Event Details

TitleWebinar of Dr. Bayani Cardenas (University of Texas at Austin)

The GSP conducted its third webinar on June 09, 2020. The talk was given by Dr. Bayani Cardenas, Professor at the Jackson School of Geosciences, University of Texas at Austin. His talk on "Groundwater and surface water as a single resource - some examples from the Philippines” highlighted the high rates of submarine groundwater discharge (SGD) in Philippine coastal waters. He presented their team’s investigation on SGD in Pangasinan and Batangas utilizing electrical resistivity methods, groundwater flow simulations, radon isotope tracers and measurements of pCO2, salinity and temperature.

Their results suggest that SGD may extend offshore through faults and fractures and exit through openings that are either directly open to the sea or buried under sea bottom sediments. They also suggested the role of volcanic degassing of CO2 in Batangas as driving the release of CO2 bubbles in the sea bottom.

Dr. Cardenas emphasized that groundwater interacting with coastal waters can affect delicate coastal ecosystems and marine biodiversity in the country. As a note, the Philippine archipelago has the 6th longest coastline in the world. With this information, Dr. Cardenas highlighted the need to consider groundwater-coastal water interaction in managing coastal resources.

Below is the link to the video recording of the webinar: https://www.facebook.com/watch/?v=799852050548040

Start DateJune 9, 2020
End DateJune 9, 2020
AuthorJillian Aira Gabo-Ratio