| Project/Area Number |
24840044
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| Research Category |
Grant-in-Aid for Research Activity Start-up
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| Allocation Type | Single-year Grants |
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| Research Field |
Meteorology/Physical oceanography/Hydrology
|
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| Research Institution | Kitami Institute of Technology (2013)
National Institute of Polar Research (2012) |
|---|
Principal Investigator |
OHNO hiroshi 北見工業大学, 工学部, 助教 (80634625)
|
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| Project Period (FY) |
2012-08-31 – 2014-03-31
|
| Project Status |
Completed (Fiscal Year 2013)
|
| Budget Amount *help |
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
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| Keywords | 極地 / 気候変動 / エアロゾル / 雪氷化学 |
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| Research Abstract |
Using the fluorinert-immersion method developed in this study, we performed microscopic observations and micro-Raman analysis of aerosol-origin particles within Antarctic snow pack. In surface snow cover, impurity particles of micron-size were rarely found; and Raman signals of water-soluble salts were not detected from these inclusions. On the other hand, in firn near the close-off depth, a number of supermicron particles that mainly consist of the sodium and calcium sulfates were observed. These findings indicate that, after the deposition of submicron water-soluble aerosol to surface snow cover, the redistribution and reaction of chemical species occur in firn, resulting in the active growth and alteration of aerosol-origin particles with increasing snow-depth.
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