Class information for:
Level 1: PETM//PALEOCENE EOCENE THERMAL MAXIMUM//INITIAL REPORTS OF THE DEEP SEA DRILLING PROJECT

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
0 3       GEOCHEMISTRY & GEOPHYSICS//GEOSCIENCES, MULTIDISCIPLINARY//GEOLOGY 272432
187 2             PALEONTOLOGY//GEOLOGY//AMMONITES 21050
1371 1                   PETM//PALEOCENE EOCENE THERMAL MAXIMUM//INITIAL REPORTS OF THE DEEP SEA DRILLING PROJECT 2705

Terms with highest relevance score


rank Category termType chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 PETM authKW 725249 3% 76% 82
2 PALEOCENE EOCENE THERMAL MAXIMUM authKW 493659 2% 76% 56
3 INITIAL REPORTS OF THE DEEP SEA DRILLING PROJECT journal 355936 7% 16% 197
4 PALEOCEANOGRAPHY journal 305209 9% 11% 235
5 PALEONTOLOGY WoSSC 284279 44% 2% 1184
6 EOCENE authKW 246862 7% 12% 181
7 PALEOCENE authKW 228173 4% 20% 98
8 CALCAREOUS NANNOFOSSILS authKW 207595 3% 19% 93
9 HYPERTHERMAL authKW 163641 1% 59% 24
10 EOCENE OLIGOCENE TRANSITION authKW 155313 1% 67% 20

Web of Science journal categories


chi_square_rank Category chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 Paleontology 284279 44% 2% 1184
2 Geology 55749 20% 1% 543
3 Geosciences, Multidisciplinary 42677 46% 0% 1246
4 Geography, Physical 11391 11% 0% 302
5 Oceanography 10633 14% 0% 388
6 Geochemistry & Geophysics 1947 8% 0% 217
7 Meteorology & Atmospheric Sciences 124 3% 0% 71
8 Multidisciplinary Sciences 43 1% 0% 26
9 Biodiversity Conservation 5 0% 0% 12
10 Evolutionary Biology 5 1% 0% 19

Address terms


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 PALAEOBOT PALYNOL 142920 3% 17% 73
2 CNR PADOVA 82839 0% 89% 8
3 ZENTRUM UMWELTWISSEN 69897 0% 100% 6
4 STUDY GLOBAL CHANGE 44793 0% 38% 10
5 PALEOENVIRONM DYNAM GRP 38995 0% 28% 12
6 US IMPLEMENTING ORG 37277 0% 80% 4
7 DIPARTIMENTO SCI TERRA POLO SCI TECNOL 34948 0% 100% 3
8 GEOL SUR 33879 0% 36% 8
9 GEOL FONDAMENTALE PL 32254 0% 46% 6
10 EARTH SCI 31888 17% 1% 448

Journals


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass
1 INITIAL REPORTS OF THE DEEP SEA DRILLING PROJECT 355936 7% 16% 197
2 PALEOCEANOGRAPHY 305209 9% 11% 235
3 MARINE MICROPALEONTOLOGY 143720 5% 9% 134
4 MICROPALEONTOLOGY 138527 4% 12% 103
5 PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY 85980 9% 3% 241
6 GFF 74125 3% 9% 73
7 NEWSLETTERS ON STRATIGRAPHY 67639 2% 12% 49
8 STRATIGRAPHY 49936 1% 15% 29
9 JOURNAL OF FORAMINIFERAL RESEARCH 31631 2% 5% 50
10 GEOLOGY 31102 6% 2% 164

Author Key Words


chi_square_rank term chi_square shrOfCwithTerm shrOfTermInClass termInClass LCSH search Wikipedia search
1 PETM 725249 3% 76% 82 Search PETM Search PETM
2 PALEOCENE EOCENE THERMAL MAXIMUM 493659 2% 76% 56 Search PALEOCENE+EOCENE+THERMAL+MAXIMUM Search PALEOCENE+EOCENE+THERMAL+MAXIMUM
3 EOCENE 246862 7% 12% 181 Search EOCENE Search EOCENE
4 PALEOCENE 228173 4% 20% 98 Search PALEOCENE Search PALEOCENE
5 CALCAREOUS NANNOFOSSILS 207595 3% 19% 93 Search CALCAREOUS+NANNOFOSSILS Search CALCAREOUS+NANNOFOSSILS
6 HYPERTHERMAL 163641 1% 59% 24 Search HYPERTHERMAL Search HYPERTHERMAL
7 EOCENE OLIGOCENE TRANSITION 155313 1% 67% 20 Search EOCENE+OLIGOCENE+TRANSITION Search EOCENE+OLIGOCENE+TRANSITION
8 PALEOCENE EOCENE BOUNDARY 140269 1% 71% 17 Search PALEOCENE+EOCENE+BOUNDARY Search PALEOCENE+EOCENE+BOUNDARY
9 BIOSTRATIGRAPHY 99425 6% 5% 156 Search BIOSTRATIGRAPHY Search BIOSTRATIGRAPHY
10 CALCAREOUS PLANKTON BIOSTRATIGRAPHY 94359 0% 90% 9 Search CALCAREOUS+PLANKTON+BIOSTRATIGRAPHY Search CALCAREOUS+PLANKTON+BIOSTRATIGRAPHY

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 30718 SILICOFLAGELLATES//GEOL PALAEOGEOG UNIT//DICTYOCHA OCTONARIA
2 17027 EASTERN GEOL PALEOCLIMATE SCI//NORTHERN HEMISPHERE GLACIATION//PLIOCENE
3 38145 CHESAPEAKE DRIFT//FABIANIA//KURNELL
4 5985 K T BOUNDARY//CRETACEOUS TERTIARY BOUNDARY//CRETACEOUS PALEOGENE BOUNDARY
5 13043 LARGER FORAMINIFERA//LARGER BENTHIC FORAMINIFERA//NUMMULITES
6 7265 PLANKTONIC FORAMINIFERA//PALEOCEANOGRAPHY//MG CA
7 37090 ORTHOZONE//AZOLLA BEDS//BAKCHAR IRON ORE DEPOSIT
8 38772 AND SYSTEM OF INTERCHANGEABLE MARKERS//BIOCHRONOLOGIC SCALE//BIOCHRONOZONE
9 22114 TECHNOL DEV SUPPORT UNIT//GEOL GEOPHYS ERVOIR ENGN GRPMINATO KU//MODERN BRACHIOPOD CALCITE
10 13722 MESSINIAN//MESSINIAN SALINITY CRISIS//LAGO MARE

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