Scimago Journal & Country Rank

American Journal of Science

CountryUnited States
91
H Index
Subject Area and CategoryEarth and Planetary Sciences
Earth and Planetary Sciences (miscellaneous)
PublisherAmerican Journal of Science
Publication typeJournals
ISSN00029599
Coverage1947-1948, 1969, 1973, 1975-ongoing
Scope The American Journal of Science (AJS), founded in 1818 by Benjamin Silliman, is the oldest scientific journal in the United States that has been published continuously. The Journal is devoted to geology and related sciences and publishes articles from around the world presenting results of major research from all earth sciences. Readers are primarily earth scientists in academia and government institutions. AJS had an impact factor of 3.607 for 2003, ranking first for all peer-reviewed earth sciences journals publishing new content (ranking does not include journals that focus on review articles). Articles in AJS tend to be cited for many years, resulting in a citation half-life that exceeds 10 years (all statistics from Thomson ISI). (source)
Quartiles

The set of journals have been ranked according to their SJR and divided into four equal groups, four quartiles. Q1 (green) comprises the quarter of the journals with the highest values, Q2 (yellow) the second highest values, Q3 (orange) the third highest values and Q4 (red) the lowest values.

CategoryYearQuartile
Earth and Planetary Sciences (miscellaneous)1997Q1
Earth and Planetary Sciences (miscellaneous)1998Q1
Earth and Planetary Sciences (miscellaneous)1999Q1
Earth and Planetary Sciences (miscellaneous)2000Q1
Earth and Planetary Sciences (miscellaneous)2001Q1
Earth and Planetary Sciences (miscellaneous)2002Q1
Earth and Planetary Sciences (miscellaneous)2003Q1
Earth and Planetary Sciences (miscellaneous)2004Q1
Earth and Planetary Sciences (miscellaneous)2005Q1
Earth and Planetary Sciences (miscellaneous)2006Q1
Earth and Planetary Sciences (miscellaneous)2007Q1
Earth and Planetary Sciences (miscellaneous)2008Q1
Earth and Planetary Sciences (miscellaneous)2009Q1
Earth and Planetary Sciences (miscellaneous)2010Q1
Earth and Planetary Sciences (miscellaneous)2011Q1
Earth and Planetary Sciences (miscellaneous)2012Q1
Earth and Planetary Sciences (miscellaneous)2013Q1
Earth and Planetary Sciences (miscellaneous)2014Q1
Earth and Planetary Sciences (miscellaneous)2015Q1
Earth and Planetary Sciences (miscellaneous)2016Q1
SJR

The SJR is a size-independent prestige indicator that ranks journals by their 'average prestige per article'. It is based on the idea that 'all citations are not created equal'. SJR is a measure of scientific influence of journals that accounts for both the number of citations received by a journal and the importance or prestige of the journals where such citations come from It measures the scientific influence of the average article in a journal, it expresses how central to the global scientific discussion an average article of the journal is.

YearSJR
19991.783
20001.900
20013.240
20022.866
20033.634
20042.727
20052.595
20061.876
20072.275
20082.069
20091.997
20102.208
20112.357
20122.200
20132.351
20142.134
20152.044
20162.420
Citations per document

This indicator counts the number of citations received by documents from a journal and divides them by the total number of documents published in that journal. The chart shows the evolution of the average number of times documents published in a journal in the past two, three and four years have been cited in the current year. The two years line is equivalent to journal impact factor ™ (Thomson Reuters) metric.

Cites per documentYearValue
Cites / Doc. (4 years)19991.874
Cites / Doc. (4 years)20002.363
Cites / Doc. (4 years)20013.291
Cites / Doc. (4 years)20023.500
Cites / Doc. (4 years)20034.706
Cites / Doc. (4 years)20043.841
Cites / Doc. (4 years)20054.171
Cites / Doc. (4 years)20063.374
Cites / Doc. (4 years)20073.530
Cites / Doc. (4 years)20083.472
Cites / Doc. (4 years)20093.246
Cites / Doc. (4 years)20103.512
Cites / Doc. (4 years)20113.703
Cites / Doc. (4 years)20125.240
Cites / Doc. (4 years)20135.109
Cites / Doc. (4 years)20144.746
Cites / Doc. (4 years)20153.710
Cites / Doc. (4 years)20163.992
Cites / Doc. (3 years)19991.874
Cites / Doc. (3 years)20002.227
Cites / Doc. (3 years)20013.615
Cites / Doc. (3 years)20023.424
Cites / Doc. (3 years)20034.738
Cites / Doc. (3 years)20043.353
Cites / Doc. (3 years)20053.013
Cites / Doc. (3 years)20062.989
Cites / Doc. (3 years)20073.467
Cites / Doc. (3 years)20082.842
Cites / Doc. (3 years)20092.920
Cites / Doc. (3 years)20103.680
Cites / Doc. (3 years)20113.678
Cites / Doc. (3 years)20124.220
Cites / Doc. (3 years)20134.787
Cites / Doc. (3 years)20144.058
Cites / Doc. (3 years)20153.175
Cites / Doc. (3 years)20164.200
Cites / Doc. (2 years)19991.864
Cites / Doc. (2 years)20002.268
Cites / Doc. (2 years)20013.412
Cites / Doc. (2 years)20023.339
Cites / Doc. (2 years)20034.328
Cites / Doc. (2 years)20042.333
Cites / Doc. (2 years)20052.472
Cites / Doc. (2 years)20062.875
Cites / Doc. (2 years)20072.625
Cites / Doc. (2 years)20082.222
Cites / Doc. (2 years)20092.486
Cites / Doc. (2 years)20103.364
Cites / Doc. (2 years)20112.938
Cites / Doc. (2 years)20123.725
Cites / Doc. (2 years)20134.143
Cites / Doc. (2 years)20143.121
Cites / Doc. (2 years)20153.200
Cites / Doc. (2 years)20163.947
Total Cites 
Self-Cites

Evolution of the total number of citations and journal's self-citations received by a journal's published documents during the three previous years.
Journal Self-citation is defined as the number of citation from a journal citing article to articles published by the same journal.

CitesYearValue
Self Cites199913
Self Cites20005
Self Cites200115
Self Cites200211
Self Cites200316
Self Cites200420
Self Cites200510
Self Cites200612
Self Cites20079
Self Cites20086
Self Cites200912
Self Cites201024
Self Cites201112
Self Cites20128
Self Cites201312
Self Cites201413
Self Cites201511
Self Cites20167
Total Cites1999178
Total Cites2000196
Total Cites2001282
Total Cites2002291
Total Cites2003379
Total Cites2004285
Total Cites2005232
Total Cites2006272
Total Cites2007312
Total Cites2008287
Total Cites2009292
Total Cites2010379
Total Cites2011434
Total Cites2012460
Total Cites2013517
Total Cites2014349
Total Cites2015327
Total Cites2016441
External Cites per Doc 
Cites per Doc

Evolution of the number of total citation per document and external citation per document (i.e. journal self-citations removed) received by a journal's published documents during the three previous years. External citations are calculated by subtracting the number of self-citations from the total number of citations received by the journal’s documents.

CitesYearValue
External Cites per document19991.737
External Cites per document20002.170
External Cites per document20013.423
External Cites per document20023.294
External Cites per document20034.538
External Cites per document20043.118
External Cites per document20052.883
External Cites per document20062.857
External Cites per document20073.367
External Cites per document20082.782
External Cites per document20092.800
External Cites per document20103.447
External Cites per document20113.576
External Cites per document20124.147
External Cites per document20134.676
External Cites per document20143.907
External Cites per document20153.068
External Cites per document20164.133
Cites per document19991.874
Cites per document20002.227
Cites per document20013.615
Cites per document20023.424
Cites per document20034.738
Cites per document20043.353
Cites per document20053.013
Cites per document20062.989
Cites per document20073.467
Cites per document20082.842
Cites per document20092.920
Cites per document20103.680
Cites per document20113.678
Cites per document20124.220
Cites per document20134.787
Cites per document20144.058
Cites per document20153.175
Cites per document20164.200
% International Collaboration

International Collaboration accounts for the articles that have been produced by researchers from several countries. The chart shows the ratio of a journal's documents signed by researchers from more than one country; that is including more than one country address.

YearInternational Collaboration
199931.03
200040.91
200129.41
200220.83
200322.22
200422.22
200523.08
200637.93
200738.64
200852.38
200956.25
201052.63
201151.72
201239.29
201348.39
201460.00
201556.67
201648.28
Citable documents 
Non-citable documents

Not every article in a journal is considered primary research and therefore "citable", this chart shows the ratio of a journal's articles including substantial research (research articles, conference papers and reviews) in three year windows vs. those documents other than research articles, reviews and conference papers.

DocumentsYearValue
Non-citable documents19990
Non-citable documents20000
Non-citable documents20010
Non-citable documents20020
Non-citable documents20030
Non-citable documents20040
Non-citable documents20051
Non-citable documents20062
Non-citable documents20075
Non-citable documents200811
Non-citable documents200915
Non-citable documents201015
Non-citable documents201113
Non-citable documents20129
Non-citable documents20136
Non-citable documents20142
Non-citable documents20156
Non-citable documents20166
Citable documents199995
Citable documents200088
Citable documents200178
Citable documents200285
Citable documents200380
Citable documents200485
Citable documents200577
Citable documents200691
Citable documents200790
Citable documents2008101
Citable documents2009100
Citable documents2010103
Citable documents2011118
Citable documents2012109
Citable documents2013108
Citable documents201486
Citable documents2015103
Citable documents2016105
Cited documents 
Uncited documents

Ratio of a journal's items, grouped in three years windows, that have been cited at least once vs. those not cited during the following year.

DocumentsYearValue
Uncited documents199931
Uncited documents200023
Uncited documents200114
Uncited documents200216
Uncited documents200312
Uncited documents200419
Uncited documents200520
Uncited documents200622
Uncited documents200726
Uncited documents200832
Uncited documents200925
Uncited documents201024
Uncited documents201137
Uncited documents201219
Uncited documents201329
Uncited documents201418
Uncited documents201530
Uncited documents201618
Cited documents199964
Cited documents200065
Cited documents200164
Cited documents200269
Cited documents200368
Cited documents200466
Cited documents200558
Cited documents200671
Cited documents200769
Cited documents200880
Cited documents200990
Cited documents201094
Cited documents201194
Cited documents201299
Cited documents201385
Cited documents201470
Cited documents201579
Cited documents201693
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