Archaeology
Nazca geoglyphs discovered used AI deep learning
Archaeologists from the Yamagata University have used AI deep learning to discover new geoglyphs in the northern part of the Nazca Pampa in the arid Peruvian coastal plain.
Geoglyphs in the Nazca Pampa were first identified during the 1920’s, with ongoing studies since the 1940’s revealing various figurative geoglyphs of zoomorphic designs, geometric shapes, and linear lines.
Geoglyphs can be categorised into three main types: figurative, geometric, and lineal. Archaeologists suggest that the lineal geoglyphs were created by the Nazca, a culture that developed during the Early Intermediate Period and is generally divided into the Proto Nazca (phase 1, 100 BC to AD 1), the Early Nazca (phases 2–4, AD 1 to 450), Middle Nazca (phase 5, AD 450 to 550) and the Late Nazca (phases 6–7, AD 550 to 750).
The relief type dates from the Late Formative period (400 to 200 BC), as the iconography of the geoglyphs are similar to that of Formative petroglyphs found on outcrops of rock. During this period, the region was inhabited by the Paracas Culture, an Andean people that emerged around 800 BC until 100 BC.
Since 2004, Yamagata University has been conducting geoglyph distribution surveys using satellite imagery, aerial photography, airborne scanning LiDAR, and drone photography to investigate the vast area of the Nazca Pampa covering more than 390 km2.
In 2016, the researchers used aerial photography with a ground resolution of 0.1 m per pixel to create a detailed survey of the region. Overtime, the team have identified various geoglyphs, however, the process is very time consuming, so they have adopted AI deep learning to analyse the photographs at a much faster rate.
The results of a study, published in the Journal of Archaeological Science, has revealed the discovery of four new Nazca geoglyphs using this new method by creating an approach to labelling training data that identifies a similar partial pattern between the known and new geoglyphs.
The four new geoglyphs depict a humanoid figure, a pair-of-legs, a fish, and a bird. The humanoid geoglyph is shown holding a club in his/her right hand and measures 5 metres in length. The fish geoglyph, shown with a wide-open mouth measures 19 metres, while the bird geoglyph measures 17 metres and the pair-of-legs 78 metres.
According to the study authors: “We have developed a DL pipeline that addresses the challenges that commonly arise in the task of archaeological image object detection. Our approach allows DL to learn representations of images with better generalisation and performance, enabling the discovery of targets that have been difficult to find in the past. Moreover, by accelerating the research process, our method contributes to archaeology by establishing a new paradigm that combines field surveys and AI, leading to more efficient and effective investigations.”
https://doi.org/10.1016/j.jas.2023.105777
Header Image Credit : Yamagata University
In 2023, archaeologists discovered the submerged remains of a Nabataean temple during an underwater survey of the ancient port of Puteoli, located in modern-day Pozzuoli, Italy.
Puteoli was established in the mid-6th century BC as a Greek colony called Dicaearchia. After the Roman conquest of Campania following the First Samnite War, Dicaearchia was annexed into the Roman Republic, which later founded the colony of Puteoli.
Puteoli served as one of the primary trading hubs for Rome, emerging as the great emporium of foreign trade for the Alexandrian grain ships and goods from across the Roman world.
Due to the position of Puteoli in the Phlegraean Fields, an active volcanic region, volcanic bradyseismic activity has raised and lowered the geology on the peninsula, resulting in parts of Puteoli being submerged.
The results of a year-long study, published in the journal Antiquity, has mapped and reconstructed parts of the submerged temple, the only known temple located outside of Nabataea – an allied kingdom of Rome that controlled territory from the Euphrates to the Red Sea.
The Nabataean temple and the internal routes of the vicus Lartidianus (dotted lines) at the current stage of research – Image Credit : M. Silani
Using a photogrammetric survey, the researchers have identified that the temple had a rectangular plan and two rooms with access facing north, linked to the internal routes of the vicus Lartidianus (an area designated for foreign people engaged in trade).
Within one of the rooms (designated Room A) are two altars made of white Luni marble, and a mensa with eight rectangular recesses for housing aniconic betils. In the second room (designated Room B), the southern perimeter wall has a white marble slab covering, one of which shows the inscription Dusari sacrum, meaning “consecrated to Dushara”, the chief deity of the Nabataean pantheon.
According to the study authors: “The existence of a Nabataean sanctuary within the port area confirms that there was a community from that region participating in the commercial activities of Puteoli.”
“The integration of these individuals within the local community is evident in the building techniques and materials used in the construction of the temple, and for the choice of Latin for the inscriptions to their supreme god, the lord of the mountains and the germinating force of nature, Dushara.”
Header Image Credit : M.Steanile
Sources : Antiquity | https://doi.org/10.15184/aqy.2024.107
This content was originally published on www.heritagedaily.com – © 2023 – HeritageDaily
Archaeologists from the Archaeological Museum at the University of Stavanger have discovered a Viking treasure hoard in the Hjelmeland municipality, Norway.
Excavations were in preparation for the construction of a new farm track to identify any archaeological remains in situ. The researchers discovered traces of a Viking farmstead, consisting of several structures for both the inhabitants and their animals.
Numerous domestic and agricultural objects have been unearthed, including soapstone pots, knife blades, rivets, and whetstones used for sharpening tools.
Mari Krogstad Samuelsen and Ola Tengesdal Lygre were excavating a dwelling used for housing slaves, when they identified what appeared to be twisted hedging wire at a depth of 20 centimetres.
Upon further inspection, the objects were revealed to be four heavy silver bracelets, each adorned with distinct decorative elements.
“This is definitely the biggest thing I have experienced in my career”, says archaeologist and project manager Volker Demuth from the Archaeological Museum at the University of Stavanger.
“This is a unique find, because we very rarely find such objects exactly where they were placed. As a rule, such valuable objects are discovered on fields that have been ploughed, where an object has been completely removed from its original context,” added Demuth.
According to the archaeologists, the hoard dates from around the 9th century AD and shares similarities to silver necklaces found in Hjelmeland in 1769. At that time, there were no silver mines operating in Norway, so all the silver used by the Vikings was sourced from abroad, obtained through trade, received as gifts, or taken as loot during their raiding expeditions.
Evidence of burning also indicates that the farmstead was destroyed by fire, likely during a time of conflict that required the necessity for the inhabitant’s valuables to be deposited in the ground for security.
Header Image Credit : Archaeological Museum at the University of Stavanger
Sources : Archaeological Museum at the University of Stavanger
This content was originally published on www.heritagedaily.com – © 2023 – HeritageDaily
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