Eichler, Jan; Weikusat, Ilka; Kipfstuhl, Sepp (2013): (Fig. 28 ) Fraction of straight grain boundaries along the NEEM ice core [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.838061, In supplement to: Eichler, Jan (2013): C-axis analysis of the NEEM ice core - An approach based on Digital Image Processing [thesis]. Diploma Thesis, Fachbereich Physik, Freie Universität Berlin, 73 pp, hdl:10013/epic.41621.d001
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Project(s):
Glaciology @ AWI (AWI_Glac)
Coverage:
Latitude: 77.450000 * Longitude: -51.060000
Date/Time Start: 2009-05-01T00:00:00 * Date/Time End: 2009-08-20T00:00:00
Minimum DEPTH, ice/snow: 25 m * Maximum DEPTH, ice/snow: 2525 m
Event(s):
NEEM * Latitude: 77.450000 * Longitude: -51.060000 * Date/Time Start: 2009-05-01T00:00:00 * Date/Time End: 2009-08-20T00:00:00 * Elevation: 2545.0 m * Recovery: 2533.21 m * Location: Greenland * Method/Device: Ice drill (ICEDRILL)
Comment:
The data show the amount of grain boundaries with linearity factor >= 0.9 (almost straight) along the depth. The linearity factor = distance between GB end points / GB length.
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, ice/snow | Depth ice/snow | m | Geocode | ||
| 2 | Depth, top/min | Depth top | m | Weikusat, Ilka | ||
| 3 | Depth, bottom/max | Depth bot | m | Weikusat, Ilka | ||
| 4 | Fraction of straight grain boundaries | Grain bound frac | % | Weikusat, Ilka | Calculated |
License:
Creative Commons Attribution 3.0 Unported (CC-BY-3.0)
Size:
147 data points
Data
| 1 Depth ice/snow [m] | 2 Depth top [m] | 3 Depth bot [m] | 4 Grain bound frac [%] |
|---|---|---|---|
| 25 | 0 | 50 | 91.1269 |
| 75 | 50 | 100 | 77.8380 |
| 125 | 100 | 150 | 73.6076 |
| 175 | 150 | 200 | 71.8575 |
| 225 | 200 | 250 | 70.9070 |
| 275 | 250 | 300 | 68.8454 |
| 325 | 300 | 350 | 67.0659 |
| 375 | 350 | 400 | 65.5248 |
| 425 | 400 | 450 | 61.8464 |
| 475 | 450 | 500 | 63.8631 |
| 525 | 500 | 550 | 63.4416 |
| 575 | 550 | 600 | 61.0504 |
| 625 | 600 | 650 | 60.6576 |
| 675 | 650 | 700 | 57.5029 |
| 725 | 700 | 750 | 52.4002 |
| 775 | 750 | 800 | 53.5483 |
| 825 | 800 | 850 | 52.6042 |
| 875 | 850 | 900 | 51.4923 |
| 925 | 900 | 950 | 54.5848 |
| 975 | 950 | 1000 | 56.0739 |
| 1025 | 1000 | 1050 | 53.3255 |
| 1075 | 1050 | 1100 | 52.5898 |
| 1125 | 1100 | 1150 | 54.4049 |
| 1175 | 1150 | 1200 | 53.7184 |
| 1225 | 1200 | 1250 | 55.4255 |
| 1275 | 1250 | 1300 | 55.1378 |
| 1325 | 1300 | 1350 | 57.9592 |
| 1375 | 1350 | 1400 | 59.7009 |
| 1425 | 1400 | 1450 | 62.8563 |
| 1475 | 1450 | 1500 | 60.1775 |
| 1525 | 1500 | 1550 | 66.9707 |
| 1575 | 1550 | 1600 | 66.0823 |
| 1625 | 1600 | 1650 | 68.6781 |
| 1675 | 1650 | 1700 | 64.3078 |
| 1725 | 1700 | 1750 | 59.3174 |
| 1775 | 1750 | 1800 | 64.7956 |
| 1825 | 1800 | 1850 | 62.8068 |
| 1875 | 1850 | 1900 | 68.1041 |
| 1925 | 1900 | 1950 | 65.9776 |
| 1975 | 1950 | 2000 | 71.5731 |
| 2075 | 2000 | 2150 | 63.9520 |
| 2175 | 2150 | 2200 | 57.0460 |
| 2225 | 2200 | 2250 | 55.9014 |
| 2275 | 2250 | 2300 | 49.7469 |
| 2325 | 2300 | 2350 | 48.1566 |
| 2375 | 2350 | 2400 | 50.7537 |
| 2425 | 2400 | 2450 | 48.5452 |
| 2475 | 2450 | 2500 | 48.1374 |
| 2525 | 2500 | 2550 | 43.5897 |