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Istanbul and other nearby areas are at risk of a devastating 7.1 to 7.4-magnitude earthquake, a seafloor survey has revealed.
Turkey's capital lies near the North Anatolian fault, which wreaked havoc on the city in 1766 with a 7.5 magnitude tremor, killing thousands.
Researchers - Risk - Tremors - Area - Closest
Researchers have long struggled to detect the risk of tremors in the area closest to the metropolis as the fault lies beneath the Sea of Marmara.
A study spanning two-and-a-half years has shown the area is locked, meaning tectonic strain which could lead to an earthquake is building up in the area.
Methods - Strain - Plates - GPS - Methods
Current methods for monitoring the strain on tectonic plates involves GPS or land-surveying methods, which are impossible in this area as satellite signals cannot penetrate to the depths required.
But now scientists at the GEOMAR Helmholtz Centre for Ocean Research Kiel in Germany have developed a method for following movements on the seabed.
GeoSEA - System - Distances - Researchers - Deformation
The GeoSEA system measures acoustic distances on the seabed so researchers can precisely measure crustal deformation.
Two-and-a-half years worth of measurements have...
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