For Yous Data - Unravelling The Complex History Of The Lost Harbour Of Pisa

New insights into the development as well as eventual disappearance of Portus Pisanus, the lost harbour of Pisa, are reported inwards Scientific Reports this week.

The ancient port inwards a bas-relief on the Tower of Pisa [Credit: Sailko]

Although it has been described equally 1 of Italy’s most influential seaports during the Roman as well as Middle Ages, niggling is known most the human relationship betwixt Portus Pisanus’s surroundings as well as the principal stages of its history.

The access surface area to the Porto Pisano, immediately completely silted up, nigh Livorno [Credit: ANSA]

To sympathize the utilisation that long-term coastal dynamics, sea-level ascension as well as a changing surroundings played inwards the harbour’s evolution, David Kaniewski as well as colleagues reconstructed relative bounding main levels for the eastern Ligurian Sea over a 10,500-year period. They equally good coupled historical maps amongst geological information to reconstruct the morphology of the coast about the Pisa harbour basin.

Roman rock quay as well as wooden poles, earthworks S. Stefano ai Lupi
[Credit: Stefano Genovesi]

They as well as then analysed biological samples from sediment layers to investigate how seawater, freshwater or agricultural activities may accept influenced the surroundings inwards the area, earlier comparison as well as contrasting their information amongst written sources as well as archaeological data.

Subsoil sequence analysed inwards item [Credit: Veronica Rossi]

The findings propose that at some 200 BC, a naturally protected lagoon amongst a skillful connector to the bounding main developed southward of the metropolis of Pisa that would accept benefited navigation as well as trade, as well as facilitated the institution of port complexes.

Roman-era seabed, archaeological earthworks at S. Stefano ai Lupi [Credit: Stefano Genovesi]

The lagoon hosted Portus Pisanus good beyond the fifth century AD simply its score of bounding main connector began to turn down from about 1000-1250 AD, equally coastlines shifted towards the sea.

The Meloria tower off the coast of the Pisan Port inwards 1284 [Credit: Filippo Gini]

It was cutting off from the bounding main as well as disappeared about 1500 AD when the basin developed into a coastal lake as well as Portus Pisanus was replaced past times the maritime harbour of Livorno.

Source: Nature Eurasia [August 24, 2018]


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