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Titolo:
The static shape of yield strength fluids slowly emplaced on slopes
Autore:
Osmond, DI; Griffiths, RW;
Indirizzi:
Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT 0200, Australia Australian Natl Univ Canberra ACT Australia 0200 rra, ACT 0200, Australia
Titolo Testata:
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
fascicolo: B8, volume: 106, anno: 2001,
pagine: 16241 - 16250
SICI:
0148-0227(20010810)106:B8<16241:TSSOYS>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
LAVA DOMES; LINE SOURCES; FLOWS; MORPHOLOGY; MODELS; POINT;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
17
Recensione:
Indirizzi per estratti:
Indirizzo: Osmond, DI Australian Natl Univ, Res Sch Earth Sci, Canberra, ACT 0200, Australia Australian Natl Univ Canberra ACT Australia 0200 00, Australia
Citazione:
D.I. Osmond e R.W. Griffiths, "The static shape of yield strength fluids slowly emplaced on slopes", J GEO R-SOL, 106(B8), 2001, pp. 16241-16250

Abstract

A theoretical solution is presented for the static three-dimensional shapeof a fluid having a finite yield strength after it is extruded slowly froma small source on an inclined plane. The solution is compared to the shapes obtained in laboratory experiments in which slurries of kaolin in polyethylene glycol wax were ejected, slowly and in small incremental volumes, onto a slope. This study is aimed at understanding the shape of highly siliciclava flows, such as large rhyolite flows which occur on steep mountain sides or on gentle slopes, and the role of a finite yield strength in governing the slow spreading and the final static shape. The results indicate that it is possible to obtain an estimate of the yield strength of a fluid whichis emplaced under such circumstances, using only horizontal aspect ratios and the slope of the underlying ground.

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Documento generato il 04/04/20 alle ore 12:21:16