| 1. |
- Isaksson, Sven, 1966-, et al.
(författare)
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Arkeologiska undersökningar av Birkas försvunna stadsvall, fornlämning L2017:1568, Raä 119:1, Svarta jorden, Björkö, Adelsö sn, Ekerö kn, Uppland, maj 2018 och maj 2019
- 2020
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- This is a report of archaeological investigations, excavations and geochemical propections, in search for the today lost part of the town rampart of the Viking Age site Birka in eastern central Sweden, conducted by the Archaeological Research Laboratory, Stockholm University, in 2018-2019. The results show, for the first time ever, evidence of a town rampart with an associated defensive ditch in the investigated portion of the town perimeter. This is inferred to be the result of deliberate choices to build different types of defensive structures with regard to the varying terrain in different sections around Birka, indicating explicit tactical considerations when choosing construction technology.
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| 2. |
- Isaksson, Sven, 1966-, et al.
(författare)
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Birkas norra hamnområden : Arkeologiska undersökningar av maritim lämning inom Gravfält L2017:1904, Birka, Björkö, Adelsö sn, Up., maj 2022
- 2024
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- This report presents the results of archaeological investigations of maritime remains on the northern part of Björkö in Lake Mälaren, in connection with L2017:1904, Adelsö parish, in Uppland. The investigations included surveys, geochemical analyses and excavations as well as a topographic investigation of the so-called Salviksgropen. The results of a ground penetrating radar survey and an osteoarchaeological analysis of the bone material from the 2020-2021 excavations of a shipyard site are also discussed. The investigations were carried out by the Archaeological Research Laboratory, Department of Archaeology and Classical studies at Stockholm University. The results show that the stone row, which in the previous survey was referred to as the possible remains of a jetty or boat landing site, probably constituted a breakwater, as well as a landing site, that was constructed to protect the adjacent shipyard site. The osteological analysis shows that the bone material consists of food remains, and a possible place for food preparation is indicated by the soil chemical analyses. The same analysis also points to a possible site for blacksmithing activities associated with the shipyard site. The georadar survey shows traces of ploughed-over burial mounds, indicating that the cemetery Hemlanden surrounded the shipyard site on all sides. The height mapping of the potential harbour arms at Salviksgropen shows that these, as they look today, are too low in the landscape in relation to the maritime remains at Korshamn to have had this function.
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| 3. |
- Isaksson, Sven, 1966-, et al.
(författare)
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En vikingatida varvsplats vid Kugghamn, Birka : Arkeologiska undersökningar av L2022:2719, Birka, Björkö,Adelsö socken, Uppland, augusti 2020 och 2021
- 2022
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- A Viking Age shipyard at Kugghamn, Birka.This is a report of an archaeological investigation of maritime remains close to and connected to the Viking Age town of Birka on Björkö, Uppland, Sweden. The investigations included surveys using GNSS receivers and drones, geochemical mapping, and the excavation of four trenches, carried out in August 2020 and August 2021. The investigations were carried out by the Archaeological Research Laboratory (AFL), Department of Archaeology and Classical Studies, Stockholm University. The results show that there was an extensive maritime cultural landscape on the northern part of Björkö, which is rich in remains of different character. One of these remains was investigated in detail by the excavation of four trenches. The feature consists of a dug-out hollow, lined with stones at sides and bottom. Evidence of a wooden contraction was found in the bottom of the hollow in the form of small post-holes, and a stone-frame at the mouth of the hollow towards the waterfront. This is interpreted as the remains of a boat slipway. Rivets, both used and unused, tools for carpentry, and slate whetstones, dominate among the finds and mirror the activities of the site. All is interpreted as evidence for a boat repair site with an associated boat slipway. Finds of e.g. glass beads contemporary with the town Birka, provides a general dating of the remains, possibly with an emphasis towards its later phases of the town. This maritime construction is a unique find with few parallels, but fits well with the other maritime remains in the area. In order to understand its function and dating, it is vital to continue investigations in this important area of Björkö.
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| 4. |
- Eriksson, Niklas, 1976-, et al.
(författare)
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The Maderö wreck : a ship loaded with bricks from Lübeck sunk in the Stockholm Archipelago in the late 15th century
- 2024
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Ingår i: International Journal of Nautical Archaeology. - 1057-2414 .- 1095-9270.
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Tidskriftsartikel (refereegranskat)abstract
- The Maderö wreck was discovered in the 1960s in the Stockholm Archipelago, Sweden. An archaeological investigation undertaken in 2022 included the inspection and documentation of visible ship parts, sampling for dendrochronological analysis and sampling for ICP analysis from the brick cargo. The results show that the wood originates from the Baltic Sea area and was felled after 1467, while the clay for the brick originates from the Mecklenburg-Vorpommern area. The ship's technical analysis shows that it is a large clinker-built merchant ship. Traces of iron on a recovered stone shot indicate that the ship was armed when it sank.
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| 5. |
- Fjellström, Markus, 1987-, et al.
(författare)
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Ett ovanligt skidfynd från Låktatjåhkkå- / Loktačohkkaglaciären, Sápmi : Skidbruk, vallning, 14C-datering och lipidanalyser
- 2021
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Ingår i: META - Historiskarkeologisk tidskrift. - : Historiskarkeologiska. - 2002-0406 .- 2002-388X. ; , s. 53-66
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Tidskriftsartikel (refereegranskat)abstract
- An unusual ski from the Låktatjåhkå / Loktacohkka glacier in Sápmi – Use, wax, 14C and lipid residue analysis: Archaeological skis dated from the Stone Age to today, are not unusual finds in bogs and wetlands. They are found all over Sápmi, from Norway to the Kola peninsula in the Russian federation. Skis are also represented in rock art at different sites in Sápmi and mentioned in written sources; however, skis found at higher altitudes, at glaciers and perennial snow patches, are not as common. In 2018, nine kilometers west of Björkliden, a fragment of a ski was found by the Loktačohkka glacier. The ski fragment was first 14C-dated to the 15th century; however, presence of vax on the fragment presented an interesting problem. A new 14C analysis of the ski fragment, with the wax components removed, now dated the cellulose from the ski to 1645–1916 CE, i.e. the ski could have been used some time from circa 1645 into the first half of the 20th century. This study highlights the importance of regular surveys of melting glaciers and snow patches to retrieve organic material melting out, as well as the importance of investigating what components wood could have been impregnated with.
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