Fig. 3: Exploring deep coastal groundwater systems across space and time.
From: The coastal transition zone is an underexplored frontier in hydrology and geoscience

Aspects of coastal aquifers that motivate future research. The three larger bubbles correspond to where does the water come from (emplacement), where is it now (long-term storage) and where is it going (utilization)? Note: similar diagrams can be drawn for other research applications (e.g., tectonics, hydrocarbons, geohazards) crossing the white ribbon.