Permafrost and Periglacial Processes

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

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	0.950
2000	1.018
2001	0.735
2002	0.873
2003	0.898
2004	0.984
2005	1.225
2006	1.426
2007	1.760
2008	1.425
2009	1.261
2010	1.701
2011	2.339
2012	2.185
2013	1.977
2014	1.155
2015	1.223
2016	1.585

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	1.093
Cites / Doc. (4 years)	2000	1.491
Cites / Doc. (4 years)	2001	1.325
Cites / Doc. (4 years)	2002	1.487
Cites / Doc. (4 years)	2003	1.714
Cites / Doc. (4 years)	2004	1.581
Cites / Doc. (4 years)	2005	1.752
Cites / Doc. (4 years)	2006	1.648
Cites / Doc. (4 years)	2007	2.078
Cites / Doc. (4 years)	2008	2.602
Cites / Doc. (4 years)	2009	2.525
Cites / Doc. (4 years)	2010	2.258
Cites / Doc. (4 years)	2011	3.653
Cites / Doc. (4 years)	2012	4.124
Cites / Doc. (4 years)	2013	4.224
Cites / Doc. (4 years)	2014	3.350
Cites / Doc. (4 years)	2015	2.475
Cites / Doc. (4 years)	2016	2.920
Cites / Doc. (3 years)	1999	1.093
Cites / Doc. (3 years)	2000	1.494
Cites / Doc. (3 years)	2001	1.165
Cites / Doc. (3 years)	2002	1.416
Cites / Doc. (3 years)	2003	1.798
Cites / Doc. (3 years)	2004	1.515
Cites / Doc. (3 years)	2005	1.515
Cites / Doc. (3 years)	2006	1.684
Cites / Doc. (3 years)	2007	1.957
Cites / Doc. (3 years)	2008	2.440
Cites / Doc. (3 years)	2009	2.391
Cites / Doc. (3 years)	2010	2.244
Cites / Doc. (3 years)	2011	3.659
Cites / Doc. (3 years)	2012	3.734
Cites / Doc. (3 years)	2013	4.196
Cites / Doc. (3 years)	2014	2.416
Cites / Doc. (3 years)	2015	2.456
Cites / Doc. (3 years)	2016	3.049
Cites / Doc. (2 years)	1999	1.228
Cites / Doc. (2 years)	2000	1.121
Cites / Doc. (2 years)	2001	1.123
Cites / Doc. (2 years)	2002	1.508
Cites / Doc. (2 years)	2003	1.548
Cites / Doc. (2 years)	2004	1.123
Cites / Doc. (2 years)	2005	1.403
Cites / Doc. (2 years)	2006	1.333
Cites / Doc. (2 years)	2007	1.541
Cites / Doc. (2 years)	2008	2.367
Cites / Doc. (2 years)	2009	2.386
Cites / Doc. (2 years)	2010	1.983
Cites / Doc. (2 years)	2011	3.234
Cites / Doc. (2 years)	2012	3.836
Cites / Doc. (2 years)	2013	2.443
Cites / Doc. (2 years)	2014	2.322
Cites / Doc. (2 years)	2015	2.288
Cites / Doc. (2 years)	2016	2.556

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	25
Self Cites	2000	31
Self Cites	2001	36
Self Cites	2002	26
Self Cites	2003	32
Self Cites	2004	43
Self Cites	2005	26
Self Cites	2006	40
Self Cites	2007	43
Self Cites	2008	67
Self Cites	2009	22
Self Cites	2010	46
Self Cites	2011	44
Self Cites	2012	29
Self Cites	2013	66
Self Cites	2014	26
Self Cites	2015	19
Self Cites	2016	34
Total Cites	1999	94
Total Cites	2000	130
Total Cites	2001	99
Total Cites	2002	126
Total Cites	2003	160
Total Cites	2004	147
Total Cites	2005	147
Total Cites	2006	165
Total Cites	2007	182
Total Cites	2008	222
Total Cites	2009	208
Total Cites	2010	202
Total Cites	2011	333
Total Cites	2012	351
Total Cites	2013	386
Total Cites	2014	215
Total Cites	2015	221
Total Cites	2016	250

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	0.802
External Cites per document	2000	1.138
External Cites per document	2001	0.741
External Cites per document	2002	1.124
External Cites per document	2003	1.438
External Cites per document	2004	1.072
External Cites per document	2005	1.247
External Cites per document	2006	1.276
External Cites per document	2007	1.495
External Cites per document	2008	1.703
External Cites per document	2009	2.138
External Cites per document	2010	1.733
External Cites per document	2011	3.176
External Cites per document	2012	3.426
External Cites per document	2013	3.478
External Cites per document	2014	2.124
External Cites per document	2015	2.244
External Cites per document	2016	2.634
Cites per document	1999	1.093
Cites per document	2000	1.494
Cites per document	2001	1.165
Cites per document	2002	1.416
Cites per document	2003	1.798
Cites per document	2004	1.515
Cites per document	2005	1.515
Cites per document	2006	1.684
Cites per document	2007	1.957
Cites per document	2008	2.440
Cites per document	2009	2.391
Cites per document	2010	2.244
Cites per document	2011	3.659
Cites per document	2012	3.734
Cites per document	2013	4.196
Cites per document	2014	2.416
Cites per document	2015	2.456
Cites per document	2016	3.049

% 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	23.33
2000	11.11
2001	43.75
2002	16.67
2003	34.29
2004	34.38
2005	21.21
2006	37.50
2007	34.38
2008	50.00
2009	25.71
2010	45.45
2011	50.00
2012	34.29
2013	31.25
2014	51.61
2015	29.17
2016	45.71

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	0
Non-citable documents	2005	0
Non-citable documents	2006	2
Non-citable documents	2007	4
Non-citable documents	2008	6
Non-citable documents	2009	5
Non-citable documents	2010	5
Non-citable documents	2011	5
Non-citable documents	2012	6
Non-citable documents	2013	8
Non-citable documents	2014	10
Non-citable documents	2015	8
Non-citable documents	2016	5
Citable documents	1999	86
Citable documents	2000	87
Citable documents	2001	85
Citable documents	2002	89
Citable documents	2003	89
Citable documents	2004	97
Citable documents	2005	97
Citable documents	2006	98
Citable documents	2007	93
Citable documents	2008	91
Citable documents	2009	87
Citable documents	2010	90
Citable documents	2011	91
Citable documents	2012	94
Citable documents	2013	92
Citable documents	2014	89
Citable documents	2015	90
Citable documents	2016	82

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	41
Uncited documents	2000	35
Uncited documents	2001	36
Uncited documents	2002	36
Uncited documents	2003	32
Uncited documents	2004	39
Uncited documents	2005	34
Uncited documents	2006	29
Uncited documents	2007	34
Uncited documents	2008	26
Uncited documents	2009	24
Uncited documents	2010	31
Uncited documents	2011	23
Uncited documents	2012	23
Uncited documents	2013	22
Uncited documents	2014	21
Uncited documents	2015	30
Uncited documents	2016	16
Cited documents	1999	45
Cited documents	2000	52
Cited documents	2001	49
Cited documents	2002	53
Cited documents	2003	57
Cited documents	2004	58
Cited documents	2005	63
Cited documents	2006	71
Cited documents	2007	63
Cited documents	2008	71
Cited documents	2009	68
Cited documents	2010	64
Cited documents	2011	73
Cited documents	2012	77
Cited documents	2013	78
Cited documents	2014	78
Cited documents	2015	68
Cited documents	2016	71

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Country	United States	60 H Index
Subject Area and Category	Earth and Planetary Sciences Earth-Surface Processes
Publisher	John Wiley & Sons Inc.
Publication type	Journals
ISSN	10456740, 10991530
Coverage	1990-ongoing
Scope	Permafrost and Periglacial Processes is an international journal dedicated to the rapid publication of scientific and technical papers concerned with earth surface cryogenic processes, landforms and sediments present in a variety of (Sub) Arctic, Antarctic and High Mountain environments. It provides an efficient vehicle of communication amongst those with an interest in the cold, non-glacial geosciences. The focus is on (1) original research based on geomorphological, hydrological, sedimentological, geotechnical and engineering aspects of these areas and (2) original research carried out upon relict features where the objective has been to reconstruct the nature of the processes and/or palaeoenvironments which gave rise to these features. (source)