Although natural basis cannot be a decisive criterion in defining borders, historical and politico-geographic development of the researched area reveals that natural bounds have been considerably ...used in the boundary demarcation between the Republic of Croatia and Republic of Slovenia. This can be also concluded for the analyzed sectors which are tied with the Žumberak Mountain and the Kupa and Čabranka River valleys. Besides natural favours (the boundary line runs over the top ridges of the mountain massif of Žumberak/Gorjanci, as well as along the river flows), one must point out the fact that it is adapted to spatial organization of the borderland. Therefore, the boundary line is subsequent and co-operative here. Evolutionally, the border and borderland developed from terra nullius, frontier, and, finally, since the 16th century, have become a boundary line on the rivers Kupa and Čabranka, and since 1816, on Žumberak. Consequently, in spite of disputes in particular historical periods about the researched area's state and property appurtenance, the border has a centuries-old continuity. This can explain that nowadays the quoted sectors are least disputable in the boundary demarcation of the two sovereignties.
Although natural basis cannot be a decisive criterion in defining borders, historical and politico-geographic development of the researched area reveals that natural bounds have been considerably ...used in the boundary demarcation between the Republic of Croatia and Republic of Slovenia. This can be also concluded for the analyzed sectors which are tied with the Žumberak Mountain and the Kupa and Čabranka River valleys. Besides natural favours (the boundary line runs over the top ridges of the mountain massif of Žumberak/Gorjanci, as well as along the river flows), one must point out the fact that it is adapted to spatial organization of the borderland. Therefore, the boundary line is subsequent and co-operative here. Evolutionally, the border and borderland developed from terra nullius, frontier, and, finally, since the 16th century, have become a boundary line on the rivers Kupa and Čabranka, and since 1816, on Žumberak. Consequently, in spite of disputes in particular historical periods about the researched area's state and property appurtenance, the border has a centuries-old continuity. This can explain that nowadays the quoted sectors are least disputable in the boundary demarcation of the two sovereignties.
On the central part of the Velebit Mountain the traces of the Pleistocene glaciation have been found. The domination of the dissected relief, characterized by numerous elevations and depressions, in ...the conditions of low temperatures and richess of snow precipitation during the Pleistocene were a very good predisposition tor glaciation development on the central part of the Velebit Mt.
Autori daju kratak osvrt na tijek istraživanja geomorfoloških tragova pleistocenske oledbe na sjevernom i srednjem Velebitu. Rezultati istraživanja publicirani su u Geografskom glasniku i Senjskom ...zborniku.
Razglobiti će se geomorfološke osobine i razvoj korita Drave (108-115 km od ušća) i njenog poloja. Naglasak u radu će biti na morfogenezi poloja i korita tijekom posljednja dva stoljeća, kada su ...izvršeni najznačajniji regulacijski i melioracijski radovi. Uz mlađe tektonske pokrete, ragulacijski i melioracijski radovi su imali velikog utjecaja na izmjenu intenziteta erozijskih i akumulacijskih procesa i na oblikovanje uzdužnog i poprečnog profila vodotoka, te reljefa poloja.
The Baške Oštarije karst polje is stretching out at the direction E - W at lenght of 3,75 km, while the width is varying from 0,25 to 2,0 km. It divides central from the south part of the Velebit ...mountain and it is formed at the contact of two orographic wholes. Besides karst and fluvio-karst processes, the derasion and periglacial processes have been most expressed at the relief formation. The water which flows down from edge parts of polje has great importance in relief formation because of its corrosional aggressivity.
The area of the Risnjak mountain massif is a submorphologicalregion - part of the mesomorphological region of the south-westernGorski Kotar. This area exceeds 1,500 metres in height. In the ...reliefstructure of the massif, the system of ranges and erosion surfaces -plateaux has been formed on the folded block, mostly carbonate baseby subsequent microtectonic activity and exoomorphological processes.Such relationships of relief under conditions of exceptionally lowtemperatures and abundance of snow precipitation during the Pleistocene,were prerequisites for the development of glaciation. Glaciationof the mountain massif was marked by formation of the valley,plateau and cirque glaciers, which is proved by the discovery of glacial moraines and other morphological features and corresponding sediments.
The Una River Valley has complex characteristics defined by the interchange of gorges, basins and valley extensions. The river has adapted itself to the primary geologic structure and to the activity ...of tectonic movements. The longitudinal profile of the river is the result of numerous rapids, cascades and waterfalls, the formation of which is connected with calcareous sinter accumulation. Morphogenetic analysis has shown that a series of very attractive and strange relief forms is being formed in the riverbed of the River Una such as calcareous sinter barriers, sinter riverbeds, calcareous sinter islands and caves.