Lev2: K T BOUNDARY//METEORITICS & PLANETARY SCIENCE//CRETACEOUS TERTIARY BOUNDARY - Statistics for Countries

Statistics per Country

Number of publications, full counts
Obs Country 1990-1994 1995-1999 2000-2004 2005-2009 2010-2014 All years
1 All countries 245 280 342 378 390 1635
2 United States 91 107 130 128 107 563
3 Germany 28 23 55 99 106 311
4 Canada 54 54 60 53 73 294
5 South Africa 33 54 39 34 16 176
6 United Kingdom 3 15 38 55 49 160
7 Austria 19 34 29 40 24 146
8 Australia 4 9 25 37 41 116
9 Russian Federation 2 21 29 38 23 113
10 France 19 22 15 13 20 89
11 Sweden 11 18 11 14 23 77
12 Mexico 5 11 16 7 15 54
13 Finland 11 5 6 14 10 46
14 Italy . 6 11 11 13 41
15 Norway 1 8 8 8 12 37
16 Estonia 1 2 14 10 9 36
17 India 3 6 2 9 12 32
18 Brazil . 2 2 8 19 31
19 Spain . 1 5 10 12 28
20 Czech Republic 1 2 3 9 9 24
21 China 4 1 2 1 13 21
22 Poland . 1 1 7 11 20
23 Japan 4 1 7 3 4 19
24 Switzerland 3 3 1 3 6 16
25 Belgium . . 3 6 5 14
26 Denmark . . 1 3 9 13
27 Netherlands . 3 3 4 3 13
28 Argentina . . 1 2 5 8
29 Ghana . . 2 6 . 8
30 Egypt . . 2 2 3 7
31 Romania . . . 4 3 7
32 Ukraine 1 2 1 1 2 7
33 Iceland . 2 2 2 . 6
34 Jordan . . 1 1 4 6
35 Hungary . . . . 5 5
36 New Zealand . 1 1 2 . 4
37 Taiwan . 1 3 . . 4
38 Israel . . 3 . . 3
39 Namibia . 3 . . . 3
40 Saudi Arabia . . . . 3 3
41 Thailand . 2 1 . . 3
42 USSR 3 . . . . 3
43 Viet Nam . 1 . 2 . 3
44 Kazakhstan . . . 2 . 2
45 Korea, Republic of . . . 2 . 2
46 Lebanon . 2 . . . 2
47 Mongolia . . . . 2 2
48 Morocco . . . . 2 2
49 Belarus . 1 . . . 1
50 Botswana . . 1 . . 1
51 Central African Republic . 1 . . . 1
52 Chile . . . 1 . 1
53 Congo . . . . 1 1
54 Ethiopia . . 1 . . 1
55 Iran, Islamic Republic of . . . . 1 1
56 Nigeria . . . 1 . 1
57 Peru . . . 1 . 1
58 Turkey . . 1 . . 1
59 Zambia . . 1 . . 1

Number of publications, full counts


Bar chart of publication_year

Share of the total number of publications in the field, full counts (%)
Obs Country 1990-1994 1995-1999 2000-2004 2005-2009 2010-2014 All years
1 All countries 100.0 100.0 100.0 100.0 100.0 100.0
2 United States 37.1 38.2 38.0 33.9 27.4 34.4
3 Germany 11.4 8.2 16.1 26.2 27.2 19.0
4 Canada 22.0 19.3 17.5 14.0 18.7 18.0
5 South Africa 13.5 19.3 11.4 9.0 4.1 10.8
6 United Kingdom 1.2 5.4 11.1 14.6 12.6 9.8
7 Austria 7.8 12.1 8.5 10.6 6.2 8.9
8 Australia 1.6 3.2 7.3 9.8 10.5 7.1
9 Russian Federation 0.8 7.5 8.5 10.1 5.9 6.9
10 France 7.8 7.9 4.4 3.4 5.1 5.4
11 Sweden 4.5 6.4 3.2 3.7 5.9 4.7
12 Mexico 2.0 3.9 4.7 1.9 3.8 3.3
13 Finland 4.5 1.8 1.8 3.7 2.6 2.8
14 Italy . 2.1 3.2 2.9 3.3 2.5
15 Norway 0.4 2.9 2.3 2.1 3.1 2.3
16 Estonia 0.4 0.7 4.1 2.6 2.3 2.2
17 India 1.2 2.1 0.6 2.4 3.1 2.0
18 Brazil . 0.7 0.6 2.1 4.9 1.9
19 Spain . 0.4 1.5 2.6 3.1 1.7
20 Czech Republic 0.4 0.7 0.9 2.4 2.3 1.5
21 China 1.6 0.4 0.6 0.3 3.3 1.3
22 Poland . 0.4 0.3 1.9 2.8 1.2
23 Japan 1.6 0.4 2.0 0.8 1.0 1.2
24 Switzerland 1.2 1.1 0.3 0.8 1.5 1.0
25 Belgium . . 0.9 1.6 1.3 0.9
26 Denmark . . 0.3 0.8 2.3 0.8
27 Netherlands . 1.1 0.9 1.1 0.8 0.8
28 Argentina . . 0.3 0.5 1.3 0.5
29 Ghana . . 0.6 1.6 . 0.5
30 Egypt . . 0.6 0.5 0.8 0.4
31 Romania . . . 1.1 0.8 0.4
32 Ukraine 0.4 0.7 0.3 0.3 0.5 0.4
33 Iceland . 0.7 0.6 0.5 . 0.4
34 Jordan . . 0.3 0.3 1.0 0.4
35 Hungary . . . . 1.3 0.3
36 New Zealand . 0.4 0.3 0.5 . 0.2
37 Taiwan . 0.4 0.9 . . 0.2
38 Israel . . 0.9 . . 0.2
39 Namibia . 1.1 . . . 0.2
40 Saudi Arabia . . . . 0.8 0.2
41 Thailand . 0.7 0.3 . . 0.2
42 USSR 1.2 . . . . 0.2
43 Viet Nam . 0.4 . 0.5 . 0.2
44 Kazakhstan . . . 0.5 . 0.1
45 Korea, Republic of . . . 0.5 . 0.1
46 Lebanon . 0.7 . . . 0.1
47 Mongolia . . . . 0.5 0.1
48 Morocco . . . . 0.5 0.1
49 Belarus . 0.4 . . . 0.1
50 Botswana . . 0.3 . . 0.1
51 Central African Republic . 0.4 . . . 0.1
52 Chile . . . 0.3 . 0.1
53 Congo . . . . 0.3 0.1
54 Ethiopia . . 0.3 . . 0.1
55 Iran, Islamic Republic of . . . . 0.3 0.1
56 Nigeria . . . 0.3 . 0.1
57 Peru . . . 0.3 . 0.1
58 Turkey . . 0.3 . . 0.1
59 Zambia . . 0.3 . . 0.1

Share of the total number of publications in the field, full counts (%)


Bar chart of publication_year

Number of publications among 10% most cited in field, full counts
Obs Country 1990-1994 1995-1999 2000-2004 2005-2009 2010-2014 All years
1 All countries 19.0 19.2 8.7 7.7 17.8 72.3
2 United States 8.3 10.1 7.5 5.7 9.9 41.5
3 Germany 2.0 3.0 2.7 2.0 9.7 19.4
4 Canada 5.5 7.3 0.5 1.0 4.2 18.5
5 South Africa 1.0 2.0 0.0 0.0 1.0 4.0
6 United Kingdom 0.0 2.8 1.5 4.7 3.7 12.6
7 Austria 1.0 1.0 0.0 0.0 2.6 4.6
8 Australia 0.0 1.0 0.0 1.0 3.2 5.2
9 Russian Federation 0.0 3.7 2.0 1.0 0.2 6.9
10 France 2.0 1.3 0.2 0.0 0.0 3.5
11 Sweden 0.5 0.3 1.0 0.0 0.0 1.8
12 Mexico 2.0 3.0 0.0 1.0 0.0 6.0
13 Finland 0.0 0.0 0.0 0.0 0.0 0.0
14 Italy . 1.0 1.0 0.0 0.0 2.0
15 Norway 0.0 0.0 0.0 0.0 0.0 0.0
16 Estonia 0.0 0.3 0.0 0.0 0.0 0.3
17 India 0.0 0.0 0.0 0.0 0.0 0.0
18 Brazil . 0.0 0.0 0.0 0.2 0.2
19 Spain . 1.0 0.0 0.0 0.0 1.0
20 Czech Republic 0.0 0.0 0.0 0.0 0.0 0.0
21 China 0.9 0.0 0.2 0.0 0.0 1.1
22 Poland . 0.0 0.0 0.0 0.0 0.0
23 Japan 0.0 0.0 0.0 0.0 0.0 0.0
24 Switzerland 0.0 1.0 0.0 0.0 0.0 1.0
25 Belgium . . 0.0 0.0 0.6 0.6
26 Denmark . . 0.0 0.0 0.0 0.0
27 Netherlands . 0.0 0.0 0.0 0.0 0.0
28 Argentina . . 0.0 0.0 0.0 0.0
29 Ghana . . 0.0 0.0 . 0.0
30 Egypt . . 0.0 0.0 0.0 0.0
31 Romania . . . 0.0 0.0 0.0
32 Ukraine 0.0 0.0 0.0 0.0 0.0 0.0
33 Iceland . 0.0 0.0 0.0 . 0.0
34 Jordan . . 0.0 0.0 0.0 0.0
35 Hungary . . . . 0.0 0.0
36 New Zealand . 0.0 0.5 0.0 . 0.5
37 Taiwan . 0.0 0.0 . . 0.0
38 Israel . . 0.0 . . 0.0
39 Namibia . 0.0 . . . 0.0
40 Saudi Arabia . . . . 0.0 0.0
41 Thailand . 0.0 0.0 . . 0.0
42 USSR 0.0 . . . . 0.0
43 Viet Nam . 0.0 . 0.0 . 0.0
44 Kazakhstan . . . 0.0 . 0.0
45 Korea, Republic of . . . 0.0 . 0.0
46 Lebanon . 0.0 . . . 0.0
47 Mongolia . . . . 0.0 0.0
48 Morocco . . . . 0.0 0.0
49 Belarus . 0.0 . . . 0.0
50 Botswana . . 0.0 . . 0.0
51 Central African Republic . 0.0 . . . 0.0
52 Chile . . . 0.0 . 0.0
53 Congo . . . . 0.0 0.0
54 Ethiopia . . 0.0 . . 0.0
55 Iran, Islamic Republic of . . . . 0.0 0.0
56 Nigeria . . . 0.0 . 0.0
57 Peru . . . 0.0 . 0.0
58 Turkey . . 0.0 . . 0.0
59 Zambia . . 0.0 . . 0.0

Number of publications among 10% most cited in field, full counts


Bar chart of publication_year

Share of publications among 10% most cited in field, fractionalized (%)
Obs Country 1990-1994 1995-1999 2000-2004 2005-2009 2010-2014 All years
1 All countries 7.8 6.8 2.5 2.0 4.6 4.4
2 United States 8.5 8.1 5.6 4.7 8.2 6.9
3 Germany 6.8 10.7 1.9 0.6 10.2 5.5
4 Canada 9.5 10.7 0.2 2.0 4.4 5.4
5 South Africa 3.9 2.7 0.0 0.0 3.3 2.0
6 United Kingdom 0.0 19.8 2.8 6.8 5.8 6.5
7 Austria 9.3 2.4 0.0 0.0 8.4 3.6
8 Australia 0.0 3.0 0.0 1.3 4.3 2.1
9 Russian Federation 0.0 13.3 4.9 0.4 0.8 4.4
10 France 9.5 2.6 0.8 0.0 0.0 3.3
11 Sweden 4.9 0.7 8.8 0.0 0.0 2.2
12 Mexico 33.3 12.5 0.0 4.6 0.0 5.2
13 Finland 0.0 0.0 0.0 0.0 0.0 0.0
14 Italy . 9.1 7.1 0.0 0.0 3.0
15 Norway 0.0 0.0 0.0 0.0 0.0 0.0
16 Estonia 0.0 10.6 0.0 0.0 0.0 0.5
17 India 0.0 0.0 0.0 0.0 0.0 0.0
18 Brazil . 0.0 0.0 0.0 0.7 0.4
19 Spain . 100.0 0.0 0.0 0.0 1.5
20 Czech Republic 0.0 0.0 0.0 0.0 0.0 0.0
21 China 21.9 0.0 9.7 0.0 0.0 5.2
22 Poland . 0.0 0.0 0.0 0.0 0.0
23 Japan 0.0 0.0 0.0 0.0 0.0 0.0
24 Switzerland 0.0 23.1 0.0 0.0 0.0 4.0
25 Belgium . . 0.0 0.0 4.6 2.0
26 Denmark . . 0.0 0.0 0.0 0.0
27 Netherlands . 0.0 0.0 0.0 0.0 0.0
28 Argentina . . 0.0 0.0 0.0 0.0
29 Ghana . . 0.0 0.0 . 0.0
30 Egypt . . 0.0 0.0 0.0 0.0
31 Romania . . . 0.0 0.0 0.0
32 Ukraine 0.0 0.0 0.0 0.0 0.0 0.0
33 Iceland . 0.0 0.0 0.0 . 0.0
34 Jordan . . 0.0 0.0 0.0 0.0
35 Hungary . . . . 0.0 0.0
36 New Zealand . 0.0 46.2 0.0 . 6.1
37 Taiwan . 0.0 0.0 . . 0.0
38 Israel . . 0.0 . . 0.0
39 Namibia . 0.0 . . . 0.0
40 Saudi Arabia . . . . 0.0 0.0
41 Thailand . 0.0 0.0 . . 0.0
42 USSR 0.0 . . . . 0.0
43 Viet Nam . 0.0 . 0.0 . 0.0
44 Kazakhstan . . . 0.0 . 0.0
45 Korea, Republic of . . . 0.0 . 0.0
46 Lebanon . 0.0 . . . 0.0
47 Mongolia . . . . 0.0 0.0
48 Morocco . . . . 0.0 0.0
49 Belarus . 0.0 . . . 0.0
50 Botswana . . 0.0 . . 0.0
51 Central African Republic . 0.0 . . . 0.0
52 Chile . . . 0.0 . 0.0
53 Congo . . . . 0.0 0.0
54 Ethiopia . . 0.0 . . 0.0
55 Iran, Islamic Republic of . . . . 0.0 0.0
56 Nigeria . . . 0.0 . 0.0
57 Peru . . . 0.0 . 0.0
58 Turkey . . 0.0 . . 0.0
59 Zambia . . 0.0 . . 0.0

Share of publications among 10% most cited in field, fractionalized (%)


Bar chart of publication_year

Field normalized citation rate (cf), fractionalized
Obs Country 1990-1994 1995-1999 2000-2004 2005-2009 2010-2014 All years
1 All countries 0.94 0.85 0.71 0.52 0.68 0.72
2 United States 0.95 0.85 0.87 0.62 1.04 0.86
3 Germany 1.37 1.31 0.71 0.54 1.00 0.88
4 Canada 1.03 1.11 0.68 0.60 0.59 0.80
5 South Africa 0.79 0.64 0.60 0.45 0.41 0.62
6 United Kingdom 0.33 1.75 0.85 0.74 0.85 0.88
7 Austria 1.06 0.66 0.57 0.57 0.59 0.67
8 Australia 0.19 0.68 0.43 0.40 0.60 0.49
9 Russian Federation 0.04 0.73 0.71 0.35 0.41 0.52
10 France 1.05 0.69 0.70 0.43 0.46 0.71
11 Sweden 0.96 0.73 1.11 0.50 0.56 0.75
12 Mexico 2.37 1.40 0.55 0.34 0.35 0.72
13 Finland 0.31 0.77 0.54 0.26 0.16 0.34
14 Italy . 1.02 0.73 0.34 0.81 0.69
15 Norway 1.55 0.92 0.56 0.63 0.33 0.62
16 Estonia 1.16 1.11 0.52 0.52 0.31 0.53
17 India 0.31 0.11 0.27 0.47 0.10 0.23
18 Brazil . 0.21 0.16 0.35 0.30 0.30
19 Spain . 3.21 0.19 0.17 0.67 0.38
20 Czech Republic 0.19 0.13 0.50 0.37 0.37 0.35
21 China 0.38 0.00 1.07 0.00 0.35 0.35
22 Poland . 0.15 0.46 0.32 0.29 0.31
23 Japan 0.28 1.15 0.49 0.50 0.15 0.42
24 Switzerland 0.44 0.84 0.09 0.48 0.75 0.59
25 Belgium . . 0.76 0.91 0.95 0.90
26 Denmark . . 0.38 0.22 0.65 0.50
27 Netherlands . 0.82 0.27 0.24 1.01 0.76
28 Argentina . . 0.47 0.16 0.52 0.42
29 Ghana . . 1.25 0.27 . 0.48
30 Egypt . . 0.92 0.27 1.45 1.04
31 Romania . . . 0.16 0.04 0.10
32 Ukraine 0.03 0.21 0.98 0.59 0.23 0.36
33 Iceland . 0.35 0.50 0.37 . 0.41
34 Jordan . . 0.24 0.61 0.23 0.29
35 Hungary . . . . 0.28 0.28
36 New Zealand . 0.00 2.30 0.52 . 0.41
37 Taiwan . 0.25 0.67 . . 0.55
38 Israel . . 0.84 . . 0.84
39 Namibia . 0.26 . . . 0.26
40 Saudi Arabia . . . . 1.16 1.16
41 Thailand . 0.20 0.47 . . 0.29
42 USSR 0.12 . . . . 0.12
43 Viet Nam . 0.33 . 0.75 . 0.67
44 Kazakhstan . . . 0.08 . 0.08
45 Korea, Republic of . . . 0.26 . 0.26
46 Lebanon . 1.18 . . . 1.18
47 Mongolia . . . . 0.13 0.13
48 Morocco . . . . 0.24 0.24
49 Belarus . 0.25 . . . 0.25
50 Botswana . . 0.14 . . 0.14
51 Central African Republic . 0.48 . . . 0.48
52 Chile . . . 0.17 . 0.17
53 Congo . . . . 0.52 0.52
54 Ethiopia . . 0.38 . . 0.38
55 Iran, Islamic Republic of . . . . 0.25 0.25
56 Nigeria . . . 0.15 . 0.15
57 Peru . . . 1.19 . 1.19
58 Turkey . . 0.42 . . 0.42
59 Zambia . . 0.09 . . 0.09

Field normalized citation rate (cf), fractionalized


Bar chart of publication_year