| Summary: | On-land construction of most of the inexpensive elements of an impermeable durable “fabric” sea-dam separating the Mediterranean Sea from the North Atlantic Ocean will allow speedy installation and early finished facility first use. Despite the vast science-predicted geographical change, including climate change, within the existing Mediterranean Sea Basin we anticipate subsequent built sea-dam “close enough” near-maintenance of the regional environmental status quo; consider encouragement of in-Basin smaller adaptive macroprojects as well as an efficient and sparely organized International Caretaker Council operational authority to be established before 2050-2100 AD. With sea-locks and siphonic small-scale electric power generators allowing seawater inflows, the GSBB can match Basin evaporation with a compensating controlled seawater inflow from the North Atlantic Ocean, keeping most conditions as they are today. The Suez Canal’s single sea-lock will work similarly and in tandem with the GSBB. The engineering challenge is to handle a salty fluid that is > 800% denser than air! Successful performance of the GSBB will come in time if the macroproject’s planning, execution and handover are up to standard practice. If it judged a failure, the cost of its removal will not be financially onerous or prolonged in time.Keywords: Macro-engineering, artificially stabilized Mediterranean Sea, marine transgression, flexible sea-dam, future climate change, North Atlantic Ocean, navigational alterations, supportive macroproject components, GSBB.===========================================================================A construção em terra da maioria dos elementos baratos de uma barragem marítima de “tecido” impermeável e durável que separe o Mar Mediterrâneo do Oceano Atlântico Norte permitirá uma instalação rápida e uma utilização antecipada do sistema. Apesar da vasta mudança geográfica prevista pela ciência, incluindo as alterações climáticas, dentro da Bacia do Mar Mediterrâneo existente prevemos que a subsequente ...
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