Geophysical Setting
The coastal area of Tianjin municipality prior to development was dominated by mudflats, salt marshes (and salterns), and coastal shallows. This littoral zone is wide and slopes gently: the 0 m isobath (the intertidal flats) extends to 3–8 km from shore at a slope of 0.71–1.28%, the −5 m isobath extends 14–18 km from shore, and the −10 m isobath reaches 22–36 km from shore. These features make deep water navigation dependent on extensive dredging, but it also means that land reclamation is a cost-effective option for construction. Tianjin Port is thus by necessity largely man-made through dredging and reclamation.
Read more about this topic: Port Of Tianjin
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