– We have assembled data on 13 cases of meteorite falls with accurate tracking data on atmospheric passage. In all cases, we estimate the bulk strength of the object corresponding to its earliest ...observed or inferred fragmentation in the high atmosphere, and can compare these values with measured strengths of meteorites in the taxonomic class for that fall. In all 13 cases, the strength corresponding to earliest observed or inferred fragmentation is much less than the compressive or tensile strength reported for that class of stony meteorites. Bulk strengths upon atmospheric entry of these bodies are shown to be very low, 0.1 to approximately 1 MPa on first breakup, and maximal strength on breakup as 1–10 MPa corresponding to weak and “crumbly” objects, whereas measured average tensile strength of the similar meteorite classes is about 30 MPa. We find a more random relation between bulk sample strength and sample mass than is suggested by a commonly used empirical power law. We estimate bulk strengths on entry being characteristically of the order of 10−1–10−2 times the tensile strengths of recovered samples. We conclude that pre‐entry, meter‐scale interplanetary meteoroids are typically highly fractured or in some cases rubbly in texture, presumably as a result of their parent bodies’ collisional history, and can break up under stresses of a few megapascals. The weakness of some carbonaceous objects may result from very porous primordial accretional structures, more than fractures. These conclusions have implications for future asteroid missions, sample extraction, and asteroid hazard mitigation.
This paper summarizes the observation of the Potoška planina landslide, which is located in the Karavanke mountain range in NW Slovenia. The landslide lies at the tectonic contact between the Upper ...Carboniferous and the Permian clastic rocks, and the Upper Triassic to Lower Jurassic carbonate rocks. Due to active tectonics, the clastic rocks are heavily deformed and, consequently, highly prone to fast and deep weathering. The carbonate rocks are also highly fissured due to tectonic disturbances, which result in large quantities of talus and scree material covering the part below the crown. A greater spatial density of springs and wetlands, supplied from the infiltration, is evident at the contact between scree and clastic rocks. Due to prevailing geological, tectonic and hydrological conditions, the Potoška planina area is highly prone to different slope mass movements. This paper presents the monitoring of surface movement patterns at the toe of the Potoška planina landslide. The sliding mass is composed of tectonically deformed and weathered Upper Carboniferous and Permian clastic rocks covered with a large amount of talus material, which is unstable and prone to landslides. Additionally, the Bela torrent causes significant erosion and increases the possibility of mobilization of the sliding mass downstream. Based on said conditions and field survey work, the toe of the landslide is considered to be the most active part of the landslide. In order to estimate surface movement patterns over a monitoring period of 22.5 months and five reconnaissance campaigns, periodic monitoring was conducted using unmanned aerial vehicle (UAV)-based photogrammetry, which provides high-resolution images and tachymetric geodetic measurements that enable accurate control of photogrammetric analysis of surface displacements. Using the results of said periodic monitoring, analyses of UAV-based displacement patterns, surface elevations and volume changes were all modelled for four observation periods. According to our results, the movement pattern at the toe of the Potoška planina landslide indicates a steadily downslope movement of the entire area with localized surges superficial slips.
– We report an analysis of instrumental observations of a very bright fireball which terminated with a meteorite fall near the town of Jesenice in Slovenia on April 9, 2009, at 0h59m46s UT. The ...fireball designated EN090409 was recorded photographically and photoelectrically by two southern stations of the Czech part of the European Fireball Network (EN). Simultaneously, a part of the luminous trajectory was also captured by two all‐sky CCD systems and one video camera of the Slovenian meteor network. In addition to these optical recordings, the sonic booms produced by the Jesenice fireball were detected at 16 seismic stations located within 150 km of the trajectory. From all these records, we reconstructed the fireball’s atmospheric trajectory, basic geophysical data, the possible impact area, and the original heliocentric orbit of the meteoroid. Using a detailed fireball light curve, we modeled the atmospheric fragmentation of the meteoroid. Both the atmospheric behavior and the heliocentric orbit proved to be quite normal in comparison with other observed meteorite falls. The Jesenice orbit is markedly different from the Příbram and Neuschwanstein orbital meteorite pair, which fell on similar dates (April 7, 1959, and April 6, 2002, respectively). Three meteorites with a total weight of 3.6 kg (until April 2010) were found in a high mountain area near the town of Jesenice. They are classified as L6 ordinary chondrites (Bischoff et al. 2010).
Persistent scatterer interferometry (PSI) is capable of millimetric measurements of ground deformation phenomena occurring at radar signal reflectors (persistent scatterers, PS) that are phase ...coherent over a period of time. However, there are also limitations to PSI; significant phase decorrelation can occur between subsequent interferometric radar (InSAR) acquisitions in vegetated and low-density PS areas. Here, artificial amplitude- and phase-stable radar scatterers may have to be introduced. I2GPS was a Galileo project (02/2010–09/2011) that aimed to develop a novel device consisting of a compact active transponder (CAT) with an integrated global positioning system (GPS) antenna to ensure millimetric co-registration and a coherent cross-reference. The advantages are: (1) all advantages of CATs such as small size, light weight, unobtrusiveness and usability with multiple satellites and tracks; (2) absolute calibration for PSI data; (3) high sampling rate of GPS enables detection of abrupt ground motion in 3D; and (4) vertical components of the local velocity field can be derived from single-track InSAR line-of-sight displacements. A field trial was set to test the approach at a potential landslide site in Potoška planina, Slovenia to evaluate the applicability for operational monitoring of natural hazards. Preliminary results from the trial highlight some of the key considerations for operational deployments in the field. Ground motion measurements also allowed an assessment of landslide hazard at the site and demonstrated the synergies between InSAR and GPS measurements for landslide applications. InSAR and GPS measurements were compared to assess the consistency between the methods from the slope mass movement detection aspect.
This paper provides documentation of the Late Carboniferous flora of the Southern Karavanke Mountains in Slovenia that is housed in the Gornjesavski Muzej (Upper Sava Museum) in Jesenice, Slovenia. ...The paleoflora from this area has not been systematically documented until today. 21 fossil-species, which probably represent 17 biological species, were identified. Common species include Sigillaria brardii Brongniart, Lepidodendron dissitum Sauver, Annularia carinata Gutbier, Calamites undulatus Sternberg, Sphenophyllum oblongifolium (Germar and Kaulfuss) Unger, Acitheca polymorpha (Brongniart) Schimper and Nemejcopteris feminaeformis (Schlotheim) Barthel. Stratigraphically important are Sphenophyllum oblongifolium and Nemejcopteris feminaeformis, and based on their occurrence we can assume the studied paleoflora to be Gzhelian D (Jigulites jigulensis zone on the Russian Platform), i.e. Stephanian C
Jesenice-A new meteorite fall from Slovenia BISCHOFF, Addi; JERSEK, Miha; GRAU, Thomas ...
Meteoritics & planetary science,
June 2011, Letnik:
46, Številka:
6
Journal Article
Recenzirano
– On April 9, 2009, at 3:00 CEST, a very bright fireball appeared over Carinthia and the Karavanke Mountains. The meteoroid entered the atmosphere at a very steep angle and disintegrated into a large ...number of objects. Two main objects were seen as separate fireballs up to an altitude of approximately 5 km, and witnesses reported loud explosions. Three stones were found with a total weight of approximately 3.611 kg. The measured activity of short‐lived cosmogenic radionuclides clearly indicates that two specimens result from a very recent meteorite fall. All cosmogenic radionuclide concentrations suggest a rather small preatmospheric radius of <20 cm; a nominal cosmic‐ray exposure age based on 21Ne is approximately 4 Ma, but the noble gas and radionuclide results in combination indicate a complex irradiation. Jesenice is a highly recrystallized rock with only a few relic chondrules visible in hand specimen and thin section. The texture, the large grain size of plagioclase, and the homogeneous compositions of olivines and pyroxenes clearly indicate that Jesenice is a L6 chondrite. The bulk composition of Jesenice is very close to the published average element concentration for L ordinary chondrites. The chondrite is weakly shocked (S3) as indicated by the undulatory extinction in olivine and plagioclase and the presence of planar fractures in olivine. Being weakly shocked and with gas retention ages of >1.7 Ga (4He) and approximately 4.3 Ga (40Ar), Jesenice seems not to have been strongly affected by the catastrophic disruption of the L‐chondrite parent body approximately 500 Ma ago.
Provider: - Institution: - Data provided by Europeana Collections- Dokument predstavlja vabilo na odprtje razstave in predstavitev knjižice Kako smo na Jesenicah doživljali osamosvajanje Slovenije. ...Nastala je ob 30-letnici samostojne Slovenije. Sledila bo prva Torkova kinoteka s projekcijo dokumentarnega filma Osvobajanje Zgornje Gorenjske. Prireditev bo v torek, 6. julija 2021, ob 20. uri v Banketni dvorani Kolpern na Stari Savi. Potekala bo v organizaciji Občinske knjižnice Jesenice, Ljudske univerze Jesenice in Gornjesavskega muzeja Jesenice. - All metadata published by Europeana are available free of restriction under the Creative Commons CC0 1.0 Universal Public Domain Dedication. However, Europeana requests that you actively acknowledge and give attribution to all metadata sources including Europeana
Provider: - Institution: - Data provided by Europeana Collections- Vsebino dokumenta predstavlja zgodba Strah, ki jo je napisal Stane Arh in je objavljena v knjižici Kako smo na Jesenicah doživljali ...osamosvajanje Slovenije.Gre za zgodbo inženirja Staneta Arha, ki se spominja zaključevanja študija v Kragujevcu junija 1991 in dogajanj med vojno za Slovenijo. Najprej opiše svoja prizadevanja, da bi zaključil magistrski študij iz varstva pred sevanji in zagovor specialistične naloge v Kragujevcu zadnji vikend pred osamosvojitvijo Slovenije. Po povratku domov se je začela vojna za Slovenijo med katero je odpeljal ostarelo nono, ki je bila na obisku pri hčeri v Ljubljani, na njen dom v Koper. Ko se je vrnil domov je tu našel le trinajstletnega sina, ki mu je povedal, da je mama z drugima dvema otrokoma odšla v Avstrijo. Avtor opiše svoje iskanje in prizadevanja, da bi družino pripeljal iz Železne Kaple domov v Slovenijo kar mu je tudi uspelo.Dokument vsebuje fotografijo Staneta Arha na Rudniku urana Žirovski vrh (Hrani: Stane Arh).- All metadata published by Europeana are available free of restriction under the Creative Commons CC0 1.0 Universal Public Domain Dedication. However, Europeana requests that you actively acknowledge and give attribution to all metadata sources including Europeana
Provider: - Institution: - Data provided by Europeana Collections- Vsebino dokumenta predstavlja zgodba Srečno, moja Slovenija, ki jo je napisal Niko Kešina in je objavljena v knjižici Kako smo na ...Jesenicah doživljali osamosvajanje Slovenije.Gre za zapis Nika Kešine, ki se je na Jesenice priselil iz Bosne, si tukaj ustvaril družino, se boril za samostojno Slovenijo in kot eden prvih postal državljan Slovenije, 25. marca 1991. Avtor v uvodu obudi spomine na posebno vzdušje v pričakovanju osamosvojitve Slovenije in opiše svoje vtise s proslave v Ljubljani, 26. junija 1991 po kateri se je vrnil domov na Jesenice. Naslednji dan se je odpravil v službo v železarno od koder se je predčasno vrnil domov, ko se je po cesti skozi Jesenice proti mejnemu prehodu Karavanke že peljala kolona vozil JLA. V nadaljevanju se spominja vpoklica v enote TO, zasedbo položajev nad predorom Karavanke, kjer so doživeli tudi letalsko raketiranje predora. Zapiše tudi, da v desetdnevni vojni ni izstrelil niti enega naboja. Po vojni je bil odlikovan, a žal kot invalid izgubil službo in se po nekaj letih brezposelnosti invalidsko upokojil. V zadnjem delu zgodbe zapiše svoja razmišljanja po tridesetih letih življenja v samostojni Sloveniji, izpostavi storjene krivice in svoje razočaranje nad slabo urejenim statusom veteranov vojne za Slovenijo, kakor tudi nad današnjim stanjem v državi. Kljub vsemu optimistično opiše preživljanje pokoja v družbi vnučkov in zaključi s stavkom: Pa srečno, moja Slovenija!Dokument vsebuje fotografiji Odločbe o državljanstvu Slovenije Nika Kešine, 25. marec 1991 in Spominske medalje Zveze veteranov vojne za Slovenijo, podeljene Niku Kešini ob 10. obletnici osamosvojitve, last Nika Kešina.- All metadata published by Europeana are available free of restriction under the Creative Commons CC0 1.0 Universal Public Domain Dedication. However, Europeana requests that you actively acknowledge and give attribution to all metadata sources including Europeana
Provider: - Institution: - Data provided by Europeana Collections- Vsebino dokumenta predstavlja zgodba Trganje vezi z nekdanjo državo Jugoslavijo, ki jo je napisal Vitomir Pretnar in je objavljena v ...knjižici Kako smo na Jesenicah doživljali osamosvajanje Slovenije.Gre za zgodbo Vitomirja Pretnarja, nekdanjega sekretarja za gospodarstvo in negospodarstvo ter podpredsednika Izvršnega sveta Občine Jesenice, ki je povzel zapise tega obdobja od marca do septembra leta 1991 po službenem rokovniku. Izmed njih je izbral najbolj zanimive in zaradi lažjega razumevanja dodal svoj komentar. Avtor zapiše, da je šlo tedaj za vojaški spopad in spremembo celotnega družbenega sistema. Zgodba je razdeljena v podpoglavji: Uvod v dogajanja in Dogajanja ter časovno opredeljena z datumi. V uvodu avtor opiše priprave a zahtevno in negotovo gospodarsko in siceršnjo osamosvojitev Slovenije ter nas seznani z razpravo v kateri je sodeloval ekonomist Jože Mencinger, častni občan Jesenic. V nadaljevanju nas seznani z dogajanjem na drugih področjih, obiskom predsednika vlade RS Lojzeta Peterleta in grozečim poslabšanjem ekonomske in socialne situacije na Jesenicah. Opiše tudi reševanje problema tovora z nevarnimi odpadki in organizacijske priprave na razglasitev samostojnosti Slovenije med katere je sodilo tudi zagotavljanje blagovnih rezerv. V nadaljevanju opiše tudi popis vojne škode v občini. Avtor prispevek zaključi z opisom prenosa muzeja železarne na Občino Jesenice in predajo ključev, 8. februarja 1992. Dokument vsebuje fotografijo predaje ključev muzeja Občini Jesenice, 8. februarja 1992 (Hrani: Boris Bregant).- All metadata published by Europeana are available free of restriction under the Creative Commons CC0 1.0 Universal Public Domain Dedication. However, Europeana requests that you actively acknowledge and give attribution to all metadata sources including Europeana
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