For this reason, this
study aims to analyze the concentration ratios of bulk ports to reveal geographical
patterns, using the case of bulk ports along the west coast of Korea including, Incheon
Port (ICP), Pyeongtaek-Dangjin Port (PDP), and Gunsan Port (GSP). To examine and
shed more light to the above mentioned research issue, this paper adopts a series of
methods, such as Hirshmann-Herfindahl Index (HHI), Location Quotients (LQ), and
Shift Effects (SE)