Class information for:
Level 1: GROUNDWATER AGE//ENVIRONMENTAL TRACERS//WATER OURCES DRINKING WATER

Basic class information
ID Publications Average number
of references		 Avg. shr. active
ref. in WoS
12274 854 37.3 45%


Bar chart of Publication_year

Last years might be incomplete

Classes in level above (level 2)


ID, lev.
above		 Publications Label for level above
399 16137 GROUND WATER//HYDROGEOLOGY JOURNAL//SUBMARINE GROUNDWATER DISCHARGE

Terms with highest relevance score


Rank Term Type of term Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 GROUNDWATER AGE Author keyword 43 48% 8% 67
2 ENVIRONMENTAL TRACERS Author keyword 15 40% 3% 29
3 WATER OURCES DRINKING WATER Address 9 26% 4% 30
4 GROUNDWATER DATING Author keyword 9 47% 2% 14
5 NOBLE GAS TEMPERATURE Author keyword 8 100% 1% 5
6 ENVIRONMENTAL TRACER Author keyword 4 32% 1% 11
7 ENVIRONM ISOTOPES GRP Address 4 56% 1% 5
8 NOBLE GAS TEMPERATURES Author keyword 3 100% 0% 3
9 CFCS Author keyword 3 15% 2% 16
10 DAKOTA AQUIFER Author keyword 2 67% 0% 2

Web of Science journal categories

Author Key Words


Rank Web of Science journal category Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class		 LCSH search Wikipedia search
1 GROUNDWATER AGE 43 48% 8% 67 Search GROUNDWATER+AGE Search GROUNDWATER+AGE
2 ENVIRONMENTAL TRACERS 15 40% 3% 29 Search ENVIRONMENTAL+TRACERS Search ENVIRONMENTAL+TRACERS
3 GROUNDWATER DATING 9 47% 2% 14 Search GROUNDWATER+DATING Search GROUNDWATER+DATING
4 NOBLE GAS TEMPERATURE 8 100% 1% 5 Search NOBLE+GAS+TEMPERATURE Search NOBLE+GAS+TEMPERATURE
5 ENVIRONMENTAL TRACER 4 32% 1% 11 Search ENVIRONMENTAL+TRACER Search ENVIRONMENTAL+TRACER
6 NOBLE GAS TEMPERATURES 3 100% 0% 3 Search NOBLE+GAS+TEMPERATURES Search NOBLE+GAS+TEMPERATURES
7 CFCS 3 15% 2% 16 Search CFCS Search CFCS
8 DAKOTA AQUIFER 2 67% 0% 2 Search DAKOTA+AQUIFER Search DAKOTA+AQUIFER
9 GROUNDWATER AGE TRACER 2 67% 0% 2 Search GROUNDWATER+AGE+TRACER Search GROUNDWATER+AGE+TRACER
10 MEMPHIS AQUIFER 2 67% 0% 2 Search MEMPHIS+AQUIFER Search MEMPHIS+AQUIFER

Key Words Plus


Rank Web of Science journal category Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 HYDROLOGIC TRACERS 65 71% 6% 52
2 DATING YOUNG GROUNDWATER 53 89% 3% 24
3 KARSTIC LIMESTONE AQUIFER 49 94% 2% 17
4 CHLOROFLUOROCARBONS CCL3F 46 70% 4% 38
5 ENVIRONMENTAL TRACERS 33 47% 6% 52
6 UPPER FLORIDAN AQUIFER 28 81% 2% 17
7 YOUNG FRACTION 26 100% 1% 11
8 MULTI TRACER 26 87% 2% 13
9 EXCESS AIR 24 61% 3% 25
10 ADVECTIVE DISPERSIVE SYSTEMS 23 79% 2% 15

Journals

Reviews


Title Publ. year Cit. Active references % act. ref.
to same field
Groundwater age and groundwater age dating 2008 61 36 47%
The age of groundwater - Definitions, models and why we do not need this term 2014 2 32 78%
Noble gases in lakes and ground waters 2002 122 158 42%
Dating young groundwater with sulfur hexafluoride: Natural and anthropogenic sources of sulfur hexafluoride 2000 147 79 44%
Geochemistry and the understanding of ground-water systems 2005 78 162 28%
A review of methods for modelling environmental tracers in groundwater: Advantages of tracer concentration simulation 2014 1 141 59%
Review: Environmental tracers in arid-zone hydrology 2011 22 41 29%
Tritium-helium-3 age-dating of groundwater in the Livermore Valley of California 2004 1 6 83%
Worldwide occurrence and fate of chlorofluorocarbons in groundwater 2003 29 94 36%
Isotopes in groundwater as indicators of climate changes 2011 4 21 33%

Address terms


Rank Address term Relevance score
(tfidf)		 Class's shr.
of term's tot.
occurrences		 Shr. of publ.
in class containing
term		 Num. of
publ. in
class
1 WATER OURCES DRINKING WATER 9 26% 3.5% 30
2 ENVIRONM ISOTOPES GRP 4 56% 0.6% 5
3 432 1 25% 0.6% 5
4 ENVIRONM PHYS OCEANOG 1 100% 0.2% 2
5 GHYMAC GEOSCI HYDROSCI 1 33% 0.4% 3
6 INT PLICAT KARST WATER OURCES 1 33% 0.4% 3
7 ISOTOPE HYDROL SECT 1 14% 0.9% 8
8 GROUND WATER 1 18% 0.6% 5
9 OE GER CLIMATE 1 27% 0.4% 3
10 GROUNDWATER OURCES GRP 1 33% 0.2% 2

Related classes at same level (level 1)


Rank Relatedness score Related classes
1 0.0000168701 NITRATE SOURCES//NITRATE ISOTOPES//NITRATE SOURCE
2 0.0000141692 CHLORIDE MASS BALANCE//GROUNDWATER RECHARGE//RECHARGE
3 0.0000131367 FLUIDS VOLATILES//NOBLE GASES//HELIUM ISOTOPES
4 0.0000120997 AQUITARD//HYDRIC SOIL INDICATORS//TOLUCA BASIN
5 0.0000111483 DEUTERIUM EXCESS//D EXCESS//OXYGEN 18
6 0.0000108706 CHALK//CHALK GROUNDWATER//DUAL PERMEABILITY MODELS
7 0.0000100874 GLOBAL CHANGE SCI//HALOCARBONS//EINDHOVEN SUSTAINABIL
8 0.0000096441 HYDROGRAPH SEPARATION//HILLSLOPE HYDROLOGY//SUBSURFACE STORMFLOW
9 0.0000086378 GROUND WATER MONITORING AND REMEDIATION//FLOWMETER LOGGING//BEDDING PLANE FRACTURES
10 0.0000081655 KARST//KARST AQUIFER//KARST HYDROLOGY