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| Description
| - The stromatactis cavities are present in fine-grained carbonate sediments in the nature, forming the specific shapes and reticulate arrays. However, the mechanisms behind the origin of these cavities are subjects of heated discussions in geology for 125 years. Numerous biotic and abiotic factors were considered, but with unclear results. Most recently, our team produced a critical analysis of these sedimentary structures and formulated a new hypothesis that these cavities would likely originate during the rapid deposition of extremely polydisperse and multimodal granular mixtures. Although the first experiments simulated the production of these cavities with a considerably high level of similarity, there is a lot of work to be done if we wish really explain these unique phenomena in terms of hydrodynamics. The proposed interdisciplinary study is novel, and the results would be fundamental for sedimentology and hydrodynamics, with possible implications in related technologies. (en)
- Stromataktové dutiny jsou přítomny v jemnozrnných karbonátových usazeninách v přírodě, tvoříce osobité tvary a sítovitá seskupení. Nicméně mechanizmy stojící za vznikem těchto dutin jsou předmětem prudkých diskuzí v geologii už 125 let. Dosud se zvažovaly četné biotické a abiotické faktory, ovšem s nejasnými výsledky. Velice nedávno náš tým provedl kritický rozbor těchto sedimentárních staveb a formuloval novou hypotézu, že tyto dutiny by mohly nejspíše vznikat během rychlého ukládání vyjímečně polydisperzních a multimodálních zrnitých směsí. Ačkoliv první experimenty napodobily tvorbu těchto dutin se značně vysokou úrovní podobnosti, existuje zde stále ještě mnoho další práce, která musí být učiněna, jestliže chceme tyto unikátní jevy skutečně vysvětlit ve smyslu hydrodynamiky. Navrhovaná interdisciplinární studie je zcela neotřelá a původní, a výsledky studie mohou být zásadní pro sedimentologii (geologii) i hydrodynamiku (fyziku), s možnými implikacemi v souvisejících technologiích.
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| Title
| - Hydrodynamic concept of stromatactis formation in geology (en)
- Hydrodynamické pojetí tvorby stromataktů v geologii
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| skos:notation
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| http://linked.open...avai/cep/aktivita
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| http://linked.open...kovaStatniPodpora
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| http://linked.open...ep/celkoveNaklady
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| http://linked.open...datumDodatniDoRIV
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| http://linked.open...i/cep/druhSouteze
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| http://linked.open...ep/duvernostUdaju
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| http://linked.open.../cep/fazeProjektu
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| http://linked.open...ai/cep/hlavniObor
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| http://linked.open...hodnoceniProjektu
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| http://linked.open...vai/cep/kategorie
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| http://linked.open.../cep/klicovaSlova
| - experimental sedimentology; multiphase fluid mechanics; sedimentation; particulate suspensions; polydisperse granular mixtures; voids in the sediment; stromatactis (en)
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| http://linked.open...ep/partnetrHlavni
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| http://linked.open...inujicichPrijemcu
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| http://linked.open...cep/pocetPrijemcu
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| http://linked.open...ocetSpoluPrijemcu
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| http://linked.open.../pocetVysledkuRIV
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| http://linked.open...enychVysledkuVRIV
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| http://linked.open...lneniVMinulemRoce
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| http://linked.open.../prideleniPodpory
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| http://linked.open...iciPoslednihoRoku
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| http://linked.open...atUdajeProjZameru
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| http://linked.open.../vavai/cep/soutez
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| http://linked.open...usZobrazovaneFaze
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| http://linked.open...ai/cep/typPojektu
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| http://linked.open...ep/ukonceniReseni
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| http://linked.open.../cep/vedlejsiObor
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| http://linked.open...ep/zahajeniReseni
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| http://linked.open...jektu+dodavatelem
| - Projekt experimentálně ověřil hypotézu o rychlém sedimentárním vzniku stromataktových (ST) dutin – otvorů výrazně větších než největší částice použité směsi. Implikace jsou jak v geologii, tak i v technických disciplínách. (cs)
- The project experimentally confirmed the hypothesis on rapid sedimentary origin of the stromatactum (ST) cavities – voids significantly larger than the coarsest particles in the mixture used. The implications are both for geology and engineering. (en)
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| http://linked.open...tniCyklusProjektu
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| http://linked.open.../cep/klicoveSlovo
| - multiphase fluid mechanics
- particulate suspensions
- polydisperse granular mixtures
- sedimentation
- voids in the sediment
- experimental sedimentology
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| is http://linked.open...vavai/riv/projekt
of | - Arching Structures in Granular Sedimentary Deposits
- On Dimensionless Numbers
- Computing the Added Mass of Dispersed Particles
- Výzkum vícefázových systémů na ÚCHP AV ČR Praha
- Stratigraphic significance and resolution of spectral reflectance logs in Lower Devonian carbonates of the Barrandian area, Czech Republic; a correlation with magnetic susceptibility and gamma-ray logs
- Magnetic susceptibility correlation of km-thick Eifelian–Frasnian sections (Ardennes and Moravia)
- Dust – A geology-orientated attempt to reappraise the natural components, amounts, inputs to sediment, and importance for correlation purposes
- An Emsian-Eifelian Calciturbidite sequence and the possible correlatable pattern of the Basal Choteč event in Western Ossa-Morena Zone, Portugal (Odivelas Limestone)
- Precise position of the Basal Chotec event and evolution of sedimentary environments near the Lower-Middle Devonian boundary: The magnetic susceptibility, gamma-ray spectrometric, lithological, and geochemical record of the Prague Synform (Czech Republic)
- Pragian–Emsian successions in Uzbekistan and Bohemia: magnetic susceptibility logs and their dynamic time warping alignment
- Volcanic ash particulate matter from the 2010 Eyjafjallajokull eruption in dust deposition at Prague, central Europe
- Experimental effects of surfactants on the production of stromatactis-shaped cavities in artificial carbonate sediments
- Eifelian-Frasnian Amphipora limestones, biostromes and bioherms, Moravian Karst, Czech Republic
- Stromatactic patterns formation in geological sediments: field observations versus experiments
- Towards the Structures of the Carbonate Beds Rapidly Deposited from High-Density Suspensions: Experiments with Five Fractions of Angular Grains in a Settling Column
- An anomalous atmospheric dust deposition event over Central Europe, 24 March 2007, and fingerprinting of the SE Ukrainian source
- Early Middle Frasnian platform reef strata in the Moravian Karst interpreted as recording the atmospheric dust changes: the key to understanding perturbations in the punctata conodont zone
- iDTW – An internet application with basic dynamic time warping algorithm.= iDTW – Internetová aplikace se základním algoritmem borcení časové osy
- OBI-Warp v. 0.9.4
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| is http://linked.open...vavai/cep/projekt
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