FAIMON, Jiří. Shaping of clay fragments during transport: a theoretical model. Geologica Carpathica. Bratislava: SAV, 2005, roč. 56/2005, č. 5, s. 455-160, 6 s. ISSN 1335-0552.
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Základní údaje
Originální název Shaping of clay fragments during transport: a theoretical model
Název česky Tvarování jílových závalků během transportu: teoretický model
Autoři FAIMON, Jiří (203 Česká republika, garant).
Vydání Geologica Carpathica, Bratislava, SAV, 2005, 1335-0552.
Další údaje
Originální jazyk angličtina
Typ výsledku Článek v odborném periodiku
Obor 10500 1.5. Earth and related environmental sciences
Stát vydavatele Slovensko
Utajení není předmětem státního či obchodního tajemství
Impakt faktor Impact factor: 0.449
Kód RIV RIV/00216224:14310/05:00031152
Organizační jednotka Přírodovědecká fakulta
UT WoS 000234072400006
Klíčová slova česky Česká republika; Rudické vrstvy; modelování; recentní procesy; sedimentologie; dno sedimentačního bazénu; jílový závalek
Klíčová slova anglicky Czech Republic; Rudice Formation; modelling; recent process; sedimentology; basin bed; clay ball
Štítky basin bed, clay ball, Czech Republic, Modelling, recent process, Rudice Formation, Sedimentology
Příznaky Mezinárodní význam, Recenzováno
Změnil Změnil: doc. Ing. Jiří Faimon, Dr., učo 1405. Změněno: 24. 9. 2009 09:53.
Anotace
Irregular blocks of cohesive clay (IBC) are transformed into spherical clay balls (SCB) during transport across a sedimentary basin bed by runoff. This transformation is controlled by rotation of the IBC about a randomly changing axis. During this process, deformation dominates; abrasion is less significant. Based on a theoretical model, the equation describing SCB formation, was derived in terms of the SCB instantaneous sphericity, Y, the IBC initial sphericity, Y0, the transport length, l, and the effective diameter, def. The equation was validated with the new data set obtained from IBC/SCB distribution along the transport path on the bed of an artificial basin (sandpit quarry). The coefficient k was found to be 2.9x10-4 and 4.8x10-4 for the shaping of two kinds of clays, respectively. Based on the proposed model, the length of transport can be estimated if sphericity and effective diameter are known. Despite the verification in the artificial setting, the presented model is valid also for the natural environment of various clay rich cliffs or scarps.
Anotace česky
Irregular blocks of cohesive clay (IBC) are transformed into spherical clay balls (SCB) during transport across a sedimentary basin bed by runoff. This transformation is controlled by rotation of the IBC about a randomly changing axis. During this process, deformation dominates; abrasion is less significant. Based on a theoretical model, the equation describing SCB formation, was derived in terms of the SCB instantaneous sphericity, Y, the IBC initial sphericity, Y0, the transport length, l, and the effective diameter, def. The equation was validated with the new data set obtained from IBC/SCB distribution along the transport path on the bed of an artificial basin (sandpit quarry). The coefficient k was found to be 2.9x10-4 and 4.8x10-4 for the shaping of two kinds of clays, respectively. Based on the proposed model, the length of transport can be estimated if sphericity and effective diameter are known. Despite the verification in the artificial setting, the presented model is valid also for the natural environment of various clay rich cliffs or scarps.
Návaznosti
MSM0021622412, záměrNázev: Interakce mezi chemickými látkami, prostředím a biologickými systémy a jejich důsledky na globální, regionální a lokální úrovni (INCHEMBIOL) (Akronym: INCHEMBIOL)
Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Výzkumné záměry
VytisknoutZobrazeno: 23. 4. 2021 18:44