Significant discharge of CO2 from hydrothermalism associated with the submarine volcano of El Hierro Island.

ABSTRACT: The residual hydrothermalism associated with submarine volcanoes, following an eruption event, plays an important role in the supply of CO2 to the ocean. The emitted CO2 increases the acidity of seawater. The submarine volcano of El Hierro, in its degasification stage, provided an excellent opportunity to study the effect of volcanic CO2 on the seawater carbonate system, the global carbon flux, and local ocean acidification. A detailed survey of the volcanic edifice was carried out using seven CTD-pH-ORP tow-yo studies, localizing the redox and acidic changes, which were used to obtain surface maps of anomalies. In order to investigate the temporal variability of the system, two CTD-pH-ORP yo-yo studies were conducted that included discrete sampling for carbonate system parameters. Meridio

SUBMITTER: Santana-Casiano JM 

PROVIDER: S-EPMC4860579 | biostudies-literature | 2016 May

REPOSITORIES: biostudies-literature