464343X20301187
000196310 85642 $$ahttps://www.isvavai.cz/riv?s=rozsirene-vyhledavani&ss=detail&n=0&h=RIV%2F00025615%3A_____%2F20%3AN0000015%21RIV21-MSM-00025615
000196310 910__ $$aABC039
000196310 980__ $$aclanky_vugtk
000196310 985__ $$akosteleckyjan
000196310 985__ $$ariv
000196310 985__ $$autvar24