We applied an interdisciplinary approach to analyze the late Quaternary activity of the Sava Fault in the Slovenian Southern Alps. The Sava Fault is an active strike-slip fault, and part of the ...Periadriatic Fault System that accommodated the convergence of Adria and Europe. It is one of the longest faults in the Southern Alps. Using high-resolution digital elevation models from lidar and photogrammetric surveys, we were able to overcome the challenges of assessing fault activity in a region with intense surface processes, dense vegetation, and relatively low fault slip rates. By integrating remote sensing analysis, geomorphological mapping, structural geological investigations, and near-surface geophysics (electrical resistivity tomography and ground penetrating radar), we were able to find subtle geomorphological indicators, detect near-surface deformation, and show distributed surface deformation and a complex fault pattern. Using optically stimulated luminescence dating, we tentatively estimated a slip rate of 1.8 ± 0.4 mm/a for the last 27 ka, which exceeds previous estimates and suggests temporal variability in fault behavior. Our study highlights the importance of modern high-resolution remote sensing techniques and interdisciplinary approaches in detecting tectonic deformation in relatively low-strain rate environments with intense surface processes. We show that slip rates can vary significantly depending on the studied time window. This is a critical piece of information since slip rates are a key input parameter for seismic hazard studies.
Prazgodovinski kompleks Cvinger pri Dolenjskih Toplicah leži na strateški točki na prehodu med Dolenjsko in Belo krajino. Tukaj odkrite najdbe so imele pomembno vlogo pri opredelitvi mlajšega ...halštatskega obdobja v jugovzhodnih Alpah. Prav tako pomembno je odkritje železarsko-talilniškega območja.
V zadnjih letih pa je bil Cvinger predmet interdisciplinarnih raziskav, ki so povezale sodobne tehnike daljinskega zaznavanja, kot so zračno lasersko skeniranje in geofizikalne meritve, s tradicionalnimi arheološkimi metodami. Rezultati so pripeljali do novih dognanj o celotnem kompleksu, vključno z natančnejšo datacijo talilniškega območja, pridobljeno z metodo arheomagnetnega datiranja.
Purpose:
To report a prospective study evaluating the long-term impact of stent-supported angioplasty on renal function and blood pressure control.
Methods:
In a 6-year period, 456 hemodynamically ...significant de novo renal artery stenoses ≥70% were treated in 340 consecutive hypertensive patients (223 men; mean age 66±10 years, range 44–84) with or without impaired renal function. Baseline data on serum creatinine (sCr), intrarenal resistance index, ambulatory 24-hour blood pressure monitoring, and documentation of the number and dose of antihypertensive drugs were compared to values obtained during follow-up. The primary endpoint was a 10% decrease in sCr; the glomerular filtration rate and changes in blood pressure control were additional outcome measures.
Results:
During a mean follow-up of 34±20 months, sCr decreased significantly from 1.45±0.87 to 1.39±0.73 mg/dL (p=0.048). In 34% of the patients, sCr decreased >10%, 39% were unchanged, and 27% had an increase >10%. Glomerular filtration rate increased from 59±26 to 62±26 mL/min/1.73 m2 (p=0.6). Systolic, diastolic, and mean blood pressure measurements significantly improved immediately after the intervention (132/72/93 versus 144/79/102 mmHg at baseline, p<0.0001) and remained improved during follow-up (p<0.0001). Blood pressure control was improved in 46%, unchanged in 43%, and deteriorated in 11%. Baseline sCr, bilateral intervention, percent diameter stenosis, and 3-vessel coronary disease were independent predictors of improved renal function during follow-up; the number of antihypertensive drugs taken before the intervention predicted improved blood pressure control.
Conclusions:
Stent-supported angioplasty of renal artery stenoses preserves renal function and improves blood pressure control in a broader spectrum of patients than previously thought.
•Determination of peat stratigraphy, peat thickness and basin morphology.•Comparison of geophysical and conventional approaches in peatland environment.•3D model was created from GPR data to ...visualize the morphology.•Peatland formed from four smaller lakes which were later joined in one lake.
Owing to their anoxic environment, peatlands play an important role in the preservation of records documenting past atmospheric depositions. To determine past records, data on peat stratigraphy and bog development are needed. Ground penetrating radar (GPR) was used to determine the peat thickness and morphology of the Šijec bog on the Pokljuka plateau in Slovenia, which will serve as a basis for further geochemical studies. Information on the stratigraphy below the peat/clay boundary was acquired by applying electrical resistivity tomography (ERT). The GPR results reveal four depressions within the peat bog, which are separated by elevated ridges. Within the depressions the peat reaches a depth of 6–9 m. The edges of the bog are flat, with peat thickness ranging from 2 to 4 m. The reach of the GPR was complemented with manual peat probing. A comparison of the depths obtained using GPR and the peat probe reveals that the results of both methods correspond well in most locations. The ERT indicated similar peat depths; peat responds with high electrical resistivity. In contrast, clayey sediments with low resistivity are found below the peat. The peat depressions are underlain with larger clayey depressions reaching more than 20 m in thickness and represent lake sediments. The complementary geophysical methods proved to be an efficient approach with which we can delineate the peat morphology and the underlying stratigraphy. Both indicate bog formation from a lake with four deeper depressions, that are separated by glacial deposits. The results presented here show the potential for geophysical methods to infer formational processes in peatlands, showing the presence of a series of isolated basins that later coalesced into a single peat landform. This interpretation is consistent with previous conceptual models from studies in boreal regions.
Najdišče Kleinklein pri Großkleinu z okolico v dolini reke Solbe (Sulm) je že skoraj 175 let sinonim za eno najslavnejših najdišč iz starejše železne dobe v Evropi. Najdbe, kot so bronasta maska in ...roke, zvončasti oklepi in bronaste posode s punciranim okrasom, sodijo med najpomembnejše eksponate arheološke zbirke v Joanneumu. Leta 2010 so sodelavci Joanneuma začeli nove raziskave arheološke krajine v porečju reke Solbe (Sulm), ki obsegajo analize lidarskih posnetkov in zračnih fotografij, geofizikalne raziskave, terenske izmere ter arheološka izkopavanja z arheobotaničnimi in arheozoološkimi analizami. V okviru teh raziskav so leta 2015 ob rigolanju na južnem pobočju Burgstallkogla pri Großkleinu odkrili in raziskali zgorelo ruševino stavbe iz starejše železne dobe. S tem odkritjem so pridobili nove podatke o načinu gradnje na Burgstallkoglu. Od leta 2017 se posvečajo raziskavam okoliške krajine, še posebej na približno 4,5 km zračne črte oddaljeni utrjeni naselbini na Königsbergu pri Heimschuhu.
Glaciokarst depressions are major glacigenic depocenters in the Dinaric mountain karst areas and often store important information about the timing and nature of glacial processes and paraglacial ...sediment reworking. This study focuses on Praprotna draga, which is one of the largest glaciokarst depressions in the Snežnik Mountain (Dinaric karst), with an area of ~3.4 km2 and a maximum depth of 140 m. The western slopes of the depression are characterized by undulated moraine morphology and alluvial fans are filling its entire floor. We present the results on the thickness, origin and age of the sediment infill using a complementary geomorphological, sedimentological, geophysical and dating approach. Distribution of moraines point to two glacial advances that were associated with two main alluvial fan aggradation phases recognized using the electrical resistivity tomography measurements. The youngest alluvial deposits were sampled for cosmogenic 36Cl analysis using amalgamated carbonate pebbles. The depth profile of 36Cl concentrations suggests an age of 12.3 ± 1.7 ka when assuming a likely denudation rate of 20 mm ka−1. Since the existence of the Younger Dryas glaciers in the study area is climatically difficult to explain, we tentatively propose that the youngest alluvial deposition in Praprotna draga took place after the glacier retreat during the paraglacial period. Our findings suggest that the time window of paraglacial adjustment in the Snežnik Mountain was brief and likely conditioned by quick recolonization with vegetation and inefficient surface runoff on deglaciated karst terrain.
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•The topmost ~2 m of alluvial deposits (AD2) was dated to 12.3 ± 1.7 ka.•Dated alluvial deposits are most likely of paraglacial origin.•Time window of paraglacial response to the last deglaciation in Snežnik was short.•Brief paraglacial response a result of karst drainage and quick vegetation change
Tijekom travnja te kolovoza 2018. godine Institut za arheologiju je u suradnji s tvrtkom Gearh d.o.o. iz Maribora proveo geofizička istraživanja na lokalitetu Hlebine – Svetinjski breg. Lokalitet je ...snimljen georadarskom, magnetnom i metodom geoelektrične tomografije. Provedenim istraživanjima ustanovljen je točan položaj crkve i groblja te njihova ogradna zida. Osim sakralnog kompleksa uočeni su i tragovi drugih arheoloških struktura te je potvrđen potencijal nalazišta i prikupljeni su svi potrebni podaci za buduća ciljana arheološka istraživanja.
U okviru opsežnoga terenskog pregleda obavljenoga za potrebe projekta TransFER prikupljeni površinski nalazi ukazivali su kako su se na položajima Bakovčice – Velike livade 1, Nađbarice 1 i Ždala – ...Telek odvijale aktivnosti povezane s proizvodnjom željeza. Uz fragmente talioničke zgure nesumnjivo povezane s proizvodnjom željeza, među površinskim nalazima pronađeni su brojni ulomci keramike iz različitih povijesnih razdoblja. S ciljem jasnijega definiranja karaktera nalazišta odabranih na osnovi analiza površinskih nalaza, pristupilo se neinvazivnim, geofizičkim istraživanjima primjenom magnetske metode. U svim se slučajevima radi o površinama s intenzivnom poljoprivrednom obradom zemljišta, pa se mogla očekivati slabija očuvanost arheoloških ostataka i preme tome i slabije magnetske anomalije. To je bio dosta ozbiljan izazov za arheološki rječitu obradu magnetograma, ali je na više mjesta potvrđeno postojanje ostataka željezarskih aktivnosti in situ ispod razine oranja, dok se ostaci željezarskih djelatnosti u velikoj mjeri nalaze u sloju oranice. Na osnovi svih karakterističnih magnetskih anomalija, uspjelo se odrediti približne granice područja aktivnosti za proizvodnju željeza. Ovo je geofizičko istraživanje značajno za teoretska razmatranja korelacija rezultata terenskoga pregleda i geofizičkih istraživanja za usavršavanje metodologije arheološke prospekcije kao i za određivanje mjera zaštite arheološke baštine, budući da potvrđuje već dobro poznatu činjenicu da arheološki ostaci na primarnome mjestu na poljoprivrednim površinama sa sve intenzivnijom obradom zemljišta s vremenom postepeno nestaju.
Na srednjovjekovnom arheološkom nalazištu Osijek Vojakovački ‒ Mihalj u potkalničkome kraju, koje se sastoji od tri objekta – zemljane utvrde te dva kamena objekta vjerojatno sakralne namjene, ...provedena su geofizička istraživanja u kojima su prepoznate i nove, do sada nepoznate, strukture na ovome lokalitetu. Osnovni cilj geofizčkih istraživanja je bila procjena arheološkog potencijala izradom karata anomalija u različitim geofizičkim poljima primjenom georadarske metode (GSSI SIR3000, 400 MHz antena), magnetske metode (Geometrics G-858), metode električnog otpora na način geoelektričnog kartiranja (Geoscan RM15) i 2D geoelektrične tomografije (ARES) te niskofrekvencijske elektromagnetske metode (CMD Miniexplorer). Provedenim geofizičkim istraživanjima potvrđen je potencijal arheološkoga nalazišta i prikupljeni su svi potrebni podaci za ciljano određivanje pozicija arheoloških sondi u budućim arheološkim istraživanjima.
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