Class information for:
Level 1: NITRATE SOURCES//NITRATE ISOTOPES//NITRATE

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
271 3       WATER RESOURCES//GROUND WATER//GROUNDWATER 43917
721 2             COASTAL AQUIFER//GROUNDWATER//SEAWATER INTRUSION 13164
7519 1                   NITRATE SOURCES//NITRATE ISOTOPES//NITRATE 1383

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 NITRATE SOURCES authKW 486119 2% 89% 24
2 NITRATE ISOTOPES authKW 445049 2% 78% 25
3 NITRATE authKW 273456 23% 4% 323
4 NITRATE POLLUTION authKW 204150 2% 26% 34
5 NITRATE CONTAMINATION authKW 147441 2% 27% 24
6 NITROGEN AND OXYGEN ISOTOPES authKW 139569 1% 88% 7
7 GROUNDWATER authKW 104970 15% 2% 214
8 DENITRIFICATION authKW 102945 11% 3% 157
9 OSONA authKW 91148 0% 100% 4
10 GRP MINERAL LICADA MEDI AMBIENT address 87630 1% 38% 10

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Water Resources 26523 37% 0% 517
2 Environmental Sciences 13290 48% 0% 658
3 Geosciences, Multidisciplinary 6824 26% 0% 364
4 Engineering, Environmental 2220 11% 0% 147
5 Limnology 2182 5% 0% 68
6 Engineering, Civil 1013 8% 0% 112
7 Geochemistry & Geophysics 705 7% 0% 95
8 Soil Science 660 4% 0% 61
9 Ecology 252 6% 0% 82
10 Oceanography 195 3% 0% 43

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 GRP MINERAL LICADA MEDI AMBIENT 87630 1% 38% 10
2 RECERCA GEOL CARTOG AMBIENTAL GEOCAMB 72917 0% 80% 4
3 CENT WISCONSIN GROUNDWATER 68361 0% 100% 3
4 AQUAT ENVIRONM WATER OURCE 51269 0% 75% 3
5 GRP HIDROL SUBTERRANIA 51269 0% 75% 3
6 DUTCH GEOL SURVEY 45574 0% 100% 2
7 WATER ANAL WTP GILAU 45574 0% 100% 2
8 413 41344 1% 26% 7
9 GRP HIDROGEOQUIM 41014 0% 60% 3
10 431 38816 1% 15% 11

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 GROUND WATER 14197 3% 1% 42
2 JOURNAL OF ENVIRONMENTAL QUALITY 14061 5% 1% 65
3 JOURNAL OF HYDROLOGY 13962 6% 1% 87
4 JOURNAL OF CONTAMINANT HYDROLOGY 10490 2% 1% 33
5 APPLIED GEOCHEMISTRY 10304 3% 1% 42
6 ENVIRONMENTAL EARTH SCIENCES 8078 3% 1% 48
7 ENVIRONMENTAL GEOLOGY 6778 2% 1% 31
8 ISOTOPES IN ENVIRONMENTAL AND HEALTH STUDIES 4976 1% 2% 13
9 HYDROGEOLOGY JOURNAL 4299 1% 1% 19
10 GROUND WATER MONITORING AND REMEDIATION 4036 1% 1% 14

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 NITRATE SOURCES 486119 2% 89% 24 Search NITRATE+SOURCES Search NITRATE+SOURCES
2 NITRATE ISOTOPES 445049 2% 78% 25 Search NITRATE+ISOTOPES Search NITRATE+ISOTOPES
3 NITRATE 273456 23% 4% 323 Search NITRATE Search NITRATE
4 NITRATE POLLUTION 204150 2% 26% 34 Search NITRATE+POLLUTION Search NITRATE+POLLUTION
5 NITRATE CONTAMINATION 147441 2% 27% 24 Search NITRATE+CONTAMINATION Search NITRATE+CONTAMINATION
6 NITROGEN AND OXYGEN ISOTOPES 139569 1% 88% 7 Search NITROGEN+AND+OXYGEN+ISOTOPES Search NITROGEN+AND+OXYGEN+ISOTOPES
7 GROUNDWATER 104970 15% 2% 214 Search GROUNDWATER Search GROUNDWATER
8 DENITRIFICATION 102945 11% 3% 157 Search DENITRIFICATION Search DENITRIFICATION
9 OSONA 91148 0% 100% 4 Search OSONA Search OSONA
10 DUAL ISOTOPES 82029 0% 60% 6 Search DUAL+ISOTOPES Search DUAL+ISOTOPES

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 15441 DRASTIC//GROUNDWATER VULNERABILITY//AQUIFER VULNERABILITY
2 19167 NITROGEN ISOTOPES//BUDDINGTONITE//TOBELITE
3 16873 FOR UNGSBEREICH MARINE BIOGEOCHEM//FOR BEREICH MARINE BIOGEOCHEM//PROC OCEANOG CLIMA PROFC
4 14737 N 15 NATURAL ABUNDANCE//DELTA N 15//NATURAL N 15 ABUNDANCE
5 5606 GROUNDWATER QUALITY//HYDROGEOCHEMISTRY//GROUNDWATER
6 35488 NLEAP//SOIL PLANT NUTRIENT UNIT//WNTSC
7 21899 CHALK//QUARTERLY JOURNAL OF ENGINEERING GEOLOGY AND HYDROGEOLOGY//CHALK GROUNDWATER
8 9086 GROUNDWATER AGE//ENVIRONMENTAL TRACERS//GROUNDWATER DATING
9 35281 NATURAL BACKGROUND LEVELS//CLASSIFICATION INTO HOMOGENEOUS GROUPS//GROUNDWATER TYPOLOGIES
10 8482 VEGETATIVE FILTER STRIPS//RIPARIAN BUFFERS//FILTER STRIPS

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