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Some publishers provide simplified or even completely open access to their content during the corona crisis.
The following providers could be interesting for geography:
ACM digital library
Berghahn Journals
Cambridge Core
De Gruyter
JSTOR
MIT Press (until end of June)
Nomos eLibrary
Project Muse: Komplett
Taylor&Francis (until end of June): eBooks accessable, no download
Springer Textbooks (until end of July)
University of California Press
University of Michigan Press E-Books
Vandenhoeck&Ruprecht
The International Coalition of Library Consortia (ICOLC) offers a continuously updated compilation of the full-text offers from publishers that were additionally activated during the Corona crisis.