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Soil erosion in Slovene Istria  [PDF]
Matija Zorn,Matja? Miko?
Geologija , 2009,
Abstract: From the end of nineties of the 20th century, intense hydrologic and geomorphologic research is taking place in the Slovene Istria. As a part of this research also studies on soil erosion were undertaken in the period from 2005 to 2008. The field measurements were under taken onclosed 1m2 large erosion plots under three different land uses (on bare soils in an olive grove, on an overgrown meadow, in a forest), placed south of the Marezige village in the Rokava River basin.We show weekly measurements of surface erosion (interrill erosion) for the period of 13 months (the end of March 2005 – the end of April 2006), as well as monthly and seasonal averages together with selected linear statistical correlations between soil erosion and weather parameters.From May 2005 to April 2006 the interrill erosion on bare soils in an olive grove with an inclination of 5.5° amounted to 9013 g/m2 (90 t/ha) that corresponds to surface lowering rate of 8.5 mm/yr; on an overgrown meadow with an inclination of 9.4° it amounted to 168 g/m2 (1,68 t/ha) that corresponds to surface lowering rate of 0.16 mm//yr; and in a forest with an inclination of 7.8° it amounted to 391 g/m2 (3,91 t/ha) and in a forest with an inclination of 21.4° it amounted to 415 g/m2 (4,15 t/ha), respectively, that corresponds to surface lowering rate of 0.4 mm/yr.
Janko lebinger, the Slovene bibliographer  [PDF]
Gregor Kocijan
Knji?nica : Revija za Podro?je Bibliotekarstva in Informacijske Znanosti , 2001,
Abstract: Dr. Janko lebinger is one of the most important Slovene bibliographers. During his forty years of active work, he has written numerous bibliographies: from (current) general and subject bibliographies to author bibliographies. He constituted the Slovene bibliography together with Simoni and therefore established conditions for rapid a development of the field after World War II. He was the creator of the modern Slovene bibliography, an expert bibliographer who was in line with bibliographical trends throughout the world and as such laid foundations for systematic and versatile activities in the field of bibliography writting. His most important works are the Slovene Bibliography 1907-1912 (1913) and Slovene Journals and Newspapers 1797-1936 (1937). The paper presents an assessment of lebinger's bibliographies from early to final works. These works are presented in chronological and subject order. Innovations and specialities introduced by lebinger as well as some deficiencies are emphasised.
Interesting gastropod Xenophora sp. from Istria
Rajko Pavlovec
Geologija , 1992,
Abstract: In Istria a snail of genus Xenophora was found with sutures covered with tests of foraminifer Assilina spira spira.
Structural curiosity of the northern Istria
Ladislav Placer
Geologija , 2005,
Abstract: In northern Istria certain structural particularities exist that till now were not explained,and some of them not even known. They are all associated with underthrusting of the Adriatic microplate (Istra) under the Dinarides. The Rokava fault of cross-dinaricdirection was discovered that exerts an important influence on hydrographic pattern in this part of Istria. The cross-dinaric sinistral strike-slip faults above Glin ica stream (Rosandra) are of local importance only, since at Kastelec and rni Kal the dextral strikeslip faults of NNW-SSE direction occur as their conjugated equivalents. This particular feature has been named the Gro ana (Grozzana) structure. The reason for such a structure is the echelon folding (complete folding) in the Istrian hinterland (the Kras-Notranjsko folded structure). In the Tinjan area a wedge shaped block occurs between two thrust faults that are turned up and quite steep owing to secondary folding. The wedge is open northwestward, and the flysch beds within it are folded in the cross-dinaric direction. Theyrepresent an indication of lateral squeezing in a limited area, since in the close-by roadcut of the Ankaran–Trieste motorway no trace of these folds remains (the Tinjan structure).In the Izola and Strunjan area a complex overthrust structure is present that rapidly wedges out toward central Istria. Indirect data suggest that it extends northwestward below the Bay of Trieste. The elements of this structure are the Izola thrust fault with Izolaanticline in the thrust block, and folds at Strunjan that were formed in the belt between the reverse overthrusts in the Strunjan bay and Izola thrust fault area (the Strunjan structure).
Extraction of thalweg networks from DTMs: application to badlands
N. Thommeret, J. S. Bailly,C. Puech
Hydrology and Earth System Sciences (HESS) & Discussions (HESSD) , 2010,
Abstract: To study gully spatial patterns in the badlands using a continuous thalweg vector network, this paper presents methods to extract the badlands' thalweg network from a regular grid digital terrain model (DTM) by combining terrain morphology indices with a drainage algorithm. This method will delineate a thalweg only where the DTM denotes a significant curvature with respect to DTM accuracy and relies on three major steps. First, discontinuous concave areas were detected from the DTM using morphological criteria, either the plan curvature or the convergence index. Second, the concave areas were connected using a drainage algorithm, which provides a continuous, thick, tree-structured scheme. We assumed that these areas were physically significant and corresponded to a gully floor. Finally, the thick path was reduced to its main course and vectorised to obtain a thalweg network. The methods were applied to both virtual and actual DTM cases. The actual case was a LiDAR DTM of the Draix badlands in the French Alps. The obtained networks were quantitatively compared, both with a network obtained using the usual drainage area criteria and with a reference network mapped in the field. The CI-based network showed the great potential for thalweg network extraction.
Robust extraction of thalwegs network from DTM: application on badlands
N. Thommeret,J. S. Bailly,C. Puech
Hydrology and Earth System Sciences Discussions , 2010,
Abstract: This paper presents methods to extract badlands thalwegs network from regular grid DTM by combining terrain morphology indices to a drainage algorithm. The computation of a continuous vector network will permit the study of the badlands spatial patterns. These methods aim at delineating a thalweg only where the DTM denotes a significant curvature with respect to DTM accuracy. It relies on three major steps. Firstly, discontinuous concave areas are detected from the DTM using morphological criteria; the plan curvature and the convergence index. Secondly, the concave areas are connected using a drainage algorithm which provides continuous and tree-structured thick scheme. We assume that these areas present physical significance and correspond to a gully floor area. Finally, the thick path is reduced to its main curve and vectorised to obtain a thalwegs network. The methods are applied on both virtual and actual cases DTM. The actual case is a LiDAR DTM of Draix Badlands (French Alps). The obtained networks are quantitatively compared both to the one obtained with usual drainage area criteria and to a reference network. The networks comparison shows the great potential of the convergence index based method for thalwegs network extraction.
Lophoraninas from Eocene beds in central Istria, Croatia  [PDF]
Vasja Miku?
Geologija , 2010,
Abstract: In the contribution remains of Middle Eocene crabs of species Lophoranina marestiana (K nig, 1825) from environsof the small village of ]opi near Pi}an in central Istria, Croatia, are considered. Remains of their carapaceswere found in Lutetian carbonates occuring within the thick Paleogene flysch beds sequence. Individuals of thementioned taxon are relatively abundant of skeletons and casts of smaller and larger organisms of diverse paleontologicalgroups.
The bases for understanding of the NW Dinarides and Istria Peninsula tectonics
Ladislav Placer,Marko Vrabec,Bogomir Celarc
Geologija , 2010,
Abstract: Thrust structure of the northeastern part of the External Dinarides is depended upon paleogeography of the Adriatic–Dinaric Mesozoic Carbonate Platform, which was in the southeast (in the recent position) composed of Dinaric and Adriatic segment with intermediate Budva Trough. In the northwest in the area of the present Slovenia, it represents uniform platform. In the northwestern continuation of the Budva Trough, shallow halftrough formed and more to the west, shallow Friuli Paleogene Basin came in to being, which separated so called Friuli Carbonate Platform from the central part of the carbonate platform. Area of Istria was separated from Adriatic segment with Kvarner Fault, originated already in the Mesozoic.External Dinaric Thrust Belt formed in the finalphaseoftheDinaridesoverthrusting.ItoriginatedfromDinaricsegment of the Mesozoic Carbonate Platform at the end of the Eocene and was thrusted on the Adriatic segment of the Mesozoic Carbonate Platform. Whole process also triggered formation of the External Dinaric Imbricate Belt with Thrust Front of the External Dinarides against Adriatic-Apulian Foreland. Later also represents rigid indenter of the Adria Lithospheric Microplate (“Adria”), and External Dinaric Imbricate Belt represents its deformed margin, therefore we place it to the rigid indenter.Segmentation of the “Adria” occurred in the Miocene or later. It roughly disintegrated in the Padan and Adriatic part along Kvarner Fault. During rotation of the Padan part in the counter clockwise sense, the corner part, representing Istria Peninsula, rotated and underthrusted towards northeast under External Dinarides. As a result, Istria-Friuli Underthrust Zone formed, structurally conditioned with the position of the Friuli Paleogene Basin, and vast Istria Pushed Area between Southern Alps, Velebit Mts. and elimlje Fault. This process is still active recently.During Istria underthrusting and pushing in the northwest direction, Ra{a Fault and Thrust Front of the External Dinaric Thrust Belt bended, and as a consequence, strike-slip movements along those planes were hindered. From the tip of the Kvarner Bay towards Idrija and Ravne Faults in the Upper So~a Valley, conditions for formation of the en echalon strike-slip belt were set up. The strike-slip belt is definedwithsegmentoftheRa{a Fault southeast from Ilirska Bistrica, seismically active area between Ilirska Bistrica – Hru{evje stretch, Vipava Fault, Predjama Fault and northwestern part of the Idrija and Ravne Fault. Therefore we postulate, that a segment of the External Dinaric Thrust Belt Fron
Cyrtorhina globosa from Middle Eocene beds of ]opi in Istria, Croatia  [PDF]
Vasja Miku?
Geologija , 2010,
Abstract: The contribution contains the description and presentation of carapax remain of crab species Cyrtorhina globosaBeschin, Busulini, De Angeli & Tessier 1988, found in Middle Eocene – Lutetian beds near the ]opi settlementin central Istria, Croatia.
SUSTAINABLE DEVELOPMENT OF HIGHLY TOURISTIC REGION OF ISTRIA  [PDF]
Jasmina GRZINIC
Management & Marketing , 2010,
Abstract: As the scale of tourism grows, the resource use threatens to become unsustainable. Withought environmental responsibility the levels of cheaper mass tourism will increase, forcing more “nature-based” tourism to move on to new destinations. This scenario is opposite to the “Croatian Tourism Development by 2010” strategy. With a favourable geographic position, almost at the heart of Europe, Istria has always represented a bridge connecting the Middle European continental area with the Mediterranean. This area is the most visited Croatian tourist region with 27% of all visitors and 35% of time spent in all of Croatia. The Croatian National Bank’s preliminary figures for 2007 show that international tourism generated 18.4% of Croatian GDP. For these reasons the Istrian tourism industry can not ignore environmental issues in its management and requires the informed participation of all relevant stakeholders (according to the Agenda 21 for tourism industry). Properly planned tourism development, combined with environmental protection, produces the concept of sustainable tourism. Environmentally sustainable form of tourism represents a step forward from "sea and sun" mass tourism developed at the coastal part of Istria. There are a myriad of definitions for Sustainable Tourism, including eco-tourism, green travel, environmentally and culturally responsible tourism, fair trade and ethical travel. Mentioned selective tourism forms are adopted as the concept of the present and future Istrian destination development.
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