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About Isaac R Santos

Dr Isaac Santos PhD(Florida State University)

Honours and PhD students interested in my research are encouraged to contact me. We have well funded research projects and scholarships are available to outsdanding students 
Greenhouse gases We use cutting edge technology to investigate the sources of methane, carbon dioxide and nitrous oxide in coastal waters. Current research is being conducted in mangroves, coral reefs, estuaries, creeks and the continental shelf. Submarine Groundwater Discharge I use radionuclides as tracers of submarine groundwater discharge (SGD). SGD is an important, but overlooked and invisible global source of trace elements and nutrients into the coastal ocean. Radon and radium isotopes are excellent SGD tracers as they are highly enriched in groundwaters relative to surface waters and they are conservative in seawater. 
Subterranean Estuaries I am also interested in carbon and nutrient cycling in subterranean estuaries. Nutrient cycling in subterranean estuaries can be fuelled by oxygen and organic matter inputs driven into the aquifer (beach face) by tidal pumping. After accounting for biogeochemical additions into subterranean estuaries, SGD-derived nutrient fluxes can be dramatically enhanced.


January 2015 - Present Professor, Southern Cross University School of Environment, Science and Engineering

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Honors and Awards

  • 2018 AGU, James B. Macelwane Medal

Contact Information

PO Box 157
Lismore, NSW
Australia 2480
Phone: (+61 2) 6620 3494


Journal articles (114)