2005
Shaping of clay fragments during transport: a theoretical model
FAIMON, JiříZákladní 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
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
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 24. 9. 2009 09:53, doc. Ing. Jiří Faimon, Dr.
V originále
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.
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, záměr |
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