Elsevier logo
Elsevier header image

Latest Impact Factor figures from Elsevier's Earth and Planetary Sciences Journals

We are pleased to bring you the latest Impact Factor figures from Elsevier's Earth and Planetary Sciences journals. Elsevier publishes 4, out of the top 5 journals, by total cites, in the category Geochemistry & Geophysics, namely: Earth and Planetary Science Letters, Chemical Geology, Geochimica et Cosmochimca Acta and Tectonophyics. Highlights include...

journal cover imageAtmospheric Environment
2009 Impact Factor
WAS
3.139
2010 Impact Factor
NOW
3.226
impact factor bar-chart
journal cover imageChemical Geology
2009 Impact Factor
WAS
3.407
2010 Impact Factor
NOW
3.722
impact factor bar-chart
journal cover imageEarth And Planetary Science Letters
2009 Impact Factor
WAS
4.062
2010 Impact Factor
NOW
4.279
impact factor bar-chart
journal cover imageGondwana Research
2009 Impact Factor
WAS
4.605
2010 Impact Factor
NOW
5.503
impact factor bar-chart
journal cover imageIcarus
2009 Impact Factor
WAS
3.340
2010 Impact Factor
NOW
3.813
impact factor bar-chart
journal cover imagePrecambrian Research
2009 Impact Factor
WAS
3.581
2010 Impact Factor
NOW
4.116
impact factor bar-chart
journal cover imageQuaternary Science Reviews
2009 Impact Factor
WAS
4.245
2010 Impact Factor
NOW
4.657
impact factor bar-chart

Calculating Impact Factors

WHAT IS AN IMPACT FACTOR?
The journal impact factor is a measure of the frequency with which the average article in a journal has been cited in a particular year. The impact factor helps you evaluate a journal's relative importance, especially when you compare it to others in the same field. The impact factor is calculated by dividing the number of citations in the current year to items published in the two previous years by the total number of items published in the two previous years.

Using Journal X as an example:
Cites in 2010 to items published in: 2009
2008
Sum
= 258
= 199
= 457
Number of items published in: 2009
2008
Sum
= 116
= 71
= 187
Calculation: Cites to recent items 457 = 2.444
Number of recent items 187

The 2010 Impact Factor for Journal X is 2.444

Journal Performance Measurements

Journal performance measurements offer a systematic, objective means to critically evaluate journals, and several indicators are available.

For more information visit: http://www.elsevier.com/wps/find/editorshome.editors/biblio