Duljine obalne crte i površine otoka na hrvatskom dijelu Jadranskog mora određene sa topografskih karata mjerila

Tea Duplančić Leder,Tin Ujević,Mendi Čala

doi:10.15291/geoadria.127

Abstract

In this paper, modern definition of island established by the IHO has been accepted, and classification of islands, islets, rocks and rocks awash has been proposed according to their areas. The coastline of the Croatian part of the Adriatic Sea was digitized from topographic maps produced at the scale of 1 : 25 000 (TM 25). Topographic maps used for digitization are more precise than the maps that were used in earlier works and consequently the data on the number of islands and their coastline lengths and areas are more precise. Polygons of islands were closed in GIS package AutoCAD Map 2000, and each was given its name. From the obtained database and classification of islands, islets and rocks, in the coastal sea area of the Republic of Croatia 79 islands, 525 islets, and 642 rocks and rocks awash, or a total of 1246 have been recorded. Furthermore, it has been established that on TM 25 the island of Cres has the largest area (405.70 km2), although in literature so far (including atlases) the island of Krk was most often cited as the largest island in the Adriatic Sea. The island of Pag has the longest coastline length of 302.47 km.

Highlights

Croatian part of the Adriatic Sea comprises the coastal sea area from the Bay of Piran in the northwest, to the middle of outer part of the Bay of Kotor in the southeast, excluding the 23,975 km long coastline section near Neum which belongs to the Republic of Bosnia and Herzegovina (RIĐANOVIĆ, BIĆANIĆ, 1993)
The purpose of this paper is to present the results of calculations of coastline lengths and areas of islands, islets and rocks in the Croatian part of the Adriatic Sea, according to the categorization suggested by Duplančić Leder et al (2000 a, b)
Categorization and classification of islands, islets, rocks and rocks awash in the Croatian part of the Adriatic Sea was taken from Duplančić Leder et al, (2000a, b) according to their areas

Summary

Introduction

Croatian part of the Adriatic Sea comprises the coastal sea area from the Bay of Piran (the Dragonja river mouth) in the northwest, to the middle of outer part of the Bay of Kotor in the southeast, excluding the 23,975 km long coastline section near Neum which belongs to the Republic of Bosnia and Herzegovina (RIĐANOVIĆ, BIĆANIĆ, 1993). According to Klemenčić (1992), the land area (without islands) of the Republic of Croatia is 56,609.59 km and the coastal sea area (with islands) about 33,200 km. Internal waters of the Republic of Croatia comprise ports and bays on the coastline of land and islands, and sea parts between the low water line on the coastline and baseline. Baseline is the line between mean low water along the coast of land and islands, straight baseline closing the entrances to ports and bays, and straight baseline which connects the defined points along the coast of land and islands (POMORSKI ZAKONIK, NN 17/94). Croatian territorial sea spreads from the baseline of internal waters towards the continental shelf boundary up to a distance of 12 M (Fig. 1)

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Conclusion