Open Access

Fig. 3


Download original image

H2 source types and associated photographs during field trips: (a) Borehole in the Republic of Djibouti. (b) Gas chimney on seismic data. (c) Free gas vent in Bolivia. (d) Bubbling water in Italy. SCD in (e, f) Australia and (g, h) in Namibia. See Appendix B for coordinates.

Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.

Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.

Initial download of the metrics may take a while.