Class information for:
Level 1: PERMAFROST//PERMAFROST AND PERIGLACIAL PROCESSES//ACTIVE LAYER

Basic class information
Bar chart of Publication_year

Last years might be incomplete

Hierarchy of classes
The table includes all classes above and classes immediately below the current class.


Cluster id Level Cluster label #P
3 4 GEOSCIENCES, MULTIDISCIPLINARY//GEOCHEMISTRY & GEOPHYSICS//METEOROLOGY & ATMOSPHERIC SCIENCES 1953906
188 3       JOURNAL OF GLACIOLOGY//GEOGRAPHY, PHYSICAL//COLD REGIONS SCIENCE AND TECHNOLOGY 55694
2176 2             PERMAFROST//STATE FROZEN SOIL ENGN//PERMAFROST AND PERIGLACIAL PROCESSES 5265
2339 1                   PERMAFROST//PERMAFROST AND PERIGLACIAL PROCESSES//ACTIVE LAYER 2313

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 PERMAFROST authKW 3131693 26% 38% 601
2 PERMAFROST AND PERIGLACIAL PROCESSES journal 1601926 13% 40% 292
3 ACTIVE LAYER authKW 904393 6% 46% 143
4 THERMOKARST authKW 716403 4% 63% 83
5 THERMOKARST LAKES authKW 411275 2% 75% 40
6 PALSA authKW 306990 1% 87% 26
7 GROUND ICE authKW 282699 2% 49% 42
8 PERMAFROST DEGRADATION authKW 252206 2% 51% 36
9 PERMAFROST THAW authKW 243274 1% 71% 25
10 LITHALSA authKW 231610 1% 100% 17

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Geography, Physical 75422 31% 1% 707
2 Geosciences, Multidisciplinary 34998 45% 0% 1044
3 Geology 27386 15% 1% 353
4 Environmental Sciences 5747 25% 0% 584
5 Water Resources 3543 11% 0% 256
6 Meteorology & Atmospheric Sciences 3518 12% 0% 266
7 Ecology 1012 9% 0% 197
8 Soil Science 967 4% 0% 96
9 Geography 776 3% 0% 67
10 Engineering, Civil 656 5% 0% 123

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 STATE FROZEN SOIL ENGN 143208 3% 14% 76
2 MELNIKOV PERMAFROST 126784 1% 42% 22
3 CRYOSPHERE STN QINGHAI TIBET PLATEAU 115115 1% 65% 13
4 COLD ARID REG ENVIRONM ENGN 107453 7% 5% 162
5 COLD REG 95639 1% 28% 25
6 WATER ENVIRONM 94244 4% 7% 94
7 SNOW ICE DATA 92677 2% 13% 51
8 ARCTIC NETWORK 91576 0% 61% 11
9 ALASKA COOPERAT FISH WILDLIFE UNIT 85903 2% 15% 43
10 PALMER 85048 1% 39% 16

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 PERMAFROST AND PERIGLACIAL PROCESSES 1601926 13% 40% 292
2 JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 59202 4% 5% 87
3 CRYOSPHERE 52825 3% 6% 64
4 COLD REGIONS SCIENCE AND TECHNOLOGY 44377 4% 4% 85
5 ARCTIC ANTARCTIC AND ALPINE RESEARCH 37159 2% 5% 55
6 ARCTIC AND ALPINE RESEARCH 34521 2% 6% 46
7 JOURNAL OF GEOPHYSICAL RESEARCH-EARTH SURFACE 18498 2% 3% 47
8 CANADIAN JOURNAL OF EARTH SCIENCES 17877 4% 2% 81
9 ENVIRONMENTAL RESEARCH LETTERS 17468 2% 2% 55
10 ARCTIC 12937 2% 3% 38

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 PERMAFROST 3131693 26% 38% 601 Search PERMAFROST Search PERMAFROST
2 ACTIVE LAYER 904393 6% 46% 143 Search ACTIVE+LAYER Search ACTIVE+LAYER
3 THERMOKARST 716403 4% 63% 83 Search THERMOKARST Search THERMOKARST
4 THERMOKARST LAKES 411275 2% 75% 40 Search THERMOKARST+LAKES Search THERMOKARST+LAKES
5 PALSA 306990 1% 87% 26 Search PALSA Search PALSA
6 GROUND ICE 282699 2% 49% 42 Search GROUND+ICE Search GROUND+ICE
7 PERMAFROST DEGRADATION 252206 2% 51% 36 Search PERMAFROST+DEGRADATION Search PERMAFROST+DEGRADATION
8 PERMAFROST THAW 243274 1% 71% 25 Search PERMAFROST+THAW Search PERMAFROST+THAW
9 LITHALSA 231610 1% 100% 17 Search LITHALSA Search LITHALSA
10 ACTIVE LAYER THICKNESS 163726 1% 48% 25 Search ACTIVE+LAYER+THICKNESS Search ACTIVE+LAYER+THICKNESS

Core articles
The table includes core articles in the class. The following variables is taken into account for the relevance score of an article in a cluster c:
(1) Number of references referring to publications in the class.
(2) Share of total number of active references referring to publications in the class.
(3) Age of the article. New articles get higher score than old articles.
(4) Citation rate, normalized to year.

Classes with closest relation at Level 1


rank cluster_id2 link
1 8138 ROCK GLACIER//PERMAFROST AND PERIGLACIAL PROCESSES//MOUNTAIN PERMAFROST
2 9041 STATE FROZEN SOIL ENGN//COLD REGIONS SCIENCE AND TECHNOLOGY//FROZEN SOIL
3 2834 TUNDRA//ARCTIC TUNDRA//SHRUB EXPANSION
4 12007 ALASKA QUATERNARY//BERINGIA//ARCTIC ANTHROPOLOGY
5 1916 PEATLAND//PEATLAND ECOL GRP//FEN
6 16498 ICE JAM//RIVER ICE//FRAZIL ICE
7 19016 SOIL FROST//SOIL FREEZING//WINTER CLIMATE CHANGE
8 34026 TRETYAKOV GAUGE//DFIR//UNDERCATCH
9 10824 BOREHOLE TEMPERATURES//HEAT FLOW//RECH GEOCHIM GEODYNAM
10 33657 SHAW MODEL//NW WATERSHED//ACHIEVABLE FUTURE CONDITIONS

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