Journal of African Earth Sciences

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.

Category	Year	Quartile
Earth-Surface Processes	1997	Q1
Earth-Surface Processes	1998	Q2
Earth-Surface Processes	1999	Q2
Earth-Surface Processes	2000	Q2
Earth-Surface Processes	2001	Q2
Earth-Surface Processes	2002	Q2
Earth-Surface Processes	2003	Q1
Earth-Surface Processes	2004	Q2
Earth-Surface Processes	2005	Q1
Earth-Surface Processes	2006	Q2
Earth-Surface Processes	2007	Q1
Earth-Surface Processes	2008	Q1
Earth-Surface Processes	2009	Q2
Earth-Surface Processes	2010	Q2
Earth-Surface Processes	2011	Q2
Earth-Surface Processes	2012	Q2
Earth-Surface Processes	2013	Q2
Earth-Surface Processes	2014	Q2
Earth-Surface Processes	2015	Q2
Earth-Surface Processes	2016	Q2
Geology	1997	Q2
Geology	1998	Q2
Geology	1999	Q2
Geology	2000	Q2
Geology	2001	Q2
Geology	2002	Q1
Geology	2003	Q1
Geology	2004	Q2
Geology	2005	Q1
Geology	2006	Q1
Geology	2007	Q1
Geology	2008	Q1
Geology	2009	Q1
Geology	2010	Q2
Geology	2011	Q2
Geology	2012	Q2
Geology	2013	Q1
Geology	2014	Q2
Geology	2015	Q2
Geology	2016	Q2

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.

Year	SJR
1999	0.399
2000	0.494
2001	0.530
2002	0.637
2003	0.820
2004	0.617
2005	0.744
2006	0.712
2007	0.892
2008	1.585
2009	0.823
2010	0.744
2011	0.604
2012	0.716
2013	0.876
2014	0.615
2015	0.577
2016	0.650

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 document	Year	Value
Cites / Doc. (4 years)	1999	0.555
Cites / Doc. (4 years)	2000	0.562
Cites / Doc. (4 years)	2001	0.697
Cites / Doc. (4 years)	2002	0.618
Cites / Doc. (4 years)	2003	1.051
Cites / Doc. (4 years)	2004	0.993
Cites / Doc. (4 years)	2005	0.904
Cites / Doc. (4 years)	2006	1.372
Cites / Doc. (4 years)	2007	1.287
Cites / Doc. (4 years)	2008	1.694
Cites / Doc. (4 years)	2009	1.712
Cites / Doc. (4 years)	2010	1.764
Cites / Doc. (4 years)	2011	1.289
Cites / Doc. (4 years)	2012	1.328
Cites / Doc. (4 years)	2013	1.769
Cites / Doc. (4 years)	2014	1.974
Cites / Doc. (4 years)	2015	1.534
Cites / Doc. (4 years)	2016	1.706
Cites / Doc. (3 years)	1999	0.555
Cites / Doc. (3 years)	2000	0.498
Cites / Doc. (3 years)	2001	0.706
Cites / Doc. (3 years)	2002	0.627
Cites / Doc. (3 years)	2003	1.008
Cites / Doc. (3 years)	2004	0.911
Cites / Doc. (3 years)	2005	0.981
Cites / Doc. (3 years)	2006	1.206
Cites / Doc. (3 years)	2007	1.200
Cites / Doc. (3 years)	2008	1.826
Cites / Doc. (3 years)	2009	1.424
Cites / Doc. (3 years)	2010	1.411
Cites / Doc. (3 years)	2011	1.185
Cites / Doc. (3 years)	2012	1.363
Cites / Doc. (3 years)	2013	1.830
Cites / Doc. (3 years)	2014	1.735
Cites / Doc. (3 years)	2015	1.409
Cites / Doc. (3 years)	2016	1.603
Cites / Doc. (2 years)	1999	0.427
Cites / Doc. (2 years)	2000	0.482
Cites / Doc. (2 years)	2001	0.704
Cites / Doc. (2 years)	2002	0.429
Cites / Doc. (2 years)	2003	0.717
Cites / Doc. (2 years)	2004	1.125
Cites / Doc. (2 years)	2005	0.719
Cites / Doc. (2 years)	2006	0.994
Cites / Doc. (2 years)	2007	1.286
Cites / Doc. (2 years)	2008	1.465
Cites / Doc. (2 years)	2009	0.909
Cites / Doc. (2 years)	2010	1.228
Cites / Doc. (2 years)	2011	1.184
Cites / Doc. (2 years)	2012	1.318
Cites / Doc. (2 years)	2013	1.549
Cites / Doc. (2 years)	2014	1.569
Cites / Doc. (2 years)	2015	1.358
Cites / Doc. (2 years)	2016	1.462

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.

Cites	Year	Value
Self Cites	1999	26
Self Cites	2000	30
Self Cites	2001	46
Self Cites	2002	23
Self Cites	2003	24
Self Cites	2004	50
Self Cites	2005	48
Self Cites	2006	65
Self Cites	2007	33
Self Cites	2008	20
Self Cites	2009	18
Self Cites	2010	45
Self Cites	2011	45
Self Cites	2012	37
Self Cites	2013	54
Self Cites	2014	86
Self Cites	2015	80
Self Cites	2016	149
Total Cites	1999	131
Total Cites	2000	138
Total Cites	2001	209
Total Cites	2002	208
Total Cites	2003	260
Total Cites	2004	185
Total Cites	2005	209
Total Cites	2006	258
Total Cites	2007	324
Total Cites	2008	398
Total Cites	2009	299
Total Cites	2010	223
Total Cites	2011	256
Total Cites	2012	327
Total Cites	2013	474
Total Cites	2014	399
Total Cites	2015	527
Total Cites	2016	853

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.

Cites	Year	Value
External Cites per document	1999	0.445
External Cites per document	2000	0.390
External Cites per document	2001	0.551
External Cites per document	2002	0.557
External Cites per document	2003	0.915
External Cites per document	2004	0.665
External Cites per document	2005	0.756
External Cites per document	2006	0.902
External Cites per document	2007	1.078
External Cites per document	2008	1.734
External Cites per document	2009	1.338
External Cites per document	2010	1.127
External Cites per document	2011	0.977
External Cites per document	2012	1.208
External Cites per document	2013	1.622
External Cites per document	2014	1.361
External Cites per document	2015	1.195
External Cites per document	2016	1.323
Cites per document	1999	0.555
Cites per document	2000	0.498
Cites per document	2001	0.706
Cites per document	2002	0.627
Cites per document	2003	1.008
Cites per document	2004	0.911
Cites per document	2005	0.981
Cites per document	2006	1.206
Cites per document	2007	1.200
Cites per document	2008	1.826
Cites per document	2009	1.424
Cites per document	2010	1.411
Cites per document	2011	1.185
Cites per document	2012	1.363
Cites per document	2013	1.830
Cites per document	2014	1.735
Cites per document	2015	1.409
Cites per document	2016	1.603

% 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.

Year	International Collaboration
1999	35.07
2000	36.36
2001	48.48
2002	53.33
2003	51.11
2004	57.66
2005	56.92
2006	62.86
2007	49.15
2008	46.43
2009	65.31
2010	58.33
2011	51.90
2012	62.32
2013	50.46
2014	49.81
2015	50.00
2016	41.98

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.

Documents	Year	Value
Non-citable documents	1999	0
Non-citable documents	2000	0
Non-citable documents	2001	0
Non-citable documents	2002	0
Non-citable documents	2003	0
Non-citable documents	2004	1
Non-citable documents	2005	3
Non-citable documents	2006	7
Non-citable documents	2007	11
Non-citable documents	2008	11
Non-citable documents	2009	10
Non-citable documents	2010	6
Non-citable documents	2011	9
Non-citable documents	2012	8
Non-citable documents	2013	9
Non-citable documents	2014	27
Non-citable documents	2015	65
Non-citable documents	2016	76
Citable documents	1999	236
Citable documents	2000	277
Citable documents	2001	296
Citable documents	2002	332
Citable documents	2003	258
Citable documents	2004	203
Citable documents	2005	213
Citable documents	2006	214
Citable documents	2007	270
Citable documents	2008	218
Citable documents	2009	210
Citable documents	2010	158
Citable documents	2011	216
Citable documents	2012	240
Citable documents	2013	259
Citable documents	2014	230
Citable documents	2015	374
Citable documents	2016	532

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.

Documents	Year	Value
Uncited documents	1999	161
Uncited documents	2000	197
Uncited documents	2001	179
Uncited documents	2002	232
Uncited documents	2003	148
Uncited documents	2004	107
Uncited documents	2005	127
Uncited documents	2006	112
Uncited documents	2007	127
Uncited documents	2008	82
Uncited documents	2009	82
Uncited documents	2010	67
Uncited documents	2011	102
Uncited documents	2012	96
Uncited documents	2013	95
Uncited documents	2014	98
Uncited documents	2015	205
Uncited documents	2016	242
Cited documents	1999	75
Cited documents	2000	80
Cited documents	2001	117
Cited documents	2002	100
Cited documents	2003	110
Cited documents	2004	97
Cited documents	2005	89
Cited documents	2006	109
Cited documents	2007	154
Cited documents	2008	147
Cited documents	2009	138
Cited documents	2010	97
Cited documents	2011	123
Cited documents	2012	152
Cited documents	2013	173
Cited documents	2014	159
Cited documents	2015	234
Cited documents	2016	366

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Country	United Kingdom	58 H Index
Subject Area and Category	Earth and Planetary Sciences Earth-Surface Processes Geology
Publisher	Elsevier Ltd.
Publication type	Journals
ISSN	1464343X
Coverage	1983-ongoing
Scope	The Journal of African Earth Sciences sees itself as the prime geological journal for all aspects of the geology of the African continent and the Middle East, and especially on the search for natural resources from these regions. This international interdisciplinary journal publishes high quality, peer-reviewed scientific papers on the geodynamics of the African and Arabian plates and their contained mobile belts, cratons and sedimentary basins; the crustal evolution, tectonics and structural geology of this region; economic geology of major mineral deposits and hydrocarbon resources; sedimentology, stratigraphy and palaeontology, petrology and mineralogy, geochemistry and isotope geology of Africa and the Middle East. (source)