An assessment of site suitability for marina construction in Istanbul, Turkey, using GIS and AHP multicriteria decision analysis

Abstract

Marinas play a key role in sea transportation and tourism. The problem of an insufficient marina capacity has revealed in terms of sea traffic due to the demographic structure and increasing tourism potential of Istanbul which is the biggest metropolitan city of Turkey and has around 600-km-long coastline. Therefore, the study area is mainly focused on the Marmara Sea shoreline of Istanbul. Rather than traditional methods, a rapid and cost-effective solution which considers natural and urban environment conditions is essential to satisfy the need for a marina site selection. Thanks to the latest improvements in geographic information systems, it is convenient to perform location selection analysis of marinas taking advantages of geology, land use, demography and accessibility data sets. The goal of this study is to define the areas that are appropriate for building marinas, with the use of topographic and demographic data in a present shoreline applying analytical hierarchy process multicriteria decision-making method. In this study, erosion, landslide, tsunami, land use, geologically hazardous areas, transfer lines, sea traffic data, neighbourhood scale population, age patterns and house income data have been used. Analytical hierarchy process method is used to give a weight to each data set, and a grading system has been developed for the area selection of marinas. The result maps of the analysis that show study area as classified into four categories from good to not suitable are presented. It is possible to create a decision support system for upper scale plans that enable authorities to perform analysis accurately, cost and time effectively using the proposed methodology that integrates multiple data sets with different scales and types.

Multicriteria Evaluation of Tourism Potential in the Central Highlands of Vietnam: Combining Geographic Information System (GIS), Analytic Hierarchy Process (AHP) and Principal Component Analysis (PCA)

“…The results of district-wide tourism areas range from 0 to 53. The potential is classified into 5 levels: "no potential" (evaluation scores 0-10), "low potential" (10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20), "medium potential" (20)(21)(22)(23)(24)(25)(26)(27)(28)(29)(30), "high potential" (30)(31)(32)(33)(34)(35)(36)(37)(38)(39)(40), and "very high potential" (40)(41)(42)(43)(44)(45)(46)(47)(48)(49)(50)(51)(52)(53). Figure 5 shows the zones according to their tourism potential.…”

“…Analytic Hierarchy Process makes it possible to facilitate multicriteria decision-making with respect to environmental impact assessment, landscape assessment, tourism assessment, and economic evaluation [40][41][42][43]. This technique decomposes the decisions in the process according to a hierarchical assessment system which includes criteria, sub-criteria, and alternatives [44,45]. The outcomes of AHP are a set of weights reflecting the relative importance of the alternatives.…”

Assessing the carrying capacity of Perinereis aibuhitensis in a Chinese estuarine wetland using a GIS-based habitat suitability index model

“…An HSI model can quantitatively measure habitat quality and suitability using knowledge of the species' normal growth and reproduction habitat requirements (Hickey 2008, Knudson et al 2015. In the present study, the HSI value is the sum of each parameter factor SI multiplied by the corresponding weight (Wang et al 2008b, Acevedo & Cassinello 2009, Gumusay et al 2016). The HSI model algorithm was as follows: (1) where SI i is the suitability index value of a specific factor according to Fig.…”

A Multicriteria Model to Evaluate Strategic Plans for the Nautical and Naval Industry in Cartagena de Indias, Colombia

“…The use of AHP in this sector includes the capacity evaluation of several ports for the location of a port facility [37]; planning of a transport infrastructure [50]; and the selection of the location for the construction of a marina [19].…”

“…Much like other coastal cities, several controversies have been generated in Cartagena over the expansion and placement of new nautical facilities, considering the high urban density in some areas, the involved areas protection, new activities development and the enhancement of the already existing activities. These actions sometimes contradict each other and compete for the same limited resources and/or spaces [7,18,19]. Thus, in terms of planning and management of local development, it is very important to identify places for the location and expansion of nautical and naval facilities in adequate areas in the coastal zone, so it is essential to adopt an integrated approach to address these multifaceted issues [2].…”