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Zielinski, G A; Mershon, G R (2005): GISP2 Insoluble microparticles. PANGAEA,

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Related to:
Chylek, P; Johnson, B; Damiano, P A; Taylor, Kendrick C; Clement, Poul (1995): Biomass burning record and black carbon in the GISP2 ice core. Geophysical Research Letters, 22(2), 89-92,
GRIP/GISP (1997): The Greenland Summit Ice Cores CD-ROM GISP2/GRIP. National Snow and Ice Data Center, University of Colorado at Boulder, and World Data Center for Paleoclimatology, National Geophysical Data Center, Boulder Colorado, CD-ROM,
Holdsworth, G; Chylek, P; Damiano, P A; Deck, Bruce; Higuchi, K; Johnson, B; Mayewski, Paul Andrew; Wahlen, Martin; Zielinski, G A (1996): Historical biomass burning: Late 19th century agriculture revolution in northern hemisphere ice core data and its atmospheric interpretation. Journal of Geophysical Research: Atmospheres, 101(D18), 23317-23334,
Zielinski, G A; Mershon, G R (1997): Paleoenvironmental implications of the insoluble microparticle record in the GISP2 (Greenland) ice core during the rapidly changing climate of the Pleistocene-Holocene transition. Geological Society of America, Bulletin, 109(5), 547-559,;2
Greenland Ice Core Projects (GRIP/GISP/NGRIP)
Latitude: 72.970000 * Longitude: -38.800000
Date/Time Start: 1990-01-01T00:39:00 * Date/Time End: 1990-01-01T00:39:00
Minimum DEPTH, ice/snow: 0.7500 m * Maximum DEPTH, ice/snow: 773.6000 m
GISP2 * Latitude: 72.970000 * Longitude: -38.800000 * Date/Time: 1990-01-01T00:39:00 * Elevation: 3208.0 m * Recovery: 3053 m * Campaign: GISP * Basis: Sampling/drilling ice * Method/Device: Drilling/drill rig (DRILL) * Comment: GISP2 is a combination of the shallow B and the deeper D core; about 200 ka
Insoluble microparticle concentrations and grain-size distributions are measured with an Elzone 280PC particle counter in a Class 100 clean room at the University of New Hampshire. The Elzone uses a 30 um orifice to measure microparticle concentrations in 64 logarithmically- divided channels from 0.65 um to 11 um and calculates a grain-size distribution as an equivalent spherical diameter. Mass values were calculated assuming an average density of 2.65 g/cm3. Mean grain size is based on the number of particles. We have also used mean grain size based on mass as discussed in Zielinski and Mershon [in press]. Beta values are the slope of the best-fit line of the grain-size distribution on a logarithmic scale by channel measured with lower beta values reflecting an overall coarser grain-size distribution and a higher beta value reflecting an overall finer grain-size distribution. Because some channels can have zero counts in them, the beta value may not be a reliable proxy of the overall coarseness/fineness of a sample. We do not use it in our interpretation of the insoluble microparticle record, but it is provided here because it has been used in the past by other ice core investigators.
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1DEPTH, ice/snowDepth ice/snowmGeocode
2AGEAgeka BPGeocode
3Depth, top/minDepth topmZielinski, G A
4Depth, bottom/maxDepth botmZielinski, G A
5Age, maximum/oldAge maxkaZielinski, G A
6Age, minimum/youngAge minkaZielinski, G A
7Particle concentrationPart conc#/mlZielinski, G AGrain size, Elzone Particle Counter
8SizeSizeµmZielinski, G A
9Grain size, betaBetaZielinski, G ACalculated
10Grain size, betaBetaZielinski, G ACalculated
6320 data points

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