Content Provider
DataCite Metadata Store (German National Library of Science and Technology)
1,101
NOAA NCEI Environmental Data Archive (via DataONE)
304
PANGAEA - Data Publisher for Earth & Environmental Science
115
Institute for Marine Research: Brage IMR
81
Directory of Open Access Journals: DOAJ Articles
59
Unknown
52
University of Tromsø: Munin Open Research Archive
38
Zenodo
37
Defense Technical Information Center: DTIC Technical Reports database
34
Alfred Wegener Institute for Polar- and Marine Research (AWI): ePIC (electronic Publication Information Center)
30
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel)
25
Copernicus Publications: E-Journals
15
Natural Environment Research Council: NERC Open Research Archive
14
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe)
13
Universitet i Oslo: Digitale utgivelser ved UiO (DUO)
12
Aarhus University: Research
11
Cambridge University Press
11
NTNU Open Archive (Norwegian University of Science and Technology)
11
University of Calgary Journal Hosting
11
Wiley Online Library (via Crossref)
11
Arctic Data Center (via DataONE)
10
PubMed Central (PMC)
10
University of Bergen: Bergen Open Research Archive (BORA-UiB)
9
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer)
8
Frontiers: Figshare
8
HighWire Press (Stanford University)
8
Niedersächsisches Online-Archiv NOA
8
Polar Research (E-Journal)
8
Norsk Polarinstitutt: Brage NP
7
Norwegian Polar Institute: Brage NP
7
ScienceDirect (Elsevier - via Crossref)
7
Springer Nature (via Crossref)
7
University of Copenhagen: Research
7
Université de Nantes: HAL-UNIV-NANTES
7
Lund University Publications (LUP)
6
University of Tromsø: Septentrio Academic Publishing
6
Wiley Online Library
6
Digital.CSIC (Spanish National Research Council)
5
Dryad Digital Repository (Duke University)
5
Instituto Español de Oceanografía: e-IEO
5
Oxford University Press (via Crossref)
5
Flanders Marine Institute (VLIZ): Open Marine Archive (OMA)
4
IODE-UNESCO: OceanDocs - E-Repository of Ocean Publications
4
Institut national des sciences de l'Univers: HAL-INSU
4
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR
4
Max Planck Society: MPG.PuRe
4
NASA Technical Reports Server (NTRS)
4
NORA (National aggregator of open repositories of Russian universities)
4
University of Southampton: e-Prints Soton
4
University of Wisconsin, Milwaukee: UWM Libraries Digital Collections
4
more ...