Scimago Journal & Country Rank

American Journal of Science

Country United States  - SIR icon SIR Ranking of United States
97
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.

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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)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
Earth and Planetary Sciences (miscellaneous)2017Q1
Earth and Planetary Sciences (miscellaneous)2018Q1
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
19991.862
20001.951
20013.265
20022.907
20033.787
20042.885
20052.628
20061.964
20072.342
20082.093
20092.056
20102.271
20112.385
20122.221
20132.411
20142.189
20152.056
20162.502
20172.403
20181.860
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)19991.895
Cites / Doc. (4 years)20002.395
Cites / Doc. (4 years)20013.364
Cites / Doc. (4 years)20023.545
Cites / Doc. (4 years)20034.789
Cites / Doc. (4 years)20044.019
Cites / Doc. (4 years)20054.225
Cites / Doc. (4 years)20063.252
Cites / Doc. (4 years)20073.368
Cites / Doc. (4 years)20083.215
Cites / Doc. (4 years)20092.893
Cites / Doc. (4 years)20103.425
Cites / Doc. (4 years)20113.638
Cites / Doc. (4 years)20125.287
Cites / Doc. (4 years)20135.170
Cites / Doc. (4 years)20144.797
Cites / Doc. (4 years)20153.908
Cites / Doc. (4 years)20164.180
Cites / Doc. (4 years)20174.567
Cites / Doc. (4 years)20184.271
Cites / Doc. (3 years)19991.895
Cites / Doc. (3 years)20002.273
Cites / Doc. (3 years)20013.679
Cites / Doc. (3 years)20023.482
Cites / Doc. (3 years)20034.813
Cites / Doc. (3 years)20043.424
Cites / Doc. (3 years)20053.065
Cites / Doc. (3 years)20062.868
Cites / Doc. (3 years)20073.299
Cites / Doc. (3 years)20082.600
Cites / Doc. (3 years)20092.462
Cites / Doc. (3 years)20103.588
Cites / Doc. (3 years)20113.678
Cites / Doc. (3 years)20124.308
Cites / Doc. (3 years)20134.833
Cites / Doc. (3 years)20144.093
Cites / Doc. (3 years)20153.369
Cites / Doc. (3 years)20164.371
Cites / Doc. (3 years)20174.356
Cites / Doc. (3 years)20183.545
Cites / Doc. (2 years)19991.898
Cites / Doc. (2 years)20002.321
Cites / Doc. (2 years)20013.471
Cites / Doc. (2 years)20023.393
Cites / Doc. (2 years)20034.362
Cites / Doc. (2 years)20042.333
Cites / Doc. (2 years)20052.509
Cites / Doc. (2 years)20062.703
Cites / Doc. (2 years)20072.475
Cites / Doc. (2 years)20082.000
Cites / Doc. (2 years)20091.929
Cites / Doc. (2 years)20103.365
Cites / Doc. (2 years)20113.000
Cites / Doc. (2 years)20123.813
Cites / Doc. (2 years)20134.179
Cites / Doc. (2 years)20143.121
Cites / Doc. (2 years)20153.427
Cites / Doc. (2 years)20164.133
Cites / Doc. (2 years)20173.898
Cites / Doc. (2 years)20183.155
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 Cites20067
Self Cites20079
Self Cites20085
Self Cites20099
Self Cites201023
Self Cites201111
Self Cites20127
Self Cites201312
Self Cites201413
Self Cites201512
Self Cites20167
Self Cites201710
Self Cites20188
Total Cites1999180
Total Cites2000200
Total Cites2001287
Total Cites2002296
Total Cites2003385
Total Cites2004291
Total Cites2005236
Total Cites2006261
Total Cites2007287
Total Cites2008247
Total Cites2009229
Total Cites2010348
Total Cites2011423
Total Cites2012461
Total Cites2013522
Total Cites2014352
Total Cites2015347
Total Cites2016459
Total Cites2017453
Total Cites2018312
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 document19991.758
External Cites per document20002.216
External Cites per document20013.487
External Cites per document20023.353
External Cites per document20034.613
External Cites per document20043.188
External Cites per document20052.935
External Cites per document20062.791
External Cites per document20073.195
External Cites per document20082.547
External Cites per document20092.366
External Cites per document20103.351
External Cites per document20113.583
External Cites per document20124.243
External Cites per document20134.722
External Cites per document20143.942
External Cites per document20153.252
External Cites per document20164.305
External Cites per document20174.260
External Cites per document20183.455
Cites per document19991.895
Cites per document20002.273
Cites per document20013.679
Cites per document20023.482
Cites per document20034.813
Cites per document20043.424
Cites per document20053.065
Cites per document20062.868
Cites per document20073.299
Cites per document20082.600
Cites per document20092.462
Cites per document20103.588
Cites per document20113.678
Cites per document20124.308
Cites per document20134.833
Cites per document20144.093
Cites per document20153.369
Cites per document20164.371
Cites per document20174.356
Cites per document20183.545
% 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
200642.31
200736.59
200851.22
200960.00
201052.63
201151.72
201239.29
201348.39
201460.00
201556.67
201648.28
201733.33
201835.14
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
Non-citable documents20175
Non-citable documents20181
Citable documents199995
Citable documents200088
Citable documents200178
Citable documents200285
Citable documents200380
Citable documents200485
Citable documents200577
Citable documents200691
Citable documents200787
Citable documents200895
Citable documents200993
Citable documents201097
Citable documents2011115
Citable documents2012107
Citable documents2013108
Citable documents201486
Citable documents2015103
Citable documents2016105
Citable documents2017104
Citable documents201888
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 documents200022
Uncited documents200114
Uncited documents200216
Uncited documents200311
Uncited documents200419
Uncited documents200520
Uncited documents200624
Uncited documents200725
Uncited documents200833
Uncited documents200929
Uncited documents201024
Uncited documents201137
Uncited documents201219
Uncited documents201328
Uncited documents201418
Uncited documents201529
Uncited documents201618
Uncited documents201720
Uncited documents201817
Cited documents199964
Cited documents200066
Cited documents200164
Cited documents200269
Cited documents200369
Cited documents200466
Cited documents200558
Cited documents200669
Cited documents200767
Cited documents200873
Cited documents200979
Cited documents201088
Cited documents201191
Cited documents201297
Cited documents201386
Cited documents201470
Cited documents201580
Cited documents201693
Cited documents201789
Cited documents201872
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