실내라돈농도의공간적분포특성연구 환경기반연구부생활환경연구과
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1 실내라돈농도의공간적분포특성연구 환경기반연구부생활환경연구과,,,,,,,, 2012
2 목차 ⅰ ⅲ ⅳ Abstract ⅴ Ⅰ Ⅱ Ⅲ i
3 목차 Ⅳ ii
4 목차 iii
5 목차 iv
6 Abstract v
7 Ⅰ. 서론 Ⅰ 1
8 Ⅱ. 연구내용및방법 Ⅱ. 2
9 Ⅱ. 연구내용및방법 <Figure 1> Classification of geological characteristics by a rock layer 3
10 Ⅱ. 연구내용및방법 (a) Original geological map (1:50,000) (b) Modified geological map (1:50,000) <Figure 2> Comparison of geological map in the part of Gangwon-do (Pyeongchang, Jeonsun, Yeongwol, Yemi) ( 가 ) 거리반비례평균법 (IDW) 4
11 Ⅱ. 연구내용및방법 <Equation 1> <Equation 2> ( 나 ) 크리깅법 (kriging) ( 다 ) Radical basis function법 (RBF 또는 Spline) 5
12 Ⅱ. 연구내용및방법 ( 라 ) 불확실도분석및추정값검증 <Equation 3> <Equation 4> 6
13 Ⅲ. Source : <Figure 3> Radon map of USA 7
14 (a) England and Wales (b) Scotland (c) Northern Ireland <Figure 4> Map of radon affected areas in UK 8
15 (a) Average value of radon concentration (b) Proportion exceeding 200 Bq/m 3 (c) Proportion exceeding 400 Bq/m 3 <Figure 5> Map of radon in Norway (a) Average value of radon concentration (b) Proportion exceeding 200 Bq/m 3 (c) Proportion exceeding 400 Bq/m 3 <Figure 6> Map of radon in Finland 9
16 . <Table 1> Radon index matrix by USGS Factor Positive value <Table 2> Confidence index matrix by USGS Factor Positive value
17 Source : <Figure 7> Generalized geological radon potential map of USA 11
18 Source : J.Kemski (2001) <Figure 8> Classification of geogenic radon potential by ranking of radon concentration in soil gas and gas permeability in Germany 12
19 . 13
20 (a) Indoor radon map (b) Gyeonggi block (c) Ogcheon belt (d) Yeongnam block (e) Gyeongsang basin (f) Yeonil basin Source : <Figure 9> Comparison of indoor radon and tectonic structure in Korea. 14
21 (a) Indoor radon map (b) Geological map <Figure 10> Comparison of indoor radon level and geological map 15
22 Ⅲ. 연구결과 및 고찰 (a) Banded gneiss, Biotite gneiss (b) Granitic gneiss (c) Porphyroblastic gneiss, Augen gneiss (d) Biotite schist (e) Mica schist (f) Quartz schist (g) Granite gneiss (h) Triassic granite (i) Jurassic granite <Figure 11> Geological map by each geological feature in Korea 16
23 Ⅲ. 연구결과 및 고찰 (j) Cretaceous granite (k) Paleogene granite (l) Limestones, Cambrian sediments (m) Quartzite (n) Ordovician sediments (o) Carboniferous (p) Lower Ogcheon group (q) Middle Ogcheon group (r) Permian~Triassic sediments <Figure 11> Geological map by each geological feature in Korea (continued) 17
24 Ⅲ. 연구결과 및 고찰 (s) Lower Jurassic sediments (t) Upper Jurassic sediments (rock) (u) Lower Cretaceous sediments (Shindong group) (v) Lower Cretaceous sediments (Hayang group) (w) Upper Cretaceous sediments (Yucheon group) (x) Acidic Dyke, Quartz vein (y) Rhyolite (z) Andesite (aa) Basalt <Figure 11> Geological map by each geological feature in Korea (continued) 18
25 19
26 <Table 3> Indoor radon level in winter at home by geological features Indoor radon in winter Geological features N Minimum Mean Maximum (Bq/m 3 ) (Bq/m 3 ) (Bq/m 3 ) 20
27 <Table 4> Upper indoor radon level in winter at home by geological features Geological features Indoor radon in winter upper 10% upper 30% Mean Mean N (Bq/m 3 N ) (Bq/m 3 ) 21
28 <Table 5> Indoor radon level in winter at detached houses by geological features Indoor radon in winter Geological features N Minimum Mean Maximum (Bq/m 3 ) (Bq/m 3 ) (Bq/m 3 ) 22
29 <Table 6> Indoor radon level in winter at home built before 1990's by geological features Geological features N Indoor radon in winter Minimum Mean Maximum (Bq/m 3 ) (Bq/m 3 ) (Bq/m 3 ) 23
30 <Table 7> Parameter for spatial analysis Spatial analysis (optional) Output cell size (optional) Search radius (optional) Search radius Settings Number of points. 24
31 (a) IDW (b) Kriging Ordinary Spherical (c) Kriging Universal (d) RBF <Figure 12> Comparison of results of spatial analysis 25
32 . <Table 8> Descriptive statistics of predicted value by spatial analysis Type Mean Med Max Min Range N SD ME RMSE <Table 9> Correlation coefficient between measured and predicted value by spatial analysis Type IDW Kriging (Ordinary) Kriging (Universal) RBF 26
33 (a) IDW (b) Kriging (Ordinary) (c) Kriging (Universal) (d) RBF <Figure 13> Relationship of measured and predicted value by spatial analysis 27
34 ( 가 ) 오차거리의합 (Bias) <Table 10> Bias of predicted value by spatial analysis No. of removed sites IDW Kriging (Ordinary) Kriging (Universal) RBF <Figure 14 > Bias by spatial analysis 28
35 ( 나 ) 평균제곱근오차 (RMSE) <Table 11> RMSE of predicted value by spatial analysis No. of removed sites IDW Kriging (Ordinary) Kriging (Universal) RBF <Figure 15 > RMSE by spatial analysis 29
36 (a) removed 100 sites (b) removed 200 sites (c) removed 400 sites (d) removed 600 sites <Figure 16> Spatial analysis in case removed sites by IDW 30
37 (a) removed 100 sites (b) removed 200 sites (c) removed 400 sites (d) removed 600 sites <Figure 17> Spatial analysis in case removed sites by Kriging(ordinary) 31
38 Ⅳ. 결론 Ⅳ 32
39 참고문헌 33
40 참고문헌 34
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