Dear Colleagues,

Understanding the linkages between coastal groundwater and the ocean, lakes and rivers is essential, not only for the sustainable management of regional water resources, but also for the development of global material fluxes. The quantity, distribution and composition of inputs depends on the particular groundwater pathways. Assessment is confounded, however, by the variety of processes that drive groundwater flow, the wide range of scales involved and the diversity of settings. Coastal groundwater seepage may be driven by terrestrial hydraulic gradients, wave action, currents, seiching, tidal changes, density variations, etc. Geological settings range across deltas, lakes, islands, karst, coastal plains, volcanic terrains permafrost and urban environments, and scales from nearshore (0 to 10 M), to local (10 m–10 km), to regional (>10 km) and global. Nevertheless, understanding must be distilled from a broad spectrum of site-specific and process-specific studies.

This Special Issue is dedicated to putting forward new results, interpretations and methods needed to advance our global understanding of coastal groundwater dynamics and chemical cycles.

Prof. Dr. Henry J. Bokuniewicz
Guest Editor

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• submarine groundwater discharge
• coastal groundwater quality
• modeling and remote sensing
• land-use
• extreme events
• climate change
• nutrient loading
• thermal effects
• solute transport
• transformations