Rheometry data on ash from Mount Meager, British Columbia, Canada (NERC Grant NE/W003767/1)
Rheometry data on ash from Mt Meager, British Columbia, Canada. All measurements that generated these data were performed using an Anton Paar MCR302 rotational rheometer with an Anton Paar powder flow cell attached. The rotating measuring geometry is 24.16 mm in diameter and contains 20 evenly spaced depressions of 1.75 mm that extend the entire length of the measuring cylinder. The profiled nature of this geometry prevents particle slip during rotation. Shear rate sweeps were performed to characterise the rheological behaviour of our pyroclast-gas mixtures. ~50 g of sample (ash from Mt Meager, British Columbia, Canada) was loaded into the powder flow cell with the measuring geometry inserted. Then for a constant gas flux applied to the base of the powder flow cell, the measuring geometry was rotated to apply a range of shear rates starting at 0.1 s-1 ramping up to 328 s-1 with approximately 20 data points generated per decade. These shear rate sweeps were performed for monodisperse grain sizes from 500 µm to 63 µm at a range of volumetric gas flow rates. Specifically for the 500 µm sample the rheology experiments were performed at 0, 15, 30, 45, 50, 55, 60, 65, and 70 L min-1. For the 250 µm sample the rheology experiments were performed at 0, 15, 20, 25, 30, 35, and 40 L min-1. For the 125 µm sample the rheology experiments were performed at 0, 1, 2, 3, 4, 5, 7, 8, 9, and 10 L min-1. For the 63 µm sample the rheology experiments were performed at 0, 0.25, 0.5, 1, 1.5, 2, 3, 4, and 5 L min-1.
nonGeographicDataset
https://webapps.bgs.ac.uk/services/ngdc/accessions/index.html#item182972
name: Data
function: information
http://data.bgs.ac.uk/id/dataHolding/13608145
eng
geoscientificInformation
publication
2008-06-01
Rheology
NGDC Deposited Data
revision
2022
NERC_DDC
2022-07-01
2022-12-01
creation
2023-11-09
notApplicable
All measurements presented were performed using an Anton Paar MCR302 rotational rheometer with an Anton Paar powder flow cell attached. The geometry is 24.16 mm in diameter and contains 20 evenly spaced depressions of 1.75 mm that extend the entire length of the measuring cylinder. The profiled nature of this geometry prevents particle slip during rotation. Shear rate sweeps were performed to characterise the rheological behaviour of our pyroclast-gas mixtures. ~50 g of sample was loaded into the powder flow cell with the measuring geometry inserted. Then for a constant gas flux the measuring geometry applied a range of shear rates starting at 0.1 s-1 ramping up to 328 s-1 with ~20 data points per decade. These shear rate sweeps were performed for all grain sizes from 500 μm to 63 μm at a range of volumetric gas flow rates.
publication
2011
false
See the referenced specification
publication
2010-12-08
false
See http://eur-lex.europa.eu/LexUriServ/LexUriServ.do?uri=OJ:L:2010:323:0011:0102:EN:PDF
MS Excel
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University of Lancaster
Lancaster Environment Centre
Lancaster
LA1 4YQ
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British Geological Survey
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British Geological Survey
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British Geological Survey
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pointOfContact
2024-04-18