Unknown
Digilabs S.a.s.
In:
EPIC3DUST 2014 : 1st International Conference on Atmospheric Dust, Conference Proceedings, 15 December 2014., (ProScience ; 1), Digilabs S.a.s., 1, 423 p., pp. 266-272, ISBN: ISSN: 2283-5954, ISSN: 2283-5954
Publication Date:
2015-02-10
Description:
When an ice core sample is analysed for its aeolian dust content, it is melted and the particles detected
are suspended in water. Consequently, dust measurement techniques employed in the ice core
community differ from those used for in-situ studies of airborne dust.
Methods commonly used to classify insolubles suspended in a liquid are either based on the particles’
interaction with light or on the detection of resistive pulses by means of Coulter counting. Data sets
obtained with Coulter counters are widely accepted as references and other techniques are judged
against their ability to reproduce these.
Unfortunately, optically acquired ice core dust records were found to differ. By analyzing two
sections of the NEEM dust record, two different evaluation procedures are discussed before a third
protocol is proposed. It is found that relative changes in the archived dust load can be reproduced,
while the simultaneous attainment of absolute concentrations or changes in the grain size frequency
histograms in high resolution remains difficult.
Repository Name:
EPIC Alfred Wegener Institut
Type:
Inbook
,
peerRev
Format:
application/pdf
|
Location |
Call Number |
Expected |
Availability |
