Postglacial Black Sea Level Rising, Urban Development and Adaptation of Historic Places. The case study of the city-peninsula of Nesebar (Bulgaria) by Hristo Preshlenov

“…The values and relative chronology of the eustatic benchmarks corresponding to the destruction of the classical Mesambrian fortifications (third quarter of the 5th century BC) mark the coast during the regression in the middle of the first millennium BC; the route of the late Antique fortress wall (second quarter of the 5th century AD) identify the point of the rise in the sea level until the third quarter of the first millennium AD; the collapse of the northern aisle and the renewal of the monastery basilica of 'The Holy Mother of God Eleusa' in 1341/42 probably coincides with the first stages of the transgression in the second half of the second millennium AD, while the collapse of the church 'St Protomartyr Stephen' in 1855 appears to be shortly before a slow-down in this transgression. …”
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Mesambria Pontica – coevolution of maritime community and coastal landscape by Hristo Preshlenov

“…As a result of the negative geodynamic processes and, above all, the destructive sea abrasion and regional seismic activity, which have reworked the sea terrace, formed at 8–15 m and the shelf terrace up to the 4–5th isobath, the following sites and buildings have been brought down and “submerged” into the sea – most of the ancient and medieval fortifications, the northern nave of the basilica “The Holy Mother of God Eleusa”, the church of “St Protomartyr Stephen”, the temple of Zeus and Hera, an early Christian basilica, whose sacred space has been renewed by the church of “St George the Old”, and the ancient theatre. …”
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