Shaping of clay fragments during transport: a theoretical model
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 | |
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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 | |
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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 |
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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 |
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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 | |
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MSM0021622412, záměr | Název: 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, Interakce mezi chemickými látkami, prostředím a biologickými systémy a jejich důsledky na globální , regionální a lokální úrovni |
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